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Zinc alloy and its species

  • Author:Ren sijia
  • Source:www.xy-global.com
  • Release on:2021-10-29
The zinc alloy is an alloy that is incorporated with other elements based on zinc. Often added alloy elements include aluminum, copper, magnesium, cadmium, lead, titanium and other low temperature zinc alloys. Low melting point of zinc alloy, good fluidity, easy gwandering, brazing and plastic processing, corrosion resistance in the atmosphere, is easy to recover and remelten; however, the creep strength is low, and the natural aging causes dimensional changes. Preparation, die-casting or pressure machining materials.
According to the manufacturing process, it can be divided into cast zinc alloy and deformed zinc alloy. The main added elements of zinc alloy include aluminum, copper and magnesium. Zinc alloy can be divided into two categories of deformation and casting zinc alloy according to the processing process. The fluidity and corrosion resistance of cast zinc alloy is good, suitable for die-cast meters, automotive parts housing, and the like. The cast zinc alloy is divided into pressure casting zinc alloy (solidified under external pressure) and gravity casting zinc alloy (solidified under gravity).
Pressure casting zinc alloy This alloy has been used in the automotive industry in 1940, and the output has increased, and about 25% of the total consumption of zinc is used to produce such an alloy. Advanced applicable technology is constantly adopting, developing faster. Correspondingly, relevant talents are also increasing, and there is a fully equipped steel talented network. The most commonly used alloy is Zn-Al-Cu-Mg system. Certain impurities significantly affect the performance of the cast zinc alloy. Therefore, the content of impurities such as iron, lead, cadmium and tin is extremely strict, and the upper limit is 0.005%, 0.004%, 0.003%, 0.02%, respectively, so the die-cast zinc alloy should be selected from high purity of high pure zinc as high than 99.99%.
The gravity cast zinc alloy can be cast in a sand type, plaster mold or a hard mold. This zinc alloy does not only have the characteristics of general die-cast zinc alloy, but also high strength, good casting performance, and cooling speed has no significant effect on mechanical properties. The waste can be recycled, and the gate is simple, and it is not sensitive to overheating and remelting. Small rate, less air hole, electroplating, can be made in conventional methods.