scholarly journals The Structure of the Welded Joints between High-Strength Steel USIBOR 22MnB5 and Mild Steel H340LAD+Z140-M-B-O Made by Resistance Spot Welding

2018 ◽  
Vol 25 (4) ◽  
Keyword(s):  
Mild Steel ◽  
Welded Joints ◽  
Resistance Spot Welding ◽  
High Strength Steel ◽  
Spot Welding ◽  
High Strength ◽  
Resistance Spot

scholarly journals JOINING THE COMBINATION OF AHSS STEEL AND HSLA STEEL BY RESISTANCE SPOT WELDING

2013 ◽  
Vol 7 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Ivan Gajdoš
Keyword(s):  
Fuel Consumption ◽  
Welded Joints ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
High Strength ◽  
Quality Analysis ◽  
Vehicle Body ◽  
Welding Parameters ◽  
Resistance Spot ◽  
Ahss Steel

Abstract The paper deals with the optimization of parameters of resistance spot welding and quality analysis of welded joints made by combination of galvanized Advanced High Strength Steel and High Strength Low Alloy steel. It is an advanced material combination utilized in automotive industry to reduce weight of the vehicle body and consequently lowering the fuel consumption to achieve the lowest possible fuel consumption, high active and passive safety of passengers while decreasing the amount of emission. The quality of welded joints was evaluated by destructive tests and non-destructive tests. The shear tensile test according to STN 05 1122 standard was used. Some samples were prepared for metallographic analysis, where the influence of the welding parameters on the structure of welded joint and occurrence of pores in the weld metal caused by evaporation of zinc from the coating was observed.

scholarly journals Fatigue Strength of High Strength Steel Sheets Joined by Hemming Process

2015 ◽  
Vol 773-774 ◽  
pp. 282-286 ◽  
Author(s):  
Zamzuri Hamedon ◽  
Ken Ichiro Mori ◽  
Yohei Abe
Keyword(s):  
Resistance Spot Welding ◽  
High Strength Steel ◽  
Spot Welding ◽  
High Strength ◽  
Fatigue Tests ◽  
The Body ◽  
Hollow Section ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Passenger Safety

It is strongly desirable for the vehicle to improve passenger safety and at the same time to reduce the weight of the vehicles. A hollow section for the body structure of automobiles is studied. A high strength steel sheet is used to make the hollow sections in this studied, which are typically joined by resistance spot welding have insufficient energy absorption because the joins are not continuous. Thus, to overcome this problem, the hollow section is joined using the hemming process. The high strength steel hollow sections joined by hemming and resistance spot welding were then examined by tensile and fatigue tests. The hollow section with hemmed joins showed better performance in both tests. The overlapping joins of the hemmed hollow section have greater strength as compared to the resistance of spot welding joins.

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