Sprue pin for producing castings

Details Sprue pin for producing castings Sprue pin for producing castings

1985-09-20

1988-05-03

Godici, Nicholas P.

Metal founding

Means to shape a forming surface

Pattern

164 35, 249 54, 249 62, B22C 702, B22C 904

Patent

active

047413786

ABSTRACT:
An improved sprue pin for producing castings by the lost wax method wherein the sprue pin gradually decreases in external circumference toward the tip of the sprue. The length and gauge of the sprue is such that it provides acceptable flow rates and solidification times for new base metal and palladium alloys. A set of lines about the circumferentially decreasing tip allows the user to conform the sprue to the size of the wax pattern being used to form the casting.

REFERENCES:
patent: 996978 (1911-07-01), Curl
patent: 3340923 (1967-09-01), Benfield
patent: 3610317 (1971-10-01), Benfield et al.
patent: 4081019 (1978-03-01), Kulig

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