What are the defects of aluminum alloy die-casting parts

　　If we want to know why aluminum alloy die castings have defects, we first need to understand some characteristics of aluminum alloy. Aluminum alloy is a structural material of non-ferrous metal, which is the most widely used in industry. Aluminum alloy has low density, high strength, good plasticity, can process various shapes, and has good conductivity, thermal conductivity, and corrosion resistance.

　　The common defects of aluminum alloy die castings are as follows:

　　1. Pores

　　Smooth holes in the interior (machining surface) of die castings

　　2. Strain

　　Along the direction of delamination, due to metal adhesion, the draft angle is too small, resulting in tensile marks on the surface of the casting

　　3. Deformation

　　The overall deformation of the geometric shape of the casting

　　4. Bubbles

　　The bubbles formed by gas accumulation and bulging under the surface of the casting are mostly circular and distributed on the surface

　　4. Cracks

　　Casting is damaged or broken to form fine wire like gaps

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