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Multilayer Coating, and Internal Cooling Fins, The 4th International Seminar on Advances in Resistance Welding, 2006 http://www.huysindustries.com/articles/HuysArticle12.pdf BROWERS, R. J.—SORENSEN, C. D.—EAGER, T. W.: Electrode Geometry in Resistance Spot Welding, Supplement to The Welding Journal. ANIK, S.—OGUR, A.—VURAL, M.—TURAN, H.: Experimental Analysis of Resistance Spot Welding Electrodes Life, Istanbul Technical University, Machine Faculty, http://www.mmo.org.tr/resimler/dosyaekler/b8619251a19057cek.pdf?dergi=43. http

Abstract

This paper deals with the issue of welding two different materials – titanium and stainless steel (UNS N50400 + X5CrNi 18-10). These two materials have completely different chemical compositions and mechanical properties; therefore, process of their mutual welding is complicated. Melting temperature of both materials is also different. An innovative MIG LSC arc welding method with an additional material has been selected for this purpose. A protective atmosphere was used in order to avoid galvanic corrosion of materials that would preclude the welding process. Aforementioned atmosphere contained 100% Ar. The MIG LSC welding method was designed by Fronius. Presented experiment compares utilization of following 4 different electrodes (additional material) for the welding of titanium and stainless steel: Ti, Fe, corrosion-resistant Fe and CuSi3 electrode. Tensile test was utilized for evaluation of weldment mechanical properties. Measured results were supplemented with a metallographic analysis snapshot and tensile diagram.

Fracture & Strength of Solids, Jeju, Korea 2013. 10. A5.14/A5.14M:2005 Specification For Nickel And Nickel-Alloy Bare Welding Electrodes And Rods. 11. Tawancy H. M., Long-term ageing characteristics of Hastelloy alloy X. Journal of Materials Science, 18 (1983) 2976-2986. 12. Lippold J. C., Baeslack W. A., Varol I., Heat affected zone liquation cracking in austenitic and duplex stainless steels. Welding Journal 71 (1992) 1-14. 13. Kou S., Solidification and liquation cracking issues in welding. The Journal of The Minerals, Metals & Materials Society, 55, 6 (2003) 37

), vol. 22 (2013), no. 1, pp. 30-34 10. Maksimov S. Y.: Underwater arc welding of higher strength low-alloy steels. Welding International, vol. 24 (2010), no. 6, pp. 449-454 11. Akselsen O. M., Fostervoll H., Ahlen C. H.: Hyperbaric GMA welding of duplex stainless steel at 12 and 35 bar. Welding Journal, vol. 88 (2009), no. 2, pp. 21-28 12. Pessoa E. C. P., Bracarense A. Q., Dos Santos V. R., Monteiro M. D. J., Vieira L. A., Marinho R. R.: Challenges to develop an underwater wet welding electrode for “class A welds” classification, as required in the AWS D3.6 code. ASM

1 Introduction Resistance welding is the most commonly used method for joining steel sheets. An electro-conductive contact surface is created between the works pieces by pressing them together. Watercooled electrodes made of alloyed copper are used in resistance welding. Electrodes convey a pressing force to the joint and direct the welding current to the joint in an appropriate manner. After welding, the electrodes rapily cool down the welded joint. Resistance spot welding is a complex process in which coupled interations exist between electrical, thermal

improves e.g. grip can be found on the market. Using this type of tools can cause injuries while working; however, there are tools where handles cannot be finished with rubber or polymer material. Morse's pliers are often used in automotive industry - garage, workshop, factory for holding during welding, heating, for hydraulic work, also for cutting welding electrodes (Fig. 11). The lack of a shield is necessary because the external part of a handle might be damaged during work. Close attention should be paid and special care taken when using this type of tools