METHOD FOR PRODUCTION OF HIGH-SPEED STEEL FROM WASTES OF WORN-OUT CUTTING TOOL Russian patent published in 2016 - IPC C22C38/18 B22D23/10 H05B7/07 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used in production of high-speed steel from lumpy wastes of worn cutting tools and die tooling by electroslag remelting. Lumpy wastes are preliminarily sorted and before welding are chosen so that ratio of weight fractions of used wastes of various grades of high-speed steel enables to obtain as a result a remelt, produced consumable electrode is remelted, and final ingot has chemical composition that differs from composition of initial lumpy wastes making up electrode.

EFFECT: invention widens possibility of using wastes of worn-out cutting tool from high-speed steel, which are part of a welding electrode, and enables to remelt wastes in a single-step process, that makes it possible to save electric energy and prevents burning out expensive alloying elements.

1 cl, 2 ex, 7 tbl