A STUDY ON PARAMETER OPTIMIZATION FOR CIRCUMFERENTIAL GAS TUNGSTEN ARE (GTA) WELDING OF SMALL PIPES CONSIDERING BACKING GAS-PRESSURE .2. PROCESS OPTIMIZATION
Sj. Na et Tj. Lho, A STUDY ON PARAMETER OPTIMIZATION FOR CIRCUMFERENTIAL GAS TUNGSTEN ARE (GTA) WELDING OF SMALL PIPES CONSIDERING BACKING GAS-PRESSURE .2. PROCESS OPTIMIZATION, Proceedings of the Institution of Mechanical Engineers. Part B, Journal of engineering manufacture, 210(1), 1996, pp. 87-91
Extensive use of circumferential gas tungsten are (GTA) welding in ind
ustrial applications has been handicapped due to the difficulty of cho
osing the optimal process parameters. In Part 2 of this study, the wel
ding current and backing gas pressure are optimized by calculating the
three-dimensional transient temperature distribution and the surface
profile of the resultant weld pool in circumferential GTA welding of s
mall-diameter pipes, in order to obtain a uniform weld bead without an
y hang-down over the entire circumference of pipes.