Device for manufacturing piston skirt coating and coating manufacturing method

The invention discloses a device for manufacturing a piston skirt coating and a coating manufacturing method. The device comprises a compressor, a material collecting bin, an operating bin, a plurality of balls and a solid lubricant, wherein the solid lubricant and the plurality of balls are arranged in the material collecting bin, the operating bin is connected with the material collecting bin, afirst jetting mechanism is arranged in the operating bin, the first jetting mechanism is connected with the compressor and the material collecting bin, and the jetting direction of the first jettingmechanism is opposite to a platform. According to the device for manufacturing the piston skirt coating and the coating manufacturing method, the balls and the solid lubricant impact the surface of apiston skirt, the surface tissue of the skirt is compressed and refined to form a pit so that a metallographic structure with a certain depth on the surface of the skirt part can be changed, and the hardness of the surface of t