Method for forming castings having inserts

Details Method for forming castings having inserts Method for forming castings having inserts

1985-12-31

1987-09-08

Batten, Jr., J. Reed

Metal founding

Process

Shaping a forming surface

164 32, 164 34, 164112, 164246, 164332, 164369, B22C 702, B22C 910, B22D 1900

Patent

active

046917543

ABSTRACT:
A core assembly is formed by molding a destructible plastic form around at least one insert and optionally around a non-destructible core. The core assembly can be used, for example, for casting engine cylinder heads having valve seat inserts integral therewith. The plastic form retains and supports the inserts until the precise time the plastic is replaced by the molten metal.

REFERENCES:
patent: Re31488 (1984-01-01), Trumbauer
patent: 4243093 (1981-01-01), Nieman
patent: 4285385 (1981-08-01), Hayashi et al.

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