FIELD: process engineering.
SUBSTANCE: invention relates to casing and may be used for production of gas turbine engine vanes from heat-resistant alloys. Proposed method comprises producing shell mould, placing stub at mould bottom prior to heating, heating mould to above liquidus temperature of heat-resistant alloy, filling mould with melt, and performing directed crystallisation with the help heat-resistant stub. Stub is produced by casting in vacuum furnace in open-bottom mould arranged on uncooled copper crystalliser. Stub cooled down, its surface is ground that stays in contact with uncooled crystalliser to depth of amorphous frozen crystals zone. Then, deep etching of stub surface layer is performed to produce distinguished boundaries in relief structure between column grains of crystals.
EFFECT: casts with regular directed-crystalline macrostructure with crystallographic orientation (001) of mono crystals and number of grains making at least five.
3 dwg, 1 ex
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