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On The Thermal Stress of Graphite Electrodes

Graphite electrodes are subjected to a number of stressors in an electric arc furnace (EAF). For example, one of the limiting factors in electrode current-carrying capability is the potential for thermal stress fracture, especially in the graphite near the arc. Therefore, better quantifying thermal stresses as a function of EAF conditions is critical for optimal EAF operation. Because there are no relevant standard tests, GrafTech investigated methods of heating graphite disks to quantitatively measure resistance to thermal fracture. This work will illustrate a connection between graphite thermal fracture and thermal loads such as electric current, with experiments and computer simulation.

DOI: 10.33313/389/081
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2025 AISTech Conference Proceedings
PR-389-077
Ryan M. Paul, Shad Shaikh, Bill Slye
May 04, 2025
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