| 1. | For many years , the drying furnace has been adopted with sealed structure and electrical heated , dial instruments are used to control the temperature of the drying furnace and to keep it invariable . parameter setting is inputted by manual method , heating time is completely controlled by operators ’ experiences or their moods , meanwhile , its control function is singular , not only having no automatic heating time and insulating monitoring , having no drying process monitoring , but also having no function of automatic recording and report printing , the workers ’ labor intensity is bigger . thus two abnormal situations are always come forth , one is the insulating performance and intensity of works cannot be guaranteed reliably , it perhaps need to be dried repeatedly , the other is always to extend the drying time in order to ensure the drying quality
多年来干燥炉一直采用闷罐式结构和电加热方式,温度控制采用指针式温度控制仪表来实现炉温的恒定,其参数设定由人工输入,时间控制则完全凭操作者的经验、情绪来掌握,其控制功能单一,没有时间控制、绝缘自动监测功能,也没有干燥过程监视功能,更没有多要素记忆、打印存档功能,工人的劳动强度较大,所以就经常出现两种异常结果:一是工件的绝缘性能和强度得不到可靠保证,需要反复干燥;另一种是为保证干燥质量,往往要延长干燥时间。 |
