METHOD FOR COATING OF TUNGSTEN CARBIDE ALLOYS ON ROLLS OF ROLLING MILL AND ROLL OBTAINED BY SUCH METHOD Russian patent published in 2023 - IPC C23C4/129 C23C4/10 C23C4/02 C23C4/18 B21B27/00 

FIELD: rolling mills.

SUBSTANCE: invention relates to work rolls of a coated rolling mill. Method for applying a coating of tungsten carbide alloy to rolls of a rolling mill includes degreasing the surface of a rolling mill, heating rolls with a diameter of more than 500 mm to a temperature of 40-50°C, and rolling rolls with a diameter of less than 500 mm to a temperature of 80-100°C, applying a coating of tungsten carbide alloy containing molybdenum borides or chromium carbides by high-speed air-fuel thermal spraying, while propane at a pressure of 593-614 kPa is used as fuel, the molten material is fed to the spray gun using a carrier gas and sprayed onto the rolling roll using gun with feed rate from 1 to 8 kg/h.

EFFECT: invention is aimed at increasing the productivity of rolling rolls.

6 cl, 3 dwg