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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.:

US 11052440 B1

PDFFull Text
Expired
Date of Patent:
Jul. 06, 2021

Filed:

Mar. 28, 2017

Outer layer of rolling roll and composite roll for rolling

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Yasunori Nozaki, Kitakyusyu, JP;

Nozomu Oda, Kitakyusyu, JP;

Shiho Fukumoto, Yasugi, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

David Sample

Assistant Examiner:

Elizabeth Collister

Int. Cl.
CPC ...
B21B 27/02 (2006.01); C22C 38/48 (2006.01); C22C 38/54 (2006.01); C22C 38/44 (2006.01); C22C 38/56 (2006.01); C22C 38/46 (2006.01); C22C 38/58 (2006.01); B32B 1/08 (2006.01); B32B 15/01 (2006.01); C22C 37/00 (2006.01); B22D 19/16 (2006.01); B22D 13/00 (2006.01); B21B 27/00 (2006.01);
U.S. Cl.
CPC ...
B21B 27/02 (2013.01); B32B 1/08 (2013.01); B32B 15/011 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/54 (2013.01); C22C 38/56 (2013.01); C22C 38/58 (2013.01); B21B 27/005 (2013.01); B22D 13/00 (2013.01); B22D 19/16 (2013.01); C22C 37/00 (2013.01);
Abstract

An outer layer of a rolling roll having a chemical composition comprising by mass 1.3-2.8% of C, 0.3-1.8% of Si, 0.3-2.5% of Mn, 0-6.5% of Ni, 1-10% of Cr, 0.9-6% of Mo, 0-8% of W, 0.5-6% of V, 0-3% of Nb, and 0% or more and less than 0.01% of B, the balance being Fe and inevitable impurities, and meeting the formulae (1): 1000≤1177−52C+14Si−11Mn+6.8Cr+1W+0.65Mo+12V+15Nb≤1115, and (2): 5≤Cr+Mo+0.5W+V+1.2Nb≤15, wherein C, Si, Mn, Cr, W, Mo, V and Nb represent % by mass of these elements, and a structure containing eutectic carbide without graphite.

Find Patent Forward Citations

Nozaki, Yasunori. (2021). Outer layer of rolling roll and composite roll for rolling (U.S. Patent No. 11052440). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11052440

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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