Spray powders occupy a very important position in the entire thermal spray material. Thermal spray powder alloys include nickel-based, iron-based and cobalt-based alloy powder, according to the hardness of different coatings were applied to mechanical parts repair and protection. Thermal spray technology after years of development, China has formed a complete system of research and production equipment, currently engaged in this work have more than 20 units, capable of producing all types of oxyacetylene flame spraying equipment, spray melting equipment, arc spraying equipment, complete sets of equipment, plasma spraying, spray equipment, supporting a variety of special equipment.