Model Predictive Control of the Exit Part Temperature for an Austenitization Furnace
AbstractQuench hardening is the process of strengthening and hardening ferrous metals and alloys by heating the material to a specific temperature to form austenite (austenitization), followed by rapid cooling (quenching) in water, brine or oil to introduce a hardened phase called martensite. The material is then often tempered to increase toughness, as it may decrease from the quench hardening process. The austenitization process is highly energy-intensive and many of the industrial austenitization furnaces were built and equipped prior to the advent of advanced control strategies and thus use large, sub-optimal amounts of energy. The model computes the energy usage of the furnace and the part temperature profile as a function of time and position within the furnace under temperature feedback control. In this paper, the aforementioned model is used to simulate the furnace for a batch of forty parts under heuristic temperature set points suggested by the operators of the plant. A model predictive control (MPC) system is then developed and deployed to control the the part temperature at the furnace exit thereby preventing the parts from overheating. An energy efficiency gain of
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Ganesh, H.S.; Edgar, T.F.; Baldea, M. Model Predictive Control of the Exit Part Temperature for an Austenitization Furnace. Processes 2016, 4, 53.
Ganesh HS, Edgar TF, Baldea M. Model Predictive Control of the Exit Part Temperature for an Austenitization Furnace. Processes. 2016; 4(4):53.Chicago/Turabian Style
Ganesh, Hari S.; Edgar, Thomas F.; Baldea, Michael. 2016. "Model Predictive Control of the Exit Part Temperature for an Austenitization Furnace." Processes 4, no. 4: 53.