{"id":10164,"date":"2021-09-02T02:05:33","date_gmt":"2021-09-02T02:05:33","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10164"},"modified":"2021-09-02T02:05:33","modified_gmt":"2021-09-02T02:05:33","slug":"master-alloys","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/ar\/master-alloys\/","title":{"rendered":"Master Alloys"},"content":{"rendered":"

At present, various master alloys are generally used to replace additives, because master alloys have a low melting point and are easier to quickly and uniformly melt in the aluminum melt. However, many manufacturers use scrap aluminum or low-grade aluminum ingots when producing master alloys, which contain more impurities. When using master alloys, these impurities are brought into the melt and cause pollution.<\/p>\n

When smelting alloys, there are generally three ways to add alloying elements: one is to add pure metals directly to the aluminum melt, such as copper, magnesium, zinc, silicon and other metals. The other is to make the alloying elements into a master alloy in advance. Then it is added to the aluminum melt in the form of a master alloy. At present, it is more commonly used to add various metal additives to the aluminum melt. In addition, there is a method of adding, that is, adding salts or compounds containing alloying elements, and reducing the elements through the substitution reaction with the base metal and entering the melt.<\/p>\n

The purpose of using aluminum alloy additives<\/a> is to facilitate the addition of some alloying elements that have a higher melting point and are not easily melted or easily oxidized and volatilized, so as to more accurately control the composition of the aluminum alloy. In addition, the use of a master alloy as a charge can prevent the melt from overheating, shorten the smelting time, and reduce metal burnout.<\/p>\n

\"\"<\/p>\n

The aluminum alloy additives used should meet the following basic requirements as much as possible:<\/strong><\/p>\n

(1) The melting point should be lower than or close to the melting temperature of aluminum alloy;
\n(2) The content of alloying elements is as high as possible, and the composition is uniform;
\n(3) Low content of impurities, gases and non-metallic inclusions:
\n(4) It has sufficient brittleness, is easy to break, and is convenient for ingredients;
\n(5) It is not easy to be corroded, and should not be broken into powder when stored under atmospheric temperature and pressure.<\/p>","protected":false},"excerpt":{"rendered":"

At present, various master alloys are generally used to replace additives, because master alloys have a low melting point and are easier to quickly and…<\/p>","protected":false},"author":1,"featured_media":10165,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6144],"tags":[12517,12516],"class_list":["post-10164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-metal-additive","tag-aluminum-alloy-additive","tag-master-alloys-for-aluminum-melt"],"yoast_head":"\nMaster Alloys for Aluminum Melt, Aluminum Alloy Additive<\/title>\n<meta name=\"description\" content=\"At present, various master alloys are generally used to replace additives, because master alloys have a low melting point.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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