焊管2017，Vol.40Issue(11)：52-54,3.DOI:10.19291/j.cnki.1001-3938.2017.11.011
X70M HFW焊管液压胀环法和平板拉伸法试验对比分析
Contrastive Analysis on Hydraulic Ring Expansion Test Method and Flat Tensile Test Method for X70M HFW Pipe
摘要
Abstract
In order to accurately measure the true yield strength of full body of HFW pipe, hydraulic ring expansion equipment was designed and manufactured, and yield strength of 4 specifications X70M HFW welded pipe was measured and compared with the results measured by Flatten Bar test method(FB). The results showed that no matter using which methods, the higher the diameter-thickness ratio, the higher the yield strength of HFW pipe and the yield ratio; the yield strength measured by Hydraulic Ring Expansion test method(RE)was 15~30 MPa higher than these measured by FB;when the strain was less than 1%,stress measured by RE was higher than these measured by FB.关键词
HFW焊管/屈服强度/液压胀环拉伸/平板拉伸Key words
HFW pipe/yield strength/hydraulic ring expansion test/flatten bar test分类
矿业与冶金引用本文复制引用
屈献永,胡松林,张曙华..X70M HFW焊管液压胀环法和平板拉伸法试验对比分析[J].焊管,2017,40(11):52-54,3.
