MONITORING PULSED GMAW PARAMETERS IN HY100 WELDMENTS

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Authors
  1. Robicheau, R.M.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);J and R Consultants Inc, 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 is 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. The project evaluated the electrical output characteristics of the following three welding systems to determine the pulsing parameters of each of the following 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 utilised to produce weldments for evaluation on previous DREA projects. Lincoln LA 100 welding wire and T.I.M.E. gas was 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 procedure qualification in order to establish calibration criteria for production welds.
Keywords
TRANSFERRED IONIZED MOLTEN ENERGY (TIME) Process
Report Number
DREA-CR-95-442 — Contractor Report
Date of publication
01 Jul 1995
Number of Pages
102
DSTKIM No
95-04951
CANDIS No
153517
Format(s):
Document Image stored on Optical Disk;Hardcopy

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