Preliminary communication

Optimization of welding parameters for gas transportation steel pipes

S. Cvetkovski ; Faculty of Technology and Metallurgy, Skopje, Republic of Macedonia
V. Grabulov ; Institute for materials testing, Republic of Serbia
Z. Odanovic ; Institute for materials testing, Republic of Serbia
D. Slavkov ; Faculty of Technology and Metallurgy, Skopje, Republic of Macedonia

Abstract

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.

Keywords

welding parameters; microalloyed steel; tandem process

Hrčak ID:

57441

URI

https://hrcak.srce.hr/57441

Publication date:

1.10.2010.

Article data in other languages: croatian

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