CSP® furnace

Minimills

Furnace technology

Efficient heating and slab transport with special cooling rolls

Integral to the CSP® plant, the roller hearth furnace is the logistical and technological link between continuous caster and rolling mill. The first zone in the upward of 1,100 °C furnace sets the thin slab temperature required for the rolling process. It does this using eco-friendly ultra-low NOx burners. To save energy, recuperators recover waste heat from the furnace. This energy then preheats the combustion air.

Next, the downstream homogenizing zone keeps the temperature at a constant level and harmonizes it over the cross-section and length of the slab. This ensures a homogenous temperature distribution. That's vital for optimized rolling and high-quality finished products.

Special water-cooled rollers transport the thin slabs through the furnace. They prevent heat dissipation, further boosting the energy efficiency of the furnace. Your customers demand excellent final product surface quality. This is where our newly developed calculation module comes in. It reduces the contact pressure between roller support rings and slab. Another stand-out feature in our CSP® furnace is the SMS Dynamic Furnace Control (DFC) Level-2 process automation system. You benefit from uniform slab heating to the required target temperature without wasting energy.

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Dynamic furnace control

Dynamic furnace control

Energy savings and higher production capacity in CSP® furnaces

Our Dynamic Furnace Control (DFC) Level-2 process automation system is an integral part of SMS group's energy saving and high production strategy. Installed in your CSP® furnace, it ensures uniform slab heating to the required target temperature without wasting energy. You can apply different strategies to heat up and accelerate the slab. This is how you benefit from various operational advantages.

Invaluable here is that the DFC system calculates the 3D temperature distribution for each slab as well as the buffer time. Furthermore, the model ensures effective emptying of the furnace after roller changes by defining the slab sequence for rolling. The system continuously communicates with CSP® furnaces level 1, level 3, CSP® caster level 2, and CSP® mill level 2. It generates reports and diagrams to support monitoring and furnace control.

You benefit from

  • Energy saving due to reduced setpoint temperatures for the furnace zones
  • Reduced wear on rollers and slabs by shifting the setpoint for the acceleration roll
  • Higher yield due to avoidance of slab cutting by early acceleration of the slabs
  • Effective emptying of the furnace after roller changes by defining the slab sequence for rolling
  • Automatic communication with other automation levels and modules (Industry 4.0)
  • Automatic generation of reports and diagrams
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The system efficiently calculates and controls each heating process for every slab.