Aluminum alloy die-casting parts sandblasting selection

Sandblasting process as a popular process of aluminum alloy die-casting, is widely used in a variety of aluminum alloy shell die-casting parts, then want to make exquisite aluminum alloy die-casting, aluminum alloy shell processing – sandblasting process need to pay attention to four points:
(1), before sandblasting, the surface of the aluminum alloy die-casting shell needs to be cleaned, the cleaning process is to use sulfuric acid to remove the surface oil stains and dirt, after pickling, and then neutralize with alkali;
(2), after pickling, dry or dry the aluminum alloy shell die-casting parts to check the surface, mainly to check whether it is cleaned, whether there is a watermark, whether there is yellowing, etc
(3) Sandblasting is the process of roughening the surface of the aluminum alloy shell through the impact of high-speed sand flow. The model of the sand grain used is generally 30#-320#, the larger the value, the smaller the sand grain. The roughness of the sand grain on the surface of the aluminum alloy shell is determined by the sand grain type and the size of the sandblasting pressure, under the same pressure, the larger the sand grain value, the finer the surface; In the case of consistent sand type, the greater the pressure, the coarser the surface.
(4) Sandblasting is divided into manual sand blasting and automatic sandblasting. Manual sandblasting efficiency is relatively slow, and sometimes the spray is uneven; Automatic sandblasting efficiency is high, and the surface thickness is uniform. Aluminum alloy die casting industry is more and more widely used, more and more products are replaced by aluminum alloy, want to make beautiful appearance of aluminum alloy shell die casting, but also need to go through a series of external surface treatment, and sandblasting process in aluminum alloy shell processing is more common, the effect of treatment is also deeply loved by consumers!