轧辊差温热处理炉系统设计

来源期刊：冶金自动化2009年第5期

论文作者：胡玲艳 唐锴 孙逊 姜连芳

文章页码：58 - 61

关键词：差温热处理炉； PLC； 脉冲燃烧控制

Key words：rapid heating furnace； PLC； pulse burning control

摘    要：差温热处理炉是针对轧辊表面进行快速加热的一种新炉型。介绍了开式炉体设备,炉壳传动系统,燃烧、供风及排烟系统,轧辊支撑旋转系统以及冷却水套设备等的功能。系统采用西门子S7-300 PLC完成整个控制过程,上位机监控系统可直观显示整个系统的实时运行状态和各主要参数。为保证控温效果的均匀性,系统对炉体进行分区控制,各区采用先进的脉冲燃烧控制技术。实际运行结果表明,系统性能稳定,温度控制精度高,节能显著,很好地满足了工艺上的要求。

Abstract: Rapid heating furnace is a new kind of furnace used for roller surface heat treatment.According to technical requirements of the system,some advanced design methods of furnace structure are analyzed,for example,bi-open furnace body,driving system of furnace shell,burning,wind and exhaust smoke system,roller supporting system and cooling water devices etc.Control functions and temperature control mode are introduced.Simatic S7-300 PLC is used as kernel control unit to realize the whole automatic control process.By computer supervisory system,real time states of furnace and its parameters can be displayed directly.Temperature is the key parameter to control.In order to make temperature equal,the furnace is divided to two zones.Advanced pulse-burning control is applied in each zone.The actual application shows that the furnace performance is stable and temperature control accuracy is high.Energy saving effect is remarkable and the whole system meets the need of technological process perfectly.