To solve the casting defects caused by hereditary charge, child copper recovery, we must use high metallurgical quality of aluminum ingots, master alloys and other charge. Specific criteria are as follows: (1) on the fracture surface should not have pinholes, pores pinhole should be less than three, the local (not more than 25% of the subject area) should not be more than three, more than three must take heavy melting Measures to reduce the pinhole. Remelting refining the same way as regular aluminum smelting, casting temperature should not exceed 660 ℃, for those of the original large grain of aluminum ingots, ingots, etc., should be used to lower the temperature of the ingot mold, making them rapid solidification, grain refinement tablets. 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, Jiangsu Zi copper recovery, but not absolute, Anhui child copper recovery, gradually increasing the silicon content of the destructive power of the tool is gradually increased . 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.江苏子 copper recovery | child copper recovery | Sun Shine recycling scrap metal recycling scrap metal from the Linyi City Shengxin Limited. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) strong, credible, in Linyi, Shandong scrap metal industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengxin scrap metal recycling into the brilliant and you work for a better future!