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The reason of shrinkage and shrinkage defects in Dalian aluminum die casting processing is that the liquid shrinkage and solidification shrinkage of metal are larger than the solid shrinkage. When performing sequential solidification, the liquid metal cannot be replenished in the solidified area, and holes will be formed. Large and concentrated holes are called shrinkage holes, and small and dispersed holes are called shrinkage holes. Prevention methods are:
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Introduction of processing types of aluminum die castings in Dalian1) Dalian Aluminum die-casting pressure casting has three casting methods: low pressure (pressure no more than 20MPa), medium pressure (pressure no more than 300MPa) and high pressure (pressure more than 3000MPa).
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What surface treatment is required for aluminum alloy die casting?1. Aluminum phosphatingThe effects of accelerant, fluoride, Mn2+, Ni2+, Zn2+, PO4 and Fe2+on the phosphating process of aluminum were studied in detail by means of SEM, XRD, potential time curve and film weight change.
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2022-12-05
Pay attention to the following points when producing and using aluminum alloy die-casting die?
Pay attention to the following points when producing and using aluminum alloy die-casting die?1. When aluminum alloy liquid metal enters the mold cavity under high pressure and high speed, it will produce intense friction and impact on the surface of the formed parts of the mold, causing erosion and wear on the surface of the mold. -
Aluminum alloy die castings refer to aluminum or aluminum alloy equipment and devices obtained by casting. Generally, aluminum or aluminum alloy heated to liquid is poured into the mold cavity through sand mold or metal mold to obtain aluminum parts or aluminum alloy parts of many shapes and sizes, which are generally called aluminum alloy die castings.
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Dalian aluminum alloy die casting is mainly used in electronics, automobiles, motors, home appliances and some communication industries. Some aluminum alloy products with high performance, high precision and high toughness are also used in industries with high requirements such as large aircraft and ships.
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