Construction and method of making heat-exchanging cast metal for

Details Construction and method of making heat-exchanging cast metal for Construction and method of making heat-exchanging cast metal for

1997-03-19

1998-11-10

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 98, 164131, 164306, 164348, B22C 702, B22D 1904, B22D 2900, B22D 2704

Patent

active

058329811

ABSTRACT:
A one-piece cast metal heat-exchanging forming tool is prepared using an expendable porous preform that is cast in place within a cast metal forming tool. The expendable preform is thereafter extracted to leave behind a network of inter-connected pores and passages within the body of the tool through which a heat transferring fluid may be circulated to transfer heat to or from a substantially non-porous contoured shaping surface of the tool. Fluid distribution/collection lines and vacuum lines may be incorporated in the tool during casting.

REFERENCES:
patent: 4285385 (1981-08-01), Hayashi et al.
Fansteel/Wellman Dynamics, Premium Quality Sand Castings brochure (1997).
"High Performance Castings, A Technical Guide", Elihu F. Bradley, ASM International, Chapter 5, pp. 95-122 (1989).

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