Method of quenching large-diameter thin-wall metal pipe

Details Method of quenching large-diameter thin-wall metal pipe Method of quenching large-diameter thin-wall metal pipe

C - Chemistry, Metallurgy

21

D

148/50

C21D 9/08 (2006.01)

Patent

CA 1065745

Abstract of the Disclosure A method of quenching a large-diameter thin-wall metal pipe wherein in the process of quenching a large- diameter thin-wall metal pipe by continuously passing the pipe through a heating zone to a cooling zone, in the rear part of the cooling zone the amount of strain on the outer periphery of the pipe is detected at a plurality of positions on the circumference of the pipe, whereby in accordance with the deviation of the detected value from a predetermined value the amount of cooling water at the positions on the circumference corresponding to the detecting positions is changed and if necessary the correcting pressure of mechanical correcting means is further controlled, thereby still ensuring a correct shape for the pipe when the quenching has taken place.

243745

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