On 2018-08-08 14:48:54
Why bearing parts need heat treatment
Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing technologies, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but endows or improves the performance of the workpiece by changing the microstructure inside the workpiece or the chemical composition on the surface of the workpiece. Its characteristic is to improve the internal quality of the workpiece.
At present, an important part of mechanical equipment is the bearing, which plays the role of supporting the mechanical rotating body, reducing the friction coefficient in the process of movement, and ensuring the rotation accuracy. Bearings are divided into rolling bearings and sliding bearings, which are classified according to the different friction properties of moving elements, so the quality requirements of bearing parts are high.
After heat treatment and quenching in Nantong, the bearing parts can obtain higher hardness and mechanical properties to meet the movement of the bearing.
The choice of quenching oil and quenching medium determine the cooling conditions of bearing parts heat treatment, while the cooling and heating conditions of bearing parts heat treatment determine the quality of bearing parts quenching. Therefore, the selection of quenching oil for bearing parts is very important.
The selection of quenching oil for bearing parts should take into account the requirements of cooling characteristics, operability, stability, economy and environmental protection of quenching oil. Among them, the choice of cooling characteristics of quenching oil is very important. The traditional quenching oil for bearing parts is mineral oil. With the higher and higher requirements of environmental protection, special quenching oil for heat treatment and quenching has emerged.