Apparatus for manufacturing cores and molds with pressurized...

Details Apparatus for manufacturing cores and molds with pressurized... Apparatus for manufacturing cores and molds with pressurized...

B - Operations, Transporting

22

C

22/11

B22C 5/14 (2006.01) B22C 15/24 (2006.01)

Patent

CA 1040828

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 under pressure 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 from the hop- pers. The staging hoppers each include a pressurized infeed portion void of sand to provide more even feeding from the hop- pers into the air-sand stream to produce cores of improved consistency.

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