Apparatus and method for manufacturing cores and molds with stat

Details Apparatus and method for manufacturing cores and molds with stat Apparatus and method for manufacturing cores and molds with stat

1975-04-21

1976-12-28

Shore, Ronald J.

Metal founding

Process

Shaping a forming surface

164200, B22C 1524

Patent

active

039995925

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 stage, 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. Because the process is fast and continuous and mixing is accomplished without mechanically driven mixing elements, the apparatus and method are particularly well suited to high volume foundry operations wherein resin-catalyst systems having very fast hardening times are utilized.

REFERENCES:
patent: 2929248 (1960-03-01), Sprenkle
patent: 3409273 (1968-11-01), Kelly
patent: 3472307 (1969-10-01), Godding
patent: 3494412 (1970-02-01), Abraham
patent: 3580326 (1971-05-01), Edwards
patent: 3643927 (1972-02-01), Crouch
patent: 3664638 (1972-05-01), Grout et al.
patent: 3704743 (1972-12-01), Edwards
patent: 3751009 (1973-08-01), Archer
patent: 3800985 (1974-04-01), Grout et al.
patent: 3861652 (1975-01-01), Clark et al.

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