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:
Apr. 17, 2012
Filed:
Sep. 13, 2005
Kiyoshi Furushima, Fukuoka-ken, JP;
Shunji Matsumoto, Fukuoka-ken, JP;
Ryota Honda, Fukuoka-ken, JP;
Kiyoshi Hayashi, Fukuoka-ken, JP;
Takashi Honda, Fukuoka-ken, JP;
Masatsugu Uchida, Fukuoka-ken, JP;
Kiyoshi Furushima, Fukuoka-ken, JP;
Shunji Matsumoto, Fukuoka-ken, JP;
Ryota Honda, Fukuoka-ken, JP;
Kiyoshi Hayashi, Fukuoka-ken, JP;
Takashi Honda, Fukuoka-ken, JP;
Masatsugu Uchida, Fukuoka-ken, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile