摘要
研究镍基高温合金GH3128表面上堆焊形貌并优化焊接工艺参数,为后续对焊和堆焊修复打下基础。采用通用旋转组合设计试验方案,基于响应面法建立了GH3128合金上MIG堆焊时焊接速度、送丝速度、焊枪角度与余高、稀释率之间的数学模型并对模型进行了验证分析。基于模型,分析了各个工艺参数对稀释率和余高的影响,并对焊接工艺参数进行了优化。研究结果表明:余高随着送丝速度的增加而增大,随着焊接速度的增大而降低,焊枪角度对余高的影响最小。稀释率受焊枪角度、焊接速度、送丝速度的影响依次减小。
The surfacing morphology on surface of nickel-based superalloy GH3128 was studied and the optimization of welding process parameters was carried out to lay the foundation for subsequent butt welding and surfacing repair.Based on the response surface method,the mathematical model between welding speed,wire feeding speed,welding gun angle of MIG welding on GH3128 and residual height,dilution rate was established by using the universal rotating combination design test scheme.The model was verified and analyzed.Based on the model,the effects of various process parameters on dilution rate and residual height were analyzed,and the welding process parameters were optimized.The results show that the residual height increases with the increase of wire feeding speed,and decreases with the increase of welding speed.The influence of welding angle on the residual height is the smallest.The effect of welding torch angle,welding speed and wire feeding speed on dilution rate decreases in turn.
作者
刘拥军
郭占英
方海鹏
LIU Yongjun;GUO Zhanying;FANG Haipeng(School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《热加工工艺》
北大核心
2020年第15期114-118,共5页
Hot Working Technology
关键词
GH3128镍基合金
MIG堆焊
响应面法
参数优化
GH3128 nickel base alloy
MIG surfacing
response surface methodology(RSM)
parameter optimization
作者简介
刘拥军(1979-),男,四川成都人,讲师,博士,主要研究镍基合金焊接以及焊接设备自动化,E-mail:swjtuliuyongjun@163.com;通讯作者:郭占英(1993-),男,硕士,研究方向:镍基合金的焊接性能及焊接设备自动化,E-mail:pusteblume@yeah.net。
