The weldability of dissimilar three-steel sheet using constant power control method for resistance spot welding

2016 ◽  
Vol 230 (5) ◽  
pp. 959-967
Author(s):  
Junghyun Shim ◽  
Mohd Faridh ◽  
Jiyoung Yu ◽  
Sehun Rhee
Keyword(s):  
Power Control ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Sheet ◽  
Control Method ◽  
Constant Power ◽  
Resistance Spot

Dissimilar resistance spot welding of AISI 304 to AISI 409 stainless steels: mechanical properties and microstructural evolutions

2018 ◽  
Vol 115 (6) ◽  
pp. 610 ◽  
Author(s):  
Mehdi Safari ◽  
Hossein Mostaan ◽  
Abdoreza Ghaderi
Keyword(s):  
Stainless Steels ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Sheet ◽  
Welding Current ◽  
Stainless Steel Sheet ◽  
Tensile Shear ◽  
Aisi 304 ◽  
Resistance Spot ◽  
Electrode Force

In this work, dissimilar resistance spot welding of austenitic stainless steel sheet (304 grade) and ferritic stainless steel sheet (409 grade) is studied experimentally. For this purpose, the effects of process parameters such as welding current, welding time and electrode force on tensile-shear strength of resistance spot welded joints are investigated with response surface methodology (RSM). Also, microstructural evolutions during resistance spot welding process of AISI 409 and AISI 304 stainless steels are evaluated by optical microscopy. It is concluded from results that the tensile-shear strength of spot welds is increased with increasing the welding current, welding time and electrode force. It is shown that widmanstatten ferrites have been grown in the weld metal of dissimilar resistance spot welds of AISI 304 and AISI 409 stainless steels.

Application of Current Gain Compensation Method in Quality Control of Resistance Spot Welding of Galvanized Steel Plate

2010 ◽  
Vol 26-28 ◽  
pp. 401-404
Author(s):  
Bin Wan ◽  
Xin Bin Hu ◽  
Shi Jie Dong ◽  
Zhong Hou Liu ◽  
Mao Zhang ◽  
...  
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Steel Plate ◽  
Control Method ◽  
Galvanized Steel ◽  
Current Gain ◽  
Current Step ◽  
Resistance Spot ◽  
Welding Spot ◽  
Gain Compensation

In this paper, the control method of current gain compensation for welding is adopted. Precise current gain curves (i.e., current step curves) in resistance spot welding of galvanized steel plated are discussed and drawn. By analysis of failure of electrode cap, it indicates that new current step curve ensure that qualified welding spot nugget dimension is acquired. The welding spot is high in strength, stable and reliable in quality. It is superior to original current step curve.

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