In aluminium strip rolling, temperature control is the foundation of quality.
From the moment the billet exits the furnace to the final rolling pass, maintaining the correct temperature ensures consistent thickness, prevents cracking and supports efficient production.
At
LAND, we help manufacturers achieve this control with
advanced infrared pyrometry designed for the dynamic conditions of strip rolling.
The Challenge: Temperature Control in Hot Rolling
As the billet is reheated and enters the rolling mill, it typically reaches around 600 °C. During rolling, the strip becomes longer and cooler, while surface finish changes with each pass. These shifts affect emissivity, making accurate temperature measurement more complex.
Without proper monitoring, the strip can cool too quickly, leading to unexpected changes in its thickness and metallurgical properties. Continuous temperature tracking is essential to detect mill issues early and maintain product integrity.
The Solution: Real-Time Measurement Throughout the Process
To manage these challenges, temperature should be measured on both sides of the reversing mill. LAND’s
SPOT+ AL pyrometer, operating in Strip Mode (S-Mode), delivers reliable, real-time data that supports process control and helps operators respond quickly to any deviations.
Recommended Product:
•
SPOT+ AL
Customer Experience and Benefits:
“Using the SPOT+ AL in S-Mode has helped us reduce finishing costs, identify mill problems early and improve overall product quality. It’s a key part of keeping operations efficient and scrap levels low.”
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The Challenge: Temperature Control in Cold Rolling and Coiling
Cold rolling and coiling is performed at much lower temperatures than hot rolling and delivers a final product with improved surface finish, shape and thickness accuracy.
However, aluminium strip is highly reflective and moves quickly during coiling, making traditional temperature measurement methods nearly impossible.
Reliable temperature monitoring ensures the finished coil meets dimensional and surface specifications and helps detect any quality issues before dispatch.
The Solution: Thermal Imaging for Cold Rolling and Coiling
LAND’s
LWIR-640 thermal imaging system uses a wedge measurement technique to overcome the challenges of reflectivity and variable emissivity.
By measuring between the roll and the product or at the coiler, it eliminates background reflections and provides accurate temperature data for process control.
Recommended Product:
•
LWIR-640
Customer Experience and Benefits:
“Real-time temperature monitoring with the LWIR-640 allows for accurate speed adjustments based on coil temperature. Detecting wedge hot-spot temperatures helps identify quality issues before dispatch and improves traceability.”
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Conclusion
Aluminium rolling and coiling demand precision at every stage. With LAND’s
infrared pyrometers and
thermal imagers, manufacturers gain the clarity and control needed to optimise performance and ensure product quality.
Click here to learn more about LAND’s temperature measurement solutions.