Characteristics of shunting effect in resistance spot welding in mild steel based on electrode displacement

Xing, Bobin; Xiao, Yi; Qin, Qing Hua

doi:10.1016/j.measurement.2017.10.049

Cited by 35 publications

(10 citation statements)

References 25 publications

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“…RSW has been commonly used in the automobile industry. RSW is a technology that produces a weld without filler metal by means of a high-intensity current, under simultaneous pressure application [13,14]. This process is described as the heat generated by the welding current used to reach the temperature required for the welding of two or more materials, while the resistance at the welding site is applied.…”

Section: Introductionmentioning

confidence: 99%

Joining the High-Strength Steel Sheets Used in Car Body Production

Kaščák¹,

Cmorej²,

Spišák³

et al. 2021

Adv. Sci. Technol. Res. J.

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Nowadays, there are several important reasons for using high-strength sheets in the manufacturing of car bodies. Car manufacturers choose the steel with good formability, fatigue resistance and ability to absorb impact energy. Microalloyed steels and dual-phase steels are the materials which fulfil the above-mentioned criteria. The application of high-strength sheets has led to the development of new materials joining techniques. Mechanical joining, such as clinching, is the innovative technique to join these progressive materials. Materials of different thicknesses can be joined by clinching. The paper focuses on the comparison of the properties of the joints made by clinching and resistance spot welding. The application of resistance spot welding is still the most used joining method in car body production. These properties were investigated by tensile test and metallographic observation. The HCT600X+ZF, HCT600X+Z and HX420LAD+Z steel sheets were used for the experiments. The results of tensile test show that the values of load-bearing capacity of clinched joints reached from 3900 N to 5900 N and the resistance spot welded joints reached the values of load-bearing capacity from 12000 N to 19500 N. In comparison to the resistance spot welded joints, the clinched joints reached from 32 to 48% of load-bearing capacity.

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Section: Introductionmentioning

confidence: 99%

Joining the High-Strength Steel Sheets Used in Car Body Production

Kaščák¹,

Cmorej²,

Spišák³

et al. 2021

Adv. Sci. Technol. Res. J.

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show abstract

“…A different approach, where relative changes in this value over time are linked to the nugget diameter could potentially lead to improved results. Such approaches are successfully applied to both dynamic resistance as well as electrode displacement signals [9].…”

Section: Discussionmentioning

confidence: 99%

“…Farson [8] showed that electrode displacement curves could be correlated to both nugget height as well as nugget diameter. Xing [9] later applied displacement-based monitoring on shunted welds, and correlated displacement signal features to the final nugget diameter. The same dataset was used to successfully correlate the final weld indentation and the dynamic resistance curves to the nugget diameter of these welds.…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission as a tool for prediction of nugget diameter in resistance spot welding

Dejans

Kurtov

Rymenant

2021

Journal of Manufacturing Processes

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Acoustic emission monitoring has been successfully employed in different application areas such as monitoring of fatigue loaded bridges and pressure testing of vessels. However, application of this technology on resistance (spot) welding processes yielded limited results. Existing literature only mentions the detection of certain defects such as expulsion and cracked welds. Detecting nugget nucleation and growth, to allow prediction of nugget diameter, has never been proven to be feasible based on acoustic emission signals. This work contains experiments based on varying as well as constant nominal welding parameter sets, where acoustic emission waveforms were collected during the welding process. A methodology is described, revealing a correlation between certain frequencies present in the acoustic emission signal and physical events occurring during welding. Based on these frequencies, a model is constructed for predicting the nugget diameter of resistance spot welds based on acoustic emission measurement data.

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“…Para verificação da qualidade, destacam-se alguns métodos que acompanham o processo de soldagem em tempo real, tais como o ultrassom [9,10], deslocamento do eletrodo [11,12] e raio X [13]. Em outras situações consegue-se a análise por meio de instrumentos convencionais, muito utilizados na indústria [14], como também por métodos que permitem avaliar diversas características geométricas do produto soldado, como a análise por imagem.…”

Section: /504unclassified

Análise das Causas de Variação Atribuídas a Diferentes Instrumentos Metrológicos para Verificação das Características Geométricas de um Processo de Soldagem por Pontos

Almeida

Gomes

et al. 2018

Soldag. insp.

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Resumo Neste estudo, buscou-se analisar a variabilidade de instrumentos utilizados na indústria para avaliar as características geométricas de um ponto de solda. Para tal, inicialmente, utilizou-se da técnica de planejamento de experimentos para gerar um arranjo fatorial fracionado para as configurações dos parâmetros de soldagem em corpos de prova de aços galvanizados por imersão a quente, a fim de representar a amplitude real do processo de soldagem por pontos. Para as análises, utilizou-se o estudo de repetitividade e reprodutibilidade (GR&R), pelo método de análise de variância, para identificar os componentes de variação do sistema de medição avaliando três instrumentos distintos, comparando as medições realizadas por um analisador de imagens, a partir do ensaio metalográfico, e métricas de instrumentos convencionais de metrologia como o relógio apalpador e o paquímetro manual. Foram avaliadas duas características da qualidade, sendo elas: a profundidade de indentação e o diâmetro do ponto. A partir dos resultados foi possível verificar que o analisador de imagem apresentou uma menor variabilidade nas medições, caracterizando-se como a melhor escolha para as medições das respostas de qualidade do processo de solda por pontos apresentando um GR&R classificado como aceitável.

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Characteristics of shunting effect in resistance spot welding in mild steel based on electrode displacement

Cited by 35 publications

References 25 publications

Joining the High-Strength Steel Sheets Used in Car Body Production

Joining the High-Strength Steel Sheets Used in Car Body Production

Acoustic emission as a tool for prediction of nugget diameter in resistance spot welding

Análise das Causas de Variação Atribuídas a Diferentes Instrumentos Metrológicos para Verificação das Características Geométricas de um Processo de Soldagem por Pontos

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