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目前,国外大部分气体渗碳炉采用吸热性载运气体(Carrier Gas)和天然气(沼气)。在连续式炉中实际上已经取消了使用未经稀释的碳-氢气。
At present, most overseas gas carburizing furnaces use carrier gas and natural gas (biogas). The use of undiluted carbon-hydrogen has virtually been eliminated in continuous furnaces.