Method and system for producing wide steel strip

A method for producing a wide steel strip with thin slab continuous casting and rolling, comprising the steps of:

• a) continuously casting a molten steel into a thin slab having a thickness of between 50 and 90 mm;
• b) cutting said thin slab into a fixed-length as needed;
• c) soaking said thin slab from the directions of the length, width, and thickness so as to control the temperature of said thin slab between 980 and 1150° C.;
• d) heating said thin slab according to the following situations:
• for a steel requiring an initial rolling temperature of between 980 and 1150° C., heating said thin slab by electromagnetic induction for between 6 and 12 min so as to maintain the temperature;
• for a steel requiring an initial rolling temperature of between 1151 and 1350° C., heating said thin slab by electromagnetic induction for between 1 and 2 min so as to achieve the temperature, and then maintaining the temperature for between 5 and 10 min;
• e) descaling said thin slab with high pressure water;
• f) conventionally rolling said thin slab at a temperature of between 980 and 1350° C., controlling the finishing temperature at between 750 and 980° C., and rolling said thin slab into a steel strip having the required thickness;
• g) cooling said steel strip with laminar flow to between 550 and 700° C.;
• and
• h) coiling said steel strip.