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,

Surface treatment is a process of changing the surface of metal materials:

Dalian metal surface treatment is an ancient technology, and since there were humans on Earth, surface treatment has been a technology that humans have long mastered. 

What products are PC plastic particles used for

① Hand polishing tools. Manual polishing mainly involves using sandcloth to wrap wooden blocks (rubber blocks) or water sandpaper to wrap wooden blocks (rubber blocks) for polishing.