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:
Aug. 01, 2023
Filed:
Oct. 16, 2020
Applicant:
Proterial, Ltd., Tokyo, JP;
Inventors:
Assignee:
PROTERIAL, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B 27/02 (2006.01); C22C 33/08 (2006.01); C22C 37/04 (2006.01); C22C 37/10 (2006.01); B21B 1/22 (2006.01); B22D 13/02 (2006.01);
U.S. Cl.
CPC ...
B21B 27/021 (2013.01); C22C 33/08 (2013.01); C22C 37/04 (2013.01); C22C 37/10 (2013.01); B21B 2001/225 (2013.01); B22D 13/02 (2013.01);
Abstract
A centrifugally cast composite roll for hot rolling comprising an outer layer made of an Fe-based alloy having a chemical composition comprising by mass 2.6-3.6% of C, 0.1-3% of Si, 0.3-2% of Mn, 2.3-5.5% of Ni, 0.5-3.2% of Cr, 0.3-1.6% of Mo, 1.8-3.4% of V, and 0.7-2.4% of Nb, 1.4≤V/Nb≤2.7, a V equivalent (Veq=V+0.55Nb) being 2.60-4% by mass, and the balance being Fe and impurities, and an inner layer made of an iron-based alloy and integrally fused to the outer layer.