可控气氛是一种有机物质(主要是甲烷、丙烷或城市煤气等)不完全燃烧后的混合气体。就其工业分类可有吸热式气氛,放热式气氛以及氨分解气体等。目前在国外已被广泛用为热处理无氧化加热的介质,用为自动调节碳位的渗碳气氛以及材料的氰化等等。可控气氛在冶金、锻压等方面的应用也越来越多。使用可控气氛可以防止金属的氧化和烧损能大大提高材料的利用率;可以严格控制其质量显著提高工件的使用寿命;可以减少工件在加热过程中的脱碳及使表面光洁从而能减少工序提高生产率。总之,可控气氛已引起热处理生产的许多变革,出现了可控气氛热处理等新的技术领域。在近十几 The controlled atmosphere is a mixture of organic matter (mainly methane, propane or city gas, etc.) after the incomplete combustion. There may be an endothermic atmosphere, an exothermic atmosphere and an ammonia decomposition gas in its industrial classification. Currently in foreign countries has been widely used as the heat treatment of non-oxidizing heating medium, used to automatically adjust the carburizing atmosphere of carbon and cyanide materials and so on. Controllable atmosphere in metallurgy, forging and other aspects of the application is also more and more. The use of controlled atmosphere can prevent oxidation and burning of the metal can greatly improve the material utilization; can be strictly controlled its quality significantly improve the life of the workpiece; can reduce the decarburization of the workpiece in the heating process and make the surface smooth and thus can reduce the process Improve productivity. In conclusion, the controlled atmosphere has led to many changes in heat treatment production, and new technical fields such as controlled atmosphere heat treatment have emerged. Nearly a dozen