Patent ID: 8562766
Filing Date: 2013-10-22
Classification: B21B

Abstract:
1. A method of producing a thin cast steel strip having a surface roughness of less than 1.5 microns Ra, the method comprising: a. introducing molten steel between a pair of casting rolls having a nip there between; b. counter-rotating the casting rolls to form solidified metal shells on the surfaces of the casting rolls and to form an intermediate cast steel strip through the nip between the casting rolls from the solidified shells; c. introducing the intermediate cast steel strip to a hot rolling mill having back-up rolls and work rolls with work surfaces forming a gap between the work rolls through which the intermediate cast steel strip is rolled; d. applying a mixture of oil and water directly on the back-up rolls of the hot rolling mill, the mixture of oil and water being transferred from the back-up rolls to the work rolls through engagement of the back-up rolls and the work rolls; and e. rolling the intermediate cast steel strip between the work rolls having the mixture of oil and water thereon to produce the thin cast steel strip having a surface roughness of less than 1.5 microns Ra.