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:
Dec. 29, 2020
Filed:
Mar. 27, 2018
Hitachi Metals, Ltd., Tokyo, JP;
Daigo Ohtoyo, Tokyo, JP;
Hideki Matsumoto, Tokyo, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
A method of producing a forged product is described, in which a forging component is hot-forged using a lower die and an upper die. The method includes a first process in which at least a part of an die face of the lower die is covered with a first glass lubricant; a second process in which the lower die is heated; a third process in which at least a part of the forging component is covered with a second glass lubricant; a fourth process in which the forging component is heated to a temperature that is higher than a heating temperature of the lower die in the second process; and a fifth process in which the forging component is placed on the die face of the lower die and hot forging is performed using the lower die and the upper die.