Joining aluminum alloy 5052 sheets via novel hybrid resistance spot clinching process

Zhang, Yu; He, Song; Li, Yang; Guo, Jing; Luo, Zhen; Yong, Cheng

doi:10.1016/j.matdes.2017.01.017

Cited by 39 publications

(22 citation statements)

References 21 publications

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“…The more plunging depth of tools in the conventional FSSW (1.5 times of the sheet thickness) causes the materials flow out of the welding area which leads to the reduction of the bonding thickness. The depth and diameter of indentation in the PFSSW is too low and approximately similar to RSW, 18 which is valuable for automobile industries especially for car painting section and improvement of corrosion resistance. Burs amount in the weld edges increases with increasing the tool rotation speed due to the increase in softened materials volume (Figure 3(a) to (d)).…”

Section: Resultsmentioning

confidence: 99%

AA5052 sheets welded by protrusion friction stir spot welding: High mechanical performance with considering sheets thickness at low dwelling time and tool rotation speed

Farmanbar

Mousavizade

Elsa³

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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In the present work, AA5052 sheets with thickness of 1 mm were successfully welded by protrusion friction stir spot welding as a low cost single-step method with a simple design that produces the no-keyhole joints with special mechanical properties at short dwell time and low tool rotation speed. By using suitable process parameters, the process is able to produce welds with superior mechanical performance in items of peak load and energy absorption compared to other techniques. The plunging depth and dwell time in this method were set as 0.2 mm and 6 s, respectively. The tool rotation speed was changed as 500, 800, 1250, and 1600 r/min to determine the optimum condition based on the microstructural and mechanical properties. Welds strength produced by the protrusion friction stir spot welding was directly related to the joint thickness, and the effective thickness of the upper sheet was maximum at 500 r/min. Protrusion friction stir spot welding joints presented circumferential failure mode after tensile shear testing. Regarding the sheets thickness used in this study, the joints produced by the current work presented high load bearing ability at dwell time of 6 s and tool rotation speed of 500 r/min compared to other techniques.

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Section: Resultsmentioning

confidence: 99%

AA5052 sheets welded by protrusion friction stir spot welding: High mechanical performance with considering sheets thickness at low dwelling time and tool rotation speed

Farmanbar

Mousavizade

Elsa³

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part C:

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show abstract

“…RSW is controlled by three parameters: welding current, welding time and electrode pressure. These control parameters are presented in several scientific researches which use RSW, such as: Wan et al [46], Zhang et al [47] [55]. Knowing controllable and uncontrollable process factors, as well as adequately configuring these parameters, helps to ensure a good welded product, since these factors impact on its geometry and final quality [56].…”

Section: The Process Of Rswmentioning

confidence: 99%

A Gage Study Applied in Shear Test to Identify Variation Causes from a Resistance Spot Welding Measure System

2018

SV-JME

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Resistance welding processes, especially spot welding, have wide applicability in the industry, especially in the automotive sector, due to its fast execution and the non-use of consumables. In addition, the search for quality improvement of the final product is incessant and, in a capable process, there should be no error related to the measurements. In this study, the NGR&R was used by the ANOVA method to identify the variation components of the measurement system in the shear test for two quality characteristics: tensile-shear strength and ultimate strain. The experiments were conducted on a hot dip galvanized steel by using design of experiments to select the parts in order to represent the real amplitude of the process. From the results it was possible to verify that one of the destructive test machines used in this study has a strong variability, evidencing that some adjustments and improvements are necessary in the coupling of the specimens for steels with coating layers (such as galvanized steel, which has a layer of zinc).

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“…Do mesmo modo, um processo de soldagem apresenta três conjuntos de parâmetros principais de regulagem, sendo eles: Corrente de soldagem, tempo de soldagem e força, ou pressão, do eletrodo. Estes parâmetros de controle estão presentes em diversos trabalhos que utilizam a RSW, tais como: [45][46][47][48][49][50][51][52][53][54][55][56][57]. Conhecer os fatores controláveis e incontroláveis do processo, bem como configurar adequadamente os parâmetros para a realização do processo de soldagem, favorecem para garantir um bom produto soldado, uma vez que esses fatores impactam na sua geometria e qualidade final [58].…”

Section: Figuraunclassified

“…Segundo Zhang et al [46], o nugget, ou ponto de solda, deve apresentar como condições principais para avaliação da qualidade a aparência e força adequada, ou seja, é importante que o ponto soldado tenha um tamanho adequado. Segundo Zhang e Senkara [14], os requisitos sobre tamanhos de solda são possivelmente os critérios mais comumente usados em relação à qualidade da solda, onde o tamanho do nugget pode ser significativamente distinto para diferentes aplicações.…”

Section: Figuraunclassified

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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Joining aluminum alloy 5052 sheets via novel hybrid resistance spot clinching process

Cited by 39 publications

References 21 publications

AA5052 sheets welded by protrusion friction stir spot welding: High mechanical performance with considering sheets thickness at low dwelling time and tool rotation speed

AA5052 sheets welded by protrusion friction stir spot welding: High mechanical performance with considering sheets thickness at low dwelling time and tool rotation speed

A Gage Study Applied in Shear Test to Identify Variation Causes from a Resistance Spot Welding Measure System

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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