Development of a new program control setting of welding current and electrode force for single-side resistance spot welding

Matsushita, Muneo; Ikeda, Rinsei; Oi, Kenji

doi:10.1007/s40194-015-0228-1

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…Resistance spot welding (RSW) works on the principle of electrical resistance at the mating surfaces creating localised heating and fusion of materials under pressure when a high current passes through them [20][21][22]. Figure 4 provides a schematic illustration of resistance spot welding used for tab welding.…”

Section: Overview Of Joining Methodsmentioning

confidence: 99%

Weldability and shear strength feasibility study for automotive electric vehicle battery tab interconnects

Das

Williams

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Lithium-ion-based secondary battery packs are emerging as an alternative power source and are being increasingly used in electric vehicles, hybrid or plug-in hybrid electric vehicles. Typically, a standard automotive battery pack consists of hundreds, even thousands, of individual cells which are connected in series and/or parallel to deliver the required power and capacity. There is an increasing need for manufacturing of battery packs to meet the demand reflecting the uptake of these vehicles. This triggers the need for suitable joining methods which will provide mechanical strength on a par with electrical and thermal characteristics. This work focuses on characterisation of shear strength of battery tab-to-tab joints for both similar and dissimilar materials by using combinations of aluminium (Al) and nickel-coated copper (Cu[Ni]) tabs. The joining techniques with application for battery tab interconnects are ultrasonic metal welding, resistance spot welding and pulsed TIG spot welding. Lap shear and T-peel tests are performed to evaluate the joint strength. In general, lap shear strength is four to seven times higher than the T-peel strength obtained from all three joining methods. In addition, an indicator is developed in this paper based on lap shear-to-T-peel strength reduction ratio which provides additional information on joint strength characteristics, and subsequently, it can be used as a threshold by quality engineers for an indication on selection of joining methods having an acceptable strength reduction ratio.

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Section: Overview Of Joining Methodsmentioning

confidence: 99%

Weldability and shear strength feasibility study for automotive electric vehicle battery tab interconnects

Das

Williams

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…Other studies analysed electrode displacement [22], electrode force [23], and acoustics signals [24].…”

Section: Energy Evaluation In Resistance Spot Weldingmentioning

confidence: 99%

A new approach to reduce the carbon footprint in resistance spot welding by energy efficiency evaluation

Cunha

Gomes

Carvalho

2022

Int J Adv Manuf Technol

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Actions aiming to reduce energy consumption directly contribute to the reduction of manufacturing costs and carbon footprint while supporting manufacturing processes' productivity. Resistance spot welding is relevant in the automotive sector. Due to its operational characteristics, this process has high energy consumption. Despite this fact, few studies have found to guide solutions for its reduction. In this sense, this study proposes a method to improve the resistance spot welding process's energy performance without compromising its quality. This study applies statistical analysis (ANOVA) to support predictive models that characterize energy and quality performance. The statistical analyses confirmed and quantified the influence of the control factors in energy and quality performance indicators. The predictive models made it possible to anticipate energy consumption and quality behaviour from adjustments in the welding line process parameters studied in this paper. To fit the best compromise between energy consumption and quality, energy labels to classify the process's energy performance were proposed.The best compromise solution for the studied process parameter ranges in this work was: 𝐶 𝑤𝑒𝑙 : 8 kA, 𝑇 𝑤𝑒𝑙 : 8 cycles and 𝐹 𝑒𝑙𝑒 : 343 kgf. This parameter combination results in a consumption of approximately 2 Wh per spot weld. Approximately 33% less than the average estimated consumption per spot weld in the automotive industry.

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“…Therefore, today, the use of these steels in the automotive industry is a hot topic and is under research and development [6]. Applications of this steel in the upper pillar B include roof columns, engine support chassis, front and rear rails and seat frame [7] .The microstructure of TRIP steels consists of ferrite, bainite, martensite and greater than 5% of retained austenite. The latter is the most important phase constituent of TRIP steels, because its stress induced transformation to martensite results in work hardening of steel during deformation, and hence delays the onset of necking, eventually leading to a higher ductility [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Applications of this steel in the upper pillar B include roof columns, engine support chassis, front and rear rails and seat frame [7] .The microstructure of TRIP steels consists of ferrite, bainite, martensite and greater than 5% of retained austenite. The latter is the most important phase constituent of TRIP steels, because its stress induced transformation to martensite results in work hardening of steel during deformation, and hence delays the onset of necking, eventually leading to a higher ductility [7,8]. The bainite is formed by isothermal holding at a temperature below the bainite start transformation temperature (Bs) during cooling from intercritical annealing temperature.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Microstructure and Mechanical Properties of Newly Developed Advanced High Strength TRIP Steel

2022

IJE

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In this research, the heat treatment and production of high-strength advanced TRIP1100 steel were investigated and then the mechanical properties of the welds of this steel were evaluated by spot welding. For this purpose, the effect of rolling process and heat treatment of alloy steel sheets to achieve the ultrahigh strength TRIP1100 steel microstructure was discussed. Microstructural examinations by Scanning Electron Microscopy (SEM) identified ferrite with bainite phases and martensite in matrix. The microstructural characteristics were examined using SEM microscopy with Electron Backscatter Diffraction (EBSD) analysis. The EBSD results showed that the type and orientation of the grains changed and the fraction of high-angle to low-angle boundaries in the present steel varied due to the presence of different phases. The EBSD results showed the acceptable rate of primary austenite in the structure according to the phaseology of this method. Having desirable mechanical properties was one of the most important results of this study, which at the same time maintained impact resistance and mechanical strength.

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Development of a new program control setting of welding current and electrode force for single-side resistance spot welding

Cited by 13 publications

References 3 publications

Weldability and shear strength feasibility study for automotive electric vehicle battery tab interconnects

Weldability and shear strength feasibility study for automotive electric vehicle battery tab interconnects

A new approach to reduce the carbon footprint in resistance spot welding by energy efficiency evaluation

Investigation of Microstructure and Mechanical Properties of Newly Developed Advanced High Strength TRIP Steel

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