DBPapers
DOI: 10.5593/sgem2012/s05.v2007

JOINING OF NON-ALLOYED STEEL PIPES USED IN INDUSTRIAL PRACTICE BY COLD METAL TRANSFER PROCESS

R. ALEXANDRU ROSU, M. POPESCU
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 481 - 486 pp

ABSTRACT

Cold Metal Transfer (CMT) process is used successfully in many industrial applications
because of the advantages (low linear energy, accuracy) to similar or dissimilar joints.
The paper presents the experimental results regarding the realization of steel pipe joints
mark P195GH with Ø255mm and thickness of 4.5 mm using as filler material electrode
wire SG-CuSi3 alloy (DIN 1733) with the diameter of 1.2 mm.
Tensile test values are between 122 and 123 N/mm2, the breaking taking place in base
metal. The macro-microscopic analyzes of the welded joints in the characteristic areas
showed not welding defects such as cracks.

Keywords: CMT process, mechanical tests, microstructure