OUTER LAYER MATERIAL OF ROLL FOR HOT ROLLING AND COMPOSITE ROLL FOR HOT ROLLING

Title:

OUTER LAYER MATERIAL OF ROLL FOR HOT ROLLING AND COMPOSITE ROLL FOR HOT ROLLING

Document Type and Number:

Japanese Patent JP3632640

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a composite roll for hot rolling, which is suitable for a post-stand in a hot finishing rolling, and is superior in abrasion resistance and seizure resistance.
SOLUTION: This outer layer material has a composition consisting of 2.5-4.0% C, 0.8-2.5% Si, 0.2-1.5% Mn, 1.0-3.5% Cr, 0.5-4.0% Mo, 3.0-7.0% Ni, 1.0-3.5% V, 0.2-1.0% Nb, 0.02-0.2% Al, and 0.020-0.10% B, satisfying Cr/C of 1 or less, and including the balance Fe with unavoidable impurities. The material can further includes one or two selected from, by mass%, 0.10% or less REM (rare-earth metals), and 0.01% or less Ca, in addition to the above composition.

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Inventors:

Kenji Ichino
Takaaki Toyooka
Satoshi Ozeki

Application Number:

JP2001264747A

Publication Date:

March 23, 2005

Filing Date:

August 31, 2001

Export Citation:

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Assignee:

jfe Steel Corporation

International Classes:

B21B27/00; C22C37/00; (IPC1-7): C22C37/00; B21B27/00

Domestic Patent References:

JP2000144302A
JP2000144303A
JP8302444A
JP6335712A
JP1247553A

Attorney, Agent or Firm:

Eiichi Kobayashi

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