中厚板冷却路径控制系统的开发

基于材料的固态相变理论,以钢材相变CCT曲线为基础,通过实例引入冷却路径控制思想.设计开发了冷却路径控制系统,动态设定关键点,灵活运用冷却策略和变粒度控制水流密度,进行了冷却路径柔性控制系统的设计开发.利用冷却路径控制系统仿真超级钢工业试验中的冷却路径,分析了不同组织性能产生的内在原因.为新钢种开发、冷却工艺优化提供了强有力的技术手段.

Development of Control System of Coolant Passage for Hot Plates

Based on the theory of material's solidifying transformation and CCT(continuous cooling transformation) curves of steel sections,an idea of coolant passage control was introduced into the plate cooling process with an exemplification given.A flexible coolant passage control system was then designed and developed by way of key units set dynamically,flexible cooling strategy and cooling water flow rate controlled to affect grain size.The control system was used to simulate the coolant passages in the industrial tests for the 400MPa super steel plates, and the results were analyzed for the inherent causes of different microstructures/properties of the plates.Thus,a powerful technology as the ways and means was provided for the optimization of cooling process especially the development of new steel grades.