Rolls for disposing at entry side or exit side of quenching...

Details Rolls for disposing at entry side or exit side of quenching... Rolls for disposing at entry side or exit side of quenching...

C - Chemistry, Metallurgy

21

D

C21D 9/56 (2006.01) C21D 9/573 (2006.01)

Patent

CA 2351744

A roll that can be disposed before and/or after a quenching zone of a continuous annealing furnace is provided. The roll has a predetermined profile satisfying Lc >= 0.7 x W min;R = -0.1 x 10-3 to +0.2 X 10-3; and TR >= 20, wherein Lc represents the length (mm) of a flat portion in the center of the roll, W min represents the minimum width (mm) of a steel strip, R represents the inclination of tapered portions disposed at two sides of the roll, and TR represents the radius of curvature (m) of boundaries between the flat portion and the tapered portions. The roll can be used as a hearth roll and/or a bridle roll disposed at the entry side and/or the exit side of the quenching zone.

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