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目前,有越来越多的工厂在滴注式可控气氛渗碳或碳氮共渗的过程中,采用红外线CO_2分析仪对炉气的碳势进行连续测定和控制。实践证明,在用红外线CO_2分析仪的同时,再配备一台气相色谱仪对炉气的成分进行全分析,会取得更为完满的效果。因为在滴注式可控气氛渗碳或碳氮共渗中,只有当炉中的CO和H_2的含量基本稳定,而CH_4的含量又不大于某一数值时才能采用红外线CO_2分析仪对炉气的碳势进行一元化的控制。若要知道炉气中CO、H_2和CH_4的含量,应用气相色谱仪是个简便、速速而又准确的方法。除此以外,色谱分析仪
At present, more and more factories in the drip-controlled atmosphere carburizing or carbonitriding process, the use of infrared CO_2 analyzer for carbon dioxide gas furnace continuous determination and control. Practice has proved that the use of infrared CO_2 analyzer at the same time, then equipped with a gas chromatograph on the furnace gas composition of the full analysis, will achieve more complete results. Because in the drip-controlled atmosphere carburizing or carbonitriding, only when the content of CO and H 2 in the furnace is basically stable, and the content of CH 4 is not greater than a certain value, the infrared CO 2 analyzer can be used to measure the temperature of the furnace gas Carbon potential for a unified control. To know the content of CO, H_2 and CH_4 in the furnace gas, the gas chromatograph is a simple, rapid and accurate method. In addition, the chromatograph