標題: Study of the performance of stainless steel A-TIG welds
作者: Shyu, S. W.
Huang, H. Y.
Tseng, K. H.
Chou, C. P.
機械工程學系
Department of Mechanical Engineering
關鍵字: A-TIG;stainless steel;oxide flux;penetration
公開日期: 1-Apr-2008
摘要: The purpose of the present work was to investigate the effect of oxide fluxes on weld morphology, arc voltage, mechanical properties, angular distortion and hot cracking susceptibility obtained with TIG welding, which applied to the welding of 5 mm thick austenitic stainless steel plates. A novel variant of the autogenous TIG welding process, oxide powders (Al2O3, Cr2O3, TiO2, SiO2 and CaO) was applied on a type 304 stainless steel through a thin layer of the flux to produce a bead on plate welds. The experimental results indicated that the increase in the penetration is significant with the use of Cr2O3, TiO2, and SiO2. A-TIG welding can increase the weld depth to bead-width ratio, and tends to reduce the angular distortion of the weldment. It was also found that A-TIG welding can increase the retained delta-ferrite content of stainless steel 304 welds and, in consequence, the hot-cracking susceptibility of as-welded is reduced. Physically constricting the plasma column and reducing the anode spot are the possible mechanism for the effect of certain flux on A-TIG penetration.
URI: http://dx.doi.org/10.1007/s11665-007-9139-7
http://hdl.handle.net/11536/9518
ISSN: 1059-9495
DOI: 10.1007/s11665-007-9139-7
期刊: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
Volume: 17
Issue: 2
起始頁: 193
結束頁: 201
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