Estimation of lobe curve with material strength in resistance projection welding

Ha, Sangun; Murugan, Siva Prasad; Marimuthu, Karuppasamy Pandian; Park, Yeong-Do; Lee, Hyungyil

doi:10.1016/j.jmatprotec.2018.07.037

Cited by 14 publications

(5 citation statements)

References 8 publications

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“…However, no detrimental effect on weld quality was observed due to the high rise in temperature during the welding. Even the welded cell electrical test results were also satisfactory compared to the unwelded cell. The projection welding approach can be used to produce 4 nuggets simultaneously [22]. However, additional work is required for developing projected tabs before welding which may also have a detrimental effect on weld quality due to thinning of the sheet as a result of projection.…”

Section: Resultsmentioning

confidence: 99%

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Utilising a novel multi-electrode approach for improving micro-resistance spot welding productivity for electric-mobility battery interconnects

Kumar

Ramakrishnan

Panchapakesan

et al. 2023

Science and Technology of Welding and Joining

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The micro-resistance spot welding is widely used for low-to-medium-volume applications due to its low cost, especially for cylindrical Lithium-ion cell-based modules. Using typical microresistance spot welding electrodes in a series configuration, two nuggets/welds are created in a single welding operation. As it is a contact joining process, productivity is limited. This paper developed a novel approach to enhance the productivity of micro-resistance spot welding, where four nuggets were produced instead of two nuggets in a single operation. The criticalto-quality criteria, including joint strength, microstructure, electrical resistance and temperature rise at joints, were demonstrated by comparing the existing and proposed approaches. A reduction in cycle time by up to 57% can be achieved by adopting the proposed approach while maintaining the weld quality.

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Section: Resultsmentioning

confidence: 99%

“…The projection welding approach can be used to produce 4 nuggets simultaneously [22]. However, additional work is required for developing projected tabs before welding which may also have a detrimental effect on weld quality due to thinning of the sheet as a result of projection.…”

Section: Resultsmentioning

confidence: 99%

Utilising a novel multi-electrode approach for improving micro-resistance spot welding productivity for electric-mobility battery interconnects

Kumar

Ramakrishnan

Panchapakesan

et al. 2023

Science and Technology of Welding and Joining

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“…para que seja ocasionado a fusão e consecutivamente a união requerida, conforme projeto do produto (Huang & Tseng, 2011). A execução do processo de soldagem por projeção baseia-se nos seguintes tempos: tempo de subida de pré-pressão dos eletrodos, tempo de subida da corrente de solda, tempo de soldagem sob a pressão dos eletrodos e tempo de pós-pressão da peça entre os eletrodos (Ha et al, 2019). O ciclo de soldagem conforme Branco (2019) é lustrado na Erro!…”

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Análise da liga de capa de eletrodo de cobre cromo zirconio utiliza-dos em processos de soldagem por resistência elétrica por projeção

Lemos,

Cruz Junior,

Varasquim

et al. 2024

OLEL

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A busca pela eficiência de suas operações é um dos maiores objetivos da indústria, portanto os processos devem ser compatíveis o suficiente para obtenção de um bom resultado, principalmente no que diz respeito a recursos e consumíveis. A finalidade do estudo foi analisar o comportamento da liga de Cobre-Cromo-Zircônio em uma capa de eletrodo utilizada no processo de soldagem por projeção (RPW), na indústria automotiva. Com mais de 300 componentes e 4000 a 7000 pontos soldados, a soldagem por resistência elétrica é crucial para a montagem de veículos. Foram fabricados dois eletrodos sendo um superior e um interior para realização dos testes, foi utilizada uma máquina de solda estacionária convencional de 60Hz para efetuar a soldagem de 1000 corpos de prova. A análise de dureza superficial do eletrodo inferior foi feita antes e após a soldagem. Foram realizadas as análises utilizando um microscópio eletrônico de varredura para avaliar mudanças no comportamento da liga ao longo da seção transversal. O estudo contribui para melhorar a eficiência e a qualidade dos processos de soldagem na indústria automotiva.

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“…Welding current, welding time and electrode strength are important parameters for weld quality in projection welding as in spot welding [6]. Low current causes inadequate weld nugget, and high current causes burns on the weld surface [7]. The relief geometry of the part to be welded in projection welding also has an effect on the quality of the weld [8].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Effect of Projection Types on Stud Weld Strength by Taguchi Method

Kir

YAZAR²,

Talaş

2024

Politeknik Dergisi

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In this study, the effect of different weld projections on the mechanical properties of stud welds was analyzed using the Taguchi experiment planning method, using a projection welding machine with a capacity of 100 kVA with MFDC transformer. The samples were subjected to the tensile rupture force test with a destructive test device. The aim of this study was to ensure product safety by capturing the spot-welding quality, which is determined by the specifications of the automotive main industry, using a bolt with a lower weight. In this study, 1.5 mm WSS-M1A365-A11 uncoated steel sheet and 8.8 quality M6x1.00x25 triple projection uncoated welding bolts and 8.8 quality M6x1.00x18.5 ring shaped weld bolts were used as stud welding bolts. Different welding times, different welding currents and different welding clamping forces were used on the WSS-M1A365-A11 steel sheet samples in the stud welding operation with bolts. Taguchi analysis showed that ring shaped stud weld bolts required welding parameters of 32 ms welding time, 27 kA welding current and 500 daN welding force, while triple projection stud welding was found to perform the best optimum weld with 23 ms welding time, 18 kA welding current and 350 daN force.

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Estimation of lobe curve with material strength in resistance projection welding

Cited by 14 publications

References 8 publications

Utilising a novel multi-electrode approach for improving micro-resistance spot welding productivity for electric-mobility battery interconnects

Utilising a novel multi-electrode approach for improving micro-resistance spot welding productivity for electric-mobility battery interconnects

Análise da liga de capa de eletrodo de cobre cromo zirconio utiliza-dos em processos de soldagem por resistência elétrica por projeção

Investigation on the Effect of Projection Types on Stud Weld Strength by Taguchi Method

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