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。
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。
The overall stress tended increasing during the forging process. Especially in complicated structure, the stress is larger and no significant changes in the law.
锻压过程中应力总体呈增加的趋势，在锻件结构较复杂的地方，应力值较大，且变化无明显规律；
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