铁素体轧制关键技术与机制研究现状

摘要：铁素体轧制是控制精轧过程在铁素体范围内的板带热轧工艺，与传统的“热轧-冷轧-退火”工艺相比，可以实现“以热代冷”，显著节约成本。然而对于一些短流程生产工序，粗轧和精轧之间的高冷速会影响产品的尺寸和组织均匀性，尤其是两相区较宽的低碳钢，更难实现全铁素体区精轧。总结了板带铁素体轧制的相关研究工作，结合各企业铁素体轧制工艺的特点，提出了铁素体轧制工艺参数及组织性能控制目标。围绕铁素体轧制技术应用的几个关键问题展开分析讨论，重点讨论了两相区变形的软化机制及对织构的影响机制，为今后铁素体轧制关键技术的开发提供理论指导。

Key technology and mechanism of ferrite rolling

Abstract： Ferrite rolling is a hot strip rolling process which controls the finishing rolling process within the ferrite range. Compared with the traditional “hot rolling cold rolling annealing” process, ferrite rolling allows “hot rolled sheet instead of cold rolled sheet”, resulting in significantly cost savings. However, for some short production processes, high cooling rates between rough rolling and finish rolling can affect the size and microstructure of the product. Especially for low carbon steels with a wide two phase area, it is more difficult to achieve full ferrite region rolling. Based on a summary of the recent work on ferrite rolling plates and strips, the research and application of ferrite rolling process at home and abroad were discussed. Combined with the design characteristics, the ferrite rolling process parameters and the corresponding microstructure and property control targets were proposed. Several key issues in the application of ferrite rolling technology were focused on. The softening mechanism of two phase deformation and its effect on texture were discussed in detail. It aims to provide theoretical guidance for the future development of key technologies and control ideas for the control of key processes.