输气管线用X70钢焊接工艺研究  

Study on Welding Technology of X70 Steel Used for Natural Gas Pipeline

作　　者：张玉芝[1] 谭永东[1] 吕向阳[1] 

机构地区：[1]中国石油天然气集团公司管道焊接培训中心,河北廊坊065000

出　　处：《管道技术与设备》2005年第2期21-22,共2页Pipeline Technique and Equipment

摘　　要：针对X70管线钢进行了焊接性分析,确定其预热温度。通过合理的接头设计,恰当的焊接工艺参数,来控制焊接热输入,确保接头的性能,并依据API110 4标准对所制定的焊接工艺进行评定,取得了满意的效果。通过此工艺施工的焊接接头具有较高的安全性。Analyzed the weldabilit y of X70 pipeline steel,determined the p re-heating temperature to prevent delaye d crack,assured the capability of weldin g joint through choosing excellent joint design and welding parameters.Then,made the visual examination and x-ray test a nd destructive test according to API1104 standard after finishing welding,every item results meet the requirements of th e relevant standards.The welding Joints are very safe.

关 键 词：焊丝 预热 下向焊 

分 类 号：TE83[石油与天然气工程—油气储运工程]