COMPOSITE ROLL FOR USE IN ROLLING AND MANUFACTURE THEREOF

Title:

COMPOSITE ROLL FOR USE IN ROLLING AND MANUFACTURE THEREOF

Document Type and Number:

WIPO Patent Application WO/1991/019824

Kind Code:

A1

Abstract:

A composite roll for use in hot rolling which is excellent in the resistance to surface roughening, wherein the outer layer of the roll is made from a steel comprising 1.5 to 2.4 wt% of carbon, 3 to 6 wt% of vanadium, 10 to 20 wt% of at least one element selected among chromium, molybdenum and tungsten, and optionally a seeding material comprising 0.05 to 0.20 wt% of aluminum and/or 0.02 to 0.10 wt% of titanium, and the balance of iron and inevitable impurities, and the texture of the outer layer comprises a metallic texture which has a particle grain diameter of 30 to 150 $g(m)m and is enclosed by a eutectic carbide crystallized out in the grain boundary or in which primary carbide crystals are further dispersed and crystallized out in the basic texture of the above crystal.

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Inventors:

HASHIMOTO MITSUO (JP)
OTOMO SEIJI (JP)
AYAGAKI MASATOSHI (JP)
SAWADA KENZO (JP)

Application Number:

PCT/JP1991/000798

Publication Date:

December 26, 1991

Filing Date:

June 13, 1991

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)

International Classes:

B32B15/01; (IPC1-7): C22C37/00

Foreign References:

JPS63114937A	1988-05-19
JPS61199051A	1986-09-03
JPS63266043A	1988-11-02

Other References: