F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
F27B 9/30 (2006.01) C21D 9/56 (2006.01) F27B 9/14 (2006.01) F27B 9/28 (2006.01) F27D 3/02 (2006.01)
Patent
CA 2308641
A vertical heat treating furnace for passing a metal strip, therethrough for heat treatment and a hearth roll applied to a heating/soaking furnace of the vertical heat treating furnace are disclosed. The hearth roll can be configured such that the taper angle of each of first taper sections continuous to a flat section at a central portion of the hearth roll from a roll axial direction is larger than the taper angle of each of second taper sections continuous to each of the first taper sections from the roll axial direction. The length Lc (mm) of the flat section and the length L1 (mm) of the first taper section can satisfy the following relationships: 0.5 Wmin <= Lc <= Wmin and Wmin <= Lc + 2 × Li <= Wmax - 400, where Wmin is the minimum width (mm) of the metal strip, and Wmax is the maximum width (mm) of the metal strip.
Jfe Steel Corporation
Kawasaki Steel Corporation
Robic
LandOfFree
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