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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 11207721 B1

PDFFull Text
Date of Patent:
Dec. 28, 2021

Filed:

Nov. 15, 2016

Roll for hot rolling process and method for manufacturing same

Applicant:

Fujico Co., Ltd., Fukuoka, JP;

Inventors:

Hyo-Gyoung Kang, Fukuoka, JP;

Akio Sonoda, Fukuoka, JP;

Hideaki Nagayoshi, Fukuoka, JP;

Hiroaki Furuta, Okayama, JP;

Hiroyuki Miyazaki, Fukuoka, JP;

Assignee:

FUJICO CO., LTD., Fukuoka, JP;

Attorney:

Bacon & Thomas, PLLC

Primary Examiner:

Adam J Eiseman

Assistant Examiner:

Fred C Hammers

Int. Cl.
CPC ...
B21B 27/03 (2006.01); C21D 9/38 (2006.01); C22C 38/58 (2006.01); B22D 19/16 (2006.01); B22D 11/00 (2006.01); B21B 39/00 (2006.01); C22C 1/02 (2006.01); C21D 6/00 (2006.01); C22C 38/34 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/48 (2006.01); C22C 38/52 (2006.01);
U.S. Cl.
CPC ...
B21B 27/03 (2013.01); B21B 39/00 (2013.01); B22D 11/00 (2013.01); B22D 11/002 (2013.01); B22D 11/008 (2013.01); B22D 19/16 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 9/38 (2013.01); C22C 1/02 (2013.01); C22C 38/34 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/48 (2013.01); C22C 38/52 (2013.01); C22C 38/58 (2013.01);
Abstract

[PROBLEM] The invention provides a roll for hot rolling process having various types of more excellent durability performances than conventional rolls, and provides also a method for manufacturing the same. [SOLUTION] A cladding layeris formed on an outer circumference portion of a roll for hot rolling process, where the cladding layercomprises: 0.5 to 0.7% by mass of C, 2.8 to 4.0% by mass of Si, 0.9 to 1.1% by mass of Cu, 1.4 to 1.6% by mass of Mn, 2.7 to 3.3% by mass of Ni, 13.5 to 14.5% by mass of Cr, 0.8 to 1.1% by mass of Mo, 0.9 to 1.1% by mass of Co, and 0.2 to 0.4% by mass of Nb, with a balance being Fe and inevitable impurities, and has a thickness of 5 mm or more.

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