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阐述了航空大锻件宝状煤气加热炉控温系统的构成和控温模式。该系统选用ＳＴＤ总线工业控制机为主机．采用串级并联限幅控制模式．通过对炉内温度的采集及各温区煤气、空气流量和空／燃比的自动调整，对炉膛面积为９．８ｍ２的煤气加热炉三个温区的温度实现了自动控制．控温精度≤±７℃。
The composition and temperature control mode of the temperature control system for Bao-type gas furnace for aviation heavy forgings are described. The system uses STD bus industrial control machine as the host. Cascade parallel limiting control mode. Through the collection of furnace temperature and the automatic adjustment of gas, air flow rate and air / fuel ratio in each temperature zone, the temperature of three temperature zones of the gas furnace with a hearth area of 9.8m2 was automatically controlled. Temperature control accuracy ≤ ± 7 ℃.