理化检验-物理分册2024，Vol.60Issue(4)：57-59,64,4.DOI:10.11973/lhjy-wl202404014
304不锈钢扁圆头方颈螺栓断裂原因
Fracture reason of flat round head square neck bolt of 304 stainless steel
庄翠芬 1沈家民 1陈晓春 1李帅 1江华生2
作者信息
- 1. 浙江东明不锈钢制品股份有限公司,嘉兴 314000
- 2. 浙江东明不锈钢制品股份有限公司,嘉兴 314000||嘉兴南湖学院机电工程学院,嘉兴 314001
- 折叠
摘要
Abstract
The flat round head square neck bolt of 304 stainless steel fractured during the second fastening process.The causes of bolt fracture were analyzed by means of macroscopic observation,chemical composition analysis,fracture analysis,metallographic examination,metal streamline detection,coloring penetration test and mechanical property test.The results show that there were no abnormalities in the microstructure,non-metallic inclusions,metal streamlines and internal cracks of the bolt samples,and the chemical composition analysis and tensile strength test results met the requirements of the corresponding standards.The fracture morphology showed obvious cleavage fracture characteristics.The fracture property of the bolt was brittle overload fracture,and the fracture reason was that there was stress concentration in the initial area of the head fracture.关键词
扁圆头方颈螺栓/脆性过载断裂/应力集中/金属流线Key words
flat round head square neck bolt/brittle overload fracture/stress concentration/metal streamline分类
矿业与冶金引用本文复制引用
庄翠芬,沈家民,陈晓春,李帅,江华生..304不锈钢扁圆头方颈螺栓断裂原因[J].理化检验-物理分册,2024,60(4):57-59,64,4.
