Dalian surface heat treatment can significantly improve the fatigue strength of workpieces:
Dalian surface heat treatment can significantly improve the fatigue strength of workpieces. For example, the automotive half shaft made of 40MnB steel was originally quenched and tempered as a whole, but was changed to quenched and tempered+surface heat treatment, which increased its lifespan by nearly 20 times. In addition, surface heat treatment reduced the sensitivity of the parts to notches. The size of the outer panel mold is generally larger,