METAL MOLD FOR CASTING STRAIGHT-FLOW VALVES Russian patent published in 1995 - IPC

FIELD: foundry. SUBSTANCE: straight-flow valve body casting mold has movable half- mold 1 and immovable half-mold 2, which have inserts 3,4 disposed within half-molds in faced relation one with respect to the other. Inserts have teeth conjugated by their flat surfaces and adapted for defining mold inner cavities. Teeth insert 3 are made with curvilinear surface and mating teeth have rectangular trapezium- shaped section. Insert surfaces are conjugated along protrusion extending along inclined side of trapezium to form sealing outline in ready valve. EFFECT: wider range of castings by providing manufacturing of cast-in-block bodies of straight-flow valves, and, as a result, elimination of such operations as machining and assembling of valve body and reduced labour requirements for manufacture of valve. 9 dwg