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2 2008

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Metallographic analysis of electrode materials for resistance spot welding

Abel M., Vinas J., Kascak L., Draganovska D.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2008

z. 73 [253]

13-18

The contribution deals with metallographic analyses of welding tip materials and workpieces used in their production. Microstructures of in practice most used alloys Cu for welding electrodes of resistance spot welding are evaluated. Alloys of CuCr1Zr, CuCoBe and CuBe2. Analyses of influence of alloying elements and production technology of the alloys on final properties of electrode materials are presented. The effort of producers is the maximum lifetime of welding tips on which many factors have influence during welding process. Used welding mode, material properties of the tips, technology of their production, sort and surface treatment of welded materials and so on.

Influence of deformation on a lifetime of welding tips of resistance spot electrodes

Abel M., Vinas J., Kascak L.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2008

z. 73 [253]

7-12

The contribution deals with the influence of welding electrode tips deformation on their lifetime. The influence of material properties, production technology and the intensity of welding electrodes load on their lifetime are presented. The electrode tips of the most used type of CUCr1Zr alloy of three basic standard shapes before and after the process of welding are evaluated. The process of welding is realized with low, middle and maximum welding parameters on programmable pneumatic spot welding machine VTS BPK 20. The influence of welding parameters on chosen material characteristics of welding tips is observed. Through the use of upsetting test, dependency of forming strength and deformation of material on used technology of welding tip production is observed.