Abstract: Annealing furnace is an important equipment in metal heat treatment whose stability of temperature control and accuracy of control directly affect the product quality. Aiming at the needs of an enterprise, an intelligent control system of gas-burning annealing furnace based on PLC is developed by selecting configuration software and VB as the development tools. Through this system, the parameters can be set, the process data can be displayed in time, and the historical data can be saved for later use. Experimental results show that this temperature control system has characteristics such as high-precision, good dynamic performance, excellent control effect, energy saving and emission reduction.

Key words: Programmable Logic Controller(PLC), annealing furnace, temperature control

摘要： 退火炉是金属热处理中的重要设备，其温度控制的稳定性和控制精度直接影响产品的质量。以可编程逻辑控制器(PLC)为核心、以组态软件和VB为开发工具，结合某企业的实际需要开发燃气退火炉智能控制系统。在该系统中，天然气、空气流量和炉压采用模糊PID控制，可对工艺参数进行设置，对控制过程数据实时显示，并能保存历史数据。实践证明该系统控制精高，退火质量好，能达到节能减排的目的。

关键词: 可编程逻辑控制器, 退火炉, 温度控制

CLC Number: 

• TP391