decorative metal works near me.Analysis of reasons for foreign particles in die-casting parts by die-casting processing plants

　　The presence of particulate foreign objects can affect the quality of die castings and is a major hidden danger in die casting production. Granular foreign objects can cause the phenomenon of mucosal damage, and in severe cases, it can also cause the scrapping of die casting molds and increase the burrs of aluminum alloy die castings. There are three reasons that affect the formation of particles: mold, raw materials, and die casting process. The granular burrs on the surface of die castings can be classified into four types: air dust adsorption, impurities in aluminum rods, defects in aluminum rods, and dust in the aging furnace. The reasons for its formation include: firstly, the influence of aluminum rod quality. Due to high-temperature casting, the casting speed is fast and the cooling strength is high. 2、 The influence of the mold. In extrusion production, the mold works under high temperature and pressure, and is affected by pressure and temperature, resulting in elastic deformation of the mold. 3、 The impact of extrusion technology. During extrusion, it was found that the correct selection of extrusion process parameters is also an important factor affecting granular burrs.

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