| 摘要 |
A method for cleaning and/or descaling a slab or a preliminary strip by a descaling device that has a nozzle, through which pressurized water is discharged onto the surface of the slab strip. The outlet of the nozzle is rectangular, or is slit-shaped and has an arcuate course at least in some sections, in the direction normal to the surface of the slab or strip, such that the water is discharged as a continuously strip-shaped jet across the entire width of the slab or strip. The width of the outlet of the nozzle in a conveying direction of the slab or strip is between 0.2 mm and 1.5 mm. The water is fed to the nozzle at a pressure between 5 bar and 50 bar. The distance between the outlet of the nozzle and the surface of the slab or strip is between 8 mm and 50 mm. |
