大型环件表面孔洞类缺陷性质及原因分析

Analysis on the Properties and Causes of Hole Defectson the Surface of Large Ring Parts

某公司制造的大型环件,粗加工后表面发现孔洞类缺陷,对其进行解剖分析。结果表明,大型环件表面孔洞类缺陷系环件内部大量孔洞缺陷外漏所致,环件内部缺陷系低温冷锻造成。

A large-scale ring manufactured by a company has defects of holes found on the surface after rough machining,and anatomical analysis has been performed on it.The results show that the surface holes defects of large ring parts have been caused by the leakage of a large number of holes inside the ring parts,and the internal defects of the ring parts have been caused by cold forging at low temperature.