precision metal fabricators.The three common defects of aluminum alloy die-casting: gravure printing

　　Aluminum alloy die-casting is the most widely used die-casting process, because aluminum alloy has excellent die-casting performance and can be easily die-casting and processed into various specifications and sizes of die-casting parts. However, this is also because of the characteristics of aluminum alloy, and the aluminum alloy die-casting produced by die-casting will also have various defects.

　　Gravure printing is a common defect in the aluminum alloy die-casting process. Its specific manifestation is that the thicker part of the die-casting part will have smooth disc-shaped gravure printing on the surface, which greatly affects the appearance quality of the die-casting. The reason why aluminum alloy die-casting produces this defect is mostly due to the following reasons: the design of the die-casting part 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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