TREATMENT METHOD OF HOT-ROLLED ROLLING UNDER BOLTS LANDING Russian patent published in 2010 - IPC C21D8/06 

FIELD: metallurgy.

SUBSTANCE: treatment method of rolling includes its primary calibration, bainitic hardening in saltpeter tank with following cooling on air and in water, secondary calibration, herewith before primary calibration hot-rolled rolling is annealed at temperature 770-790°C during 3-4 hours, is cooled with furnace up to 660-680°C, is isolated during 3-4 hours, it is cooled with furnace up to room temperature, primary calibration is implemented with co reduction ratio 14-24%, secondary calibration after bainitic hardening is implemented with reduction ratio 5-6%.

EFFECT: leveling of structure, mechanical and plastic properties by section and length of wire.

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