Computer-Aided Design of Electrodes for Manual Metal Arc Welding

L.-E. Svensson, B. Gretoft and H. K. D. H. Bhadeshia


Manual metal arc welding is a complex process involving many variables. In this work we report the development of computer software, based on detailed phase-transformation theory. This allows the theoretical design of primary weld microstructures as a function of the chemical composition, welding current, voltage, arc transfer efficiency, interpass temperature, joint geometry and solidification structure. The application of the software is discussed in terms of electrodes for use in the off-shore oil industry.

Proceedings of an International Conference on Computer Technology in Welding, 1986,
editor W. Lucas, published by The Welding Institute, Abington, U.K., pp. 113-122.

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The images below are optical micrographs. The first letter identifies the weld (b=weld 2B, a=weld 1A as in paper), the three digit number is the magnification when the photograph is printed to 8.8 x 12.6 cm size.

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