焊条原始状态对焊缝金属中扩散氢含量的影响  

Impact of electrode primitive state on diffusible hydrogen content in the weld metal

作　　者：黄景鹏[1] 徐学利[1] 郑梗梗 罗立辉[1] HUANG Jingpeng XU Xueli ZHENG Genggeng LUO Lihui(School of Materials Science and Engineering, Xi＇ an Shiyou University, Xi＇ an 710065, China)

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065

出　　处：《电焊机》2017年第1期116-119,共4页Electric Welding Machine

基　　金：西安石油大学<材料科学与工程>省级优势学科资助项目(ys37020203)

摘　　要：选用E5015、E8515和E9018三种焊条,分别在常温、200℃×1 h,400℃×1 h三种烘焙温度下分析研究焊缝金属中扩散氢含量。结果表明:随着焊条烘焙温度的升高以及熔敷金属抗拉强度的增大,焊缝金属中扩散氢的含量逐渐减少;常温状态下的焊条其焊缝中马氏体和上贝氏体比烘焙条件下的多;E5015焊条和E8515焊条,其焊缝中板条状铁素体多于E9018焊条,而粒状贝氏体少于E9018焊条。By choosing E5015,E8515 and E9018 three electrodes at three baking temperature, such as room temperature, at 200℃ for 1h,at 400℃ for 1 h respectively,diffusible hydrogen content in weld metal are analyzed. The results show that with the increase of electrode baking temperature and tensile strength of deposited metal,the content of diffusible hydrogen in weld metal gradually reduces; under the normal temperature state of electrode in the weld on martensite and upper bainite are more than baking conditions;E5015 electrode and E8515 electrode, the weld than E9018 electrode medium plate strip ferrite in the weld, and granular bainite than in less E9018 electrode weld.

关 键 词：低合金钢 碱性焊条 烘焙温度 熔敷金属 扩散氢 

分 类 号：TG422.1[金属学及工艺—焊接]