A) crucible cast aluminum alloy commonly used iron crucible, can also be cast and welded steel crucibles. New and old crucible crucible long unused, before use shall blow, and heated to 700--800 degrees, keeping 2--4 hours to burn off the inner wall of the crucible is attached to water and flammable substances, and leave to cool to 300 When degrees, Hunan copper ash recycling, carefully clean the crucible wall, spray paint at a temperature of not less than 200 degrees. Crucible before use should be preheated to dark red (500 - 600 degrees), and incubated for more than two hours. Before the new crucible melting outside, it is best to melting furnace with a grade back charge. (B) Prepare bell smelting tools, pressure scoop, mixing spoons, ladles, etc. ingot mold should be preheated before use, and at a temperature of 150 degrees --- 200 degrees coated with a protective coating, and thoroughly dried, copper ash recycling, drying temperature is 200--400 degrees, holding more than 2 hours, Shandong copper ash recycling after use should be completely clear on adhering to the surface oxides, fluorides, (preferably carried out blowing sand). Silicon carbide has a corrosive effect on. While the general will be more than 12% Si aluminum alloy called high silicon aluminum alloy, it is recommended to use diamond cutter, but this is not absolute, the silicon content gradually increased the destructive power of the tool is also gradually increasing. Therefore, some manufacturers in the silicon content of more than 8% on the recommended use of diamond tools. Aluminum silicon content of between 8% -12% of a transition zone, both can use ordinary carbide, diamond tools can also be used. But the use of carbide should be used by PVD (Physical layer) method, no aluminum elements, the film thickness of smaller tools. Because PVD method and a small film thickness of the tool to maintain a more sharp cutting edge as possible (otherwise, avoid abnormal growth at the edge of the film needs to be sufficient edge passivation, cutting aluminum will not sharp) while the film material containing aluminum may damage the blade and combined film and substrate film cutter and workpiece material cooperation with the pro. Superhard coatings because more aluminum compounds, nitrogen, three of titanium, cemented carbide substrate may be due to a small amount of flaking caused by chipping over the film when peeled. Shengxin scrap metal recycling (Figure) _ _ copper ash copper ash recycling Recycling scrap metal from the Linyi City Shengxin Limited. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers to visit patrons, sincere cooperation for a better future. Shengxin scrap metal recycling - your trusted friend, Address: Economic Development Zone, Linyi, Shandong Province, May Buzhen Contact: Zhu new.