Apparatus for the production by powder metallurgy of a section o

Details Apparatus for the production by powder metallurgy of a section o Apparatus for the production by powder metallurgy of a section o

1988-07-06

1989-09-19

Eley, Timothy V.

Static molds

Uniting preform with molding material

249 95, 249 97, 249145, 249148, 249151, 249156, 249176, 249184, 291573R, 291573B, 291573H, 291574, 425 78, 425117, 425577, B22D 1904, B22C 926, B22F 312, B21D 5308

Patent

active

048674125

ABSTRACT:
Apparatus for the production by powder metallurgy of a heat exchanger block in which two spaced concentric half shells are provided with holes in which profiled pipes are inserted. The profiled pipes are internally supported by pins when metal powder is injected into the hollow space between the half shells for forming a wall section of a header. The radially outer half shell is formed by a plurality of half rings arranged with their side faces in contact with one another and the half rings are individually removed after the wall section is formed.

REFERENCES:
patent: 2391615 (1945-12-01), Caron
patent: 3873805 (1975-03-01), Inoue
patent: 3970488 (1976-07-01), Nelson
patent: 4312687 (1982-01-01), Sigworth, Jr.
patent: 4491557 (1985-01-01), Breitmoser et al.
patent: 4715576 (1987-12-01), Montierth
patent: 4717113 (1988-01-01), Martin

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