Simulation Of Thermal Field In Laminar Flow Cooling Of Plate

Plate is an important species of the steel industry, it is widely used in many fields, so the steel industry is faced more and more stronger market competition. As the essential process after rolling, controlled Cooling Process will be have great influence on the organization of the final product and mechanical properties. So it has very important significance to research on the subject.This paper is focus on the Laminar cooling system of the WISCO, By using the Numerical Calculation software, Laminar fluid flow and heat transfer in the cooling process are investigated, and the average heat transfer coefficient is also Calculated. The temperature drop and temperature field distribution of the thickness direction are analyzed, In addition, the effects of various factors on the temperature field is simulated and analyzed, involving different cooling methods, different plate thickness, different speed of plate, different water ratio.The simulation results show that the FEM model can accurately reflect the temperature distribution of the plate in laminar cooling process. Cooling method, the thickness of the steel plate, roller speed, the water ratio and other factors have a greater impact on the temperature distribution of the thickness direction. Inappropriate Cooling strategy will have a bad influence on the microstructure and mechanical properties. The asymmetrical cooling of upper and lower surfaces has impact on flatness of the plate. So we should select the appropriate cooling strategy according to thickness and cooling rate.The analysis results can provide theoretical basis for the controlled cooling technology after rolling.