Bubble formation after zinc alloy die-casting electroplating

　　The skin of zinc alloy die-casting is prone to blistering during electroplating processing. The surface bubbles not only affect the appearance of zinc alloy die-casting, but also the toughness of zinc alloy die-casting. The occurrence of bubbles in zinc alloy die-casting parts often troubles die-casting factories, and poor quality can also cause certain difficulties for customer shipments. However, the problem of bubbles in zinc alloy die-casting parts can be caused by many reasons and is difficult to detect, as it is an internal defect that often appears after electroplating is completed, So today, let's talk about how to avoid the occurrence of blistering problems in zinc alloy die-casting parts after electroplating!

　　The pre-treatment before electroplating is the main cause of zinc alloy foaming, and because zinc alloy is a zwitterionic metal, it is easy to react with acid and alkali, so there are two processes before electroplating: degreasing and cleaning. And degreasing is also the main culprit causing blistering in zinc alloy electroplating.

　　Due to the fact that degreasing is generally an alkaline room temperature degreaser, and acid washing solutions are usually a mixture of three acids, slight control can easily lead to the occurrence of bubble problems in zinc alloy die-casting parts. So to avoid the occurrence of surface bubbles in zinc alloy die-casting parts, it is necessary to find an experienced electroplating factory, so as to prevent the problem of bubbles in zinc alloy die-casting electroplating from the source.

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