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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 11535917 B1

PDFFull Text
Date of Patent:
Dec. 27, 2022

Filed:

Nov. 19, 2020

Steel for mold, and mold

Applicant:

Daido Steel Co., Ltd., Nagoya, JP;

Inventors:

Naoki Umemori, Nagoya, JP;

Shigeki Higuchi, Nagoya, JP;

Assignee:

DAIDO STEEL CO., LTD., Nagoya, JP;

Attorney:

McGinn I.P. Law Group, PLLC.

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
C22C 38/60 (2006.01); B33Y 70/00 (2020.01); B22C 9/06 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01); C22C 38/30 (2006.01); C22C 38/38 (2006.01);
U.S. Cl.
CPC ...
C22C 38/60 (2013.01); B22C 9/061 (2013.01); B33Y 70/00 (2014.12); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/30 (2013.01); C22C 38/38 (2013.01);
Abstract

The present invention relates to a steel for mold, containing: 0.28 mass %≤C≤0.65 mass %, 0.01 mass %≤Si≤0.30 mass %, 1.5 mass %≤Mn≤3.0 mass %, 0.5 mass %≤Cr≤1.4 mass %, 1.9 mass %≤Mo+W/2≤4.0 mass %, 0.2 mass %≤V≤1.0 mass %, and 0.01≤N≤0.10 mass %, with the balance being Fe and inevitable impurities, in which, in a state after quenching and tempering, the steel has: a (Mo, W) carbide having a diameter of 0.2 μm or less being in an amount of 1.2 mass % or more, a ratio (mass ratio) of the amount of the (Mo, W) carbide to an amount of a Cr carbide being 11 or more, and a hardness change of 15 HRC or less.

Find Patent Forward Citations

Umemori, Naoki. (2022). Steel for mold, and mold (U.S. Patent No. 11535917). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11535917

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

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