SURFACE TENSION EFFECTS IN THE FLUX CORED ARC WELDING OF HY80 STEELS
- Authors
- Corporate Authors
- Defence Research Establishment Atlantic, Dartmouth NS (CAN);Technical Univ of Nova Scotia, Halifax NS (CAN)
- Abstract
- Efficient deposition of weld metal requires a complicated gas-metal-slag interaction to maintain the correct chemistry, during solidification. The slag-metal quasi-equilibrium determines the mechanical performance and the bead profile of the solidifying weld pool. The fluxes in the consumables for joining the HY series of plate were found to be rutile based with melting points exceeding 1600C, while the slag from the welds all fused below 1450C. The extremely aggressive nature of these commercial slags made surface tension and viscosity measurements difficult. A model slag system showed that the precipitation of titania compounds caused a tenfold increase in viscosity during cooling.
- Report Number
- DREA-CR-87-462 — Contractor Report
- Date of publication
- 15 Dec 1987
- Number of Pages
- 72
- DSTKIM No
- 88-01436
- CANDIS No
- 54670
- Format(s):
- Microfiche filmed at DSIS;Originator's fiche received by DSIS;Hardcopy
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