The basic structure of the piston can be divided into three parts: the head, the skirt and the pin seat.

Piston is reciprocating piston internal combustion engine, compressor, pump and other machinery along the cylinder block reciprocating movement of the cylinder axis of the mechanical parts. There are three types of piston: disc, cylinder and cylinder. The closed end face of the piston bears the pressure of the working fluid and forms a combustion chamber or compression volume with the cylinder head and cylinder wall. The piston is equipped with a piston ring or gum seal ring to prevent fluid leakage. Pistons can be made of cast iron, forged steel, cast steel or aluminum alloy.

Liugong loader accessories piston in high temperature, high pressure, high speed, poor lubrication conditions. The piston is directly in contact with high temperature gas, and the instantaneous temperature can reach more than 2500K. Therefore, the piston is seriously heated, and the heat dissipation condition is very poor, so the piston works at a very high temperature, the top is as high as 600 ~ 700K, and the temperature distribution is very uneven. The piston top bears great gas pressure, especially the power stroke pressure, which is as high as 3 ~ 5MPa for gasoline engines and 6 ~ 9MPa for diesel engines. This makes the piston produce impact and bear the effect of side pressure. The piston moves back and forth in the cylinder at a high speed (8 ~ 12m/s), and the speed is constantly changing. This creates a great inertia force, which makes the piston subject to a great amount of additional load. Operating under these harsh conditions, the pistons will deform and accelerate wear and tear. They will also generate additional loads and thermal stresses and be subjected to chemical corrosion by gas.

Use model：835、842、50C、855、50CN、856