论文部分内容阅读
本文叙述了用红外线甲烷分析仪、红外线二氧化碳分折仪、直读式镜面露点仪和气相色谱仪测定以煤油为滴剂的井式炉渗碳的炉气变化过程。在弄清煤油滴入量和滴入时间对炉气组成、工件表面含碳量和渗碳速度影响的基础上,通过试验制订了缩短渗碳周期和进行碳势控制的渗碳工艺。并指出,通常生产上进行的煤油渗碳是在含有较大甲烷含量的氢基气氛下进行的。这种气氛在一定条件下能形成吸热型可控气氛以实现碳势控制。而目前所谓的渗碳过程的“排气”阶段没有反映出这一阶段的燃烧、热裂能和富化的实质。
This paper describes the determination of furnace gas carburizing furnace gasification process with kerosene as dropping agent by infrared methane analyzer, infrared carbon dioxide spectrometer, direct reading mirror dew point meter and gas chromatograph. Based on the influence of the amount of kerosene dropped in and the time of dropping on the composition of furnace gas, the surface carbon content and the rate of carburizing, the carburizing process of shortening the carburizing cycle and controlling the carbon potential was worked out. It was also pointed out that the conventional production of kerosene carburizing was carried out in a hydrogen-based atmosphere containing a large amount of methane. Under certain conditions, this atmosphere can form an endothermic controlled atmosphere to achieve carbon potential control. However, the so-called “exhaust” phase of the carburizing process does not reflect the essence of combustion, thermal cracking and enrichment at this stage.