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Reheat Furnace



 
The reheat furnace brings the cold steel to the correct temperature for rolling. Temperature measurements here allow for optimised heating trajectories, providing considerable energy savings. Monitoring also ensures temperature uniformity and consistent product quality, reducing wastage.

Controlling the reheat furnace is key to reducing the costs of fuel and time needed for this stage. It also offers the final opportunity of checking the steel temperature before it enters the rolling mill. However, reflections from higher background temperature roof and walls can affect measurement accuracy. AMETEK Land MWIR-B-640 and NIR-B process thermal imagers both feature automatic background temperature measurement and reflection compensation abilities.

NIR-B Borescope design process thermal imager is easy to install via a narrow diameter hole through the furnace wall. The lens tip provides fields of view up to 90 horizontal degrees and offers a high resolution (656 x 484 pixels) thermal image. Temperatures can be measured anywhere within the scene. Unlike simpler devices the NIR-B imager design provides accurate temperature measurements anywhere from the centre of the thermal image all the way out to the corners of the image. A Certificate of conformity accompanies each NIR-B showing the calibration uniformity at various points across the imager scene. In this way multiple objects or areas in the scene can be defined and simultaneously provide accurate temperature readings.

The MWIR-B-640 enables a continuous and clear view, even through heavy smoke and hot furnace atmospheres, which is not possible with visual furnace camera systems. With a clear view through smoke and furnace gases, the MWIR-B-640 allows highly accurate and fully radiometric temperature measurement image data to be taken, stored, and trended over the lifetime of the furnace/boiler.

APPLICATION NOTE
Application Note - Temperature Measurement in Metal Reheat FurnacesTEMPERATURE MEASUREMENT IN METAL REHEAT FURNACES
Reheat furnaces bring cold metal to the correct temperature for rolling, extruding or forging. For optimum quality, and to reduce wastage, the temperature should be uniform throughout the product, which requires accurate temperature monitoring. Read More > 
 


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  • Documentations +

  • Videos +

    • Reheat Furnace Overview
      Reheat Furnace Overview

      Reheat furnaces bring cold metal to the correct temperature for rolling, extruding or forging. For optimum quality, and to reduce wastage, the temperature should be uniform throughout the product, which requires accurate temperature monitoring.

    • Improving Process Efficiency, Monitoring, and Control with Continuous High-resolution Thermal Imaging in Furnaces and Boilers
      Improving Process Efficiency, Monitoring, and Control with Continuous High-resolution Thermal Imaging in Furnaces and Boilers

      We introduces how ground-breaking advances in high-resolution thermal imaging in large furnaces and boilers dramatically improve process efficiency, monitoring and control. It will consider a wide range of continuous process monitoring and controlling applications, used in metal reheat, glass melt and reformer tube furnaces, cement kilns, and coal-fired power and biomass boilers, requiring highly accurate temperature measurement.

    • Advances in Non-Contact Temperature Measurement in Metal Reheat Furnaces
      On-demand Webinar

      We introduce how advances in accurate non-contact temperature measurements in metal reheat furnaces ensure optimum product quality, reduced wastage, energy savings, consistent metallurgical properties and minimal surface scaling. It considers the requirements and challenges for infrared temperature measurement in reheat furnaces for bringing cold metal to the correct temperature for rolling, extruding or forging