25CrNiMo钢埋弧焊接头热影响区硬度分析  

Hardness Analysis of Heat Affected Zone of 25CrNiMo Steel Submerged Arc Welding Joint

作　　者：刘荣跃[1,2] Liu Rongyue

机构地区：[1]河北华北石油荣盛机械制造有限公司,河北任丘062552 [2]河北省井控及井口设备技术创新中心,河北任丘062552

出　　处：《机械制造》2023年第1期41-44,共4页Machinery

摘　　要：基于不同的焊前预热温度,对25CrNiMo钢进行埋弧焊试验,分析接头热影响区的硬度。通过试验确认,采用240℃焊前预热温度,可以对接头热影响区硬度进行有效控制,能够满足25CrNiMo钢埋弧焊接头在耐酸性工作环境中的使用要求。Based on different pre-welding preheating temperatures,the submerged arc welding test of 25CrNiMo steel was carried out to analyze the hardness of the heat affected zone of the joint.Through the test,it is confirmed that the preheating temperature before welding of 240 C can effectively control the hardness of the heat affected zone of the joint,which can meet the requirements of the submerged arc welding joint of 25CrNiMo steel in the acid-resistant working environment.

关 键 词：钢 埋弧焊 接头 硬度分析 

分 类 号：TG445[金属学及工艺—焊接] TH142[一般工业技术—材料科学与工程]