Patent ID: 8703242

Claim:
A method for the hot-dip coating of a hot-rolled, low alloyed steel strip to obtain a hot-dip coated hot-rolled, low alloyed steel strip having a thickness tolerance relative to the center of the strip of +/−0.01 mm or better, whereby the hot-rolled, low alloyed steel strip passes through a processing line comprising a pickling station, a rinsing station, a drying station, a heating furnace and then a melting bath wherein the final thickness and the thickness tolerance of the hot-dip coated hot-rolled, low alloyed steel strip are achieved, after the hot-dip coated, hot-rolled, low alloyed steel strip has cooled down to 25° C. to 55° C., by a controlled thickness reduction in a rolling-mill stand in the processing line, whereby at least one thickness gauge located in the exit of the rolling-mill stand checks whether the final thickness has been achieved and any deviations upwards or downwards are fed back as a control signal for the adjustment of the rolling-mill stand so that the thickness reduction can be correspondingly increased or decreased so that the controlled thickness reduction in the hot-dip coated, hot-rolled, low alloyed steel strip lies in a range of 4% to 10% and with such a thickness reduction, the hot-dip coated, hot-rolled, low alloyed steel strip has an effectively increased yield point by up to 80 N/mm 2 and has an effectively increased tensile strength by up to 30 N/mm 2 over the hot-rolled, low alloyed steel strip.