Demands of the steel industry
Work rolls for skin passing mill
- Characteristic and properties of roll texture
- Cost-efficient process for texturing work rolls
- Lifetime of textured work rolls in production
- schedule free rolling
Texturing
Texturing
TOPOCROM® Texturing
The TOPOCROM® structure for texturing the work rolls are build up directly on the ground roll body by the special Topocrom® plating system
- Convex Texture
Conentional Texturing
Texturing
Conventional Texturing Technology
Texturing bx SBT, EDT or EBT:
- Concave Texture
- Texturing
- Conentional Texturing
Texturing of metal sheet
Advantages for the skin passing process
The TOPOCROM® textured metal sheet surface shows stochastically distributed cavities transferred by the skin pass roll. This sheet surface is especially characterized by variable surface topographies.
Advantages of TOPOCROM® textured metal sheet:
- long service life of work rolls
- high variability of the metal sheet structure
- Excellent painting and forming behaviour
- low long and short waviness
Work rolls
Quality and service life
- Very low Roughness Decrease and therefore long Life Time due to Hemispherical Surface Structure, Multilayer Design and due to the Hardness of Hard Chromium Coatings
- 3 - 5 times longer Life Time compared to EDT Rolls (+ hard chromium plated)
- Constant Product Quality with TOPOCROM Rolls from the beginning (no running in-time) High pressure cleaning of working rolls during operation is necessary
Schedule Free Rolling
with TOPOCROM® rolls
In applications with many roll changes, schedule free rolling is possible.
technical data:
- width: 1880 – 900 mm
- thickness: 2,0 – 0,35 mm
- max. skin-pass speed: 175 n/min
- wet skin pass only
- inline roll cleaning
- high pressure 200 bar
work roll performance:
- 6.000 to (high-strenght steele)
- 30.000 to (normal qualities)