FIELD: metallurgy. SUBSTANCE: crystallizer has hollow water-cooled mandrel made in the form of sleeve with upper bottom provided with channels adapted for communicating mandrel cavity with cavity of hollow suspension. Channels allow hollow ingots with uniform macro-and microstructure to be produced by means of discharge mechanism. EFFECT: increased efficiency, simplified construction and improved quality of ingots. 2 cl, 2 dwg, 1 ex
