Influence of the pulsed current pattern on cross-tension strength of spot-welded joint with nugget diameter variation. Development of resistance spot welding with a pulsed current pattern for ultra-high-strength steel sheets

2019 ◽  
Vol 33 (4-6) ◽  
pp. 211-222
Author(s):  
Koichi Taniguchi ◽  
Hiroshi Matsuda ◽  
Rinsei Ikeda
Keyword(s):  
Spot Welding ◽  
Welded Joint ◽  
High Strength ◽  
Pulsed Current ◽  
Current Pattern ◽  
Steel Sheets ◽  
Development Of Resistance ◽  
Ultra High Strength Steel ◽  
Cross Tension ◽  
Tension Strength

Resistance Spot Weldability of Hot-Formed Ultra High Strength Steel Based on Virtual and Physical Experiment

2015 ◽  
Vol 750 ◽  
pp. 244-250 ◽  
Author(s):  
Zhi Shui Yu ◽  
Wan Peng Dong ◽  
Chun Wei Ma ◽  
Jiang Wei Ren ◽  
Bi Hao Li ◽  
...  
Keyword(s):  
Spot Welding ◽  
High Strength Steels ◽  
High Strength ◽  
Experimental Investigations ◽  
Tensile Shear ◽  
Resistance Spot ◽  
Ultra High Strength Steel ◽  
Ultra High Strength Steels ◽  
Cross Tension ◽  
Good Agreement

In this study, virtual and physical experimental investigations were performed on the resistance spot weldability of hot-formed ultra high strength steels (UHSS). The sheets were joined by the resistance spot welding as lap or cross joint. The mechanical properties were assessed in terms of cross tension strength (CTS) and tensile shear strength (TSS). The micro structural profile and weld nugget diameter were also investigated. Both virtual and physical methods yielding results are in good agreement. The results are discussed in the light of earlier work published in the literature and contribute to a better understanding on the evaluation of resistance spot weldability.

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