Method of heat treatment for erw casing
General chemical heat treatment of erw casing, such as carburizing, carbonitriding, carbon and nitrogen boron infiltration, respectively, are additional single component, two components and three components of the multi-parameter heat treatment. In recent years, but also the development of a number of new technology using the erw casing chemical heat treatment, such as vacuum chemical heat treatment, fluid bed chemical heat treatment, ion osmosis metal, ion implantation, laser surface alloying, etc., can improve the erw casing wear Loss of corrosion resistance and other performance. Rare earth in the application of chemical heat treatment (ie, with rare earth infiltration), can significantly improve the rate of seepage, shorten the treatment cycle, and can improve the wear resistance and corrosion resistance of the layer, which is a major feature of our country. In addition, the erw casing solid solution chemical heat treatment is also a no...