Q345R/316L复合板双面焊接工艺优化及其接头性能研究  

Double-sided Welding Procedure Optimization of Q345R/316L Clad Plate and Its Welded Joint Properties Research

作　　者：王凤会[1] 刘立伟[1] 陈延清[1] 许静[1] 刘宏[1] 齐建[1] 

机构地区：[1]首钢技术研究院,北京100043

出　　处：《焊管》2016年第3期20-24,30,共6页Welded Pipe and Tube

摘　　要：为了研究(13+3)mm厚Q345R/316L复合板的焊接性及对其接头变形的控制,试验选用3种焊条进行了焊接工艺的优化研究。研究发现,复合板对接焊采用非对称X形坡口时,试板焊后的变形量小于对称X形坡口的焊接试板。研究通过拉伸、冲击、弯曲、硬度、抗剪切试验评价了该复合板焊接接头的力学性能;通过晶间腐蚀试验评价了复合板不锈钢侧焊接接头焊缝区的抗晶间腐蚀性能。结果表明,Q345R/316L复合板焊接接头力学性能及其不锈钢侧焊缝的抗晶间腐蚀性能都达到技术标准要求,能够很好地满足用户的使用要求。In order to research the weldability of Q345R/316L clad plate with （13＋3） mm thickness and the deformation control of its welded joint, three welding electrodes were selected to carry out the welding procedure optimization. The study found that the deformation of welded plate with asymmetrical X-groove was less than plate with symmetrical X-groove after welding. The mechanical performance of welded joint was analyzed by using tensile test, impact test, bending test, hardness test and shear test. lntergranular corrosion test was adopted to evaluate the intercrystalline corrosion resistance of the stainless steel welding. The results showed that the mechanical property and intergranular corrosion resistance meet the requirements of the relevant technical standards and demands of the users.

关 键 词：焊接 复合板 Q345R/316L 焊接接头 焊接变形 抗晶间腐蚀 

分 类 号：TG407[金属学及工艺—焊接]