Abstract
THE issue of the Scientific American for September contains a short illustrated description of a large Detroit welding plant capable of effecting 2,000 welds of steel parts an hour. The parts are either screwed or tightly fitted together and the joint has a thin copper wire or a paste of copper applied to it. A trolley full of articles is sent through a long tube 6-8 ft. in diameter the centre portion of which is heated to 2,100° F. electrically. The copper melts and is by capillary attraction drawn into the joints. Oxidation is prevented by the tube being filled with a gas prepared by the action of steam at high temperature and pressure on illuminating gas. Beyond the welding zone the tube is cooled so that the articles emerge at room temperature. The copper alloys with the steel at the joint and the alloy appears to be stronger than the steel.
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Copper-Steel Welding. Nature 132, 439–440 (1933). https://doi.org/10.1038/132439f0
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DOI: https://doi.org/10.1038/132439f0