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Electroplating of zamak die castings
Copy from:    Author:kenostian    Time:2016-04-01 16:50:13    Popularity:322

   The chemical stability of zamak die castings is poor, need to be plated a layer of corrosion resistance of copper coating, nickel coating or chromium coating on the surface, to improve its corrosion resistance. Before electroplating of zamak die castings, it is necessary to know the proportion of zinc and aluminum in the alloy. High aluminum content will accelerate the surface oxidation, resulting in a decline in the success rate of electroplating. Aluminum content is too low, it will reduce the toughness of parts, parts easy to break. Aluminum content is best between 3.5~4.0%. The reasonable treatment of zamak die casting is the key to the success of electroplating. However, the processing method of steel parts is often applied to the zinc die casting parts or ignore some of the steps in the process in the prophase treatment project. This is the cause of a lot of rework or scrap of zinc alloy castings.
   
Zamak die casting parts are one-time die-casting molding, high production efficiency, low processing cost, very suitable for manufacturing tolerance requirements is not high and complex shape parts. Now it has been widely used to replace some complicated copper alloy parts and steel parts. The surface treatment technology is becoming more and more mature.


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Factory Address: Bao'an District of Shenzhen City Songgang Yan State Community Yanshan Road, Building B, No. 5

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