1980年18届国际材料热处理年会上,首次提出直接制备和控制炉气以后,迅速引起各国热处理工作者的注意,目前这种方法已在大型可控气氛炉上应用于生产。直接制备炉气是将空气与天然气或丙烷气直接通入工作炉中,得到成分类似于吸热式气的炉气,用于保护加热、渗碳、碳氮共渗,并可准确而有效地控制碳势。这种方法 At the 18th International Conference on Heat Treatment of Materials in 1980, the first time that the direct preparation and control of furnace gas was first brought to the attention of heat treatment workers in various countries, the current method has been applied to large-scale controlled atmosphere furnaces. The direct preparation of furnace gas is the direct introduction of air and natural gas or propane gas into the working furnace to obtain the furnace gas with the composition similar to the endothermic gas for protecting the heating, carburizing and carbonitriding and can accurately and effectively Control carbon potential. This method