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The Iron Age 1921-09-15: Vol 108 Iss 11

1921 Reed Business Information US

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New York, September 15, 1921 ESTABLISHED 1855 VOL. 108: No. 1] ae 3 % i ’ Electric Furnaces and Heat Treatment A Survey of Their Commercial Appli- ‘ation to Steel and Other Industries —QOver 80 in the United States BY EDWIN F. CONE This has been particularly marked recently. Beginnings were made just before the war in treat- ing steel with electricity as the source of heat, but it was the war which really furnished the stimu- lus which has made this phase of heat treatment one of importance. An attempt is made in the following article to present a general, but not necessarily complete, re- view of the extent to which electrical apparatus or furnaces are used commercially in the United States as a means of heat treating steel. It is not claimed that in the summary every type of furnace has been included, but the facts as presented cover the main features of this remarkable development. Several companies have developed furnaces of types especially adapted to the product to be treated. Not only are castings and forgings now being treated in such furnaces, but sheets, steel chain, automo- bile parts, axles, bolts and nuts and small parts for airplanes, as well as non-ferrous and other …

Citation

The Iron Age 1921-09-15: Vol 108 Iss 11. Reed Business Information US. 1921.