As the name implies, the piston rod is the connecting part that supports the work of the piston. Most of it is used in the oil cylinder and cylinder motion execution parts. It is a moving part with frequent movements and high technical requirements. The quality of its processing directly affects the life and reliability of the entire product. sex. The piston rod has high processing requirements, and its surface roughness is required to be 0.4 to 0.8, which is quite strict. The movement of the piston rod is very frequent, so it can be seen that it needs to bear huge frictional force during work, so the piston rod requires high hardness, wear resistance and service life. In order to achieve this, the only way to heat the piston rod is to use ultra-sonic quenching.

Quenching is an effective method to improve the service life and hardness of the piston rod. Ultrasonic quenching equipment performs quenching heat treatment on the piston rod, usually heating the temperature to 800-900 ° C, and then rapidly cooling, so that the hardness of the workpiece has been improved and the needs of its work have been met.

The piston rod is quenched in an ultra-sonic quenching furnace. The quenching speed is generally required to be relatively fast. Such a fast quenching speed is to reduce the decarburization and oxidation of the workpiece during the quenching process and ensure the quenching quality. On the other hand, the fast quenching speed is also an effective way to avoid the quenching deformation of the workpiece. When the supersonic quenching furnace quenches the piston rod, it will not produce noise and dust, which greatly improves the working environment of workers, improves the workshop environment, and meets the requirements of national environmental protection policies.