Method of forming products by low turbulence, uniform cross sect

Details Method of forming products by low turbulence, uniform cross sect Method of forming products by low turbulence, uniform cross sect

1989-11-30

1991-01-01

Seidel, Richard K.

Metal founding

Process

Shaping a forming surface

164129, 164350, B22C 702

Patent

active

049811673

ABSTRACT:
The conventional investment casting technique is modified to cast metal products where the product has one or more support portons and at least one feeding tube for feeding molten metal into the cast of the product comprising providing a source of molten metal, connecting at least one metal feed tube to the mold of the metal product to be cast, of forming a hole in each support portion wherein the hole in each support portion is much larger than the volume of metal that can be non turbulently transmitted in a deflected manner into the mold by the feed tube so that the metal poured nto the generally uniform cross section mold cools gradually so that the support portions of the cast metal products will have a generally homogenous composition without air bubbles or cracks which could weaken the product.

REFERENCES:
patent: 3041689 (1962-07-01), Peras
patent: 3863704 (1975-02-01), Kahn
patent: 4109699 (1978-08-01), Miller
patent: 4246954 (1981-01-01), Cohen
patent: 4467677 (1984-08-01), Grifford

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