The front and rear casings of the aero-engine compressor are made of iron-based and nickel-based alloys respectively. During the process of use, the butt joints of the front and rear casings are in a vibrating state, and are prone to impact wear and damage after a period of wear. The life of the front and rear casings is shortened, so it is necessary to prepare a coating with high wear resistance to solve the wear of aviation equipment and prolong the service life of aviation equipment.

The coating material of turbine outer ring of engine, especially aeroengine, requires advanced high temperature resistance, oxidation resistance, thermal erosion resistance and good sealing performance. Tungsten chromium cobalt alloy powder is a kind of coating material which can be used as the bottom layer. It has good adhesion and bonding strength with titanium alloy and other superalloys. The structure of the coating is evenly distributed. There are no cracks, delamination and separation between the coating and the substrate. It is a good bottom layer material for spraying.

The piston and connecting rod mechanism are connected to the crankshaft. The crankshaft bears the pressure generated by the combustion of fuel mixture through the piston and connecting rod, and converts the reciprocating motion of the piston into rotating motion. A sliding component between the crankshaft and the connecting rod becomes a bearing, which together with the oil forms a sliding bearing.

When it comes to crankshaft, finely balancing the rotating assembly made by tungsten alloy counterweight is a step that is often overlooked.