In the production of carbon-manganese hot rolled steel strips, less than 6 mm thickness, the wound coil had a shape defect associated with coil collapse. The defect was overcome by the assessment of physical simulation of the associated phase transformations in the run out table using Gleeble. It was found that when the steel strips had a lower Ar₁ temperature than the coiling temperature, the occurrence of coil collapse was common. The coil collapse is due to the secondary phase transformation taking place during coiling and coil holding, where the liberation of the transformation heat softens the coil that leads to the coil collapse. Hence, by optimization of the hot rolling conditions such that the phase transformation is completed at the ROT before coiling, it is possible to avoid the coil collapse. Gleeble based physical simulation of the cooling pattern was correlated with the theoretical Ar₁ temperature to enable prediction of the coil collapse possibility. Based on the physical simulation of the different cooling conditions, imposition of the correct cooling condition at the industrial ROT enabled elimination of coil collapse. In addition to avoiding coil collapse, the production loss associated with 4 to 5 min holding at the down coiler was overcome.

在生产厚度小于6mm的碳锰热轧钢带时，卷绕的卷材具有与卷材塌陷相关的形状缺陷。通过使用Gleeble在跳出表中评估相关相变的物理模拟，可以克服该缺陷。发现当钢带的Ar ₁较低时温度高于卷取温度时，线圈塌陷的发生是普遍的。线圈塌陷是由于在线圈和线圈固定过程中发生了二次相变，在这种情况下，转变热的释放使线圈软化，从而导致线圈塌陷。因此，通过优化热轧条件使得在卷取之前在ROT处完成相变，可以避免卷取塌陷。基于Gleeble的冷却模式物理模拟与理论Ar _1相关温度，以预测线圈崩溃的可能性。基于不同冷却条件的物理模拟，在工业ROT上施加正确的冷却条件可以消除线圈塌陷。除了避免卷材塌陷之外，还克服了与向下卷取机保持4至5分钟有关的生产损失。