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Patent Searching and Data


Title:
COMPOSITE ROLL FOR ROLLING
Document Type and Number:
Japanese Patent JP2007144442
Kind Code:
A
Abstract:

To provide a composite roll for rolling, which can solve the problems in an outer layer material of a traditional high speed steel manufactured by centrifugal casting, and has excellent wear resistance, and in which an outer layer and an inner layer are perfectly welded.

The composite roll for rolling has the outer layer α containing over 4.5 to 9.0 mass% of C, over 0.1 to 3.5 mass% of Si, over 0.1 to 3.5 mass% of Mn, over 18.0 to 40.0 mass% of V, and the balance of Fe and unavoidable impurity elements; and has the inner layer γ metallically joined on the inside surface of the outer layer α, wherein the tensile strength of the portion between the outer layer α and the inner layerγ is 400 MPa or higher.


Inventors:
Furushima, Seishi
Matsumoto, Shunji
Honda, Ryota
Hayashi, Kiyoshi
Honda, Takashi
Uchida, Masatsugu
Oyama, Seiji
Oosue, Takuya
Application Number:
JP2005000339914
Publication Date:
June 14, 2007
Filing Date:
November 25, 2005
Export Citation:
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Assignee:
HITACHI METALS LTD
International Classes:
B21B27/00; B21B27/02; B22D19/16; C22C37/00; C22C38/00; C22C38/04; C21D5/00; C21D9/38