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金属粉末喷焊与喷涂能使工作表面获得耐磨、耐蚀和耐热的保护层,从而提高产品的使用寿命。这种以提高零件的耐磨性为主要目的的表面硬化方法是基于喷焊(涂)材料的性能和喷焊(涂)工艺。由于粉末不受加工成形的限制,可以使用高硬度材料,因而获得的焊(涂)层硬度可高于用丝材或焊条硬化的表面;同时粉末的粒度可以随着工艺条件不同而调节,因而焊(涂)层的厚度易于控制。近年来国际上采用粉末硬化表面的工艺大大超过了惯用的堆焊和补焊工艺。合金粉末喷焊(涂)技术,在节约材料、节省能源和工时、延长零
Metal powder spray and spray can work surface wear, corrosion and heat-resistant protective layer, thereby enhancing the service life of the product. This method of surface hardening with the primary purpose of improving the wear resistance of the parts is based on the properties of the spray coating material and the spray coating process. Due to the fact that the powder is not constrained by the forming process, high-hardness materials can be used, so that the hardness of the welded layer obtained can be higher than that of the surface hardened with the wire or the electrode; meanwhile, the particle size of the powder can be adjusted according to different process conditions The thickness of the solder layer is easy to control. In recent years, the international use of powder hardening the surface of the craft much more than the usual surfacing and welding repair process. Alloy powder spray (coating) technology, save material, save energy and working hours, extend the zero