extruded aluminum square tubing.How to evaluate the quality of die-casting parts

　　As the saying goes, "quality determines success or failure." Compared to using die casting technology to make this product, customers have a relatively high demand for the product's service life and quality. Therefore, measuring the quality of a die casting should be based on the following three aspects:

　　(1) Appearance quality includes surface roughness, surface quality, dimensional tolerances, positional tolerances, and quality deviations of castings.

　　(2) Internal quality refers to the chemical composition, physical and mechanical properties, metallographic structure, as well as the presence of pores, inclusions, and cracks inside the die casting.

　　(3) Quality of use refers to the ability of castings to meet various usage requirements and work performance, such as wear resistance, corrosion resistance, cutting ability, weldability, etc

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