用双温点立式炉烧成高性能PTCR陶瓷的工艺

Sintering technology for high performance PTC ceramic with double temperature range vertical furnace

以程控交换机过电流保护用高性能陶瓷ＰＴＣＲ元件作烧成对象，研究了应用自动连续式高温电阻炉对高性能陶瓷ＰＴＣＲ元件实施规模生产的工艺。调整双温点自动高温电阻立式炉的温度和下降传动速度可方便地得到合理的烧成曲线，改善ＰＴＣＲ材料的性能参数，并保证高的成品率和性能一致性。

he scale manufacture technology for high performance PTCR components is studied with an automatic progressive resistance furnace and the PTCR components for overcurrent protection in programmed exchanges as the sintering objects By adjusting the furnace temperature and the downward travel speed, the ideal sintering curve, improved properties of PTCR material, high yield and constant PTCR thermistor performances can be acquired(4 refs)