Simulation Analysis of Temperature Field of Tinplate in the Quenching

To reduce the defect of quench stain on tinplate's surface in the reflow section of the tinplating unit, based on the equipment and process parameters, the quench stain was analysed and the treatment strategy was proposed, which added nozzles to hasten the heat exchange of the strip into the quenching tank.A three-dimensional finite element model was constructed by Creo and ANSYS to reduce the correction rate of quench stain and reveal the temperature field of tinplate in quenching tank.The factors of quenching time, nozzle jet speed, nozzle angle, nozzle pressure, and nozzle size on the tinplate temperature field were analysed.Results show that the temperature field of the tinplate is relatively uniform when the nozzle jet speed of the nozzle is 1m/s, the nozzle angle is 15°, the nozzle pressure is 0.3 MPa, and the nozzle size is 5 mm.The quenching equipment is reformed to verify the result of the simulation.The defect correction rate of quench stain on the strip decreases from 1.79 % to 1.03 % in the tinplating unit, which meets the accuracy of the simulation analysis.The obtained conclusions provide a reference for treating quench stain in the tinplating unit.