Title:
ROLL MATERIAL FOR HOT ROLLING, AND ROLL FOR HOT ROLLING USING THE SAME
Document Type and Number:
Japanese Patent JP3599714
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a roll material for hot rolling, which solves problems in a conventional hot-rolling roll material of a high-speed steel and a hot-rolling roll of the high-speed steel, adequately keeps the abrasion resistance, and is superior in surface roughening resistance, thermal cracking resistance, and crack propagation resistance, and to provide the roll for hot rolling using the same.
SOLUTION: The roll material for hot rolling has a composition comprising, by wt.%, 1.2-2.0% C, 3.0-4.5% Si (excluding 3.0), 0.2-1.0% Mn, 3.0-5.0% Cr, 1.0-4.0% Mo, 1.0-4.0% W, 1.0-6.0% V, and the balance substantially Fe, while satisfying Si%≥C%×2. The roll for hot rolling is characterized by using the above roll material.
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Inventors:
Toshiro Maekawa
Kobe Takashi
Kobe Takashi
Application Number:
JP2002052919A
Publication Date:
December 08, 2004
Filing Date:
February 28, 2002
Export Citation:
Assignee:
Rainbow Technology Co., Ltd.
International Classes:
B21B27/00; C22C38/00; C22C38/36; (IPC1-7): C22C38/00; B21B27/00; C22C38/36
Domestic Patent References:
| JP5320819A | ||||
| JP6081079A |
Attorney, Agent or Firm:
Rikio Murota