论文部分内容阅读
针对某钢厂新建的热处理钢板气雾冷却装置,基于有限差分传热仿真计算,开发了相应的热处理钢板气雾冷却数学模型,其中详细考虑了钢板在冷却区内所经历的多种传热边界条件,包括水冲击传热、辊子接触传热、辐射传热和自然对流传热。通过现场的钢板表面温度测试工作表明,模型预测值与实际测试值之间的吻合情况较为良好,模型具有较高的仿真精度。应用该模型,按照一定的热处理工艺要求(主要指对出口温度和钢板表面/中心温降速率的控制),对气雾冷却区进行了冷却水表的理论设计(即各种厚度规格钢板所对应的冷却水流量),其设计结果已成功地应用于生产现场。
Aiming at the new heat treatment steel plate aerosol coolers in a steel mill, based on the finite difference heat transfer simulation, the corresponding mathematical model of aerosol cooling of heat treated steel plates was developed. The heat transfer boundary Conditions include water impact heat transfer, roller contact heat transfer, radiant heat transfer and natural convection heat transfer. Through on-site steel surface temperature test work shows that the predicted value of the model and the actual test values match well, the model has a high simulation accuracy. Applying the model, the theoretical design of the cooling water meter is carried out according to certain heat treatment process requirements (mainly referring to the outlet temperature and the control of the surface / center temperature drop rate of the steel plate) (corresponding to the thickness of the steel plate Cooling water flow), the design results have been successfully applied to the production site.