JPS5577911A - Edging mill - Google Patents

Abstract

PURPOSE:To prevent the generation of camber, and to manufacture the narrow slab with uniform good quality, by arranging the mill for reducing the thickness restricting the broadside spread of the rolled material, the mill for reducing the breadth, and the mill for reducing the thickness. CONSTITUTION:The continuously cast slab 11 delivered from the continuous casting machine 10 is introduced into the horizontal caliber mill 1 and is rolled by the reducing roll 5 provided with the flanges 4 consisting of the taper zone 2 and straight zone 3 on both sides of the roll 5, under the restriction on the broadside spread of the slab 11, so as to make the rolling reduction at the slab's broadside edge 11a to be larger than the rolling reduction at the middle of breadth of the slab 11b. Next, the slab 11 is fed into the vertical mill 6 consisting of two stages V1, V2, and is edged by the reducing roll 7 provided with upper and lower flanges, until it is formed into the required breadth. Then, the slab 11 is fed into the finishing mill 8, and is reduced in the thickness direction by the reducing roll 9 provided with the uniform diameter; hereby, the slab with specified shape is manufactured.