http://www.phenixltd.hk/Generally, in the process of electroplating chrome, the position of the tip of the workpiece surface is relatively easy to crack. This and you will choose, it will seriously affect the appearance and performance of the workpiece, the general crack phenomenon is really all the use of chrome plating additives Is it caused improperly?
Generally speaking, this crack phenomenon is actually not caused by improper use of Dechrome plating additive. Generally, there are two cases
The crack of the plating layer is generally that the nickel plating layer is normally free of cracks after the chromium layer is removed, the sulfuric acid content in the plating solution is high, and the chromium layer deposition rate is too fast, and then the chromium layer stress increases, which will cause microcracks. In addition, when the thickness of the chromium layer is thicker, then the chromium layer will generate micro-cracks or even micro-cracks visible to the naked eye. In this case, it is necessary to properly control the thickness of the chromium plating layer.
Generally, when cracks appear on the surface of the chromium plating layer, there is a phenomenon of cracks on the nickel surface after the chromium plating layer is removed. This is the reason for the excessive stress of the nickel plating layer that causes cracks in the nickel plating layer, which also causes the chromium plating layer to crack. When such micro-cracks appear in the nickel plating layer, attention should be paid to controlling the organic impurity content of the Dechrome plating additive during the nickel plating process, and the organic impurity treatment should be performed if necessary.
Therefore, the phenomenon of cracks in the chrome plating layer of the workpiece is not the improper use of chrome plating additives. Should promptly eliminate the cause of the failure in time to reduce the loss caused by the failure.