SQUARE BILLET PRODUCTION METHOD Russian patent published in 2017 - IPC B21B1/02 

FIELD: metallurgy.

SUBSTANCE: method includes the manufacturing of the continuously cast slab and its multipass rolling. The multipass rolling is carried out in the rolls of the sheet mill with the relative reduction of not more than 35% and the total relative reduction not less than 40% in the roll of the rectangular section with thickness not exceeding 150 mm, at that using rollers with the smooth barrel of at least (B+150) mm width, where B is the width of the continuously cast slab, and then provide the automated longitudinal roll-out of the roll into the square blank with the side of the square from 90 to 150 mm by the gas-cutting machine at the pressure of combustible gas not less than 245 kPa and the cutting oxygen pressure of not less than 1400 kPa with the cutting speed of not more than 190 mm/min.

EFFECT: expansion of the sheet rolling mills equipment technological capabilities due to the production of the roll to produce the square billet without using the of the blooming-billet mills.

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