Apparatus for preheating the ends of upset steel pipes

Details Apparatus for preheating the ends of upset steel pipes Apparatus for preheating the ends of upset steel pipes

C - Chemistry, Metallurgy

21

D

38/22

C21D 1/10 (2006.01) C21D 1/42 (2006.01) C21D 9/08 (2006.01)

Patent

CA 1183348

Abstract Both thickened end portions of predetermined lengths of an upset steel pipe are preheated simultaneously, in advance of heat treatment of the pipe, in an apparatus provided with means for raising or lowering the station- arily supported upset steel pipe and with a pair of induction heaters for simultaneously heating both end portions of the upset steel pipe in the raised position of the pipe, the pair of induction heaters being set in advance to a relative spacing corresponding to the length of the steel pipe, and reciprocated with strokes corres- ponding to the lengths of the thickened end portions. The support means for raising and lowering the pipe includes a plurality of units which may be raised and lowered separately and selectively.

407774

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