PERSPECTIVES OF USING OF HIGH-SPEED STEELS FOR PRODUCTION OF CAST METAL-CUTTING INSTRUMENT. THE PECULIARITIES OF STRUCTURE AND CHARACTERISTICS OF CAST AND DEFORMED STEELS

Abstract

In the article there are examined the different ways of improvement of the structure and properties of the high-speed steels, intended for production of the cast metal-cutting instrument. It is shown, that effective methods of improving of impact elasticity of the cast high-speed steel are modification and accelerated cooling of melt at primary crystallization, electroslag remelting with using of magnetic field, and also using of steels with decreased structure dissimilarity.