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　　Zinc alloy die-casting also has times of 'getting sick'

　　Zinc alloy die-casting is a common process in the mechanical manufacturing industry, favored for its high efficiency and stability. The zinc alloy die-casting parts produced are widely used in aerospace, automotive manufacturing, handicraft manufacturing, toy manufacturing, digital product manufacturing and other fields. Although the zinc alloy die-casting process has developed to a relatively mature level today, there are still some areas that need improvement.

　　Shrinkage holes are a "disease" of zinc alloy die-casting technology. The small holes that appear inside or on the surface of the die-casting part due to the volume shrinkage of the metal liquid during the solidification process are called shrinkage holes. They can affect the quality of the die-casting part and the subsequent processes, such as forming holes on the surface of the die-casting part or causing bubbles during surface treatment, directly causing the die-casting part to be scrapped and increasing production costs. So how should this "disease" be treated?

　　There is currently no possibility of a complete "cure" for shrinkage holes, and they can only be dispersed and made as small as possible. This is a limitation brought by the die-casting process. There are three methods to treat shrinkage holes to ensure that the die-casting part is cooled as evenly as possible; Improve the pouring system; Reasonably designing the structure of die-casting parts can effectively alleviate the "illness" of zinc alloy die-casting through the above methods.

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