The experiments consisted of the measurement of yield stress, tensile strength and hardness for samples cut from various parts of the forging.
试验包括对取自不同锻造零件的试块的屈服强度、抗拉强度及硬度的测量。
2
By virtue of modern metallograph analyse technology, the size of grain, hardness and residual stress of bevel gear by closed-die cold forging is studied.
借助现代冶金分析技术对闭塞冷锻行星齿轮的晶粒尺寸、硬度变化和残余应力分布规律进行了研究。
3
The overall stress tended increasing during the forging process. Especially in complicated structure, the stress is larger and no significant changes in the law.