The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2022
Filed:
Aug. 07, 2019
Applicant:
Hitachi Metals, Ltd., Tokyo, JP;
Inventors:
Yasunori Nozaki, Kitakyusyu, JP;
Nozomu Oda, Kitakyusyu, JP;
Assignee:
HITACHI METALS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B 27/02 (2006.01); B21B 27/03 (2006.01); B22D 19/16 (2006.01); B22D 13/02 (2006.01);
U.S. Cl.
CPC ...
B21B 27/02 (2013.01); B21B 27/021 (2013.01); B21B 27/032 (2013.01); B22D 13/026 (2013.01); B22D 19/16 (2013.01);
Abstract
A centrifugally cast composite roll for rolling comprising an outer layer and an inner layer, which are integrally fused to each other, the outer layer being made of an Fe-based alloy comprising by mass 1.70-2.70% of C, 0.3-3% of Si, 0.1-3% of Mn, 1.1-3.0% of Ni, 4.0-10% of Cr, 2.0-7.5% of Mo, 3-6.0% of V, 0.1-2% of W, 0.2-2% of Nb, 0.01-0.2% of B, and 0.01-0.1% of N, the balance being Fe and inevitable impurities, and the inner layer being made of ductile cast iron.