The particularity of zinc die casting in electroplating
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    • Last updated December 10, 2020
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The particularity of zinc die casting in electroplating

Posted By anna xinxinmetal     December 10, 2020    


Xinxin Die-casting Factory in Pinghu County, Zhejiang Province specializes in producing aluminum alloy die-casting, zinc alloy die-casting and other non-ferrous metal die-casting products. With various mold manufacturing equipment and product surface brightening treatment, we are committed to producing various molds. One of the main products we promote is zinc die casting. Let me introduce it!

Zinc die casting is a kind of parts formed by die-casting zinc alloy through a die-casting machine. It has the characteristics of high machining accuracy, less cutting, small specific gravity, and high mechanical strength. Therefore, it is widely used in furniture, automobiles, ships, building materials, accessories, and machinery. , Chemicals, toys and other fields.

Compared with other die castings, the surface pretreatment of zinc die casting castings is very important. This is also due to its special electroplating. The specific performance is as follows:

1. First of all, the potential of the zinc electrode is very negative. It is an amphoteric metal and is easily chemically dissolved in acid or alkali. In a solution containing metal ions with a positive potential, hydrogen and metal ions are easily replaced and precipitated.

2. Secondly, during the zinc alloy die-casting process, due to the inconsistent surface temperature of the workpiece during cooling, the zinc alloy surface is prone to component segregation, and the surface is locally rich in zinc or aluminum. Strong alkali dissolves the aluminum-rich part first, and strong acid dissolves the zinc-rich part first, causing uneven surface weight loss, causing pores, pitting and even blistering on the surface.

Zinc die casting casting process:

Polishing-inspection-hanging-hot or cold degreasing-ultrasonic dewaxing-ultrasonic degreasing-cathode electrolytic oil removal-solid acid activation-pre-plating

We insist on providing high-quality products and good services to domestic and foreign customers. If you want to know more information, please click on the link: die casting supplier.