Expendable ceramic mandrel

Details Expendable ceramic mandrel Expendable ceramic mandrel

1989-11-17

1993-07-13

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

164369, 164529, 106 389, B22C 910, B22C 108

Patent

active

052264700

ABSTRACT:
Expendable mandrels and methods of using such mandrels for forming voids within materials or surfaces on materials deposited onto the mandrels are described. The mandrels have a coefficient of thermal expansion that substantially matches that of the material to be deposited on the mandrel. Matching coefficients of thermal expansion reduces the likelihood of cracking of the base material when the mandrel and base material are cooled.

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patent: 4709741 (1987-12-01), Nakamura
patent: 4830083 (1989-05-01), Nakamura
patent: 4840219 (1989-06-01), Foreman
patent: 4852347 (1989-08-01), Reynolds

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