Metal founding – Process – Shaping a forming surface
Patent
1975-04-21
1976-12-21
Shore, Ronald J.
Metal founding
Process
Shaping a forming surface
164 43, 164206, 254 4AB, B22C 1524
Patent
active
039982602
ABSTRACT:
An apparatus and method for forming foundry cores and molds of superior hardness and uniformity in a wide range of sizes includes staging hoppers for storing a first mass of sand coated with a catalyst-polymerizable resin film, and a second mass of sand coated with a catalyst film for polymerizing the resin. In forming the cores or molds these masses are simultaneously and evenly dispersed into a high velocity carrier air-sand stream and directed through a static mixer, wherein the resin and catalyst-coated sand particles are intermingled and at least a partial integration of the films takes place into a shaping mold cavity, wherein the sand mixture hardens into a desired shape. For improved integration of the resin and catalyst films, and for improved core density, air is injected into the air sand stream downline of the static mixer immediately prior to the sand mixture entering the shaping mold.
REFERENCES:
patent: 2929248 (1960-03-01), Sprenkle
patent: 3179134 (1965-04-01), Sigrist
patent: 3366277 (1968-01-01), Barber
patent: 3472307 (1969-10-01), Godding
patent: 3643927 (1972-02-01), Crouch
patent: 3800985 (1974-04-01), Grout et al.
Kopp Joseph N.
Morris Bruce V.
Cummings Eugene M.
O'Halloran Joseph P.
Shore Ronald J.
The Quaker Oats Company
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