COMBINED CAST AND ROLL UNIT AND METHOD OF ENDLESS MANUFACTURE OF HOT-ROLLED SMOOTHING STRIP Russian patent published in 2021 - IPC B21B1/46 

FIELD: metal casting.

SUBSTANCE: invention relates to continuous casting combined with rolling. According to the method of endless manufacture of hot-rolled steel smoothing strip in a combined cast and roll plant, the steel melt is poured into a thin slab form (3) with a liquid core 60 to 75 mm thick and 900 to 1700 mm wide in a straight mold (2) of the continuous casting machine (1). In the secondary cooling zone of the machine (1), the form (3) is softly reduced to a thickness of 50 to 70 mm, wherein the secondary cooling and the casting speed are adjusted using the control or regulation device (20) for complete solidification of the form (3) in the horizontal section (4c) of the movement unit (4). In the roughing train (8), the form is rolled in two passes resulting in a rolled strip (9) 10 to 30 mm thick, wherein the dummy bar is separated from and heated to a temperature of 1050 to 1250°C in an induction furnace (12). Scale is removed and rolled in the finishing train (14) in three passes. The finishing strip (15) 1.6 to 12 mm thick is cooled and rolled.

EFFECT: reduced constructive length and power consumption of the unit, improved quality of strip made of various grade steel.

16 cl, 6 dwg