Barrel plating is one of the gold electroplating methods, and for tungsten gold-plated, the electroplating is an important gold plating process. So one of the production process of tungsten gold-plated bars is barrel plating. In general, the tungsten products, which use the barrel plating method to have the gold-plating treatment are with small volume. For the larger volumes of  tungsten products, they usually use rack plating method. The crafts such as tungsten gold-plated bars, its volume is not large and with a simple shape, so it’s suitable to take barrel plating method.

 

The common ways of barrel plating include vibration plating, tilting barrel plating and horizontal barrel plating, the differences between these three ways is that they use the different shape and axial direction of barrels. As early as in the late 1940s, China had already appeared the barrel gold-plating. Taking barrel plating process to produce tungsten gold-plated bars, then that is to put the molded tungsten products into the barrel, which has fulled with lot of holes, then the tungsten alloy bars will continuously rotate with the rotation of the barrel after conducting the current, so that can make the gold-plated solution be uniformly distributed on the surface of the tungsten alloy bars. This also means that the holes number, size of barrel wall, the size of the current and tungsten alloy bars will affect the final end products. The barrel plating production process of tungsten gold-plated bars is convenient and easy to operate and does not require too much manual operation thus saving labor, which occupies a very important place in the current electroplating field.