Bore chill for lost foam casting pattern

Details Bore chill for lost foam casting pattern Bore chill for lost foam casting pattern

1986-09-22

1987-11-17

Godici, Nicholas P.

Metal founding

Means to shape metallic material

United particle type shaping surface

164236, 164246, 164356, 164 34, B22D 1500

Patent

active

047067322

ABSTRACT:
A chill device for combination with a vaporizable pattern for casting metal by a lost foam process comprises a chill body receivable within a bore of the pattern and including a plurality of outwardly extending fins. The fins define channels therebetween for packing with mold sand to shape the cast metal and for venting pattern decomposition vapors during casting to avoid pore-forming entrapment in the cast metal. Also, the fins contact the bore surface to conduct heat into the chill body from the cast metal about the bore to accelerate solidification and thereby reduce shrink porosity. Thus, the chill device of this invention produces pore-free metal in the casting region immediately about the bore.

REFERENCES:
patent: 4520858 (1985-06-01), Ryntz, Jr. et al.

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