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:
May. 15, 2001
Filed:
Jan. 27, 1999
Applicant:
Inventors:
Norio Yuki, Kanagawa-ken, JP;
Yoshihisa Kita, Kanagawa-ken, JP;
Assignee:
Nippon Mining & Metals Co., LTD, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 8/00 ; C22F 1/10 ;
U.S. Cl.
CPC ...
C21D 8/00 ; C22F 1/10 ;
Abstract
Disclosed is a process for producing Fe—Ni alloys used for electron gun parts. The alloy consists of: all by weight, 30 to 55% of Ni; 0.05 to 2.00% of Mn; 0.001% to 0.050 of S; and the balance of Fe and inevitable impurities. The process substantially consists of melting, casting, hot working, cold rolling and annealing. The Fe—Ni alloy satisfies 0.0005≦((%Mn)*(%S))≦0.0100. The hot working is carried out at a temperature T defined by the following equation.