电焊机2017，Vol.47Issue(4)：94-97,4.DOI:10.7512/j.issn.1001-2303.2017.04.20
螺母凸焊焊点断口形貌分析
Analysis of fracture morphology of projection welding weld for nut
易明辉 1余进 2罗滏 2余群锋 1刘超 2严恺2
作者信息
- 1. 南京威迩德汽车零部件有限公司,江苏南京211100
- 2. 南京理工大学材料科学与工程学院,江苏南京210094
- 折叠
摘要
Abstract
In this paper,the fracture modes of projection welding weld of both conventional nut 10B21 and galvanized steel sheets are analyzed.After destructive test,through observing the weld's fracture morphology by SEM and considering its internal microstructure,it is found that there are two kinds of weld fracture modes of projection welding weld for nut:Brittle fracture in fusion zone and mixed fracture of brittle fracture and ductile fracture in sheet HAZ.Theoretical analysis and practical experience reveals that fracture shows some toughness when fracture occurs in sheet HAZ,and this fracture mode is safer for nut projection welding.关键词
螺母/凸焊焊点/SEM/断口形貌Key words
nut/projection welding weld/SEM/fracture morphology分类
矿业与冶金引用本文复制引用
易明辉,余进,罗滏,余群锋,刘超,严恺..螺母凸焊焊点断口形貌分析[J].电焊机,2017,47(4):94-97,4.
