Manufacturing method of sintered composite machine component hav

Details Manufacturing method of sintered composite machine component hav Manufacturing method of sintered composite machine component hav

1999-09-15

2000-09-19

Mai, Ngoclan

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 8, B22F 702, B22F 704

Patent

active

061207276

ABSTRACT:
Disclosed is a method of manufacturing a machine component of sintered ferriferous composite comprising an outer part and an inner part which is fitted into a hole of the outer part. It has the steps of: preparing one of the outer part and the inner part as a green compact of ferriferous powdered metal and the other as one of a green compact of ferriferous powdered metal, a sintered compact of ferriferous powdered metal and a mass of ferriferous molten metal; inserting the inner part into the hole of the outer part; and sintering the outer part and the inner part to bond the outer part and the inner part. The outer part and the inner part are prepared to have a fitting clearance of approximately -100 to +5 .mu.m. When only the outer part is prepared as a green compact, the outer part is prepared to contain substantially no zinc, and the atmosphere at the sintering step is substantially non-carburizing atmosphere, and when the inner part is prepared as a green compact, the outer and inner parts are prepared so that only the inner part contains zinc, and the atmosphere at the sintering step is substantially carburizing atmosphere.

REFERENCES:
patent: 4086390 (1978-04-01), Mitani
patent: 4503009 (1985-03-01), Asaka
patent: 4524046 (1985-06-01), Suganuma et al.
patent: 4539197 (1985-09-01), Asaka et al.
patent: 4578317 (1986-03-01), Nakamura
patent: 4595556 (1986-06-01), Umeha et al.
patent: 4907330 (1990-03-01), Akao
patent: 4969262 (1990-11-01), Hiraoka et al.
patent: 5659876 (1997-08-01), Mizuta

Affiliated with

Also associated with

Rating

Manufacturing method of sintered composite machine component hav does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manufacturing method of sintered composite machine component hav, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacturing method of sintered composite machine component hav will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1069136