不锈钢管磁控高速TIG焊多元非线性回归模型  

Nonlinear multiple regression model of stainless steel tube magnetic control high-speed TIG welding

作　　者：路林[1,2] 常云龙[1] 李英民[1] 路明 杨旭[1] 

机构地区：[1]沈阳工业大学,沈阳110870 [2]哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001 [3]沈阳延锋江森坐椅有限责任公司,沈阳110180

出　　处：《焊接学报》2012年第6期93-96,117-118,共4页Transactions of The China Welding Institution

基　　金：现代焊接生产技术国家重点实验室开放课题研究基金资助项目(AWPT-M02);沈阳市重点科技基金资助项目(1071201-1-100和F10-205-1-47)

摘　　要：采用多元非线性回归正交组合的方法,对不锈钢焊管高速钨极氩弧焊不填充焊丝时外加横向磁场对焊接质量的影响进行试验研究.将焊缝抗拉强度与焊缝成形系数(熔宽/熔深)作为影响焊缝质量的主要考察指标.以磁场强度、氩气流量作为因素,并分析二者之间的相互制约关系.通过正交设计了9组试验,根据回归设计理论,建立二元二次非线性回归方程并进行了剩余标准差计算.结果表明,回归模型能够实现对焊接接头抗拉强度与焊缝成形系数的有效预测.并绘制了其三维视图,在模型的基础上研究磁场强度变化对焊缝质量的影响规律.In order to study the influence of high-speed argon tungsten-arc welding by transverse magnetic field on quality of stainless pipe welding joint,the test has been realized using multivariable nonlinear regression orthogonal combination method.The welding joint tensile strength and form factor of weld（the weld width/penetration） were considered as important assessment factors of weld quality.The magnetic field strength and argon flow were taken to be considered,and the relationship between them was then analyzed.Nine groups of testing were designed by orthogonal method,according to regression design theory, the binary quadratic nonlinear regression equation was established and the remaining standard deviation was calculated.The experimental results showed that regression models could realize the forecast of welding joint tensile strength and form factor of weld.Finally,the three-dimensional view was made and the influence of magnetic field strength changing regularity on weld quality was studied.

关 键 词：回归分析 横向磁场 高速焊 磁控 

分 类 号：TG444.2[金属学及工艺—焊接]