How does the gear manufacturer control the distortion during gear heating?

How does the gear manufacturer control the distortion during gear heating?

In fact, in the heating process, not only the distortion caused by thermal stress, but also the release of internal stress itself will cause distortion. In the process of producing high-precision gear products, attention should also be paid to the distortion of gear heat treatment during the heating process.

1. The gear blank is isothermal normalized. After normal normalizing, the difference of microstructure and hardness of gear blank is large. Isothermal normalizing can first improve the uniformity of microstructure and hardness, and reduce the distortion caused by uneven processing stress. In recent years, the application of isothermal normalizing of gear blanks has played a very good role in the control of gear heat treatment distortion in China.

How does the gear manufacturer control the distortion during gear heating?

In fact, in the heating process, not only the distortion caused by thermal stress, but also the release of internal stress itself will cause distortion. In the process of producing high-precision gear products, attention should also be paid to the distortion of gear heat treatment during the heating process.

1. The gear blank is isothermal normalized. After normal normalizing, the difference of microstructure and hardness of gear blank is large. Isothermal normalizing can first improve the uniformity of microstructure and hardness, and reduce the distortion caused by uneven processing stress. In recent years, the application of isothermal normalizing of gear blanks has played a very good role in the control of gear heat treatment distortion in China.