Temperature Monitoring in Reheating Furnaces Using Borescope Type Thermal Cameras

Reheating furnaces used in the steel industry play a critical role in ensuring that billets and slabs reach the desired temperature under optimal conditions and at the right time. Proper temperature control during both billet and slab production is crucial for maintaining product quality and energy efficiency. This article details how borescope type thermal cameras are used to monitor temperatures inside the furnace track each product individually and explain how these technologies contribute to energy efficiency and improved quality.

Billet and Slab Temperature Monitoring with Thermal Cameras

Borescope type thermal cameras used in reheating furnaces provide real-time temperature monitoring during both billet and slab heating processes. The internal design of each furnace and the positioning of burners can vary significantly. Depending on the positioning and angle of the burners the correct height and optimal angle for thermal camera placement are determined. These cameras are installed in appropriate openings within the furnace to ensure continuous 24/7 monitoring of the products at the most effective angle. These cameras track the temperature of each billet or slab individually, from the furnace entry to exit capturing temperature data from the head, middle and tail sections.

This monitoring enables each product to be tracked as it moves through the furnace, allowing operators to verify whether the temperature is increasing uniformly. This billet and slab based temperature tracking helps detect potential imbalances or overheating within the furnace, optimizing the production process. Additionally, high resolution thermal cameras equipped with pneumatic systems are designed to protect themselves from exposure to high temperatures, preventing damage or burnout through emergency safety systems. These systems ensure the cameras maintain long term reliability and provide continuous, accurate monitoring.

Graphical Analysis and Energy Efficiency

Temperature measurements for billets and slabs are analyzed graphically to enhance energy efficiency throughout the production process. The temperature trends of each product are monitored to identify potential overheating or temperature fluctuations. The precise control of burner temperature ensures that each billet or slab remains within the required temperature range, thereby optimizing energy consumption while maintaining product quality.

Temperature Stability and Product Quality

By controlling the temperature of each billet and slab, thermal cameras ensure consistent temperature stability throughout the furnace. Minimizing temperature fluctuations is critical to ensuring that steel products meet desired quality standards. Thermal camera technologies ensure that the temperature across the head, middle and tail sections of each billet and slab is evenly distributed, thereby improving overall product quality and reducing the likelihood of defects during production.

Additionally, furnace atmosphere control allows for the regulation of oxygen levels and the monitoring of inert gases such as nitrogen and argon based on temperature analysis. This helps reduce oxidation, minimizing scale formation and surface defects on billets and slabs. By controlling the atmosphere, the surface quality of the products is improved, resulting in higher production standards.

Conclusion

Gensys Automation’s thermal camera solutions allow for the individual monitoring of each billet and slab during the reheating process in the steel industry. Gensys’s image processing applications provide full tracking, measurement and trend analysis for each billet and slab from furnace entry to exit. The data collected through these solutions allow for detailed analysis at every stage of the production process. This data can be integrated into systems ranging from PLCs to Level-1, Level-2, Level-3 automation as well as ERP and MRP systems, ensuring real-time recording, traceability, sustainability and control. These systems optimize energy efficiency, temperature control and product quality, supporting high performance and sustainability in steel production.

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If you want to learn more about how Gensys Automation And Machine Vision ’s steel quality measurement systems can enhance efficiency and quality control in your factory, please visit our website or contact us directly:

- Website: https://www.gensys.com.tr

- Email: Hakan Cihan Tosun - [email protected]

- Email: Mehmet ESEN - [email protected]

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