General Considerations Regarding Friction Stir Welding of some Steels Used in Important Industrial Fields

Abstract:

The paper present some general aspects regarding results obtained by ISIM Timișoara at FSW of steel alloys, with wide use in important industrial fields. The paper also contains information on own contributions of ISIM Timișoara in the field of FSW.Until the present, ISIM Timisoara has responded to some specific requests from the industry, for applying of the FSW process to light alloys and industrial copper Cu 99.The paper presents some general elements regarding the results obtained to welding steels having wide use in industry and which can substantiate industrial applications.The experimental welding programs were developed using the techniques of application of the FSW process, made by ISIM Timisoara: FSW welding machine, welding tools for steels, monitoring systems of the welding process FSW, respectively system for applying of the FSW-TIG hybrid welding process.Sintered tungsten carbide P20S tools with smooth shoulder and pine in 3 constructive variants: smooth conical, smooth cylindrical and pine with four flat recesses (pyramid trunk) were used.It has been shown that the welding tools made of P20S tungsten carbide, with sharp edges, are more resistant and present the best solution for FSW applications.Experimental programs have shown that by observing specific process conditions, the FSW process can be applied with excellent results when welding steel.

• Periodical: Advanced Materials Research (Volume 1157)
• Pages: 83-92
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1157.83
• Online since: February 2020
• Authors: Cristian Ciucă, Radu Cojocaru*, Lia-Nicoleta Botila, Ion Aurel Perianu
• Keywords: AISI 304L Stainless Steel, DD13 Steel, Friction Stir Welding (FSW), S235 Steel, S420 Steel

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