Method of sheet billet continuously casting and rolling to produce thin strip steel coil

Abstract

A method of using thin plate adobe continuous casting and rolling to producing thin band steel coil is provided, which belongs to rolling metal at once after continuous casting, in particular relating to thin standard band steel production method. The invention is characterized in that: a conticaster, a swing shear, a roller-hearth type heating furnace, a scale breaker, a vertical miller, 7 mill groups, laminar flow cooling device and reeling machine are connected to a CSP produce line, the produce line adopts reasonable temperature system, rolling equipment, rolling way and combining with cooling after rolling, the molten steel after continuous casting is a casting adobe of 50 to 70mm thick and 900 to 1300 wide, after cutting, heating, scale breaking, proceed continuous rolling to form a thin band of 1.2 to 1.5mm thick and 900 to 1300 wide, then after cooling to reel steel coil. The production flow is short, the equipment is few, the investment is less and the running expense is low; The technics and equipment is reasonable and high efficient, double locomotive and double flow casting, heating by two furnaces, seven rolling machines roll continuously, the production is smooth and saves energy with high production efficiency; the product performance is even and stable, the board shape is regular with high accuracy and good surface quality.

Description

technical field [0001] The invention belongs to the rolling of metals immediately after continuous casting, and in particular relates to a production method of thin-gauge steel strips. Background technique [0002] There are many varieties of hot-rolled steel strips, and they are widely used. With the development of manufacturing industries such as automobiles and home appliances, and as cold-rolled raw materials, the demand for thin-gauge strips is increasing, and thin-strip rolling has always been recognized in the field of hot-rolled strips. problem. The current production method of thin strips is a long-process production method. Steelmaking in steelmaking plants, continuous casting into billets, storage in warehouse after cooling, rolling in steel rolling mills, heating of cold billets and rolling. This method uses a lot of equipment, occupies a large workshop, and requires a lot of investment; the distance between continuous casting and rolling is long, the time inter...

AI Technical Summary

Problems solved by technology

It is true that there are some defects in CSP continuous casting and rolling, such as compact process layout and small buffer space; Accidents such as sudden wave stacking of steel and steel throwing at the tail during the rolling process may cause rolling waste, affect the product cashing rate and reduce the yield rate in the slightest, and cause damage to the roll and frame in severe cases, interrupt production, and affect production capacity play