The fundamental solution to common defects in aluminum alloy die-casting

　　Aluminum alloy die-casting, due to its excellent characteristics, can easily be processed into various specifications and sizes of die-casting parts, making it the most widely used die-casting process. However, this is also because of the various characteristics of aluminum alloy, the aluminum alloy die-casting parts produced by die-casting will have many defects, but overall, the advantages outweigh the disadvantages. Therefore, aluminum alloy die-casting can become the only commonly used die-casting process.

　　Aluminum alloy die-casting can produce those defects, and through the efforts of many people, fundamental solutions have been found, such as gravure printing. Gravure printing is a common defect in aluminum alloy die-casting technology, which is manifested by smooth disc-shaped gravure printing on the surface of thicker parts of the die-casting parts, which greatly affects the appearance quality of the die-casting parts. The reason why aluminum alloy die-casting produces these defects is mostly due to the following reasons: the design of the die-casting parts is unreasonable, and the wall thickness difference is too large; Die casting machine provides lower die casting ratio; The local temperature of the die casting mold is too high; The mold opening time is too early, and the metal liquid has not cooled completely.

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