热镀锌炉鼻子高精度加湿系统控制实践OA

Zinc slag defects are mainly formed by the condensation of zinc vapor on the inner wall of the furnace nose,which affects the quality of the product.For this reason,a high-precision humidification system for suppressing zinc slag defects has been designed,in which nitrogen with precise humidity is fed into the interface between the furnace nose and the zinc pot in order to create a thin film of ZnO that prevents the zinc from being evaporated.The system consists of a hermetic vessel,a heater,an automatic regulating valve and a PLC control unit,which enables precise control of the nitrogen humidity and flow rate.Practical application shows that the system can effectively maintain the integrity of the ZnO film and improve the surface quality of hot-dip galvanized sheets.