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Projects / Programmes source: ARIS

The welding of austenitic stainless steel in shielding gas nitrogen

Research activity

Code Science Field Subfield
2.10.06  Engineering sciences and technologies  Manufacturing technologies and systems  Welding 

Code Science Field
T130  Technological sciences  Production technology 
T150  Technological sciences  Material technology 
T450  Technological sciences  Metal technology, metallurgy, metal products 
Keywords
avstenitic stainless steel, welding, TIG welding, nitrogen, shilding gas, microstructure, properties, electrical arc
Evaluation (rules)
source: COBISS
Researchers (9)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  07689  MSc Janez Barbič  Manufacturing technologies and systems  Researcher  2002 - 2004  20 
2.  05508  Marko Kovačič  Manufacturing technologies and systems  Researcher  2002 - 2004 
3.  00217  PhD Gabriel Janez Rihar  Manufacturing technologies and systems  Researcher  2002 - 2004  230 
4.  02726  Bojan Rom  Manufacturing technologies and systems  Researcher  2002 - 2004  15 
5.  14997  PhD Marjan Suban  Manufacturing technologies and systems  Researcher  2002 - 2004  135 
6.  09541  Marija Taučer  Manufacturing technologies and systems  Researcher  2002 - 2004  10 
7.  15842  PhD Janko Tomc  Mechanical design  Researcher  2002 - 2004  48 
8.  02045  PhD Janez Tušek  Mechanical design  Researcher  2002 - 2004  1,116 
9.  11182  PhD Borut Zorc  Manufacturing technologies and systems  Head  2002 - 2004  609 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0209  Welding Institute  Ljubljana  5051398000  1,335 
Abstract
TIG welding of thin sheet made of austenitic stainless steel is the most widely spread welding process. The shielding gas used can be Ar or mixtures of Ar+5-10%H2 and He. As root shield, Ar, N2+H2(5-20%) mixture or pure nitrogen are used. In literature, there is no indication of the use of pure nitrogen as a shielding gas. The welding procedure using nitrogen as a shielding gas and a root shield would be the most low-priced of all the known procedures. Investigations would be conducted on electric-arc characteristics, a comparison made with other gases, an influence on weld microstructure, mechanical properties, penetration depth with the same welding parameters, penetration shape, and corrosion properties of welds. If steel contains a small content of nitrogen, it is characteristic that its pitting-corrosion resistance increases.
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