Transient surface of the molten aluminum to form a very stable oxide. With the speed of the oxidation temperature and the presence of certain alloying elements (such as magnesium and beryllium) increases. If the surface of the molten aluminum while not being in interference recovering zinc alloy, then the oxide film formed on the surface is self-limiting, and any turbulence will mix the oxide film to melt most, and fresh produce to facilitate more surface oxides. The resulting oxide film and oxide impurities are very detrimental to the performance of cast aluminum parts, however, the alloy smelting, transport or pouring the molten metal and the mold is filled with the process will cause turbulence. In order to prevent the oxide film formed in the cast, we need to let the metal, especially in milli turbulent state into the mold cavity. For most castings, the use of gravity casting method it is impossible to do this, Jiangsu zinc alloy recycling, because the sprue head height in order to speed up the flow rate turbulence occurs, so be sure to use anti-gravity method or liquid Bit die casting technology. Such filters slow down the speed of the metal flow to slow enough to prevent oxide production. Also to be injected from the bottom of the mold cavity, into each level of the order of casting power should be carefully designed, Hubei zinc alloy recycling in order to avoid "waterfall" - mold liquid metal falling from a higher to a lower level level, Zhejiang zinc alloy recycling, thereby forming a metal oxide surface newborn. Use of injection mold from the bottom of the method, liquid metal oxide layer on top of the sand will be promoted to the top level of the box and into the top riser, so it will not damage the castings. Zinc recovery | Hubei zinc alloy recycling | scrap metal recycling Shengxin (high merchant) recovered from the Linyi City Shengxin scrap metal Limited. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) is specialized in "scrap metal, alloy, machine aluminum, brass, wine together, miscellaneous aluminum, copper ash, zinc ash, zinc scrap" of the enterprise, the company Adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhu new.