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:
Jul. 07, 2026
Filed:
Aug. 26, 2021
Jfe Steel Corporation, Tokyo, JP;
Makoto Nakaseko, Tokyo, JP;
Shigeru Unami, Tokyo, JP;
Takuya Takashita, Tokyo, JP;
Naoki Yamamoto, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A method for producing water-atomized metal powder by dividing a molten metal stream, which is falling in a vertical direction, by spraying cooling water that impinges on the molten metal stream includes a step of spraying the cooling water at a spray pressure of 10 MPa or more and a spread angle in a range of 5° to 30° from each of three or more cooling water discharge ports arranged remote from the falling molten metal stream. The droplet diameter of the cooling water: 100 μm or less, the convergence angle: 5° to 10°, and the water/molten steel ratio: 50 or more.