{"id":12999,"date":"2018-10-14T07:23:04","date_gmt":"2018-10-14T07:23:04","guid":{"rendered":"https:\/\/aludiecasting.com\/?p=12999"},"modified":"2019-09-20T12:34:05","modified_gmt":"2019-09-20T12:34:05","slug":"ligas-de-fundicao-sob-pressao","status":"publish","type":"post","link":"https:\/\/aludiecasting.com\/pt\/ligas-de-fundicao-sob-pressao\/","title":{"rendered":"Ligas de fundi\u00e7\u00e3o sob press\u00e3o"},"content":{"rendered":"

Ligas de fundi\u00e7\u00e3o sob press\u00e3o<\/h1>\n

Ligas de fundi\u00e7\u00e3o sob press\u00e3o<\/strong><\/em><\/a> s\u00e3o normalmente n\u00e3o ferrosos, e h\u00e1 um grande n\u00famero dispon\u00edvel com uma ampla gama de propriedades f\u00edsicas e mec\u00e2nicas que abrangem quase todas as aplica\u00e7\u00f5es conceb\u00edveis que um projetista possa precisar.<\/span><\/small><\/p>\n

As ligas de alum\u00ednio e zinco s\u00e3o as mais usadas, seguidas por magn\u00e9sio, ligas de zinco-alum\u00ednio (AZ), cobre, estanho e chumbo.<\/span><\/small><\/p>\n

As ligas \u00e0 base de zinco, chumbo e estanho s\u00e3o classificadas como metais de baixo ponto de fus\u00e3o, todos fundindo a menos de 725o<\/sup>F (385o<\/sup>C). As ligas de zinco-alum\u00ednio (ZA) t\u00eam uma faixa de fus\u00e3o um pouco mais alta, de 800o<\/sup>F a 900o<\/sup>F (426o<\/sup>C a 482o<\/sup>C). As ligas de alum\u00ednio e magn\u00e9sio s\u00e3o consideradas ligas de ponto de fus\u00e3o moderado, sendo fundidas na faixa de 1150o<\/sup>F a 1300o<\/sup>F (621o<\/sup>C a 704o<\/sup>C). As ligas de cobre s\u00e3o consideradas de alto ponto de fus\u00e3o, acima de 1650o<\/sup>F (899o<\/sup>C). As ligas de baixo ponto de fus\u00e3o s\u00e3o fundidas em m\u00e1quinas de c\u00e2mara quente. As ligas de ponto de fus\u00e3o intermedi\u00e1rio e alto s\u00e3o fundidas em m\u00e1quinas de c\u00e2mara fria. Nos \u00faltimos anos, come\u00e7aram a ser usadas m\u00e1quinas de c\u00e2mara quente especialmente projetadas para a fundi\u00e7\u00e3o de ligas de magn\u00e9sio.<\/span><\/small><\/p>\n

<\/a>Composi\u00e7\u00e3o qu\u00edmica (%) para alum\u00ednio e zinco<\/b><\/span><\/span><\/p>\n

<\/center><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n\n

Alum\u00ednio<\/b><\/span><\/p>\n<\/td>\n

\n

Zinco<\/b><\/span><\/p>\n<\/td>\n<\/tr>\n

Alum\u00ednio<\/span><\/small><\/td>\n\n

Restante<\/span><\/small><\/p>\n<\/td>\n

\n

3,5 a 4,3<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

C\u00e1dmio<\/span><\/small><\/td>\n\n

-<\/span><\/small><\/p>\n<\/td>\n

\n

.004 (m\u00e1ximo)<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Cobre<\/span><\/small><\/td>\n\n

3,0 a 4,0<\/span><\/small><\/p>\n<\/td>\n

\n

0,25 (m\u00e1ximo)<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Ferro<\/span><\/small><\/td>\n\n

1.3<\/span><\/small><\/p>\n<\/td>\n

\n

0,10 (m\u00e1ximo)<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Lideran\u00e7a<\/span><\/small><\/td>\n\n

-<\/span><\/small><\/p>\n<\/td>\n

\n

.005 (m\u00e1ximo)<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Magn\u00e9sio<\/span><\/small><\/td>\n\n

0.10<\/span><\/small><\/p>\n<\/td>\n

\n

.02 a .05<\/small><\/span><\/p>\n<\/td>\n<\/tr>\n

Mangan\u00eas<\/span><\/small><\/td>\n\n

0.50<\/span><\/small><\/p>\n<\/td>\n

\n

-<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

N\u00edquel<\/span><\/small><\/td>\n\n

0.50<\/span><\/small><\/p>\n<\/td>\n

\n

*<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Sil\u00edcio<\/span><\/small><\/td>\n\n

7,5 a 9,5<\/span><\/small><\/p>\n<\/td>\n

\n

*<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Lata<\/span><\/small><\/td>\n\n

0.35<\/span><\/small><\/p>\n<\/td>\n

\n

.003 (m\u00e1ximo)<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Zinco<\/span><\/small><\/td>\n\n

3.0<\/span><\/small><\/p>\n<\/td>\n

\n

Restante<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

Outros<\/span><\/small><\/td>\n\n

0.50<\/span><\/small><\/p>\n<\/td>\n

\n

-<\/span><\/small><\/p>\n<\/td>\n<\/tr>\n

As propriedades mec\u00e2nicas e a composi\u00e7\u00e3o qu\u00edmica variam para ligas espec\u00edficas.\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/center><\/div>\n

\u00a0<\/span><\/p>\n

<\/center><\/div>","protected":false},"excerpt":{"rendered":"

Die Casting Alloys Die casting alloys are normally non-ferrous, and there is a large number available with a wide range of physical and mechanical properties covering almost every conceivable application a designer might require. Aluminum and zinc alloys are the most widely used, and are followed by magnesium, zinc-aluminum (AZ) alloys, copper, tin and lead. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[81],"tags":[82],"class_list":["post-12999","post","type-post","status-publish","format-standard","hentry","category-die-casting-alloys","tag-die-casting-alloys"],"_links":{"self":[{"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/posts\/12999","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/comments?post=12999"}],"version-history":[{"count":0,"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/posts\/12999\/revisions"}],"wp:attachment":[{"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/media?parent=12999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/categories?post=12999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aludiecasting.com\/pt\/wp-json\/wp\/v2\/tags?post=12999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}