高温焊接对2.25Cr1Mo钢焊接残余应力的影响
Effect of High Temperature Welding on Welding Residual Stress of 2.25Cr1Mo Steel
张智超1， 张国福1， 杨 军2
点击：3436次 下载：0次
作者单位：1.辽宁石油化工大学 机械工程学院，辽宁 抚顺 113001；2.中国石油四川石化有限责任公司 商务部，四川 成都 610036
中文关键字：高温焊接； 焊接残余应力； 加热温度； 小盲孔法
英文关键字：high temperature welding; welding residual stress; heating temperature; small blind-hole
中文摘要：对2.25Cr1Mo钢试板分别在室温下进行焊接，焊后自然冷却（正常焊接），及加热到750、850 ℃进行焊接并且焊接过程中始终保持高温不变，焊后自然冷却（高温焊接），采用小盲孔法测量其焊接残余应力。结果表明，高温焊接能够有效地降低焊接残余应力，并且高温焊接温度越高，焊接残余应力降低效果越好。
英文摘要： 2.25Cr1Mo steel test plate was welded at room temperature and then was cooled by natural cooling after welding; test plate was also welded at 750 ℃, 850 ℃, respectively, and remain this temperature during welding, then was cooled by natural cooling after welding. The welding residual stress was measured by small blind hole method. The results show that high temperature welding can (750 ℃, 850 ℃) effectively reduce the welding residual stress, the higher the soldering temperatures, the less the welding residual stress.