【作者】 周晓霞； 刘正义；

【Author】 Zhou Xiaoxia (Guangzhou Refrigeration Co. Ltd) Liu Zhenyi (South China University Of Technology)

【机构】 广州冷机股份有限公司； 华南理工大学；

【摘要】 对低碳WBY热轧钢板的冰箱压缩机下壳壳体密封之后通过水槽检查,发生泄漏,泄漏原因是因为在壳壁上冲孔时发生裂纹,对裂纹周围的金相、断面、晶界进行分析探讨,结果表明,残存第二相(夹杂TiC、FeC)沿晶分布,引起冲孔裂纹。更多还原

【Abstract】 Leaking is analyzed of lower-shells of hot-rolled mild steel sheets by means of SEM, TEM etc. The results show that the distribution of carbonic of Ti and Fe along crystal boundary results in intercrystalline cracks when forging a hole in the lower-shell, which is the main reason why the leaking of the lower-shells happens after they have been sealed up and inflated with gas.更多还原