一、概述福州无线电元件四厂是生产各种电容器的专业厂,其瓷介电容的烧结工作在隧道窑内进行,生产工艺要求窑内温度分布尽量均匀,稳定性好,控温范围在800～1400℃左右,整个窑最大加热功率120～140KW。该厂的窑温控制装置过去是外购仪表自己安装的,控制情况一般尚好。但当炉温达到1400℃时,仪表出现失控,不能正常工作。这不仅影响产品质量,甚至无法维持正常生产,因此,急需解决这一技术难关。 First, an overview Fuzhou Radio Components Factory is the production of four kinds of professional capacitor factory, the sintering of ceramic capacitors in the tunnel kiln, the production process requires kiln temperature distribution as uniform, good stability, temperature range of 800 ~ 1400 ℃, the maximum heating power of the kiln 120 ~ 140KW. The plant kiln temperature control device used to be purchased by the instrument itself, the control is generally good. However, when the furnace temperature reached 1400 ℃, the instrument out of control, can not work properly. This not only affects product quality, and even can not maintain normal production, therefore, urgent need to solve this technical difficulties.