APPLICATION OF PULSED CURRENT TECHNIQUES TO WELDING HY80 STEELS

Authors
  1. Lassaline, E.
Corporate Authors
Welding Inst of Canada, Oakville ONT (CAN);Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The work compares two welding machines. The first was the Hobart Quantum 350 with wire feed speed controlled by the arc voltage, and the second was the Welding Institute of Canada (WIC) frequency modulated pulsed current regulator. The WIC unit uses the arc voltage to control the pulse frequency of the current. Using HY80 and approved consumables, both machines could develop acceptable mechanical properties as measured by tensile, bends, Cvn, and COD tests. The WIC FM-GMAW unit showed better weld pool control than the Hobart Quantum 350 which was prone to arc instability. Electronic control of the current ensured faster response and improved performance.
Report Number
RC-274/88 — Contractor Report
Date of publication
15 Mar 1988
Number of Pages
78
DSTKIM No
88-03936
CANDIS No
57150
Format(s):
Hardcopy;Originator's fiche received by DSIS

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