aluminum t track extrusion.Analysis and Solution of Casting Leakage in Die Casting Processing Plants

　　Leakage of die-casting parts is usually a problem that is only discovered during airtightness experiments in die-casting processing plants. This has a significant impact on the product, as it wastes time to remake and increases the manufacturing cost.

　　To solve the problem from the root, the following points need to be addressed. Firstly, the problem of pouring. Some leaks are caused by impurities in the metal liquid during pouring, which can easily penetrate the thin wall and cause leakage. Therefore, a reasonable pouring system design should be carried out before pouring to filter out impurities in the metal liquid. Temperature control should also be paid attention to during pouring, because excessive pouring temperature causes the mold cavity to overheat and cannot cool the casting quickly. High pouring temperature will increase the phenomenon of casting leakage. The second issue is the structure of the casting. Due to the complex structure and uneven thickness of the casting, it is easy to form hot spots in thicker areas. If the hot spots are not treated in a timely manner, shrinkage and looseness can occur, leading to leakage. The next step is to add cold iron in areas where hot spots are prone to form.

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