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Research on Changes in Microstructures and Mechanical Properties of Welding Caps as a Result of their Usage During Resistance Spot Welding Process

Rdzawski, Z. ; Kwaśniewski, P. ; Głuchowski, W. ; Łagoda, M. ; Maleta, M. ; Boczkal, S. ; Franczak, K.

Archives of metallurgy and materials, 2023-01, Vol.68 (1), p.295-306 [Periódico revisado por pares]

Warsaw: Polish Academy of Sciences

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  • Título:
    Research on Changes in Microstructures and Mechanical Properties of Welding Caps as a Result of their Usage During Resistance Spot Welding Process
  • Autor: Rdzawski, Z. ; Kwaśniewski, P. ; Głuchowski, W. ; Łagoda, M. ; Maleta, M. ; Boczkal, S. ; Franczak, K.
  • Assuntos: Automotive bodies ; Copper ; Copper base alloys ; cucrzr alloy ; Electrical resistivity ; Electrodes ; Galvanized steel ; Galvanized steels ; Galvanizing ; Mechanical properties ; Metal sheets ; microanalysis ; Microstructure ; Resistance spot welding ; Thermal conductivity ; tip electrodes ; Welding electrodes
  • É parte de: Archives of metallurgy and materials, 2023-01, Vol.68 (1), p.295-306
  • Descrição: Mating electrodes made of copper alloys are commonly used for welding galvanized steel sheets used in the production of car bodies. These alloys are characterized by high mechanical properties, a high level of electrical and thermal conductivity as well as the stability of these properties under changing conditions of current, thermal and mechanical load. Much careful attention was paid to the essence of the ongoing structural changes as well as to the mechanical properties in the welding process (RSW – Resistant Spot Welding) of steel sheets, including high-strength ones. There is a lack of research on structural changes and the related mechanical properties occurring in welding electrodes made of copper alloys caused by the welding process. This study is devoted to these issues and contains a critical review of the research results enabling a better understanding of the relationships between the structure and properties of welding electrodes caused by the cyclic welding process. In order to illustrate the phenomena occurring during the welding process, both in the material to be welded and in the tip electrodes, hardness and structural tests were carried out on electrode samples before and after their exploitation. The data collected in the article supplements a certain lack of information in the literature regarding the microstructural aspects of the welding process of galvanized steel sheets for the production of car bodies. The conducted research may be the starting point for the search for more effective materials for the tip electrodes.
  • Editor: Warsaw: Polish Academy of Sciences
  • Idioma: Polonês;Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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