{"id":18283,"date":"2025-03-31T21:19:58","date_gmt":"2025-03-31T21:19:58","guid":{"rendered":"https:\/\/aludiecasting.com\/?p=18283"},"modified":"2025-03-31T21:19:58","modified_gmt":"2025-03-31T21:19:58","slug":"vyhody-polotuheho-tlakoveho-liti-ssdc","status":"publish","type":"post","link":"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/","title":{"rendered":"Polotuh\u00e9 tlakov\u00e9 lit\u00ed (SSDC): V\u00fdhody a aplikace"},"content":{"rendered":"<p>Polotuh\u00e9 tlakov\u00e9 lit\u00ed (SSDC) zahrnuje vst\u0159ikov\u00e1n\u00ed kovov\u00e9 suspenze (pevn\u00e1 l\u00e1tka 20-60%) p\u0159i teplot\u011b 580-620 \u00b0C pod tlakem 50-100 MPa. T\u00edm se vytvo\u0159\u00ed kulovit\u00e1 mikrostruktura, kter\u00e1 zvy\u0161uje pevnost a\u017e o 20%. Smykov\u00e9 rychlosti jsou obvykle ni\u017e\u0161\u00ed ne\u017e 10 s-\u00b9, co\u017e zaji\u0161\u0165uje kontrolovan\u00e9 pln\u011bn\u00ed forem pro p\u0159esn\u00e9 d\u00edly. Mezi b\u011b\u017en\u00e9 slitiny pat\u0159\u00ed hlin\u00edk A356 a ho\u0159\u010d\u00edk AZ91D.<\/p>\n<p>Zjist\u011bte, pro\u010d se pro z\u00edsk\u00e1n\u00ed p\u0159esn\u00fdch v\u00fdsledk\u016f up\u0159ednost\u0148uje SSDC. Zjist\u011bte, jak funguje a jak\u00e9 jsou jeho kl\u00ed\u010dov\u00e9 metody, aplikace a v\u00fdhody.<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#What_is_Semi-Solid_Die_Casting\" >Co je polotuh\u00e9 tlakov\u00e9 lit\u00ed?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#_Thixotropy_and_Rheopexy\" >\u00a0Tixotropie a reopexe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#1_Rheocasting_Thixotropic_Behavior\" >1.   Reolitick\u00e9 odl\u00e9v\u00e1n\u00ed (tixotropn\u00ed chov\u00e1n\u00ed)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#2_Thixocasting_Rheopectic_Behavior\" >2.   Tixocasting (reopektick\u00e9 chov\u00e1n\u00ed)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#How_does_Shear_Rate_Controls_Flow\" >Jak smykov\u00e1 rychlost \u0159\u00edd\u00ed pr\u016ftok?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Solid_Fraction\" >Pevn\u00e1 frakce<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Microstructure_Evolution\" >V\u00fdvoj mikrostruktury<\/a><\/li><\/ul><\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Semi-Solid_Die_Casting_Process\" >Proces polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Slurry_Generation_Methods\" >Metody generov\u00e1n\u00ed kal\u016f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#1_Strain-Induced_Melt_Activation_SIMA\" >1.   Aktivace taveniny vyvolan\u00e1 tahem (SIMA):<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#2_Magnetohydrodynamic_MHD_Stirring\" >2.   Magnetohydrodynamick\u00e9 (MHD) m\u00edch\u00e1n\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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#3_Cooling_Slope_Casting\" >3.   Odl\u00e9v\u00e1n\u00ed chladic\u00edho svahu<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Injection_Unit_Modifications\" >\u00dapravy vst\u0159ikovac\u00ed jednotky<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Die_Design_Considerations\" >\u00davahy o konstrukci matrice<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Advantages_of_Semi-Solid_Die_Casting\" >V\u00fdhody polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Smoother_Surfaces_and_Precise_Sizes\" >Hlad\u0161\u00ed povrchy a p\u0159esn\u00e9 rozm\u011bry<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Stronger_Metal_Structure\" >Pevn\u011bj\u0161\u00ed kovov\u00e1 konstrukce<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Fewer_Holes_and_Defects\" >M\u00e9n\u011b d\u011br a defekt\u016f<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Energy_Savings\" >\u00daspory energie<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Lower_Production_Costs\" >Ni\u017e\u0161\u00ed v\u00fdrobn\u00ed n\u00e1klady<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Applications_of_Semi-Solid_Die_Casting\" >Aplikace polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Critical_Automotive_Components\" >Kritick\u00e9 automobilov\u00e9 komponenty<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#High-Performance_Aerospace_Parts\" >Vysoce v\u00fdkonn\u00e9 leteck\u00e9 d\u00edly<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Measured_Performance_Gains\" >M\u011b\u0159en\u00e9 zv\u00fd\u0161en\u00ed v\u00fdkonu<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Growing_Market_Applications\" >Rostouc\u00ed tr\u017en\u00ed aplikace<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Materials_Used_in_Semi-Solid_Die_Casting\" >Materi\u00e1ly pou\u017e\u00edvan\u00e9 p\u0159i polotuh\u00e9m tlakov\u00e9m lit\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Specific_Alloy_Designations\" >Specifick\u00e1 ozna\u010den\u00ed slitin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Rheological_Properties\" >Reologick\u00e9 vlastnosti<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Solidification_Behavior\" >Chov\u00e1n\u00ed p\u0159i tuhnut\u00ed<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Secondary_Processing\" >Sekund\u00e1rn\u00ed zpracov\u00e1n\u00ed<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Semi-solid_die_Casting_vs_Traditional_Die_Casting\" >Polotuh\u00e9 lit\u00ed vs. tradi\u010dn\u00ed tlakov\u00e9 lit\u00ed<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Process_Parameter_Comparison\" >Srovn\u00e1n\u00ed parametr\u016f procesu<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Material_Structure\" >Struktura materi\u00e1lu<\/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\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Cost_Factors\" >N\u00e1kladov\u00e9 faktory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#When_to_Choose\" >Kdy si vybrat<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/aludiecasting.com\/cs\/vyhody-polotuheho-tlakoveho-liti-ssdc\/#Conclusion\" >Z\u00e1v\u011br:<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Semi-Solid_Die_Casting\"><\/span>Co je polotuh\u00e9 tlakov\u00e9 lit\u00ed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18284 size-large\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1024x1024.jpg\" alt=\"Sch\u00e9ma polotuh\u00e9ho lit\u00ed pod tlakem\" width=\"1024\" height=\"1024\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1024x1024.jpg 1024w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-980x980.jpg 980w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-480x480.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/p>\n<p>Polotuh\u00e9 <a href=\"https:\/\/aludiecasting.com\/cs\/tlakove-liti-hliniku-6064\/\">tlakov\u00e9 lit\u00ed<\/a> je v\u00fdrobn\u00ed proces. Pou\u017e\u00edv\u00e1 se k formov\u00e1n\u00ed kovu do polotuh\u00e9ho stavu. Tyto d\u00edly maj\u00ed podobu t\u011bsta, kter\u00e9 rovnom\u011brn\u011b obsahuje jak kapaln\u00e9, tak pevn\u00e9 tvary. Tento druh ka\u0161e pom\u00e1h\u00e1 v\u00fdrobci vyr\u00e1b\u011bt slo\u017eit\u00e9 d\u00edly \u0161pi\u010dkov\u00e9 kvality. Je \u0161iroce pou\u017e\u00edv\u00e1n v pr\u016fmyslov\u00fdch odv\u011btv\u00edch, a\u0165 u\u017e jde o automobilov\u00fd pr\u016fmysl nebo spot\u0159ebn\u00ed elektroniku. D\u00edly SSDC jsou pevn\u011bj\u0161\u00ed a maj\u00ed t\u00e9m\u011b\u0159 nulov\u00e9 vady ve srovn\u00e1n\u00ed s tradi\u010dn\u00edm odl\u00e9v\u00e1n\u00edm.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"_Thixotropy_and_Rheopexy\"><\/span>\u00a0Tixotropie a reopexe<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"1_Rheocasting_Thixotropic_Behavior\"><\/span>1.   Reolitick\u00e9 odl\u00e9v\u00e1n\u00ed (tixotropn\u00ed chov\u00e1n\u00ed)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Proces reolastingu se zahajuje pot\u00e9, co je k dispozici standardn\u00ed kovov\u00fd ingot. T\u00edm m\u016f\u017ee b\u00fdt slitina hlin\u00edku A356. Obr\u00e1b\u011b\u010di kov\u016f tyto ingoty roztav\u00ed p\u0159i po\u010d\u00e1te\u010dn\u00ed teplot\u011b 650 \u00b0C v peci.<\/p>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/rheocasting.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18285 size-large\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/rheocasting-1024x1024.jpg\" alt=\"Sch\u00e9ma reocastingu\" width=\"1024\" height=\"1024\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/rheocasting-1024x1024.jpg 1024w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/rheocasting-980x980.jpg 980w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/rheocasting-480x480.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/p>\n<p>Kdy\u017e se roztaven\u00fd materi\u00e1l za\u010dne ochlazovat na polotuhou teplotu 580 \u00b0C, pracovn\u00edci pou\u017eij\u00ed mechanick\u00e9 m\u00edchadlo, kter\u00e9 se ot\u00e1\u010d\u00ed rychlost\u00ed 500 ot\u00e1\u010dek za minutu. T\u00edm se pevn\u00e9 \u010d\u00e1stice rozpadaj\u00ed na mal\u00e9 kuli\u010dky. Jejich velikost je 50-100 mikron\u016f.<\/p>\n<p>M\u00edch\u00e1n\u00ed zp\u016fsobuje tixotropn\u00ed chov\u00e1n\u00ed. To je odl\u00e9v\u00e1n\u00ed v polotuh\u00e9m stavu s pevn\u00fdmi \u010d\u00e1sticemi 40%. P\u0159i tla\u010den\u00ed te\u010de velmi hladce.<\/p>\n<p>Tato suspenze se pozd\u011bji pou\u017e\u00edv\u00e1 k odl\u00e9v\u00e1n\u00ed univerz\u00e1ln\u00edch pr\u016fmyslov\u00fdch komponent\u016f, jako jsou sou\u010d\u00e1sti zav\u011b\u0161en\u00ed automobil\u016f.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Thixocasting_Rheopectic_Behavior\"><\/span>2.   Tixocasting (reopektick\u00e9 chov\u00e1n\u00ed)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>P\u0159i tixocastingu pou\u017e\u00edvaj\u00ed v\u00fdrobci p\u0159edp\u0159ipraven\u00e9 polotovary. Jedn\u00e1 se o slitiny, jako je ho\u0159\u010d\u00edk AZ91D. Obvykle je v tomto materi\u00e1lu ji\u017e spr\u00e1vn\u00e1 kulovit\u00e1 mikrostruktura.<\/p>\n<p>Tyto polotovary poprv\u00e9 spat\u0159ili kovod\u011bln\u00edci. Jejich d\u00e9lka se v mnoha p\u0159\u00edpadech li\u0161\u00ed, ale obvykle se pohybuje od 150 mm. Tyto p\u0159edvalky p\u0159etavili p\u0159i teplot\u011b 575 \u00b0C. To odpov\u00edd\u00e1 standardn\u00edmu odl\u00e9v\u00e1n\u00ed thixocastingem. Proces trv\u00e1 15 minut v induk\u010dn\u00ed peci, dokud materi\u00e1l nez\u00edsk\u00e1 ide\u00e1ln\u00ed polotuhou formu.<\/p>\n<p>V\u00fdrobci tla\u010d\u00ed tento materi\u00e1l do formy rychlost\u00ed 1 m\/s. T\u00edm se zna\u010dn\u011b li\u0161\u00ed od tixotropn\u00edho, proto\u017ee nen\u00ed ten\u010d\u00ed. M\u00edsto toho se jedn\u00e1 o druh reopexe.<\/p>\n<p>Tento proces zvy\u0161uje viskozitu ve smyku (10%). V\u00fdsledkem je n\u00edzk\u00e9 riziko turbulentn\u00edho proud\u011bn\u00ed a zachycen\u00ed vzduchu. P\u0159i odl\u00e9v\u00e1n\u00ed sou\u010d\u00e1st\u00ed, jako jsou pouzdra notebook\u016f, vytv\u00e1\u0159ej\u00ed tyto vlastnosti hlad\u0161\u00ed povrchy.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_does_Shear_Rate_Controls_Flow\"><\/span>Jak smykov\u00e1 rychlost \u0159\u00edd\u00ed pr\u016ftok?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Polotuh\u00e9 kovy maj\u00ed <a href=\"https:\/\/link.springer.com\/article\/10.1007\/s00397-008-0268-1\" target=\"_blank\" rel=\"noopener\">smykov\u00e9 rychlosti<\/a> pod typick\u00fdm rozsahem 10 s-\u00b9. Proto\u017ee je v hust\u00e9m stavu, pohybuje se do dutiny formy pomalu a \u0159\u00e1dn\u011b vypl\u0148uje ka\u017edou \u010d\u00e1st, zejm\u00e9na v p\u0159\u00edpad\u011b pot\u0159eby tenk\u00e9ho odlitku.<\/p>\n<p>St\u0159ih se zvy\u0161uje, kdy\u017e \u00fazk\u00e9 br\u00e1ny tla\u010d\u00ed kov vysokou rychlost\u00ed. Forma se napln\u00ed b\u011bhem 0,5 sekundy, \u010d\u00edm\u017e se vyrob\u00ed p\u0159esn\u00e9 v\u00fdrobky.<\/p>\n<p>Parametrem je smykov\u00e9 zten\u010den\u00ed. To umo\u017e\u0148uje pracovn\u00edk\u016fm \u0159e\u0161it tok kovu v r\u016fzn\u00fdch f\u00e1z\u00edch odl\u00e9v\u00e1n\u00ed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Solid_Fraction\"><\/span>Pevn\u00e1 frakce<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pevn\u00e1 frakce (f\u209b) je pod\u00edl pevn\u00e9ho obsahu v SSDC. Ten v\u00fdrobci udr\u017euj\u00ed v provediteln\u00e9m rozmez\u00ed 20% a 60%.<\/p>\n<p>Ni\u017e\u0161\u00ed podm\u00ednky pod 20% zp\u016fsobuj\u00ed, \u017ee kov je tekut\u00fd, a p\u0159\u00edli\u0161 vysok\u00e9, vy\u0161\u0161\u00ed ne\u017e 60%, maj\u00ed za n\u00e1sledek tvrd\u0161\u00ed formu. To zp\u016fsobuje pot\u00ed\u017ee ve form\u011b.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Microstructure_Evolution\"><\/span>V\u00fdvoj mikrostruktury<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/microstructure.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18286 size-large\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/microstructure-1024x1024.jpg\" alt=\"studium mikrostruktury polotuh\u00e9ho tlakov\u00e9ho lit\u00ed\" width=\"1024\" height=\"1024\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/microstructure-1024x1024.jpg 1024w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/microstructure-980x980.jpg 980w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/microstructure-480x480.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/p>\n<p>Oproti star\u00e9 dendritick\u00e9 struktu\u0159e m\u00e1 polotvrd\u00fd kov kulovitou nebo rozetovou mikrostrukturu. \u010c\u00e1stice maj\u00ed kulat\u00fd tvar, co\u017e umo\u017e\u0148uje hlad\u0161\u00ed tok a minimalizuje vady. Z\u00e1kladn\u00edmi v\u00fdsledky tohoto procesu v kone\u010dn\u00fdch v\u00fdstupech jsou lep\u0161\u00ed pevnost a jemn\u00e1 kvalita.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Semi-Solid_Die_Casting_Process\"><\/span>Proces polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18287 size-large\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1-1024x1024.jpg\" alt=\"proces polotuh\u00e9ho lit\u00ed pod tlakem\" width=\"1024\" height=\"1024\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1-1024x1024.jpg 1024w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1-980x980.jpg 980w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/semi-solid-die-casting-1-480x480.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Slurry_Generation_Methods\"><\/span>Metody generov\u00e1n\u00ed kal\u016f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"1_Strain-Induced_Melt_Activation_SIMA\"><\/span>1.   Aktivace taveniny vyvolan\u00e1 tahem (SIMA):<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Po zakoupen\u00ed standardn\u00edch sochor\u016f je v\u00fdrobci ced\u00ed p\u0159i teplot\u011b 300 \u00b0C. Pot\u00e9 je vkl\u00e1daj\u00ed do pec\u00ed k op\u011btovn\u00e9mu oh\u0159evu p\u0159i 580 \u00b0C. V t\u00e9to tekut\u00e9 matrici se vytvo\u0159\u00ed kulovit\u00e9 \u010d\u00e1stice (50 \u03bcm). To je dostate\u010dn\u011b dobr\u00e9 pro polotuh\u00e9 zpracov\u00e1n\u00ed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Magnetohydrodynamic_MHD_Stirring\"><\/span>2.   Magnetohydrodynamick\u00e9 (MHD) m\u00edch\u00e1n\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Elektromagnetick\u00e9 c\u00edvky pou\u017e\u00edvaj\u00ed proud 500 A. To je pr\u00e1ce pro m\u00edch\u00e1n\u00ed 600 ot\u00e1\u010dek za minutu bez kontaktu. T\u00edmto procesem vznik\u00e1 ide\u00e1ln\u00ed pevn\u00fd stav 40%, kter\u00fd zabra\u0148uje kontaminaci.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Cooling_Slope_Casting\"><\/span>3.   Odl\u00e9v\u00e1n\u00ed chladic\u00edho svahu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V\u00fdrobce st\u00e9k\u00e1 po svahu z roztaven\u00e9ho kovu o teplot\u011b 620 \u00b0C. To je obvykle m\u011bd\u011bn\u00fd svah s polohou 60\u00b0.<\/p>\n<p>Vyu\u017e\u00edvaj\u00ed rychlej\u0161\u00edho chlazen\u00ed, aby polotuh\u00e1 ka\u0161e vznikla za v\u00edce ne\u017e 3 sekundy.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Injection_Unit_Modifications\"><\/span>\u00dapravy vst\u0159ikovac\u00ed jednotky<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pou\u017eijte speci\u00e1ln\u00ed typ kr\u00e1tk\u00e9ho ruk\u00e1vu s keramick\u00fdm tepeln\u00fdm povlakem.<strong>. <\/strong>Udr\u017euj\u00ed teplotu suspenze na 570 \u00b0C. M\u016f\u017eete ji tak odl\u00e9vat bez obav po celou dobu vst\u0159ikov\u00e1n\u00ed.<\/p>\n<p>P\u0159esn\u011b konstruovan\u00e9 p\u00edsty nav\u00edc zaji\u0161\u0165uj\u00ed rovnom\u011brn\u00e9 napln\u011bn\u00ed formy. Pracuje s kritickou rychlost\u00ed 0,3-0,8 m\/s. Tato vlastnost vyrovn\u00e1v\u00e1 operace a omezuje \u0161kodliv\u00e9 odd\u011blov\u00e1n\u00ed f\u00e1z\u00ed. K t\u00e9 doch\u00e1z\u00ed mezi kapaln\u00fdmi a pevn\u00fdmi \u010d\u00e1sticemi suspenze.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Die_Design_Considerations\"><\/span>\u00davahy o konstrukci matrice<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T021043.842.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18289 size-full\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T021043.842.png\" alt=\"proces polotuh\u00e9ho lit\u00ed pod tlakem\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T021043.842.png 800w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T021043.842-480x300.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" \/><\/a><\/p>\n<p>V p\u0159\u00edpad\u011b vratov\u00fdch syst\u00e9m\u016f mus\u00edte pou\u017e\u00edt 30% v\u011bt\u0161\u00ed pr\u016f\u0159ez ne\u017e u b\u011b\u017en\u00fdch matric. To pom\u016f\u017ee udr\u017eet spr\u00e1vn\u00fd tok polotuh\u00fdch kov\u016f.<\/p>\n<p>U syst\u00e9m\u016f s b\u011b\u017eeck\u00fdmi p\u00e1sy za\u010dle\u0148te postupn\u00e9 zak\u0159iven\u00ed. To m\u00e1 minim\u00e1ln\u00ed polom\u011br 20 mm. T\u00edmto zp\u016fsobem techniky udr\u017e\u00ed lamin\u00e1rn\u00ed proud\u011bn\u00ed kovu a minimalizuj\u00ed turbulence.<\/p>\n<p>Pokud jde o v\u011btrac\u00ed otvory, jsou p\u0159esn\u011b opracov\u00e1ny na \u0161\u00ed\u0159ku 0,1 mm. Kontroluj\u00ed zachycov\u00e1n\u00ed vzduchu p\u0159i odl\u00e9v\u00e1n\u00ed. V nich se tak\u00e9 \u0159e\u0161\u00ed probl\u00e9my s net\u011bsnostmi.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Advantages_of_Semi-Solid_Die_Casting\"><\/span>V\u00fdhody polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Smoother_Surfaces_and_Precise_Sizes\"><\/span>Hlad\u0161\u00ed povrchy a p\u0159esn\u00e9 rozm\u011bry<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Polotuh\u00fd kov proud\u00ed do z\u00e1pustek \u0159\u00edzenou rychlost\u00ed. To je mnohem pomalej\u0161\u00ed ne\u017e u tekut\u00e9ho kovu. To tak\u00e9 sni\u017euje mno\u017estv\u00ed vzduchov\u00fdch bublin a\u017e o 90 %.<\/p>\n<p>V porovn\u00e1n\u00ed s b\u011b\u017en\u00fdm lit\u00edm se t\u00edmto procesem sni\u017euje smr\u0161t\u011bn\u00ed (0,5%), co\u017e je m\u00e9n\u011b ne\u017e 1,2% p\u0159i chlazen\u00ed. To tak\u00e9 pom\u00e1h\u00e1 p\u0159i v\u00fdrob\u011b d\u00edl\u016f, kter\u00e9 jsou <a href=\"https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/PhysRevLett.125.194301\" target=\"_blank\" rel=\"noopener\">snap-fit<\/a>.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Stronger_Metal_Structure\"><\/span>Pevn\u011bj\u0161\u00ed kovov\u00e1 konstrukce<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Mal\u00e9, kulat\u00e9, tvarovan\u00e9 \u010d\u00e1stice v polotuh\u00e9m stavu se na sebe dostate\u010dn\u011b t\u011bsn\u011b nabaluj\u00ed. To znamen\u00e1, \u017ee maj\u00ed hust\u0161\u00ed strukturu s 20% v\u011bt\u0161\u00ed pevnost\u00ed p\u0159i nata\u017een\u00ed.<\/p>\n<p>P\u0159ed zlomen\u00edm ji m\u016f\u017eete ohnout v\u011bt\u0161\u00ed silou 15%. Tyto d\u00edly vydr\u017e\u00ed 30% d\u00e9le p\u0159i v\u00fddr\u017ei opakovan\u00e9ho nam\u00e1h\u00e1n\u00ed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Fewer_Holes_and_Defects\"><\/span>M\u00e9n\u011b d\u011br a defekt\u016f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Uvnit\u0159 SSDC jsou t\u00e9m\u011b\u0159 nulov\u00e1 pr\u00e1zdn\u00e1 m\u00edsta (1 a\u017e 2 %). Zat\u00edmco u b\u011b\u017en\u00e9ho tlakov\u00e9ho lit\u00ed je \u0161ance 5 a\u017e 8 %.<\/p>\n<p>D\u00edky tomuto procesu se eliminuj\u00ed vzduchov\u00e9 bubliny, d\u00edry, smr\u0161\u0165ov\u00e1n\u00ed, praskliny a nerovnosti povrchu.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Energy_Savings\"><\/span>\u00daspory energie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Jist\u011b v\u00edte, \u017ee dal\u0161\u00ed vlastnost\u00ed nebo v\u00fdhodou tohoto procesu je \u00faspora energie. Sni\u017euje spot\u0159ebu energie mnoha zp\u016fsoby. Nap\u0159\u00edklad:<\/p>\n<ul>\n<li>Kov se zah\u0159\u00edv\u00e1 na 580 \u00b0C m\u00edsto 680 \u00b0C.<\/li>\n<li>Rychlej\u0161\u00ed toky (25%) spot\u0159ebov\u00e1vaj\u00ed m\u00e9n\u011b energie.<\/li>\n<li>B\u011bhem provozu sni\u017euje materi\u00e1lov\u00fd odpad a\u017e o 15 %.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Lower_Production_Costs\"><\/span>Ni\u017e\u0161\u00ed v\u00fdrobn\u00ed n\u00e1klady<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Proto\u017ee polotuh\u00e9 d\u00edly pot\u0159ebuj\u00ed m\u00e9n\u011b le\u0161t\u00edc\u00edch stroj\u016f, u\u0161et\u0159\u00ed se na nich a\u017e 40%.<\/p>\n<p>Z jejich v\u00fdrobn\u00ed produkce m\u016f\u017ee b\u00fdt vy\u0159azeno 5% d\u00edl\u016f. To je m\u00e9n\u011b ne\u017e 15 % t\u011bchto b\u011b\u017en\u00fdch proces\u016f.<\/p>\n<p>Formy SSDC m\u016f\u017eete pou\u017e\u00edt 50000kr\u00e1t m\u00edsto pouh\u00fdch 30000kr\u00e1t.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Applications_of_Semi-Solid_Die_Casting\"><\/span>Aplikace polotuh\u00e9ho tlakov\u00e9ho lit\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Critical_Automotive_Components\"><\/span>Kritick\u00e9 automobilov\u00e9 komponenty<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sou\u010d\u00e1sti polotuh\u00e9ho tlakov\u00e9ho lit\u00ed v automobilov\u00e9m pr\u016fmyslu jsou:<\/p>\n<ul>\n<li>Klouby \u0159\u00edzen\u00ed<\/li>\n<li>Uchycen\u00ed motoru<\/li>\n<li>P\u0159\u00edpady p\u0159evodovek<\/li>\n<li>Brzdov\u00e9 t\u0159meny<\/li>\n<\/ul>\n<p>T\u00edmto procesem vznikaj\u00ed velmi slo\u017eit\u00e9 d\u00edly s konstruk\u010dn\u00edmi detaily. Nap\u0159\u00edklad pomocn\u00e9 r\u00e1my a ramena zav\u011b\u0161en\u00ed s dut\u00fdmi konstrukcemi.<\/p>\n<p>U elektromobil\u016f se jedn\u00e1 o kryty bateri\u00ed a kryty motor\u016f. Jsou lehk\u00e9 a odoln\u00e9. Tak\u00e9 zvl\u00e1d\u00e1 neust\u00e1l\u00e9 vibrace a tepeln\u00e9 nam\u00e1h\u00e1n\u00ed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"High-Performance_Aerospace_Parts\"><\/span>Vysoce v\u00fdkonn\u00e9 leteck\u00e9 d\u00edly<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V polotuh\u00e9m stavu se vyr\u00e1b\u011bj\u00ed leteck\u00e9 sou\u010d\u00e1sti s p\u0159esnou kvalitou. Jedn\u00e1 se o:<\/p>\n<ul>\n<li>Dr\u017e\u00e1ky k\u0159\u00eddel<\/li>\n<li>Sou\u010d\u00e1sti podvozku<\/li>\n<li>D\u00edly turb\u00ednov\u00fdch motor\u016f<\/li>\n<li>Kryty radar\u016f<\/li>\n<li>Sk\u0159\u00edn\u011b pro leteckou elektroniku<\/li>\n<li>Satelit<\/li>\n<\/ul>\n<p>Jsou odoln\u00e9 a maj\u00ed ni\u017e\u0161\u00ed hmotnost. Pouzdro nav\u00e1d\u011bc\u00edho syst\u00e9mu st\u0159ely je vyu\u017e\u00edv\u00e1 pro sv\u00e9 schopnosti. Dodr\u017euj\u00ed p\u0159\u00edsn\u00e9 tolerance v\u016f\u010di kritick\u00fdm prost\u0159ed\u00edm.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Measured_Performance_Gains\"><\/span>M\u011b\u0159en\u00e9 zv\u00fd\u0161en\u00ed v\u00fdkonu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Podle provozn\u00edch test\u016f vydr\u017e\u00ed polotuh\u00e9 lit\u00e9 brzdov\u00e9 t\u0159meny p\u0159i pou\u017eit\u00ed star\u00e9 metody 80000 km, ne\u017e se opot\u0159ebuj\u00ed. Leteck\u00e9 odlitky nav\u00edc z\u00edsk\u00e1vaj\u00ed 25% v\u011bt\u0161\u00ed \u00fanavovou odolnost.<\/p>\n<p>D\u00edly v automobilov\u00e9m pr\u016fmyslu z\u00edsk\u00e1vaj\u00ed lep\u0161\u00ed odolnost proti n\u00e1razu (15%) p\u0159i crash testech.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Growing_Market_Applications\"><\/span>Rostouc\u00ed tr\u017en\u00ed aplikace<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Postupem \u010dasu rostouc\u00ed tr\u017en\u00ed aplikace vyu\u017e\u00edvaj\u00ed SSDC k vytv\u00e1\u0159en\u00ed:<\/p>\n<ul>\n<li>P\u0159esn\u00e1 pouzdra ant\u00e9n 5G s vlnovody o pr\u016fm\u011bru 0,05 mm.<\/li>\n<li>Z\u00e1sobn\u00edk na l\u00e9ka\u0159sk\u00e9 implant\u00e1ty s povrchem odoln\u00fdm proti bakteri\u00edm.<\/li>\n<li>Kryty motor\u016f dron\u016f s lep\u0161\u00edm odvodem tepla.<\/li>\n<\/ul>\n<p>Elektromobily nav\u00edc tento proces vyu\u017e\u00edvaj\u00ed, pokud jde o dosa\u017een\u00ed rovinnosti 0,2 mm. To je v rozmez\u00ed 300 mm u chladic\u00edch desek baterie.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Materials_Used_in_Semi-Solid_Die_Casting\"><\/span>Materi\u00e1ly pou\u017e\u00edvan\u00e9 p\u0159i polotuh\u00e9m tlakov\u00e9m lit\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Specific_Alloy_Designations\"><\/span>Specifick\u00e1 ozna\u010den\u00ed slitin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hlin\u00edk A356 (AlSi7Mg) a ho\u0159\u010d\u00edk AZ91D jsou slitiny, kter\u00e9 se nejl\u00e9pe hod\u00ed pro polotuh\u00e9 lit\u00ed. Tav\u00ed se rychleji a rovnom\u011brn\u011bji a vytv\u00e1\u0159ej\u00ed ide\u00e1ln\u00ed strukturu.<\/p>\n<p>Slitina A356 m\u00e1 vysokou pevnost, a proto ji automobilky obvykle pou\u017e\u00edvaj\u00ed 70%. Mezit\u00edm se slitina AZ91D dob\u0159e hod\u00ed k odl\u00e9v\u00e1n\u00ed lehk\u00fdch sk\u0159\u00edn\u00ed pro elektroniku.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Rheological_Properties\"><\/span>Reologick\u00e9 vlastnosti<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Grafy zn\u00e1zor\u0148uj\u00ed, jak slitiny SSDC pracuj\u00ed v r\u016fzn\u00fdch f\u00e1z\u00edch a s r\u016fzn\u00fdmi pevn\u00fdmi pod\u00edly (Fs). P\u0159i Fs=0,37. Je patrn\u00fd pokles viskozity p\u0159i zv\u00fd\u0161en\u00ed smykov\u00e9 rychlosti z 1 na 10 s-\u00b9.<\/p>\n<p>Frakce jako Fs=0,48, kter\u00e9 jsou vy\u0161\u0161\u00ed, udr\u017euj\u00ed proud\u011bn\u00ed hust\u0161\u00ed. Vyu\u017e\u00edvaj\u00ed v\u011bt\u0161\u00ed s\u00edly k napln\u011bn\u00ed matric. Tento graf ukazuje situaci, pro\u010d v\u00fdrobci pou\u017e\u00edvaj\u00ed Fs mezi 0,40 a 0,45, aby dos\u00e1hli nejlep\u0161\u00edho v\u00fdkonu.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Solidification_Behavior\"><\/span>Chov\u00e1n\u00ed p\u0159i tuhnut\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A356 odl\u00e9v\u00e1n\u00ed chladne v rozmez\u00ed 50 \u00b0C. Poskytuj\u00ed dostatek \u010dasu na rozprost\u0159en\u00ed kovu uvnit\u0159 formy.<\/p>\n<p>Chcete-li tento rozsah zv\u00fd\u0161it, m\u016f\u017eete p\u0159idat 0,3% ho\u0159\u010d\u00edku. To je pro zv\u00fd\u0161en\u00ed a\u017e na 15 \u00b0C pro lep\u0161\u00ed pr\u016ftok.<\/p>\n<p>Naopak slitina AZ91D nab\u00fdv\u00e1 rychleji zcela pevn\u00e9 formy. Vyr\u00e1b\u00ed v\u0161ak d\u00edly s pevn\u011bj\u0161\u00edmi a ten\u010d\u00edmi st\u011bnami. Jsou a\u017e o 2 mm siln\u011bj\u0161\u00ed.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Secondary_Processing\"><\/span>Sekund\u00e1rn\u00ed zpracov\u00e1n\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>D\u00edly \u010dasto pot\u0159ebuj\u00ed m\u00e9n\u011b krok\u016f sekund\u00e1rn\u00edho zpracov\u00e1n\u00ed. Je to proto, \u017ee je t\u0159eba odstranit 0,1 mm povrchu oproti 0,5 mm u b\u011b\u017en\u00fdch odlitk\u016f.<\/p>\n<p>Tepeln\u00e9 zpracov\u00e1n\u00ed slitiny A356 tak\u00e9 p\u0159in\u00e1\u0161\u00ed zv\u00fd\u0161en\u00ed pevnosti a\u017e na 20% bez deformac\u00ed.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Semi-solid_die_Casting_vs_Traditional_Die_Casting\"><\/span>Polotuh\u00e9 lit\u00ed vs. tradi\u010dn\u00ed tlakov\u00e9 lit\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T020712.282.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-18288 size-full\" src=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T020712.282.png\" alt=\"proces polotuh\u00e9ho tlakov\u00e9ho lit\u00ed\" width=\"800\" height=\"500\" title=\"\" srcset=\"https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T020712.282.png 800w, https:\/\/aludiecasting.com\/wp-content\/uploads\/2025\/03\/Add-a-heading-2025-04-01T020712.282-480x300.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Process_Parameter_Comparison\"><\/span>Srovn\u00e1n\u00ed parametr\u016f procesu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table width=\"602\">\n<tbody>\n<tr>\n<td width=\"201\">Parametr<\/td>\n<td width=\"201\">Polotuh\u00e9 lit\u00ed<\/td>\n<td width=\"201\">Tradi\u010dn\u00ed odl\u00e9v\u00e1n\u00ed<\/td>\n<\/tr>\n<tr>\n<td width=\"201\">Teplota<\/td>\n<td width=\"201\">580-620\u00b0C<\/td>\n<td width=\"201\">680-720\u00b0C<\/td>\n<\/tr>\n<tr>\n<td width=\"201\">Vst\u0159ikovac\u00ed tlak<\/td>\n<td width=\"201\">50-100 MPa<\/td>\n<td width=\"201\">70-150 MPa<\/td>\n<\/tr>\n<tr>\n<td width=\"201\">Pevn\u00e1 frakce<\/td>\n<td width=\"201\">30-50%<\/td>\n<td width=\"201\">0% (pln\u011b tekut\u00fd)<\/td>\n<\/tr>\n<tr>\n<td width=\"201\">Doba cyklu<\/td>\n<td width=\"201\">45-60 sekund<\/td>\n<td width=\"201\">30-40 sekund<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"Material_Structure\"><\/span>Struktura materi\u00e1lu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Kulovit\u00e1 struktura v polotuh\u00e9m odlitku poskytuje o 20 % vy\u0161\u0161\u00ed hou\u017eevnatost ne\u017e star\u00e1 struktura odlitku. Obsahuje p\u0159ibli\u017en\u011b 2 % p\u00f3rovitosti; naopak 5,8%.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cost_Factors\"><\/span>N\u00e1kladov\u00e9 faktory<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Po\u010d\u00e1te\u010dn\u00ed n\u00e1klady jsou v\u0161ak vy\u0161\u0161\u00ed a\u017e do 20%. Bez ohledu na to m\u016f\u017ee b\u00fdt n\u00e1kladov\u011b efektivn\u00ed, proto\u017ee sni\u017euje odpad materi\u00e1lu p\u0159ibli\u017en\u011b o 15% a n\u00e1klady na obr\u00e1b\u011bn\u00ed a\u017e o 40%. To kompenzuje po\u010d\u00e1te\u010dn\u00ed n\u00e1klady.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"When_to_Choose\"><\/span>Kdy si vybrat<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>V p\u0159\u00edpad\u011b pot\u0159eby zvolte polotuh\u00e9:<\/p>\n<p>P\u0159i v\u00fdrob\u011b zvolte polotuh\u00fd proces tlakov\u00e9ho lit\u00ed:<\/p>\n<ul>\n<li>Tenk\u00e9 st\u011bny (&lt;3 mm)<\/li>\n<li>Vysok\u00e1 pevnost (&gt;250 MPa)<\/li>\n<li>Objem &gt;20 000 jednotek\/rok<\/li>\n<li>Hladk\u00e9 povrchy (&lt;3,2 \u03bcm Ra)<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Z\u00e1v\u011br:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Polotuh\u00e9 tlakov\u00e9 lit\u00ed se vyr\u00e1b\u00ed s vy\u0161\u0161\u00ed kvalitou hou\u017eevnatosti. Dod\u00e1v\u00e1 tak\u00e9 vynikaj\u00edc\u00ed povrchovou \u00fapravu s minim\u00e1ln\u00ed p\u00f3rovitost\u00ed, kter\u00e1 je p\u0159ibli\u017en\u011b o 30% men\u0161\u00ed ne\u017e u b\u011b\u017en\u00e9ho procesu.<\/p>\n<p>A\u010dkoli tato technika vyu\u017e\u00edv\u00e1 specifick\u00e9 slitiny a n\u00e1kladn\u00e9 po\u010d\u00e1te\u010dn\u00ed nastaven\u00ed, st\u00e1v\u00e1 se n\u00e1kladov\u011b efektivn\u00ed pro v\u00fdrobu d\u00edl\u016f p\u0159esahuj\u00edc\u00edch 20000 kus\u016f.<\/p>\n<p>Nadch\u00e1zej\u00edc\u00ed trh se t\u011b\u0161\u00ed na roz\u0161\u00ed\u0159en\u00ed aplikac\u00ed SSDC v automobilov\u00e9m a leteck\u00e9m pr\u016fmyslu a v nov\u00fdch technologi\u00edch. Zam\u011b\u0159uje se tak\u00e9 na objevov\u00e1n\u00ed pokrok\u016f v oblasti \u0159\u00edzen\u00ed proces\u016f a n\u00e1stroj\u016f.<\/p>","protected":false},"excerpt":{"rendered":"<p>Objevte mo\u017enosti polotuh\u00e9ho tlakov\u00e9ho lit\u00ed (SSDC) pro vytv\u00e1\u0159en\u00ed slo\u017eit\u00fdch, pevn\u00fdch kovov\u00fdch sou\u010d\u00e1st\u00ed s minim\u00e1ln\u00edmi vadami a \u00fasporou energie. Seznamte se s reocastingem, thixocastingem a jejich pou\u017eit\u00edm.<\/p>","protected":false},"author":2,"featured_media":18290,"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":[81],"tags":[],"class_list":["post-18283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-die-casting-alloys"],"_links":{"self":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/18283","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=18283"}],"version-history":[{"count":0,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/posts\/18283\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/media\/18290"}],"wp:attachment":[{"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/media?parent=18283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/categories?post=18283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aludiecasting.com\/cs\/wp-json\/wp\/v2\/tags?post=18283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}