DEVICE TO PRODUCE CASTINGS WITH DIRECTED AND MONOCRYSTALLINE STRUCTURE Russian patent published in 2013 - IPC B22D27/04 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy and may be used for making gas turbine blades, jet nozzle flaps and spacers, disc billets, etc. Proposed device comprises vacuum chamber with end covers, induction melting furnace, mould heating furnace, mould cooling container, heat isolation shield arranged between mould heating furnace and mould cooling container and mould suspension system. Mould heating furnace top zone comprises two electric heaters connected in parallel and equipped with separate power supplies. Vacuum chamber front end cover is mounted at monorail to displace perpendicular to the device lengthwise axis. Heat isolation shield is composed of at least two segments with individual drives and guides. Mould suspension system comprises mould support to prevent its deformation and destruction. Bottom zone heater height makes 1/3-1/4 of top zone heater height. Induction melting furnaces comprises crucible with capacity approximating to 60 kg.

EFFECT: higher quality of large-sized castings.

9 cl, 4 dwg