Mathematical models have been developed for the processing of static-cast steel ingots and are applied to investigate the mechanisms for the formation of panel cracks. Panel cracking is an intermittent but persistent defect that causes affected steel ingots to be scrapped. A two-dimensional, finite-element, heat-transfer model was formulated and employed to calculate the temperature distribution in both large and small steel ingots during the various processing stages from initial casting to the start of rolling, including solidification, cooling in the mold and in air, reheating in the soaking pit, and subsequent air cooling. The stress state in the ingot arising from the calculated temperature variations was then determined. This involved the development of a transient, elasto-visco-plastic, finite-element, thermal stress model, including the effects of phase transformation volume changes and kinetics, creep, and temperature-dependent, mechanical properties.
|Original language||English (US)|
|Title of host publication||Unknown Host Publication Title|
|Editors||Sindo Kou, Robert Mehrabian|
|Publisher||Metallurgical Soc of AIME|
|Number of pages||17|
|State||Published - Dec 1 1986|
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