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Metallurgy, Vol.49 No.4 October 2010. -

The aim of this paper is to define optimization of welding conditions for Submerged Arc Welding SAW of steel pipes for gas transportation. Fine grain steel X-52 with thickness of 8 mm were used as a base material. Welding was performed from inner and outer side. Two wires, inclined under different angles, were feed separately. Eleven samples divided in three series were experimentally welded. Performed investigations indicated that the best properties showed weldments from series III, welded with the highest heat input. On the contrary of our expectations, welds from series II, using self made equipment, showed pretty bead properties and improper geometry. So, improving of this this equipment and obtaining welds with better properties is the target in future investigations.

welding parameters; microalloyed steel; tandem process

Autor: S. Cvetkovski - ; Faculty of Technology and Metallurgy, Skopje, Republic of Macedonia V. Grabulov - ; Institute for materials tes

Fuente: http://hrcak.srce.hr/


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