Abstract：There are many reasons for forming cracks of multi-steps PM products. The effect of punch deformation on the forming cracks was mainly studied. The different punch has different deformation when forming， which make the products generate cracks. The simple punch deformation can be calculated by Hooke’s law， and when the punch structure is complex， the SolidWorks finite element analysis can be used to calculate the deformation. Under the guidance of Hooke’s law， the deformation difference between punches is reduced by changing the forming process or the punch design， thus the PM products crack is avoided. Hooke’s law is a good guide in design stage to avoid multi-steps PM products forming cracks caused by punch deformation.
陈莉娥，余健波，曾锦艳，赵善杰. 模冲变形对多台阶粉末冶金件成形裂纹的影响研究[J]. , 2016, 26(04): 65-69.
CHEN Li-e，YU Jian-bo，ZENG Jin-yan，ZHAO Shan-jie. Study on the influence of punch deformation on forming cracks of multi-steps PM products. , 2016, 26(04): 65-69.
2016, Vol. 26 
