测力扳手弹性元件的失效分析  

FAILURE ANALYSIS OF ELASTICITY COMPONENT ABOUT TORQUE SPANNER

作　　者：杨桂珠[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900

出　　处：《理化检验（物理分册）》2004年第7期360-362,376,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用化学成分分析和显微组织检测方法,对造成弹性元件不合格的原因进行了分析。结果表明,弹性元件不合格的原因在于原材料中存在超标的非金属夹杂物和带状偏析,以及由于热处理工艺不当而产生的微裂纹、表面严重脱碳和心部铁素体。Through chemical composition analysis and metallographic examination the factors have been explored to unqualify the torque spanner .The results show that the reasons are in two aspects: some non-metallic inclusions and banded segregations beyond requirement in the raw materials, and microcracks, serious surface decarbonization and inner ferrites due to improper heat treatment process. After some improvement measures are taken, better effects have been achieved to guarantee the quality of the product.

关 键 词：非金属夹杂物 带状偏析 热处理缺陷 回零试验 

分 类 号：TH703.1[机械工程—仪器科学与技术]