柱塞剥落掉块与材料显微组织关系的初步分析

The Analysis about Microstructure of Plunger Materials and Plunger Parts Failure

本文对柱塞零件剥落掉块进行了试验分析,结果表明:柱塞失效属于接触疲劳损伤,损伤柱塞与国外柱塞比较,在材料的显微组织、碳化物数量、大小、形态、分布等方面均存在一定差异。

A study has been made of the microstructure and failure feature by plunger parts. The results show that the failure property of plunger parts belongs to contact-fatigue. There are the differences in microstructure of failure plunger materials and foreign plunger matarials and in amount, size, morphology and distribution of carbides in them. The reference proof is provided for gain the used life of plunger parts.