In general, on the surface of a domestic bearing raceway appears a softenedzone which affects greatly the working life of bearings.
国产轴承滚道表面普遍存在软化层,极大地影响轴承寿命。
3
With the heat input of laser welding increases, the hardness of HAZ decreases, but it is higher than that of the base metal, indicating no softenedzone after laser welding.