Patent ID: 8353328
Filing Date: 2013-01-15
Classification: B22C

Abstract:
1. A sand-forming apparatus comprising: a box comprising a cope and a drag which together define a cavity-having a shape corresponding to a desired sand-shape; a blowtube assembly comprising a blowplate and a first tube mounted thereon, the blowtube assembly positioned to enable communication with the cavity; a bonnet integral with or adjacent to the blowplate; and a sealed catalyst chamber on a drag side of the box, wherein the sealed catalyst chamber communicates with a source of catalyst, wherein relative movement among the cope, the blowplate, and/or the bonnet, converts the apparatus among: a sand-blowing state whereat a sand head can communicate with the cavity via a sand passageway through the blowtube assembly; and a catalyst-introducing state whereat the sand passageway is sealed from the cavity.