Casting methods with composite molded core assembly

Details Casting methods with composite molded core assembly Casting methods with composite molded core assembly

1976-10-19

1978-06-06

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164 34, 164246, 164369, B22C 904, B22C 924, B22C 910

Patent

active

040930181

ABSTRACT:
A core assembly is formed by fabricating a first core, molding a destructible plastic layer around the first core, and molding a second core around the plastic layer. The plastic layer is interlocked wth an irregular outer surface of the first core, and the second core is interlocked with an irregular outer surface of the plastic layer. The core assembly can be used for casting engine cylinder heads to eliminate the need for gluing cores together and the accompanying formation of fins within fluid conducting passages.

REFERENCES:
patent: 3374827 (1968-03-01), Schebler
patent: 3496989 (1970-02-01), Paoli
patent: 3498360 (1970-03-01), Wittmoser et al.

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