焊管2016，Vol.39Issue(8)：64-68,5.DOI:10.19291/j.cnki.1001-3938.2016.08.015
直缝埋弧焊管焊偏测量方法探讨
Determining Method of Weld Misalignment of Longitudinal Submerged Arc Welding Steel Pipe
罗华权 1陈晓丽 2曹峰 1宋娟 1杨力能1
作者信息
- 1. 中国石油集团石油管工程技术研究院，西安 710077
- 2. 长庆油田分公司苏里格气田研究中心，西安 710018
- 折叠
摘要
Abstract
The definition of welding misalignment was analyzed, the advantages and disadvantages of determining method of longitudinal submerged arc welding steel pipe weld misalignment were compared. The relevant requirements for welding misalignment in the relevant standards at home and abroad were listed and analyzed. The results showed that the definition of welding misalignment in API standard and the oil industry standard is a rough summary and the method of measurement is not clear. It has the advantages and disadvantages of the determining method of weld misalignment by using the weld toe center line method, the weld arc vertex distance method, the ridge line bead method and the X-ray test method, and they are difficult to accurately reflect the actual offset. It is recommended that using the weld fusion zone center line method to determine weld misalignment because it is more unique and accurate. In the case of larger diameter of pipe, the outside weld toe line or the center line of the wall thickness is recommended to be the parallel line of the steel pipe tangent line, and it would be more operability and uniqueness for the weld fusion zone center line method. The weld fusion zone center line method is recommended to determine weld misalignment for GB/T 9711—2011. The limited standard of welding misalignment in our nation is formulated on the basis of foreign standards of the same type and it is stricter in abroad in the application of major engineering projects.关键词
直缝埋弧焊/焊管/焊偏量/测定方法Key words
longitudinal submerged arc welding/welded pipe/weld misalignment/determining method分类
矿业与冶金引用本文复制引用
罗华权,陈晓丽,曹峰,宋娟,杨力能..直缝埋弧焊管焊偏测量方法探讨[J].焊管,2016,39(8):64-68,5.
