FIELD: power engineering.
SUBSTANCE: vane comprises aerodynamically streamline bent airfoil portion with leading and trailing edges and shank portion. Lengthwise through starting hole is made on airfoil portion leading edge side. Said lengthwise starting hole is made by electric charge machining with the help of rotary discharge electrode. Thereafter, electric charge machining is further used along with discharge wire to cut out inner channel for working medium.
EFFECT: higher accuracy and reliability, reduced heat carrier leaks.
5 cl, 15 dwg, 1 ex
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