Journal
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
Volume 8, Issue 1, Pages 62-68Publisher
MANEY PUBLISHING
DOI: 10.1179/136217103225008955
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The present paper reports on a new variant of flux shielded arc butt welding without the addition of a filler material, applied to steel bars for concrete reinforcement. The welding process is described, including, the arc ignition and forcing together of the workpieces, via the application Of a mechanical force, to,form an upset. A new portable machine is described, using, which it is possible to apply flux shielded are welding on site. Experiments were carried out, from which optimum welding parameters such as welding current, weld time. and upsetting force were found. The strength properties of the welded joints obtained were determined via mechanical testing. i.e. a bend test, a tensile strength test, and all impact toughness test. Microscopic sections of the welded joints were also produced. A quality analysis of the butt welded joints showed that the mechanical properties of the joints were equivalent or even superior to the properties of the parent metal.
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