liga-m\u00e3e<\/a> \u00e9 eficaz tanto para taxas de resfriamento baixas quanto altas para a liga de alum\u00ednio-sil\u00edcio que deve ser utilizada nele. A taxa de dissolu\u00e7\u00e3o \u00e9 muito alta (geralmente inferior a um minuto). Em compara\u00e7\u00e3o com a tradicional liga-m\u00e3e de estr\u00f4ncio para fundi\u00e7\u00e3o de alum\u00ednio, sua perda de temperatura \u00e9 relativamente baixa, e esta \u00faltima apresenta menor teor de estr\u00f4ncio. Como a liga obtida \u00e9 muito d\u00factil, ela pode ser produzida na forma de fio ou bobina, podendo, assim, ser alimentada por meio de um alimentador de bobina convencional.<\/p>\nA quantidade de estr\u00f4ncio situa-se, preferencialmente, entre 7,5 e 25%. A quantidade de alum\u00ednio na liga-m\u00e3e \u00e9 geralmente de 65 a 95%. Pode haver uma pequena quantidade de um ou mais outros elementos na liga-m\u00e3e, como ferro e sil\u00edcio. Tamb\u00e9m podem estar presentes tra\u00e7os das impurezas habituais.<\/p>\n
Em uma forma de realiza\u00e7\u00e3o preferida, a liga-m\u00e3e tamb\u00e9m cont\u00e9m tit\u00e2nio e\/ou boro, pois esses elementos apresentam um efeito de refinamento da estrutura muito bom nos cristais de alum\u00ednio, resultando assim em ligas de alum\u00ednio-sil\u00edcio para fundi\u00e7\u00e3o com propriedades ainda mais aprimoradas. A quantidade de tit\u00e2nio situa-se adequadamente entre 0,5 e 5%, e a quantidade de boro situa-se adequadamente entre 0,02 e 2%. De prefer\u00eancia, a quantidade de tit\u00e2nio \u00e9 de 1 a 3% e a quantidade de boro \u00e9 de 0,05 a 1%.<\/p>","protected":false},"excerpt":{"rendered":"
The aluminum strontium master alloy is suitable for use as a structure refiner during the solidification of molten aluminum-silicon alloys, and is a molten alloy…<\/p>","protected":false},"author":1,"featured_media":7030,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1460,1468,1469,7667,1459,4663],"class_list":["post-7029","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-aluminum-alloy-modification-process","tag-aluminum-alloy-modifier","tag-aluminum-strontium-alloy","tag-aluminum-strontium-master-alloy","tag-modification-treatment-technology","tag-sr-modification"],"yoast_head":"\n
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