scholarly journals Application of resistance spot welding in car body production

2015 ◽  
Vol 19 (2) ◽  
pp. 28-34
Author(s):  
Emil Spišák ◽  
Ľuboš Kaščák ◽  
Ján Viňáš
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Car Body ◽  
Resistance Spot ◽  
Body Production

scholarly journals Joining three car body steel sheets by clinching method

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Jana Majerníková
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Material Structure ◽  
Car Body ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Alternative Method ◽  
Metallographic Observation ◽  
Body Production

Abstract The optimization of a car body in terms of cost can be achieved by using different materials in various positions of the car in order to utilize specific properties of each different material. Resistance spot welding is the most used method of joining in car body production, but it is not always easy or even possible to join some combination of materials by this method. Clinching is an alternative method to spot welding, as a combination of drawing and forming. The research is focused on the evaluation of clinched joints’ properties using shearing test and metallographic observation of material structure.

Clinching of Dual-Phase Steels as an Alternative to Resistance Spot Welding

2018 ◽  
Vol 919 ◽  
pp. 68-77
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Janka Majerníková ◽  
René Kubík
Keyword(s):  
Bearing Capacity ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Dual Phase ◽  
Load Bearing Capacity ◽  
Dual Phase Steels ◽  
Load Bearing ◽  
Car Body ◽  
Resistance Spot ◽  
Body Production

Resistance spot welding is the dominant method for joining the materials in the car body production. Progressive materials are being developed to improve the car’s fuel consumption and the safety of passengers as well. Advanced high strength dual-phase steels are such materials. Despite of the dominancy of resistance spot welding in car body production, innovative methods are being developed to reduce the joining time, process costs and improve the load-bearing capacity of a particular joint. Mechanical clinching is such process. The research focused on the evaluation of the possibility of clinching as an alternative method to the resistance spot welding. Experimental samples were prepared from dual-phase steel sheets DP600. The samples were tested by uniaxial tensile test, microhardness test and metallographic observations. Both joining methods have advantages and disadvantages which could destine them for specific utilization. Clinching joining is a progressive, fast and low-cost technique, but the joint’s load-bearing capacity is lower when compared to resistance spot weld.

Clinching - An Innovative Trend in Joining of Combined Materials in Car Body Production

2015 ◽  
Vol 818 ◽  
pp. 217-220 ◽  
Author(s):  
Luboš Kaščák ◽  
Emil Spišák ◽  
Emília Spišáková ◽  
Ivan Gajdoš
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Dual Phase Steel ◽  
High Strength ◽  
Car Body ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Joint Properties ◽  
Body Production ◽  
Grade Steel

Various ferrous and non-ferrous materials and their combinations are used in car body production in automotive industry. The most commonly used method for joining the materials is resistance spot welding. Some materials or combinations of materials are very difficult or impossible to join by resistance spot welding. Therefore, car producers are seeking for alternative joining methods. One of the innovative joining alternatives is clinching. The paper presents the results of evaluation of clinched joint properties. The high-strength dual-phase steel sheet DP600 in combination with the drawing grade steel sheets DC06, DX53D+Z and DX51D+Z were used for experiments. The influence of position of the sheets relative to the punch and die of the tool on the carrying capacities of the clinched joints was observed as well. The tension test and metallographical analysis were used for the evaluation of clinched joint properties.

Aluminum/Steel Resistance Spot Welding Process for Multi-material Car Body

2021 ◽  
Vol 90 (7) ◽  
pp. 497-500
Author(s):  
Kojiro TANAKA ◽  
Mitsugi FUKAHORI ◽  
Katsuya NISHIGUCHI
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Process ◽  
Car Body ◽  
Resistance Spot

scholarly journals CLINCHRIVET AS AN ALTERNATIVE METHOD TO RESISTANCE SPOT WELDING

2013 ◽  
Vol 7 (2) ◽  
pp. 79-82 ◽  
Author(s):  
Ľuboš Kaščák ◽  
Emil Spišák ◽  
Jacek Mucha
Keyword(s):  
Tensile Test ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Flat Punch ◽  
Mechanical Joining ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Alternative Method ◽  
Joint Properties ◽  
Body Production

Abstract Various materials are used in car body production which are not always possible to join by conventional joining methods such as resistance spot welding. Therefore ClinchRivet method seem to be possible alternative. The paper deals with evaluation of properties of the joints made by mechanical joining method - ClinchRivet. The joint is made with the using of a special rivet, which is pushed into the joined materials by the flat punch. Following materials were used for joining of this method: DX51D+Z and H220PD steel sheets. The tensile test for observing the carrying capacities and metallographicall analysis were used for the evaluation of joint properties. Some results of the tests of ClinchRivet joints were compared to the properties of the joints made by resistance spot welding.

Evaluation of Corrosion Resistance of Galvanized Steel Sheets Used in Automotive Production

2015 ◽  
Vol 818 ◽  
pp. 141-144
Author(s):  
Luboš Kaščák ◽  
Janette Brezinová ◽  
Jacek Mucha
Keyword(s):  
Corrosion Resistance ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Zinc Coating ◽  
High Rate ◽  
Galvanized Steel ◽  
Electrochemical Characteristics ◽  
Resistance Spot ◽  
Steel Sheets ◽  
Body Production

The steel sheets used for the car body production are protected against corrosion by zinc coating. Resistance spot welding is used mainly for joining these sheets, because of its high speed and adaptability for automation in high-rate production. However, resistance spot welding has a negative influence on the corrosion resistance of joints. The paper focuses on the analysis of quality of welds on galvanized steel sheets and their corrosive properties. Tensile test and accelerated corrosion test in corrosive environment were used for evaluation of the welds’ quality. Protective efficiency of zinc coatings for automobile sheets was evaluated as well, based on the determination of their electrochemical characteristics in passivated and non-passivated state, as well as their corrosion resistance in simulated corrosion environments. Two types of DX54D+Z material were used for experiments: non-passivated and passivated with Cr3+.

scholarly journals Effect of Welding Current on Weld Formation, Microstructure, and Mechanical Properties in Resistance Spot Welding of CR590T/340Y Galvanized Dual Phase Steel

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2310 ◽  
Author(s):  
Xinge Zhang ◽  
Fubin Yao ◽  
Zhenan Ren ◽  
Haiyan Yu
Keyword(s):  
Mechanical Properties ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Dual Phase Steel ◽  
Welding Current ◽  
Dual Phase ◽  
Weld Formation ◽  
Resistance Spot ◽  
Microstructure And Mechanical Properties ◽  
Body Production

During resistance spot welding, the welding current is the most important process parameter, which determines the welding heat input and then has a great influence on the welding quality. In present study, the CR590T/340YDP galvanized dual phase steel widely used as automobile material was carried out using resistance spot welding. The effect of welding current on the weld formation, microstructure, and mechanical properties was studied in detail. It was found that the quality of weld appearance decreased with the increase of welding current, and there was a Zn island on the weld surface. The microstructure of the whole resistance spot welded joint was inhomogeneity. The nugget zone consisted of coarse lath martensite and a little of ferrite with the columnar crystal morphology, and the microstructure of weld nugget became coarser when the welding current was higher. There was an optimum welding current value and the tensile strength reached the maximum. This investigation will provide the process guidance for automobile body production.

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