基于plc的热处理车间的温度控制系统.doc

??热处理是***的一项重要基础技术,通常像轴、轴承、齿轮、连杆等重要的机械零件和工模具都是要经过热处理的。热处理对于充分发挥金属材料的性能潜力,提高产品的内在质量,节约材料,减少能耗,延长产品的使用寿命本设计主要介绍了烘房烘干的工艺过程及 PLC 在该系统中的控制应用。本设计采用三菱 FX2N 系列的 FX2N-32MR 做控制器,并配以 FX2N-4A D 模拟量输入模块和 FX2N-2DA 模拟量输出模块。该系统主要完成烘房开、关门的自动控制,完成工件在烘房低温区、高温区定时加热的控制,完成烘房温度自动检测与控制的全过程。该系统具有手动和自动两种工作方式,有必要的短路、过载、失压保护等功能。本设计工作稳定、可靠,设置、操作简单,生产设备的自动化程度高。使烘房对产品加工的质量得到提高,从而有效地提高了生产效率。关键词: PLC 控制系统; 热处理烘房;设计 2 Abstract Heat treatment is an important foundation for mechanical industrial technology, as is usually shaft, bearings, gears, mechanical linkage, and other important parts and molds were required to take th e heat treatment. Heat Treatment for giving full play to the performance potential of metallic mate rials, the intrinsic quality of their products, material savings, and reduce power consumption, exte nd product life, and improving economic efficiency are of great significance. Is the so-called "Perf ect tools are necessary for perfect jobs," then it must bea good the environment and advanced equ ipment for heat treatment, the whole is designing a proper heat treatment workshop. This design mainly introduces the drying room drying process and PLC control application in the system. This design adopts the mitsubishi FX2N series FX2N - 32 Mr - 001 controller, and matches by FX2N -4 AD analog input module and FX2N – 2DA analog output module. This system plete drying room open, closed automatic control, complete artifacts in the chamber periodically heating low temperature zone, high temperature control, finish the whole course of chamber temperature automatic detection and control. The system has manual and automatic two work modes, necessary for short circuit, overload, the pressure loss protection, etc. This design work is stable and reliable .T he establishment and operation is simple .T he production equipment automaticity is high. e nable the drying-house to obtain the enhancement to the product processing quality, thus effectively improving the produc t- tion efficiency. Key wor