METHOD AND DEVICE TO PRODUCE METAL STRIP Russian patent published in 2010 - IPC B21B1/46 

FIELD: process engineering.

SUBSTANCE: invention relates to production of hot-rolled steel strip and aims at increasing quality of said strip. Proposed method comprises normal ingot making to produce particularly thin slab with fluid core at 4 to 16 m/min rate. Slab narrow side thickness makes 15 to 50 mm. Slab central part has a bulge. Then vertical pre-rolling device reduces slab thickness to make it flat. Hardened slab is subjected to first process of light rolling with the help of drawing rollers moved into horizontal position for slab to be subjected to second process of light rolling with the help the other drawing rollers. Now it is subjected to heating in inductor, scale removal from its surface and a number of successive reduction is rolling mill. Said mill consists of at least three stands to allow maintaining slab temperature during all stages of above described process at the level of Ar3 re-crystallisation. Proposed device incorporates appropriate equipment. Right behind rolling mill, there are roller conveyor with cooling spraying devices, flying scissors to cut strips of required length, drawing rollers and at least two hot down coilers.

EFFECT: continuous and flexible process, compact and simple design, high quality of strip.

31 cl, 7 dwg, 5 ex