Weld Characteristics and NC Bending Formability of QSTE340 Welded Tube

The mechanical characteristics of the weld joint were investigated by tensile test, microstructure test, and microhardness test. The welded tube NC bending tests were carried out to evaluate the weld on the formability of the QSTE340 welded tube. The results show that the wall thinning degree, cross...

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Published inTransactions of Tianjin University Vol. 17; no. 4; pp. 288 - 292
Main Author 任宁 詹梅 杨合 秦亚涛 张志勇 蒋浩民 刁可山 陈新平
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University 01.08.2011
Subjects
Engineering
Humanities and Social Sciences
Mechanical Engineering
multidisciplinary
Science
成形性
拉伸试验
数控弯曲
机械特性
焊接特性
焊接线
焊管生产
硬度测试
formability
weld characteristic
NC bending
welded tube
Online AccessGet full text
ISSN1006-4982
1995-8196
DOI10.1007/s12209-011-1642-0

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Summary:The mechanical characteristics of the weld joint were investigated by tensile test, microstructure test, and microhardness test. The welded tube NC bending tests were carried out to evaluate the weld on the formability of the QSTE340 welded tube. The results show that the wall thinning degree, cross-sectional deformation and springback angle increase significantly as the weld line is located on the outside of the bend compared with that located on the middle and inside, and the welded tubes produce nearly identical performance as the weld line is located on the middle and inside. The wall thickening degree decreases much as the weld line is located on the inside of the bend. So the welded tube can acquire good bending formability as the weld line is located in the region away from the outside of the bend.
Bibliography:The mechanical characteristics of the weld joint were investigated by tensile test, microstructure test, and microhardness test. The welded tube NC bending tests were carried out to evaluate the weld on the formability of the QSTE340 welded tube. The results show that the wall thinning degree, cross-sectional deformation and springback angle increase significantly as the weld line is located on the outside of the bend compared with that located on the middle and inside, and the welded tubes produce nearly identical performance as the weld line is located on the middle and inside. The wall thickening degree decreases much as the weld line is located on the inside of the bend. So the welded tube can acquire good bending formability as the weld line is located in the region away from the outside of the bend.
REN Ning , ZHAN Mei , YANG He , QIN Yatao, ZHANG Zhiyong , JIANG Haomin , DIAO Keshan , CHEN Xinping （ I. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China; 2. Baosteel Group Corporation, Shanghai 201900, China）
12-1248/T
weld characteristic; NC bending; formability; welded tube
ISSN:1006-4982
1995-8196
DOI:10.1007/s12209-011-1642-0