Analysis on heat treatment process of steel ring by high frequency induction heating equipment

According to the technical requirements of the steel ring, it is a thin-walled ring part, which is very easy to be damaged, so we should carry out heat treatment process on it with high-frequency induction heating equipment, first quenching and then low-temperature tempering, so that the ring's The surface can get higher hardness and anti-seizure, good wear resistance and toughness. Because it is induction heating, its heating temperature is very high, the heat treatment time is long, and the probability of deformation of the ellipse is relatively high, which will easily lead to an increase in the degree of deformation of the steel ring, thereby reducing its pass rate. After the later straightening treatment, the result is improved.

In the process of heat treatment, due to the large surface area of the steel ring, in order to increase the heating speed and efficiency, reduce production costs, etc., the heating temperature of the steel ring will be increased to keep it above 850°C. In addition, after the heat preservation is over, let the temperature drop to about 850°C, and then heat it for 10 minutes to perform quenching heat treatment, or cool the steel ring, so as to reduce the degree of deformation of the steel ring and make it obtain high hardness. Surface, to meet its anti-seizure and wear resistance, improve the service life of the steel ring.

Judging from the technical requirements of the steel ring, the more important part is its degree of deformation. From many experiments, it is known that the most important factor affecting the deformation of the steel ring is the temperature of the heat treatment of the high-frequency induction heating equipment, if the heating temperature Reduced, the plastic resistance of the steel ring will increase, and its comprehensive technical ability of resistance to stress deformation, quenching deformation, and high temperature deformation will be improved, and the deformation will be reduced; and after the temperature is reduced, the heating temperature of the parts and The distance between cooling temperatures will be reduced, and the temperature inconsistency of each part will also be reduced. As a result, the thermal stress and structural stress generated by the steel ring will be reduced, and the deformation will also be reduced. Therefore, for steel rings, we try our best to use lower heat treatment temperature and quenching temperature to prevent its deformation more effectively.

As technology becomes more and more advanced, the heat treatment process of high-frequency induction heating equipment for steel rings is also becoming more and more advanced. It not only reduces the degree of deformation of the steel ring and enhances the consistency of its change, but also improves the level of its metallographic structure, reduces the shape of carbide and martensite, and reduces the production cost.