{"id":20543,"date":"2026-01-06T17:48:54","date_gmt":"2026-01-06T17:48:54","guid":{"rendered":"https:\/\/aludiecasting.com\/?p=20543"},"modified":"2026-01-06T17:48:54","modified_gmt":"2026-01-06T17:48:54","slug":"nerezavi-zinek","status":"publish","type":"post","link":"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/","title":{"rendered":"Rezav\u00ed zinek? Pozn\u00e1n\u00ed zinku a jeho korozn\u00edch vlastnost\u00ed"},"content":{"rendered":"<p><span style=\"font-weight: 400\">Zinek je b\u011b\u017en\u011b pou\u017e\u00edvan\u00fd kov ve stavebnictv\u00ed, automobilov\u00e9m pr\u016fmyslu a v dom\u00e1cnosti. Mnoho lid\u00ed si klade tyto ot\u00e1zky: Ptaj\u00ed se lid\u00e9, kte\u0159\u00ed se ptaj\u00ed, zda zinek rezav\u00ed? Je d\u016fle\u017eit\u00e9 zn\u00e1t chov\u00e1n\u00ed zinku v r\u016fzn\u00fdch prost\u0159ed\u00edch. Tento \u010dl\u00e1nek popisuje vlastnosti zinku, jeho reakci se vzduchem a vodou a tak\u00e9 nasti\u0148uje rozd\u00edly mezi slitinami zinku, zinkov\u00fdm kovem a pozinkovan\u00fdm kovem. Zinek je \u0161iroce pou\u017e\u00edvan\u00fd kov. V\u011bt\u0161ina lid\u00ed si klade ot\u00e1zku, zda zinek rezav\u00ed. Zinek je tak\u00e9 \u017e\u00e1douc\u00ed, proto\u017ee ve srovn\u00e1n\u00ed s jin\u00fdmi kovy nepodl\u00e9h\u00e1 snadno korozi. Uplat\u0148uje se v konstrukc\u00edch, automobilech, dom\u00e1c\u00edch v\u00fdrobc\u00edch a pr\u016fmyslov\u00fdch sou\u010d\u00e1stech. P\u0159i reakci se vzduchem vytv\u00e1\u0159\u00ed zinek ochrann\u00fd povlak. Tato vrstva pom\u016f\u017ee odd\u00e1lit po\u0161kozen\u00ed. Zinek nerezav\u00ed jako \u017eelezo. P\u0159esto je schopen v n\u00e1ro\u010dn\u00fdch podm\u00ednk\u00e1ch korodovat. Na zinek m\u016f\u017ee \u010dasem p\u016fsobit vlhkost, s\u016fl a zne\u010di\u0161t\u011bn\u00ed. Je d\u016fle\u017eit\u00e9 zn\u00e1t chov\u00e1n\u00ed zinku. Pom\u00e1h\u00e1 to jednotlivc\u016fm p\u0159i vhodn\u00e9m v\u00fdb\u011bru materi\u00e1l\u016f. Pou\u017e\u00edv\u00e1 se tak\u00e9 p\u0159i ochran\u011b kov\u016f a zvy\u0161ov\u00e1n\u00ed jejich \u017eivotnosti ve v\u011bt\u0161in\u011b aplikac\u00ed.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"P\u0159epnut\u00ed tabulky obsahu\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">P\u0159ep\u00edna\u010d<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #7c7c7c;color:#7c7c7c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #7c7c7c;color:#7c7c7c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#What_Is_Zinc\" >Co je zinek?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_Zinc_Rust\" >Rezav\u00ed zinek?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_Zinc_Metal_Rust\" >Rezav\u00ed zinkov\u00fd kov?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_Zinc_Alloy_Rust\" >Rezav\u00ed zinkov\u00e1 slitina?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_Zinc-Plated_Metal_Rust\" >Rezav\u00ed pozinkovan\u00fd kov?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Zinc_and_Its_Application_in_Corrosion_Prevention\" >Zinek a jeho pou\u017eit\u00ed v prevenci koroze<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Protective_Properties_of_Zinc_on_Other_Metals\" >Ochrann\u00e9 vlastnosti zinku na jin\u00e9 kovy<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Controlling_Factors_of_Zinc_Corrosion\" >Kontroln\u00ed faktory koroze zinku<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Myths_About_Zinc_Rusting\" >M\u00fdty o rezav\u011bn\u00ed zinku<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Myth_1_Zinc_rusts_like_iron\" >M\u00fdtus 1: Zinek rezav\u00ed jako \u017eelezo.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Myth_2_The_zinc_finishes_do_not_fade_away\" >M\u00fdtus 2:Zinkov\u00e9 povrchov\u00e9 \u00fapravy nezmiz\u00ed.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Myth_3_Metal_with_a_scratched_zinc_coating_will_rust_just_as_fast\" >M\u00fdtus 3: Kov s po\u0161kr\u00e1ban\u00fdm zinkov\u00fdm povlakem zrezne stejn\u011b rychle.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Myth_4_Galvanized_metal_needs_no_attention\" >M\u00fdtus 4: Pozinkovan\u00e9mu kovu nen\u00ed t\u0159eba v\u011bnovat pozornost.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Zinc_and_Zinc_Alloys_Use\" >Pou\u017eit\u00ed zinku a slitin zinku<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Roofing_and_Construction_Materials\" >St\u0159e\u0161n\u00ed krytiny a stavebn\u00ed materi\u00e1ly:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Galvanized_Steel\" >Pozinkovan\u00e1 ocel:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Plumbing_and_Water_Systems\" >Vodovodn\u00ed a kanaliza\u010dn\u00ed syst\u00e9my:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Automotive_Parts\" >Automobilov\u00e9 d\u00edly:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Die-Casting_and_Industrial_Equipment\" >Tlakov\u00e9 lit\u00ed a pr\u016fmyslov\u00e1 za\u0159\u00edzen\u00ed:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Ornamental_and_Home_Furnishing\" >Okrasn\u00e9 a bytov\u00e9 dopl\u0148ky:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Maintenance_Tips\" >Tipy pro \u00fadr\u017ebu<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Regular_Cleaning\" >Pravideln\u00e9 \u010di\u0161t\u011bn\u00ed:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Avoid_Harsh_Chemicals\" >Vyhn\u011bte se drsn\u00fdm chemik\u00e1li\u00edm:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Inspect_for_Damage\" >Zkontrolujte, zda nedo\u0161lo k po\u0161kozen\u00ed:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Repair_Scratches\" >Oprava \u0161kr\u00e1banc\u016f:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Management_Environmental_Exposure\" >Management Environment\u00e1ln\u00ed expozice:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#How_Zinc_Protects\" >Jak zinek chr\u00e1n\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Why_Does_Zinc_Corrode_A_Look_at_the_Chemistry\" >Pro\u010d zinek koroduje? Pohled na chemii<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Zinc_Does_Not_Rust_Like_Iron\" >Zinek nerezav\u00ed jako \u017eelezo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Formation_of_Zinc_Oxide\" >Tvorba oxidu zine\u010dnat\u00e9ho<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Reaction_With_Moisture\" >Reakce s vlhkost\u00ed<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Protective_Zinc_Carbonate_Layer\" >Ochrann\u00e1 vrstva uhli\u010ditanu zine\u010dnat\u00e9ho.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Environmental_Conditions_that_Enhance_Corrosion\" >Podm\u00ednky prost\u0159ed\u00ed, kter\u00e9 zvy\u0161uj\u00ed korozi.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Protective_and_Controlled_Corrosion\" >Ochrann\u00e1 a \u0159\u00edzen\u00e1 koroze.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#About_Us_%E2%80%93_GC_Precision_Mould\" >O n\u00e1s - GC Precision Mould<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#The_Reason_to_Select_GC_Precision_Mould\" >D\u016fvod, pro\u010d zvolit formu GC Precision Mould<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Chinas_Best_Provider\" >Nejlep\u0161\u00ed poskytovatel v \u010c\u00edn\u011b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#High_Precision_Quality\" >Vysok\u00e1 kvalita p\u0159esnosti<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Strong_Engineering_Support\" >Siln\u00e1 technick\u00e1 podpora<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#On-Time_and_Dependable_Services\" >V\u010dasn\u00e9 a spolehliv\u00e9 slu\u017eby<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Customer_First_Service\" >Slu\u017eby z\u00e1kazn\u00edk\u016fm na prvn\u00edm m\u00edst\u011b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Global_Experience\" >Glob\u00e1ln\u00ed zku\u0161enosti<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Conclusion\" >Z\u00e1v\u011br<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Frequently_Asked_Questions_about_Zinc_and_Zinc_Corrosion\" >\u010casto kladen\u00e9 ot\u00e1zky o zinku a zinkov\u00e9 korozi.<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_zinc_rust\" >Rezav\u00ed zinek?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_zinc_metal_rust\" >Rezav\u00ed zinkov\u00fd kov?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-47\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_zinc_alloy_rust\" >Koroduje zinkov\u00e1 slitina?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-48\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#Does_zinc-plated_metal_rust\" >Rezav\u00ed pozinkovan\u00fd kov?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-49\" href=\"https:\/\/aludiecasting.com\/cs\/nerezavi-zinek\/#What_can_I_do_to_ensure_zinc_does_not_corrode\" >Co mohu ud\u011blat pro to, aby zinek nekorodoval?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_Zinc\"><\/span><b>Co je zinek?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/2-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20534 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/2-3.jpg\" alt=\"Rezav\u00ed zinek? Pozn\u00e1n\u00ed zinku a jeho korozn\u00edch vlastnost\u00ed\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/2-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/2-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\"><a href=\"https:\/\/aludiecasting.com\/cs\/bod-tani-zinku\/\"><strong>Zinek<\/strong><\/a> je modrob\u00edl\u00fd kov. P\u0159i pokojov\u00e9 teplot\u011b je k\u0159ehk\u00fd, po zah\u0159\u00e1t\u00ed se st\u00e1v\u00e1 kujn\u00fdm. Zinek nen\u00ed tak odoln\u00fd jako ocel, ale je odoln\u011bj\u0161\u00ed v\u016f\u010di korozi. Z tohoto d\u016fvodu se zinek st\u0159\u00edk\u00e1 na jin\u00e9 kovy, aby je chr\u00e1nil p\u0159ed koroz\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Koroze zinku se obvykle zam\u011b\u0148uje s koroz\u00ed. Rez je oxid \u017eelezit\u00fd. Zinek \u017eelezo neobsahuje, a proto technicky vzato nerezav\u00ed jako \u017eelezo. M\u00edsto toho se zinek obaluje jinou formou, kterou je oxid zine\u010dnat\u00fd.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_Zinc_Rust\"><\/span><b>Rezav\u00ed zinek?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/9-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-20541 size-full\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/9-2.jpg\" alt=\"Rezav\u00ed zinek?\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/9-2.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/9-2-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Velkou ot\u00e1zkou, kterou si v\u011bt\u0161ina lid\u00ed klade, je, zda zinek nerezav\u00ed. Odpov\u011b\u010f na tuto ot\u00e1zku je sp\u00ed\u0161e z\u00e1porn\u00e1. Zinek nerezav\u00ed do \u010dervenohn\u011bd\u00e9 barvy jako \u017eelezo nebo ocel. M\u00edsto toho se zinek p\u0159i vystaven\u00ed vzduchu m\u00eds\u00ed s kysl\u00edkem a vytv\u00e1\u0159\u00ed ochrann\u00fd povlak \u0161edob\u00edl\u00e9 barvy zn\u00e1m\u00fd jako oxid zine\u010dnat\u00fd.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Takov\u00fd povlak zabra\u0148uje dal\u0161\u00ed korozi kovu. Zinek je tak\u00e9 ve srovn\u00e1n\u00ed se \u017eelezem mnohem odoln\u011bj\u0161\u00ed proti korozi, a to i za vlhk\u00e9ho nebo mokr\u00e9ho po\u010das\u00ed. Koroze zinku v\u0161ak m\u016f\u017ee prob\u00edhat pomalu v pr\u016fb\u011bhu \u010dasu, pokud se setk\u00e1 s extr\u00e9mn\u011b siln\u00fdmi kyselinami nebo mo\u0159skou vodou.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Stru\u010dn\u011b \u0159e\u010deno, \u201crezav\u00ed zinek\u201d? V tradi\u010dn\u00edm smyslu ne. D\u00e1v\u00e1 mu ochrann\u00fd povlak, kter\u00fd kovu skute\u010dn\u011b vydr\u017e\u00ed mnoho let.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_Zinc_Metal_Rust\"><\/span><b>Rezav\u00ed zinkov\u00fd kov?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/5-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20537 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/5-3.jpg\" alt=\"Rezav\u00ed zinkov\u00fd kov?\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/5-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/5-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Dal\u0161\u00ed \u010dasto kladenou ot\u00e1zkou je, zda zinkov\u00fd kov nerezav\u00ed. Kovov\u00fd zinek v \u010dist\u00e9m stavu se na vzduchu m\u00eds\u00ed s kysl\u00edkem a vytv\u00e1\u0159\u00ed ochrannou vrstvu. Tato vrstva br\u00e1n\u00ed dal\u0161\u00ed oxidaci. Kovov\u00fd zinek tedy nerezav\u00ed jako \u017eelezo.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Zinkov\u00fd kov lze pou\u017e\u00edt i ve venkovn\u00edch podm\u00ednk\u00e1ch. Je schopen \u017e\u00edt mnoho let, ani\u017e by v\u00fdrazn\u011b degradoval. M\u016f\u017ee v\u0161ak b\u00fdt zni\u010den monstr\u00f3zn\u00edmi kyselinami nebo alkalick\u00fdmi roztoky. Pro vysv\u011btlen\u00ed: kovov\u00fd zinek, kter\u00fd je v kontaktu se silnou kyselinou s\u00edrovou, se zhor\u0161uje zv\u00fd\u0161enou rychlost\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400\">To vyvol\u00e1v\u00e1 ot\u00e1zku: Je rez zinkov\u00e9ho kovu d\u016fle\u017eitou ot\u00e1zkou pro in\u017een\u00fdry a majitele dom\u016f? V\u00fdkonnost zinkov\u00e9ho kovu lze ch\u00e1pat jako p\u0159\u00ednosnou p\u0159i v\u00fdb\u011bru st\u0159e\u0161n\u00ed krytiny, klemp\u00ed\u0159sk\u00fdch prvk\u016f a n\u00e1t\u011brov\u00fdch hmot.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_Zinc_Alloy_Rust\"><\/span><b>Rezav\u00ed zinkov\u00e1 slitina?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/6-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20538 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/6-3.jpg\" alt=\"Rezav\u00ed zinkov\u00e1 slitina?\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/6-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/6-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Zinek se tak\u00e9 obvykle pou\u017e\u00edv\u00e1 s jin\u00fdmi kovy jako slitina. Jedn\u00e1 se o slitiny, kter\u00e9 zvy\u0161uj\u00ed pevnost a k\u0159ehkost. B\u011b\u017en\u00e1 slitina je zinek-m\u011b\u010f, zinek-hlin\u00edk nebo zinek-ho\u0159\u010d\u00edk.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Ot\u00e1zka, kterou si jednotlivci kladou, zn\u00ed: Rezav\u00ed zinkov\u00e1 slitina? \u010cist\u00fd zinek netvo\u0159\u00ed \u010dervenou rez a ani zinkov\u00e9 slitiny. M\u00edsto toho se na nich vytv\u00e1\u0159\u00ed povlak oxidu. Jin\u00e9 kovy se vyskytuj\u00ed, i kdy\u017e mohou modifikovat chov\u00e1n\u00ed koroze.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Slitina zinku a hlin\u00edku m\u016f\u017ee ve slan\u00e9m prost\u0159ed\u00ed korodovat o n\u011bco rychleji ne\u017e \u010dist\u00fd zinek. Na ot\u00e1zku, zda zinkov\u00e1 slitina koroduje, v\u0161ak v\u00edcem\u00e9n\u011b plat\u00ed odpov\u011b\u010f ano i ne, p\u0159i\u010dem\u017e ochrann\u00e1 opat\u0159en\u00ed a \u010dast\u00e1 \u00fadr\u017eba zvy\u0161uj\u00ed jej\u00ed \u017eivotnost.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_Zinc-Plated_Metal_Rust\"><\/span><b>Rezav\u00ed pozinkovan\u00fd kov?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Aby se zabr\u00e1nilo korozi, byl na kovy, zejm\u00e9na na v\u011bt\u0161inu z nich, nanesen zinek. Tento proces se naz\u00fdv\u00e1 galvanizace. Vrstva zinku se nan\u00e1\u0161\u00ed na podkladov\u00fd kov, kter\u00fdm je ve v\u011bt\u0161in\u011b p\u0159\u00edpad\u016f ocel, aby se zabr\u00e1nilo korozi.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Lid\u00e9 se ptaj\u00ed, zda pozinkovan\u00fd kov nerezav\u00ed. Zinek ne, ale kdy\u017e se n\u00e1t\u011br po\u0161kr\u00e1be, podkladov\u00e1 ocel m\u016f\u017ee zreziv\u011bt. Pozinkovan\u00e1 ocel nerezav\u00ed snadno, ani kdy\u017e nem\u00e1 po dlouhou dobu such\u00e9 prost\u0159ed\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Kov Pozinkovan\u00fd kov by m\u011bl b\u00edl\u00e9 skvrny od koroze. Nejedn\u00e1 se o rez, ale o produkty koroze zinku. Nep\u016fsob\u00ed na kovu jako rez. V souladu s t\u00edm rez na pozinkovan\u00e9m kovu prim\u00e1rn\u011b ano nen\u00ed, vzhledem k tomu, \u017ee se ne\u0161kr\u00e1be.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Zinc_and_Its_Application_in_Corrosion_Prevention\"><\/span><b>Zinek a jeho pou\u017eit\u00ed v prevenci koroze<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/1-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20542 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/1-3.jpg\" alt=\"Zinek a jeho pou\u017eit\u00ed v prevenci koroze\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/1-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/1-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Dal\u0161\u00edmi kovy, kter\u00e9 jsou pokryty zinkem, jsou ocel a \u017eelezo. Vytv\u00e1\u0159\u00ed povlak, kter\u00fd odstra\u0148uje vlhkost a kysl\u00edk, kter\u00e9 jsou pot\u0159ebn\u00e9 pro vznik rzi. Povlak lze po\u0161kr\u00e1bat, zinek v\u0161ak st\u00e1le poskytuje kovu ochranu ob\u011btn\u00ed koroz\u00ed, to znamen\u00e1, \u017ee zinek koroduje jako prvn\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Zinek nakonec vytvo\u0159\u00ed kovov\u00fd povlak, kter\u00fd d\u00e1le sni\u017euje rychlost koroze. Proto na n\u00e1sleduj\u00edc\u00ed ot\u00e1zky: Rezav\u00ed zinek, Rezav\u00ed kovov\u00fd zinek, b\u00fdvaj\u00ed kladn\u00e9 odpov\u011bdi. Zinek \u010din\u00ed kovy odoln\u00fdmi a pevn\u00fdmi v\u016f\u010di nep\u0159\u00edzniv\u00fdm klimatick\u00fdm podm\u00ednk\u00e1m.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Protective_Properties_of_Zinc_on_Other_Metals\"><\/span><b>Ochrann\u00e9 vlastnosti zinku na jin\u00e9 kovy<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/4-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20536 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/4-3.jpg\" alt=\"Ochrann\u00e9 vlastnosti zinku na jin\u00e9 kovy\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/4-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/4-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Zinek se obvykle pou\u017e\u00edv\u00e1 na jin\u00e9 kovy, zejm\u00e9na na \u017eelezo a ocel, aby se zabr\u00e1nilo reziv\u011bn\u00ed. Jednou z takov\u00fdch b\u011b\u017en\u00fdch metod je galvanizace, p\u0159i n\u00ed\u017e se kov pokryje povrchem pokryt\u00fdm zinkovou vrstvou. Tento povlak slou\u017e\u00ed k ochran\u011b p\u0159ed pronik\u00e1n\u00edm vlhkosti a kysl\u00edku do kovu pod n\u00edm.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Zinkov\u00e1 krytina je po\u0161kr\u00e1bateln\u00e1 nebo se m\u016f\u017ee po\u0161kodit, p\u0159esto m\u016f\u017ee chr\u00e1nit z\u00e1kladn\u00ed kov. Je to d\u00edky jevu zn\u00e1m\u00e9mu jako katodick\u00e1 ochrana. Zinek je ten, kter\u00fd koroduje, aby zachr\u00e1nil \u017eelezo nebo ocel. D\u00edky tomu jsou pozinkovan\u00e9 kovy mimo\u0159\u00e1dn\u011b siln\u00e9 a odoln\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Z toho vypl\u00fdv\u00e1, \u017ee koroze pozinkovan\u00e9ho kovu nep\u0159edstavuje velk\u00fd probl\u00e9m. Ocel, kter\u00e1 je pota\u017eena zinkem, vydr\u017e\u00ed des\u00edtky let i ve vlhk\u00e9m nebo mokr\u00e9m venkovn\u00edm prost\u0159ed\u00ed. Drobn\u00e9 b\u00edl\u00e9 skvrny koroze byste na povrchu snadno identifikovali, ale nejedn\u00e1 se o rez, pouze o oxid zine\u010dnat\u00fd. Neoslabuj\u00ed kov.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Zinek m\u00e1 mnohostrann\u00e9 ochrann\u00e9 vlastnosti. Pou\u017e\u00edv\u00e1 se ve st\u0159e\u0161n\u00edch krytin\u00e1ch, plotech, mostech, vodovodn\u00edch trubk\u00e1ch a v automobilov\u00fdch d\u00edlech. Ve v\u0161ech p\u0159\u00edpadech, kter\u00e9 maj\u00ed zinkovou vrstvu, dod\u00e1vaj\u00ed podkladov\u00e9mu kovu pevnost a bezpe\u010dnost.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Pov\u011bdom\u00ed o ochran\u011b jin\u00fdch kov\u016f zinkem m\u016f\u017ee v\u00e9st k lep\u0161\u00edmu rozhodov\u00e1n\u00ed in\u017een\u00fdr\u016f, stavitel\u016f a majitel\u016f dom\u016f o dlouhodob\u011b odoln\u00fdch materi\u00e1lech proti korozi.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Controlling_Factors_of_Zinc_Corrosion\"><\/span><b>Kontroln\u00ed faktory koroze zinku<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">P\u0159esto\u017ee zinek nerezav\u00ed jako \u017eelezo, v n\u011bkter\u00fdch p\u0159\u00edpadech koroduje. Zinek a zinkem pokryt\u00e9 kovy lze spr\u00e1vn\u011b chr\u00e1nit, pokud si uv\u011bdom\u00edte tyto faktory.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><b>Vlhkost:<\/b><span style=\"font-weight: 400\"> Zinek se postupn\u011b zhor\u0161uje, kdykoli je pravideln\u011b vystaven vlhkosti nebo vod\u011b. V pr\u016fb\u011bhu \u010dasu m\u016f\u017ee doch\u00e1zet k drobn\u00fdm chemick\u00fdm reakc\u00edm, kter\u00e9 mohou b\u00fdt zp\u016fsobeny de\u0161t\u011bm, rosou nebo kondenzac\u00ed a mohou naru\u0161it vrstvu zinku.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tky:<\/b><span style=\"font-weight: 400\"> Koroze \u017eivotn\u00edho prost\u0159ed\u00ed: Koroze zinku m\u016f\u017ee b\u00fdt zp\u016fsobena pr\u016fmyslov\u00fdm zne\u010di\u0161t\u011bn\u00edm, kysel\u00fdmi de\u0161ti a chemick\u00fdmi l\u00e1tkami v \u017eivotn\u00edm prost\u0159ed\u00ed. Ochrann\u00e1 vrstva tvo\u0159en\u00e1 oxidem zine\u010dnat\u00fdm je n\u00e1chyln\u00e1 ke korozi jak\u00fdmikoli kysel\u00fdmi slou\u010deninami, jako je oxid si\u0159i\u010dit\u00fd.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>S\u016fl:<\/b><span style=\"font-weight: 400\"> Ke korozi zinku p\u0159isp\u00edvaj\u00ed pob\u0159e\u017e\u00ed se slan\u00fdm vzduchem nebo pob\u0159e\u017e\u00ed, kter\u00e1 jsou v p\u0159\u00edm\u00e9m kontaktu se slanou vodou. S\u016fl urychluje rychlost chemick\u00fdch reakc\u00ed a zp\u016fsobuje rychlej\u0161\u00ed rozklad zinku.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Teplota:<\/b><span style=\"font-weight: 400\"> Pokud je teplota vysok\u00e1, m\u016f\u017ee to urychlit rychlost koroze. Zinek je n\u00e1chyln\u011bj\u0161\u00ed k degradaci ve vlhk\u00e9m podneb\u00ed ve srovn\u00e1n\u00ed s chladn\u00fdm a such\u00fdm podneb\u00edm.<\/span><\/li>\n<li style=\"font-weight: 400\"><b>\u0160kr\u00e1bance a po\u0161kozen\u00ed: <\/b><span style=\"font-weight: 400\">\u0160kr\u00e1bance a po\u0161kozen\u00ed jak\u00e9hokoli zinkov\u00e9ho povlaku mohou odhalit podkladov\u00fd kov. U pozinkovan\u00e9 oceli se m\u016f\u017ee koroze v p\u0159\u00edpad\u011b po\u0161kozen\u00ed ochrann\u00e9 vrstvy roz\u0161\u00ed\u0159it na podkladov\u00fd kov.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">P\u0159esto je zinek mnohem m\u00e9n\u011b n\u00e1chyln\u00fd ke korozi ne\u017e \u017eelezo nebo ocel. Po zji\u0161t\u011bn\u00ed t\u011bchto nebezpe\u010d\u00ed m\u016f\u017eete b\u00fdt schopni odpov\u011bd\u011bt na ot\u00e1zku, zda zinek l\u00e9pe rezav\u00ed, a ud\u011blat n\u011bco pro zaji\u0161t\u011bn\u00ed jeho existence.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Jednoduch\u00e1 \u00fadr\u017eba, jako je \u010di\u0161t\u011bn\u00ed povrchu, nevystavov\u00e1n\u00ed tvrd\u00fdm chemik\u00e1li\u00edm a po\u0161kr\u00e1b\u00e1n\u00ed, m\u016f\u017ee v\u00fdrazn\u011b prodlou\u017eit \u017eivotnost zinku a pozinkovan\u00fdch kov\u016f.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Myths_About_Zinc_Rusting\"><\/span><b>M\u00fdty o rezav\u011bn\u00ed zinku<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/3-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20535 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/3-3.jpg\" alt=\"M\u00fdty o rezav\u011bn\u00ed zinku\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/3-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/3-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">Zinek a koroze nejsou dob\u0159e zn\u00e1m\u00e9. V\u011bt\u0161ina lid\u00ed myln\u011b ur\u010duje korozi zinku jako rez, co\u017e vede k vytv\u00e1\u0159en\u00ed m\u00fdt\u016f. Znalost pravdy umo\u017e\u0148uje vhodn\u00e9 pou\u017eit\u00ed zinku.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Myth_1_Zinc_rusts_like_iron\"><\/span><b>M\u00fdtus 1: Zinek rezav\u00ed jako \u017eelezo.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Skute\u010dn\u00e1 rez je oxid \u017eelezit\u00fd a m\u00e1 \u010dervenohn\u011bd\u00fd vzhled. Zinek neobsahuje \u017eelezo, a proto nerezav\u00ed. P\u0159i reakci zinku s kysl\u00edkem vznik\u00e1 \u0161edob\u00edl\u00fd povlak zvan\u00fd oxid zine\u010dnat\u00fd. Tento povlak ve skute\u010dnosti kov chr\u00e1n\u00ed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Myth_2_The_zinc_finishes_do_not_fade_away\"><\/span><b>M\u00fdtus 2:Zinkov\u00e9 povrchov\u00e9 \u00fapravy nezmiz\u00ed.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>Skute\u010dnost:<\/b><span style=\"font-weight: 400\"> Zinek je velmi dobrou ochranou, ale \u010dasem se m\u016f\u017ee opot\u0159ebovat a t\u00edm i zkorodovat, zejm\u00e9na v extr\u00e9mn\u00edch podm\u00ednk\u00e1ch, jako je pob\u0159e\u017e\u00ed, kysel\u00e9 de\u0161t\u011b nebo pr\u016fmyslov\u00e9 zne\u010di\u0161t\u011bn\u00ed. M\u00e1 dlouhou \u017eivotnost, kter\u00e1 se zvy\u0161uje \u010dastou \u00fadr\u017ebou.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Myth_3_Metal_with_a_scratched_zinc_coating_will_rust_just_as_fast\"><\/span><b>M\u00fdtus 3: Kov s po\u0161kr\u00e1ban\u00fdm zinkov\u00fdm povlakem zrezne stejn\u011b rychle.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>Skute\u010dnost:<\/b><span style=\"font-weight: 400\"> P\u0159esto\u017ee se zinkov\u00fd povlak m\u016f\u017ee po\u0161kr\u00e1bat, je zn\u00e1mo, \u017ee poskytuje \u010dastou ochranu podkladov\u00e9ho kovu pomoc\u00ed katodick\u00e9 ochrany. Zinek koroduje jako prvn\u00ed, proto dosahuje \u0159e\u0161en\u00ed ob\u011btn\u00ed vrstvy a pom\u00e1h\u00e1 udr\u017eet rezav\u011bn\u00ed z\u00e1kladn\u00edho kovu na uzd\u011b.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Myth_4_Galvanized_metal_needs_no_attention\"><\/span><b>M\u00fdtus 4: Pozinkovan\u00e9mu kovu nen\u00ed t\u0159eba v\u011bnovat pozornost.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><b>Pravda: <\/b><span style=\"font-weight: 400\">Pozinkovan\u00e9 kovy nejsou nep\u0159ekonateln\u00e9. V pr\u016fb\u011bhu \u010dasu jsou ne\u010distoty, \u00falomky a zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tky schopny sn\u00ed\u017eit \u00fa\u010dinnost ochrann\u00e9 vrstvy zinku. K zaji\u0161t\u011bn\u00ed jej\u00edch ochrann\u00fdch vlastnost\u00ed slou\u017e\u00ed myt\u00ed a kontroly.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Znalost t\u011bchto m\u00fdt\u016f by jednotlivc\u016fm umo\u017enila odpov\u011bd\u011bt na tyto ot\u00e1zky: Zinek rezav\u00ed? Rezav\u00ed zinek? Koroduje zinkov\u00fd kov spr\u00e1vn\u011b? Zinek nekoroduje snadno, nicm\u00e9n\u011b v\u00fdzkum a spr\u00e1vn\u00e1 \u00fadr\u017eba mohou nejv\u00edce pomoci prodlou\u017eit jeho \u017eivotnost.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Zinc_and_Zinc_Alloys_Use\"><\/span><b>Pou\u017eit\u00ed zinku a slitin zinku<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Zinek a slitiny jsou velmi \u017e\u00e1dan\u00e9 d\u00edky sv\u00e9 pevnosti, odolnosti proti korozi a univerz\u00e1lnosti. Jsou velmi d\u016fle\u017eit\u00e9 ve v\u011bt\u0161in\u011b podnik\u016f, a\u0165 u\u017e ve stavebnictv\u00ed nebo p\u0159i v\u00fdrob\u011b automobil\u016f.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Roofing_and_Construction_Materials\"><\/span><b>St\u0159e\u0161n\u00ed krytiny a stavebn\u00ed materi\u00e1ly:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">St\u0159e\u0161n\u00ed krytina, \u017elaby a oplechov\u00e1n\u00ed se prov\u00e1d\u00ed pomoc\u00ed zinkov\u00fdch plech\u016f a slitin zinku. Ty jsou odoln\u00e9 proti korozi, a proto st\u0159echy vydr\u017e\u00ed des\u00edtky let, ne\u017e dojde k jejich v\u00e1\u017en\u00e9mu po\u0161kozen\u00ed. To je d\u016fvod, pro\u010d si lze obvykle polo\u017eit ot\u00e1zku: Nekoroduje zinkov\u00e1 slitina? Ve v\u011bt\u0161in\u011b t\u011bchto pou\u017eit\u00ed tomu tak nen\u00ed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Galvanized_Steel\"><\/span><b>Pozinkovan\u00e1 ocel:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinek se tak\u00e9 pou\u017e\u00edv\u00e1 p\u0159i povrchov\u00e9 \u00faprav\u011b oceli k odstran\u011bn\u00ed rzi. Pozinkovan\u00e1 ocel se pou\u017e\u00edv\u00e1 v plotech, mostech, potrub\u00edch a tak\u00e9 ve vozidlech. Povlak zinku chr\u00e1n\u00ed ocel, proto\u017ee zakryje i po\u0161kr\u00e1ban\u00fd povrch. D\u00edky tomu je koroze pozinkovan\u00e9ho kovu vz\u00e1cn\u00fdm probl\u00e9mem.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Plumbing_and_Water_Systems\"><\/span><b>Vodovodn\u00ed a kanaliza\u010dn\u00ed syst\u00e9my:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Trubky pota\u017een\u00e9 zinkem odol\u00e1vaj\u00ed korozi zp\u016fsoben\u00e9 vodou a vlhkost\u00ed. D\u00edky tomu je lze pou\u017e\u00edt ve vodovodn\u00edch syst\u00e9mech, n\u00e1dr\u017e\u00edch na vodu a venkovn\u00edch bateri\u00edch. D\u00edky zinku jsou odoln\u00e9 p\u0159i pou\u017eit\u00ed v obytn\u00fdch a pr\u016fmyslov\u00fdch prostorech.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Automotive_Parts\"><\/span><b>Automobilov\u00e9 d\u00edly:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Velk\u00fd po\u010det sou\u010d\u00e1st\u00ed automobil\u016f obsahuje zinkov\u00e9 slitiny nebo zinkovou povrchovou \u00fapravu. Pat\u0159\u00ed mezi n\u011b panely karoserie, dr\u017e\u00e1ky a d\u00edly motoru. Zinek zabra\u0148uje korozi, co\u017e prokazateln\u011b prodlu\u017euje \u017eivotnost vozidla v p\u0159\u00edpad\u011b, \u017ee je vystaveno de\u0161ti, silni\u010dn\u00ed soli a zm\u011bn\u00e1m teplot.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Die-Casting_and_Industrial_Equipment\"><\/span><b>Tlakov\u00e9 lit\u00ed a pr\u016fmyslov\u00e1 za\u0159\u00edzen\u00ed:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zamak je druh zinkov\u00e9 slitiny, kter\u00e1 se odl\u00e9v\u00e1 pod tlakem pro v\u00fdrobu slo\u017eit\u00fdch mechanick\u00fdch sou\u010d\u00e1st\u00ed. Jsou tvrd\u00e9, p\u0159esn\u00e9 a nepodl\u00e9haj\u00ed korozi, proto jsou vhodn\u00e9 pro stroje, n\u00e1stroje a elektroniku.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ornamental_and_Home_Furnishing\"><\/span><b>Okrasn\u00e9 a bytov\u00e9 dopl\u0148ky:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Slitiny zinku se pou\u017e\u00edvaj\u00ed v bateri\u00edch, dve\u0159n\u00edch klik\u00e1ch, okenn\u00edch r\u00e1mech a kov\u00e1n\u00ed. Jejich odolnost proti korozi zaji\u0161\u0165uje, \u017ee z\u016fst\u00e1vaj\u00ed nov\u00e9 i po dlouh\u00e9 dob\u011b.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Po sezn\u00e1men\u00ed s t\u011bmito aplikacemi nen\u00ed t\u011b\u017ek\u00e9 pochopit, pro\u010d je nutn\u00e9 kl\u00e1st si ot\u00e1zky typu: rezav\u00ed zinkov\u00fd kov nebo nerezav\u00ed zinkov\u00e1 slitina. Zinek nerezav\u00ed s\u00e1m o sob\u011b a z\u00e1rove\u0148 nab\u00edz\u00ed prodlou\u017een\u00ed \u017eivotnosti jin\u00fdm kov\u016fm, se kter\u00fdmi je kombinov\u00e1n nebo jimi\u017e je pota\u017een.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Maintenance_Tips\"><\/span><b>Tipy pro \u00fadr\u017ebu<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/8-3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-20540 size-full aligncenter\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/8-3.jpg\" alt=\"M\u00fdty o rezav\u011bn\u00ed zinku\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/8-3.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/8-3-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">A\u010dkoli <a href=\"https:\/\/www.thediecasting.com\/zinc-plating-vs-nickel-plating\/\" target=\"_blank\" rel=\"noopener\"><strong>pozinkovan\u00e9<\/strong> <\/a>a kovy na b\u00e1zi zinku nekoroduj\u00ed, lze je udr\u017eovat, aby se prodlou\u017eila jejich \u017eivotnost. Lze tak\u00e9 dodr\u017eovat n\u011bkolik jednoduch\u00fdch pravidel, kter\u00e1 pomohou zabr\u00e1nit po\u0161kozen\u00ed a udr\u017eet kov v dobr\u00e9m stavu a funk\u010dn\u00ed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Regular_Cleaning\"><\/span><b>Pravideln\u00e9 \u010di\u0161t\u011bn\u00ed:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinek m\u016f\u017ee b\u00fdt neutralizov\u00e1n ne\u010distotami, prachem a zne\u010di\u0161\u0165uj\u00edc\u00edmi l\u00e1tkami. Zinkov\u00e9 povrchy ot\u00edrejte jemnou vodou a m\u00fddlem. Nepou\u017e\u00edvejte hrub\u00e9 chemick\u00e9 prost\u0159edky, kter\u00e9 by mohly ochrannou vrstvu zni\u010dit.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Avoid_Harsh_Chemicals\"><\/span><b>Vyhn\u011bte se drsn\u00fdm chemik\u00e1li\u00edm:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Kysel\u00e9 nebo alkalick\u00e9 roztoky mohou zp\u016fsobit rychlej\u0161\u00ed korozi zinku. Zinek by nikdy nem\u011bl b\u00fdt vystaven siln\u00fdm kyselin\u00e1m, pr\u016fmyslov\u00fdm chemik\u00e1li\u00edm nebo slan\u00fdm roztok\u016fm.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Inspect_for_Damage\"><\/span><b>Zkontrolujte, zda nedo\u0161lo k po\u0161kozen\u00ed:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">V\u0161imn\u011bte si \u0161kr\u00e1banc\u016f, prom\u00e1\u010dklin nebo jin\u00fdch po\u0161kozen\u00ed na kontroln\u00edch zinkov\u00fdch povlac\u00edch. Sebemen\u0161\u00ed \u0161kr\u00e1bance mohou odhalit kov pod nimi. P\u0159esto\u017ee zinek poskytuje katodickou ochranu, lze jej pou\u017e\u00edt k oprav\u011b po\u0161kozen\u00fdch oblast\u00ed, a t\u00edm poskytnout celkovou ochranu.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Repair_Scratches\"><\/span><b>Oprava \u0161kr\u00e1banc\u016f:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">V p\u0159\u00edpad\u011b po\u0161kr\u00e1b\u00e1n\u00ed pozinkovan\u00e9ho kovu jej nat\u0159ete barvou nebo n\u00e1t\u011brem obohacen\u00fdm o zinek. T\u00edm zabr\u00e1n\u00edte p\u0159\u00edpadn\u00e9 korozi podkladov\u00e9ho kovu a prodlou\u017e\u00edte \u017eivotnost p\u0159edm\u011btu.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Management_Environmental_Exposure\"><\/span><b>Management Environment\u00e1ln\u00ed expozice:<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Dal\u0161\u00ed opat\u0159en\u00ed jsou d\u016fle\u017eit\u00e1 v m\u00edstech s vysokou vlhkost\u00ed, slan\u00fdm vzduchem nebo pr\u016fmyslovou kontaminac\u00ed. Korozi lze omezit pou\u017eit\u00edm ochrann\u00e9ho n\u00e1t\u011bru nebo krytu nebo skladov\u00e1n\u00edm v\u00fdrobku v interi\u00e9ru.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Pokud se tyto tipy vezmou v \u00favahu, mohou nov\u00ed majitel\u00e9 dom\u016f, in\u017een\u00fd\u0159i a pr\u016fmyslov\u00e9 podniky zaru\u010dit, \u017ee zinek nerezav\u00ed, zinkov\u00fd kov nerezav\u00ed a pozinkovan\u00fd kov nerezav\u00ed. Zinek a pozinkovan\u00e9 typy kov\u016f maj\u00ed p\u0159i spr\u00e1vn\u00e9 p\u00e9\u010di \u017eivotnost des\u00edtky let a jejich pevnost a vzhled se neztr\u00e1c\u00ed.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Zinc_Protects\"><\/span><b>Jak zinek chr\u00e1n\u00ed<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Zinek je mimo\u0159\u00e1dn\u011b \u00fa\u010dinnou prevenc\u00ed koroze jin\u00fdch kov\u016f. M\u00e1 ochrann\u00e9 vlastnosti, kter\u00e9 jsou d\u00e1ny jeho chemick\u00fdmi vlastnostmi a tak\u00e9 jeho pou\u017eit\u00edm jako n\u00e1t\u011bru.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Kdy\u017e se zinek nanese na ocel a \u017eelezo, vytvo\u0159\u00ed povlak, p\u0159es kter\u00fd nem\u016f\u017ee ke kovu proniknout kysl\u00edk a vlhkost. To zabra\u0148uje reziv\u011bn\u00ed kovu. Zinek st\u00e1le poskytuje katodickou ochranu kovu i v p\u0159\u00edpad\u011b, \u017ee je povrch po\u0161kr\u00e1ban\u00fd. To znamen\u00e1, \u017ee koroze zinku prob\u00edh\u00e1 jako prvn\u00ed a slou\u017e\u00ed jako ob\u011b\u0165 za \u00fa\u010delem ochrany z\u00e1kladn\u00edho kovu.<\/span><\/p>\n<p><span style=\"font-weight: 400\">To je d\u016fvod, pro\u010d pozinkovan\u00fd kov nerezav\u00ed tolik. Zinkov\u00e1 vrstva m\u00e1 dlouhou \u017eivotnost a chr\u00e1n\u00ed v extr\u00e9mn\u00edch prost\u0159ed\u00edch, jako je d\u00e9\u0161\u0165, vlhkost nebo s\u016fl. \u010casem zinek z\u00edsk\u00e1 n\u00edzkou vrstvu oxidu zine\u010dnat\u00e9ho nebo uhli\u010ditanu zine\u010dnat\u00e9ho, kter\u00e1 je \u0161edob\u00edl\u00e1. Tento povlak rovn\u011b\u017e odol\u00e1v\u00e1 korozi.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Zinek je ide\u00e1ln\u00edm materi\u00e1lem pro ochranu kov\u016f, proto je vhodn\u00fd pro stavebnictv\u00ed, instalat\u00e9rstv\u00ed, automobilov\u00fd pr\u016fmysl a pr\u016fmyslov\u00e1 za\u0159\u00edzen\u00ed. B\u011b\u017en\u011b se pou\u017e\u00edv\u00e1 ve st\u0159e\u0161n\u00edch krytin\u00e1ch, plotech, vodovodn\u00edch trubk\u00e1ch, automobilov\u00fdch vozidlech a dokonce i v dom\u00e1c\u00edm \u017eelez\u00e1\u0159stv\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400\">D\u00edky zinku budou in\u017een\u00fd\u0159i a konstrukt\u00e9\u0159i schopni zajistit odolnost kov\u016f, jejich reziv\u011bn\u00ed a zachov\u00e1n\u00ed struktur\u00e1ln\u00ed integrity. P\u0159i spr\u00e1vn\u00e9m pochopen\u00ed zinkov\u00e9 rzi pom\u00e1h\u00e1 jednotlivc\u016fm p\u0159i spr\u00e1vn\u00e9m v\u00fdb\u011bru materi\u00e1l\u016f s povrchovou \u00fapravou zinkem.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_Does_Zinc_Corrode_A_Look_at_the_Chemistry\"><\/span><b>Pro\u010d zinek koroduje? Pohled na chemii<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Zinc_Does_Not_Rust_Like_Iron\"><\/span><b>Zinek nerezav\u00ed jako \u017eelezo<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinek netvo\u0159\u00ed \u010dervenohn\u011bdou rez, kter\u00e1 se tvo\u0159\u00ed na \u017eeleze nebo oceli. Oxid \u017eelezit\u00fd je rez a zinek \u017eelezo neobsahuje. Zinek sp\u00ed\u0161e podl\u00e9h\u00e1 alternativn\u00ed form\u011b koroze, kter\u00e1 je pomalej\u0161\u00ed a velmi ochrann\u00e1.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Formation_of_Zinc_Oxide\"><\/span><b>Tvorba oxidu zine\u010dnat\u00e9ho<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">P\u0159i styku se vzduchem se zinek slu\u010duje s kysl\u00edkem. P\u0159i reakci vznik\u00e1 tenk\u00fd povlak \u0161edob\u00edl\u00e9 barvy, kter\u00fd se naz\u00fdv\u00e1 oxid zine\u010dnat\u00fd. Tento povlak ulp\u00edv\u00e1 na povrchu a zaji\u0161\u0165uje pokryt\u00ed kovov\u00e9ho materi\u00e1lu. P\u0159edstavuje ochrannou barik\u00e1du a nedovoluje ztr\u00e1ty.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Reaction_With_Moisture\"><\/span><b>Reakce s vlhkost\u00ed<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinek m\u016f\u017ee tak\u00e9 d\u00e1le reagovat s vlhkost\u00ed nebo vodou. M\u016f\u017ee vzniknout hydroxid zine\u010dnat\u00fd. K tomu doch\u00e1z\u00ed \u010dast\u011bji na mokr\u00fdch, vlhk\u00fdch nebo de\u0161tiv\u00fdch m\u00edstech. P\u0159esto\u017ee se jedn\u00e1 o formu koroze, m\u00e1 ur\u010ditou odolnost.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Protective_Zinc_Carbonate_Layer\"><\/span><b>Ochrann\u00e1 vrstva uhli\u010ditanu zine\u010dnat\u00e9ho.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">V oblastech se zne\u010di\u0161t\u011bn\u00fdm nebo slan\u00fdm vzduchem se zinek m\u016f\u017ee p\u0159em\u011bnit na uhli\u010ditan zine\u010dnat\u00fd. Ten je z\u00e1rove\u0148 ochrannou vrstvou, kter\u00e1 na kovu vytv\u00e1\u0159\u00ed stabiln\u00ed povlak. Pom\u00e1h\u00e1 sni\u017eovat budouc\u00ed korozi a prodlu\u017euje \u017eivotnost zinku a pozinkovan\u00fdch kov\u016f.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Environmental_Conditions_that_Enhance_Corrosion\"><\/span><b>Podm\u00ednky prost\u0159ed\u00ed, kter\u00e9 zvy\u0161uj\u00ed korozi.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinek se za nep\u0159\u00edzniv\u00fdch podm\u00ednek rozkl\u00e1d\u00e1. Rychlost koroze zhor\u0161uj\u00ed kysel\u00e9 de\u0161t\u011b, slan\u00fd vzduch na pob\u0159e\u017e\u00ed, pr\u016fmyslov\u00e9 zne\u010di\u0161t\u011bn\u00ed, vysok\u00e9 teploty a vlhkost za v\u0161ech okolnost\u00ed. Zinkov\u00e9 povrchy mohou m\u00edt po\u0161kozen\u00fd nebo po\u0161kr\u00e1ban\u00fd povrch, co\u017e vystavuje m\u00edsta rychl\u00e9mu opot\u0159eben\u00ed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Protective_and_Controlled_Corrosion\"><\/span><b>Ochrann\u00e1 a \u0159\u00edzen\u00e1 koroze.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Koroze zinku je sice ochrann\u00e1, ale je \u0159\u00edzen\u00e1. Zinek netvo\u0159\u00ed slab\u00e9 vrstvy, kter\u00e9 by mohly snadno proniknout kovem pod n\u00edm, proto\u017ee tvo\u0159\u00ed ochrann\u00e9 vrstvy. Proto si \u010dlov\u011bk m\u016f\u017ee st\u00e1le kl\u00e1st ot\u00e1zky, jako nap\u0159: Je zinek rezav\u00fd, a to je dobr\u00e1 zpr\u00e1va. Zinek je odoln\u00fd a st\u00e1le poskytuje ochrann\u00fd \u00fa\u010dinek ostatn\u00edm kov\u016fm.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"About_Us_%E2%80%93_GC_Precision_Mould\"><\/span><b>O n\u00e1s - GC Precision Mould<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/10-2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-20533 size-full\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/10-2.jpg\" alt=\"Rezav\u011bn\u00ed zinku\" width=\"736\" height=\"414\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/10-2.jpg 736w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2026\/01\/10-2-480x270.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 736px, 100vw\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400\">GC Precision Mould je renomovan\u00e1 spole\u010dnost v oblasti tlakov\u00e9ho lit\u00ed a p\u0159esn\u00e9ho lisov\u00e1n\u00ed v \u010c\u00edn\u011b. Zam\u011b\u0159ujeme se na kvalitu. Zam\u011b\u0159ujeme se na p\u0159esnost. Soust\u0159ed\u00edme se na konzistentn\u00ed v\u00fdsledky pro v\u0161echny z\u00e1kazn\u00edky. M\u00e1me vysoce zku\u0161en\u00fd a technologick\u00fd t\u00fdm. Na\u0161i z\u00e1kazn\u00edci jsou po cel\u00e9m sv\u011bt\u011b a p\u016fsob\u00ed v automobilov\u00e9m, elektronick\u00e9m, pr\u016fmyslov\u00e9m a spot\u0159ebn\u00edm pr\u016fmyslu. N\u00e1\u0161 c\u00edl je jednoduch\u00fd. Poskytovat vysoce kvalitn\u00ed v\u00fdlisky a bezchybn\u00e9 odl\u00e9van\u00e9 komponenty. Na\u0161im z\u00e1kazn\u00edk\u016fm poskytujeme rychl\u00fd servis, profesion\u00e1ln\u00ed in\u017een\u00fdrstv\u00ed a st\u00e1lou v\u00fdrobu. Spole\u010dnost GC Precision Mould by se r\u00e1da stala jedn\u00edm z nejlep\u0161\u00edch a spolehliv\u00fdch v\u00fdrobn\u00edch partner\u016f v \u010c\u00edn\u011b.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"The_Reason_to_Select_GC_Precision_Mould\"><\/span><b>D\u016fvod, pro\u010d zvolit formu GC Precision Mould<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"Chinas_Best_Provider\"><\/span><b>Nejlep\u0161\u00ed poskytovatel v \u010c\u00edn\u011b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400\">Jsme zn\u00e1m\u00ed jako jeden z p\u0159edn\u00edch poskytovatel\u016f \u0159e\u0161en\u00ed v oblasti forem a tlakov\u00e9ho lit\u00ed v \u010c\u00edn\u011b. Vyzna\u010dujeme se kvalitou, p\u0159esnost\u00ed a slu\u017ebami.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"High_Precision_Quality\"><\/span><b>Vysok\u00e1 kvalita p\u0159esnosti<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400\">Vyu\u017e\u00edv\u00e1me modern\u00ed vybaven\u00ed a kontrolu kvality. V\u0161echny d\u00edly jsou mezin\u00e1rodn\u00ed.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"Strong_Engineering_Support\"><\/span><b>Siln\u00e1 technick\u00e1 podpora<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400\">N\u00e1\u0161 t\u00fdm je vy\u0161kolen v navrhov\u00e1n\u00ed, v\u00fdvoji a optimalizaci v\u00fdrobn\u00edch proces\u016f. Pom\u016f\u017eeme v\u00e1m sn\u00ed\u017eit n\u00e1klady nebo v\u00fdkonnost.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"On-Time_and_Dependable_Services\"><\/span><b>V\u010dasn\u00e9 a spolehliv\u00e9 slu\u017eby<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400\">Ch\u00e1peme, \u017ee na \u010dase z\u00e1le\u017e\u00ed. D\u00edky na\u0161emu v\u00fdrobn\u00edmu syst\u00e9mu jsme schopni dod\u00e1vat rychle a z\u00e1rove\u0148 kvalitn\u011b.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"Customer_First_Service\"><\/span><b>Slu\u017eby z\u00e1kazn\u00edk\u016fm na prvn\u00edm m\u00edst\u011b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400\">Podporujeme v\u00e1s na ka\u017ed\u00e9m kroku. \u00dazce s v\u00e1mi spolupracujeme: od konceptu a\u017e po s\u00e9riovou v\u00fdrobu.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Global_Experience\"><\/span><b>Glob\u00e1ln\u00ed zku\u0161enosti<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Jsme hrd\u00ed na to, \u017ee m\u00e1me z\u00e1kazn\u00edky po cel\u00e9m sv\u011bt\u011b. GC Precision Mould m\u00e1 mnoho mezin\u00e1rodn\u00edch z\u00e1kazn\u00edk\u016f.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span><b>Z\u00e1v\u011br<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400\">Zinek je siln\u00fd a zdrav\u00fd kov. Nerezav\u00ed jako \u017eelezo. Naopak, vytv\u00e1\u0159\u00ed ochrann\u00fd povlak, kter\u00fd zpomaluje korozi. D\u00edky tomu se zinek hod\u00ed ve stavebnictv\u00ed, v automobilov\u00e9m pr\u016fmyslu a p\u0159edev\u0161\u00edm v pr\u016fmyslov\u00fdch aplikac\u00edch. Dlouhodobou ochranu poskytuj\u00ed tak\u00e9 slitiny zinku a pozinkovan\u00e9 kovy. P\u0159esto je zinek dlouhodob\u011b n\u00e1chyln\u00fd na nep\u0159\u00edzniv\u00e9 podm\u00ednky, jako je vlhkost, s\u016fl a zne\u010di\u0161t\u011bn\u00ed. Zinkov\u00e9 materi\u00e1ly maj\u00ed p\u0159i vhodn\u00e9 p\u00e9\u010di a \u00fadr\u017eb\u011b potenci\u00e1l vydr\u017eet mnoho let. Znalost mechanismu p\u016fsoben\u00ed zinku pom\u00e1h\u00e1 jednotlivc\u016fm p\u0159i informovan\u00e9m rozhodov\u00e1n\u00ed. Funguje tak\u00e9 p\u0159i konzervaci kovov\u00fdch konstrukc\u00ed a v\u00fdrobk\u016f. Zinek je st\u00e1le jedn\u00edm z nejvhodn\u011bj\u0161\u00edch materi\u00e1l\u016f z hlediska trvanlivosti a odolnosti proti korozi.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_about_Zinc_and_Zinc_Corrosion\"><\/span><b>\u010casto kladen\u00e9 ot\u00e1zky o zinku a zinkov\u00e9 korozi.<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Does_zinc_rust\"><\/span><b>Rezav\u00ed zinek?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Ne, zinek nerezav\u00ed stejn\u011b jako \u017eelezo. Vytv\u00e1\u0159\u00ed izola\u010dn\u00ed vrstvu zn\u00e1mou jako oxid zine\u010dnat\u00fd, kter\u00e1 pom\u00e1h\u00e1 br\u00e1nit dal\u0161\u00ed korozi.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_zinc_metal_rust\"><\/span><b>Rezav\u00ed zinkov\u00fd kov?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinkov\u00fd kov je velmi odoln\u00fd proti korozi. Ve \u0161patn\u00fdch podm\u00ednk\u00e1ch m\u016f\u017ee postupn\u011b reziv\u011bt, ale klasicky nerezav\u00ed.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_zinc_alloy_rust\"><\/span><b>Koroduje zinkov\u00e1 slitina?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">V\u011bt\u0161ina zinkov\u00fdch slitin odol\u00e1v\u00e1 korozi. Ostatn\u00ed typy slitin mohou ve slan\u00e9m nebo kysel\u00e9m prost\u0159ed\u00ed m\u00edrn\u011b korodovat, ale dlouhodob\u011b je lze pou\u017e\u00edvat.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_zinc-plated_metal_rust\"><\/span><b>Rezav\u00ed pozinkovan\u00fd kov?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Zinkov\u00fd povlak slou\u017e\u00ed jako ochrana pozinkovan\u00fdch kov\u016f. V p\u0159\u00edpad\u011b po\u0161kr\u00e1b\u00e1n\u00ed povlaku existuje mo\u017enost, \u017ee dojde ke korozi podkladov\u00e9ho kovu.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_can_I_do_to_ensure_zinc_does_not_corrode\"><\/span><b>Co mohu ud\u011blat pro to, aby zinek nekorodoval?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400\">Pravideln\u00e9 \u010di\u0161t\u011bn\u00ed, pou\u017e\u00edv\u00e1n\u00ed nen\u00e1ro\u010dn\u00fdch chemik\u00e1li\u00ed, oprava \u0161kr\u00e1banc\u016f a vystaven\u00ed soli nebo zne\u010di\u0161\u0165uj\u00edc\u00edm l\u00e1tk\u00e1m m\u016f\u017ee prodlou\u017eit \u017eivotnost zinku.<\/span><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Zinc is a commonly used metal in construction, automobile and domestic projects. The questions many people will ask are: Does zinc rust? It is important to know the behaviour of zinc in different environments. This paper describes the characteristics of zinc, its reaction with air and water, as well as outlining the differences between zinc [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":20539,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[62],"tags":[1210,1220,1216,1214,1211,1221,1212,1218,1213,1222,1219,1215,1217],"class_list":["post-20543","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zinc-die-casting","tag-does-zinc-alloy-rust","tag-does-zinc-alloy-rust-easily","tag-does-zinc-corrode-easily","tag-does-zinc-corrode-in-saltwater","tag-does-zinc-corrode-in-water","tag-does-zinc-rust-easily","tag-does-zinc-rust-faster-than-stainless-steel","tag-does-zinc-rust-on-metal","tag-does-zinc-rust-or-corrode","tag-does-zinc-tarnish","tag-how-fast-does-zinc-rust","tag-zinc-corrosion-reaction","tag-zinc-rust-protection"],"_links":{"self":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/20543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/comments?post=20543"}],"version-history":[{"count":1,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/20543\/revisions"}],"predecessor-version":[{"id":20544,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/20543\/revisions\/20544"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/media\/20539"}],"wp:attachment":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/media?parent=20543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/categories?post=20543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/tags?post=20543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}