Gnatushenko O. New technologies of the electroslag melting of noncompact wastes of aluminium and copper alloys and their refining.

Dissertation is devoted development of technologies of processing of incompact wastes of aluminum and copper alloys with the receipt of the high-quality second metals on the basis of the electro-slag crucible melting with the unexpended electrode. Set, that at correlation in a slag between a component which contains magnesium (karnallit) and refining component (cryolite) as (1,2 - 1,7) : 1, the concentration of magnesium in the alloy of АЛ25 is kept within the limits of 0,8-1,3. A salt slag is developed for melting of wastes of aluminum alloy of AЛ25, Д16 and AMг2, to composition %: 44…48 - NaСl; 25…30 - KСl; 10…15 - Na3АlF6; 12…18 - KСlMgCl2, which provides the stable conduct of process, safety of chemical composition of alloys, and their effective refining a from non-metal including and gases. Investigational conduct of alloying elements at melting of wastes of bronzes of KН1-3 and БрХ. It is shown that at support of concentration in the slag of MnO within the limits of a 2,8-5,0% maintenance of manganese in the bronze of KН1-3 remains within the limits of norm. For prevention of oxidization chrome in the bronze of БрХ it follows to support maintenance of Cr2О3 in a slag within the limits of 1,5-3,0%. Developed technologies of the electroslag smelting of bronzes of KН1-3 and БрХ from wastes of copper with alloying necessary elements from slag bath. Investigational quality of the got metals. Set, that after chemical composition they answer the aluminum alloys of brands of AЛ25, Д16 and AMг2 and bronzes of brands of KН1-3 and БрХ. For the bronze of KН1-3 the optimum modes of heat treatment, which allow to get a metal with the necessary set of operating properties, are certain.