Disadvantages of current induction heating furnace temperature measurement devices
Graphitization or high temperature treatment is one of the important procedures for preparing carbonization / graphitization and obtaining corresponding properties. Graphitization is an important means to improve or improve the microstructure and performance of materials, and it is also an effective way to improve and improve the impregnation efficiency and densification efficiency of composite materials. The degree of graphitization depends on the process. Temperature, so temperature measurement is the core of carbonization / graphitization or graphitization of graphite products. Its accuracy directly determines the effect of graphitization of materials.
Currently, dual-color infrared thermometers are widely used for temperature measurement methods above 1000 ° C in induction heating furnaces. The dual-color infrared thermometers can measure the radiant energy of target objects in two similar bands through two similar bands. The ratio of the radiant energy of the object to calculate the target temperature. The temperature measurement method has the advantages of high measurement temperature, fast response speed, high safety and the like. The graphitization process of carbon products is a process of removing impurities and crystal reorganization. The graphitization process is often accompanied by the removal of a large amount of free smoke and exhaust gas. The traditional temperature measurement channel is filled with a large amount of smoke. The dual colorimeter infrared thermometer collects temperature deviations. It is too large to even collect temperature data. In order to collect relatively accurate temperature data, the operator needs to repeatedly wipe the quartz lens on the temperature measurement window to eliminate the interference of the smoke from the infrared thermometer. With the increase of the operating frequency of the induction heating furnace, the heating cavity of graphite material is gradually powdered and consumed, and the flatness of the heating cavity will be unbalanced.
The temperature point shifts, and the consistency of temperature data collection is poor.