PRODUCTION METHOD OF CASTINGS IN INDUCTION FURNACE Russian patent published in 2017 - IPC F27B14/06 F27B14/10 B22D25/00 

FIELD: metallurgy.

SUBSTANCE: in the method provide the preparation, charge and melting of the stock in the melting pot with the bottom drain, the melting of the plug and the metal discharge into the mould, after charging the stock into the melting pot the oxygen-free flux is added, wt %: alumina 10÷12, fluorspar 7÷10, cryolite is the rest in the amount of 10÷15% from the mass of the stock. The plug is made of the material with the melting point at 100-200°C is higher than the metallic part of the stock, in the content of which it is taken into account, and its melting is carried out together with the stock. The melting pot and the mould is placed in the single female inductor, and the stock has the following composition, wt %: metal part 95÷97 and ferrosilicon 3÷5.

EFFECT: invention makes possible to improve the quality of the iron based castings by performing the melting in the flux protective medium during induction heating and introduction of the active alloying elements.

5 cl, 6 ex, 1 tbl, 5 dwg