一、绪言用流体对钢材进行冷却,是连续浇铸、热轧等生产中应用广泛的重要操作。长期以来,关于这种冷却的研究大多根据固体与流体间传热的观点来进行,在这方面正在积累生产分析和设计必需的传热系数的数据。笔者分析了对流传热阶段固体和流体间的传热现象,并提出了传热系数的理论值。冷却对钢材的组织、性能等金属学方面有重要的作用。例如近年来在控制冷却方面 First, the introduction of fluid cooling of steel, continuous casting, hot rolling and other production of a wide range of important operations. For a long time, research on this type of cooling has mostly been conducted from the viewpoint of heat transfer between solid and fluid. In this regard, data on the heat transfer coefficient necessary for production analysis and design are being accumulated. The author analyzes the heat transfer between solid and fluid in the convection heat transfer stage, and puts forward the theoretical value of the heat transfer coefficient. Cooling of the steel organization, performance and other metals have an important role. For example, in recent years in the control of cooling