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等离子喷涂具有高温高速的等离子焰流和广泛的工艺调节性,作为一种表面强化的手段,有它特有的优越性。首先,它可以根据不同的需要,灵活地选用不同的涂层材料,以获得不同性能的涂层。其次,在喷涂过程中,可以将工件基体的温度控制得低,因而工件变形很小。工件喷涂后,除对涂层部分加工外,其它部分可以不再加工。特别是一些不能通过普通热处理强化的材料,例如1Cr18Ni9Ti,采用等离子喷涂工艺在其表面制取耐磨涂层,是提高耐磨性的有效方法。近几年来,我厂在制造旋转机械的易磨损零部件中,采用等离子喷涂工艺获取耐磨层,把等离子喷涂技术的应用从单纯的对零
Plasma spray with high temperature and high plasma flame flow and a wide range of process regulation, as a means of surface strengthening, has its unique advantages. First of all, it can flexibly choose different coating materials according to different needs to obtain different performance coatings. Secondly, during the spraying process, the temperature of the substrate of the workpiece can be controlled so low that the deformation of the workpiece is small. After the workpiece is sprayed, in addition to the coating part of the processing, the other part can no longer be processed. In particular, some can not be enhanced by ordinary heat treatment of materials, such as 1Cr18Ni9Ti, plasma spraying process to obtain wear-resistant coating on the surface, is an effective way to improve the wear resistance. In recent years, I plant in the manufacture of easy-wear parts of rotating machinery, the use of plasma spray process access to wear-resistant layer, the application of plasma spraying technology from a simple zero