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Process Heating - Temperature Measurement in Metal Reheat Furnaces

Tuesday, March 31, 2020

Process Heating - Temperature Measurement in Metal Reheat Furnaces
Read our latest article in Process Heating where Manfred Hayk, Global Infrared Product Manager, explains how the starting point for higher product quality is knowing that the temperature is homogenous and consistent and how thermal-imaging systems can deliver highly detailed images, which are fully radiometric, enabling accurate temperature readings within their entire field of view.

Reheat furnaces are responsible for bringing cold metal to the correct temperature for hot-forming applications such as rolling, extruding or forging. To optimize quality and reduce wastage, the temperature needs to be consistent throughout the product, which requires accurate temperature monitoring. In addition, temperature measurements are key to providing optimized heating trajectories for the metal, which results in significant energy savings, consistent metallurgical properties and minimal surface scaling. The most effective and accurate method of achieving these measurements is through thermal imaging.

Most steel mills and metal forging operations rely on reheat furnaces to ensure that metal slabs or billets reach a uniform, repeatable temperature prior to being sent to the rolling mills and forge presses. The purpose of the reheat furnace is to bring the product temperature up to the working level so that it can be rolled, extruded or forged.

There are two major types of reheat furnaces: continuous and batch. Each can use various heating methods, but the most common use either natural gas/methane or natural gas with oxygen enrichment.

Read the full article at Process Heating