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:
Mar. 26, 1991
Filed:
Dec. 18, 1989
Applicant:
Inventors:
Masakazu Achikita, Kashiwa, JP;
Shinichi Sogame, Yamato, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419 23 ; 419 29 ; 419 36 ; 419 37 ; 419 54 ; 419 58 ;
Abstract
A method of manufacturing a soft magnetic Fe-Si alloy sintered product comprising a step of injection molding a composition comprising an Fe-Si powder mixture blended so as to contain from 1 to 10% by weight of Si and the substantial balance of Fe and a binder a step of applying binder-removal under heating to the resultant green body and applying a degassing and Si-diffusing; and a step of subsequently applying sintering. The sintered product is, preferably, applied with further heating for obtaining better soft magnetic property. Soft magnetic property of the sintered products is as comparable with or superior to products by conventional powder metallurgy.