Hardfacing may be applied to a new part during production to increase its wear resistance, or it may be used to restore a worn-down surface. "hardfacing welding" can largely reduce energy resources consumption and extend product life; it helps to reduce maintenance cost and increase productive efficiency. Hardfacing welding is widely used in heavy machinery industries like cement plant, power plant, steel mill, mining industry and bulk vessel. The products include roller, table liner, chute, cyclone, damper, elbow, pipe line, separator, ventilator, bunker, channel, screen, hopper, screw, bucket, cutter, truck, impeller, housing, duct.