Optimization of Parameters and Research on Joint Microstructure of Resistance Spot Welding of 201 Stainless Steel

Abstract:

The experimental investigations on resistance spot welding of 201 stainless steel are presented. Experiments are carried out to study the influence of spot welding parameters (electrode force, welding current and welding time) on the tensile shear load and the diameter of nugget, based on an orthogonal test and analysis method. The optimum parameters are as follows: electrode force is 3600N, welding current is 6400A and welding time is 8 cycles. The maximum tensile shear force is up to 8920N.The microstructure of spot weld is columnar crystals in the nugget and equiaxed grains around periphery induced by non-equilibrium freezing. And the heat input has great influence on the welding defects which can cause joint quality degradation.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 1359-1363
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.1359
• Online since: December 2011
• Authors: Hui Liu, Hai Dong Wang, Xiao Qing Zhang, Cai Wen Li
• Keywords: 201 Stainless Steel, Microstructure, Orthogonal Test and Analysis, Spot Welding

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