Resistance Spot Welding Process of Galvanized Steel Sheet Based on Regression Modeling
The resistance spot welding process of galvanized steel sheet used in the body manufacturing of family car was studied, and the indexes of nugget geometry and tensile-shear strength of spot welds were tested. Four process parameters, namely welding current, electrode force, welding current duration and preheat current, and interactions among them were regarded as factors impacting indexes. Method using in mathematical models developing was nonlinear multiple orthogonal regression assembling design, which was optimized by the technology of variance analysis. The experimental results showed that more accurate prediction on nugget size and mechanical properties of spot welds can be obtained by the models optimized. With these prediction results, the optimization of welding process also was realized by the analysis to effect of the parameters and interactions on the welding quality.
Galvanized Steel Sheet Spot Welding Regression Model Nugget Diameter Tensile-shear Strength
Yi LUO Hong YE Chengzhi XIONG Lin LIU Xuwei LV
School of Material Science and Engineering, Chongqing Institute of Technology,Chongqing 400050, Chin School of Material Science and Engineering, Chongqing Institute of Technology,Chongqing 400050, Chin
国际会议
重庆
英文
681-686
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）