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Cleaning Methods And Lubrication Requirements Of Copper-aluminum Castings Before Chrome Plating
- May 09, 2018 -

As a mechanical component, the surface of the copper-aluminum casting is usually chrome-plated, in order to make its surface more glossy, and at the same time it can further improve the wear resistance and corrosion resistance of the casting. However, in actual operation, due to the influence of some factors, the surface of the copper-aluminum casting may cause some problems or defects, including draping seams, burrs, sticky sand, etc., and then need to be dealt with.


    There are three kinds of cleaning methods for copper and aluminum castings before chrome plating. One is simpler manual cleaning, which is manual cleaning. It is suitable for single parts, small batches, or parts with relatively complex shapes. The other is spray and shot blasting equipment. It is cleaned by shot blasting machines and other equipment. It has high efficiency.


    Another type is roller cleaning, which removes sticky sand, burrs, and oxide scale on the surface through friction or impact. It is very simple and convenient to operate. It is only used for noise and production efficiency, so it is mainly used in Small casting workshop.


    After effective treatment, it is possible to perform chrome plating on the surface of the copper-aluminum casting to form a good chrome plating layer, thereby improving the quality and performance of the casting and making it more effective in the application of machinery. Of course, in addition to the cleaning and chrome plating of copper-aluminum castings, its lubrication is also very important, especially when the castings are used in wet, high temperature, and impact working environments.


    Requires copper-aluminum casting lubricants must have good heat resistance, oxidation resistance, anti-emulsification and anti-rust, so you can choose the viscosity of 46-100 antioxidant rust lubricant, but also have to use heat Good or mechanically stable 2 or 3 complex calcium, sodium or lithium based greases, or even molybdenum disulfide or graphite grease.