X65Q钢级管线管焊接缺陷的成因分析

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英文篇名：Cause Analysis on Weld Defects for X65Q Steel Grade Line Pipe 作者：丰小冬 ; 贺景春 ; 康利明 英文作者：Feng Xiao-dong;He Jing-chun;Kang Li-ming;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.; 关键词：X65Q钢级 ; 管线管 ; 焊缝 ; 显微裂纹 ; 缩孔 ; 凝固过程 英文关键词：X65Q steel grade;;linepipe;;welding seam;;microcrack;;contraction cavities;;solidification process 中文刊名：BGKJ 英文刊名：Science & Technology of Baotou Steel 机构：内蒙古包钢钢联股份有限公司技术中心; 出版日期：2019-04-25 出版单位：包钢科技 年：2019 期：v.45;No.194 语种：中文; 页：BGKJ201902017 页数：4 CN：02 ISSN：15-1210/TF 分类号：54-57

摘要

在X65Q钢级管线管的焊接过程中,焊缝出现显微裂纹和缩孔缺陷,为此,对管体的化学成分和显微组织进行了检测,并对焊缝的凝固过程进行了分析。分析表明,焊接线能量强度偏高和焊后冷却强度偏低是产生上述焊接缺陷的主要原因,在此基础上,提出相应的改进措施。
        In the welding process for X65Q steel grade line pipe,there were such defects as microcrack and contraction cavities in the weld joint,so the chemical composition and microstructure of tube body were tested as well as the solidification process of weld joint was analyzed. The results indicated that the higher energy intensity of weld line and the lower cooling intensity after welding were the main causes for the above welding defects. Based on this,the corresponding improvement measures are proposed.

引文

[1]毕宗岳,李超,刘志军.管线钢管焊接技术[M].北京:石油工业出版社,2013.
    [2]王久彬,潘秀兰,张富强.连铸坯的凝固传输现象[M].沈阳:辽宁科学技术出版社,1999.
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