C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
38/28, 148/50
C21D 9/08 (2006.01) C21D 1/64 (2006.01)
Patent
CA 1227110
ABSTRACT An improved method and apparatus for quenching elongated steel pipe in a liquid cooling medium, substantially improves the straightness of the finished product. After being heated to an initial temperature higher than the austentite transformation temperature, the pipe is positioned within an array of spaced restraining elements defining an unobstructed cylindrical space dimensioned to receive the pipe without substantial clearance while leaving the exterior surface of the pipe substantially unobstructed. Two streams of coolant are introduced to flow through the interior of the pipe, and over the exterior of the pipe, respectively, the relative volumes of flow of the two streams of coolant being regulated, to ensure substantially uniform rates of cooling as between the interior and exterior surfaces of the pipe. In some embodiments, the apparatus includes an enclosure, at least as long as the pipe to be quenched, which surrounds the cylindrical space within which the pipe is confined during quenching, the external stream of coolant flowing through the annular space between this enclosure and the pipe. The method may be practiced in a existing inside-outside quench unit, through the use of conversion apparatus comprising means for forming an array of spaced restraining elements inside the existing quench tank, to receive a pipe for quenching. Such conversion apparatus may also comprise means for forming an enclosure, to surround the pipe during quenching in the tank.
398338
Becze Garry J.
Kruppert Friedrich W.
Leistner Jack W.
Mcbain Robert M.
Algoma Steel Corporation Limited (the)
Algoma Tubes Inc.
Ridout & Maybee Llp
LandOfFree
Pipe quenching apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe quenching apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe quenching apparatus and method will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1314250