GEAR DEPOSITING HEAT INSULATION COATS ON CYLINDRICAL MOULDS Russian patent published in 1997 - IPC

FIELD: foundry, manufacture of rolls. SUBSTANCE: gear depositing heat insulation coats on cylindrical moulds includes rod, mechanism moving it, disc with driving shaft, vessel with heat insulation material and valve which are made in the form of intercoupled cylinders. Each of them has inner layer of elastic material, for instance, rubber and outer layer of rigid material, for instance, steel which are positioned uniaxially. Compressed air is supplied to clearance between layers. Upper part of vessel has sealed loading holes. Compressed air is fed into vessel through flow governor. Separate washers enabling consumption of heat insulation material to be regulated are placed across outlet of valve. EFFECT: improved design of mechanism feeding heat insulation material of coat allowing mixtures to deposited uniformly with high density and limited viscosity which are necessary for improvement of quality of castings. 2 cl, 1 dwg