预热温度对X80管线钢焊接性的影响研究  

Study on the Influence of Preheating Temperature on the Weldability of Pipeline Steel X80

作　　者：田万鹏 TIAN Wan-peng(Hunan Automotive Engineering Vocational College, Zhuzhou,412000, P.R. China)

机构地区：[1]湖南汽车工程职业学院,湖南株洲412000

出　　处：《南方金属》2020年第6期5-7,16,共4页Southern Metals

基　　金：湖南省教育厅科学研究项目(17C0371)。

摘　　要：不同预热温度下,采用插销试验法测定了X80管线钢的临界断裂应力值,对焊接热影响区(HAZ)的硬度进行了测定,采用金相显微镜观察了在不同预热温度下HAZ的金相组织情况。研究结果能为优化焊接工艺参数提供一定的理论参考价值。The critical fracture stress of pipeline steel X80 was measured at different preheating temperatures by implant test method,the hardness of HAZ was measured,and the metallographic structure of HAZ was observed by metallographic microscope.The research results can provide certain theoretical reference value for the optimization of welding parameters.

关 键 词：X80管线钢 焊接性 预热温度 插销试验 

分 类 号：TG406[金属学及工艺—焊接]