Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 462
ogenous weld ? Ans. The torch should be given a rotary motion, accompaniedby a slight upward and forward movement with each rotation. This movement assists in blending the metal and reduces the liabilityof local overheating. It is desirable to keep the metal surrounding thespot operated upon to a… … WELDING 3,117 The surface should be thoroughly fused before adding metal from thewelding rod, and the latter should be held close to, or in contact withthe surface. Thermit Welding.—This process consists in pouring super-heated thermit steel around the parts to be united. This thermitsteel is…
Electrical engineering
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