Metal founding
AssigneeAbex Corporation
InventorRobert H. Beetle
Life of this patent
Estimating the term…
Abstract
Metal founding in a glass-ceramic mold which is reusable.
Claims7
A foundry method comprising the step of casting molten metal into a rigid mold cavity represented by metal-confining exterior walls surrounding the mold cavity and substantially uniformly composed of a glass-ceramic in which the predominant microstructure is polycrystalline ceramic converted from the glassy state by devitrification, said polycrystalline ceramic existing as a single phase microstructure, said walls dissipating the heat of the casting in part by radiation, and repeating said step for a second casting of molten metal using the same mold.
A foundry mold having metal-confining walls extended entirely about a mold cavity and composed substantially uniformly of a glass-ceramic in which the predominant microstructure is a polycrystalline ceramic converted from a glassy state of devitrification, said polycrystalline ceramic existing as a single phase microstructure, and the interior surface of the mold walls being coated with a mold wash.
Dependencies are inferred from the claim text.