PULSED GMAW PARAMETERS IN HY WELDMENTS

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Authors
  1. Robicheau, R.M.
  2. Matthews, J.R.
Corporate Authors
J and R Consultants Inc, Dartmouth NS (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The Parameters in Synergic Pulsed GMAW welding are a direct result of the logic programmed into each specific welding machine and are dependent on the shielding gas, weld wire composition and wire size. In many systems, the pulsing parameters cannot be varied from manufacturer's pre-programmed settings. This project evaluated the electrical output characteristics of the following three welding systems to determine the pulsing parameters of each of ther power sources: (1) Fronius T.I.M.E. 450 Synergic; (2) Fronius T.I.M.E. 540 coupled with a TR-19 synergic pulsing unit; and (3) Linde 650. These machines had been utilized to produce weldments for evaluation on previous DREA projects. Lincoln LA 100 welding wire and T.I.M.E. gas were used on each machine but C-5 gas was also evaluated on the T.I.M.E. 540. Pulsing parameters were determined at wire feed speeds ranging from 100 to 500 IPM, various synergic settings, and for welding procedures conducted in previous projects. Pulsed gas metal arc welding is the superior process for all positional welding of HY steels, however, it is essential that pulsing parameters be recorded during welding procedures qualification in order to establish calibration criteria for production welds.
Report Number
DREA-NAMT-95-1-PAP-2 — CONTAINED IN 99-00779
Date of publication
30 May 1995
Number of Pages
22
DSTKIM No
99-00781
CANDIS No
510345
Format(s):
Hardcopy;Document Image stored on Optical Disk

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