目前,钢件的渗碳过程,一般是在固定碳势或阶梯式下降碳势的条件下进行的。例如,不久前,苏联雅罗斯拉夫汽车厂,就是在碳势阶梯式下降的条件下,对变速器零件进行渗碳的。在此渗碳工艺中,热处理工段无马弗炉中各个区域内工作气体消耗量如下 At present, the carburizing process of steel parts is usually carried out under the condition of fixed carbon potential or step-down carbon potential. For example, not long ago, the Yaroslavl Automobile Works of the Soviet Union carburized the transmission components under the condition of a step-down carbon balance. In this carburizing process, the heat treatment section without muffle furnace gas consumption in all regions as follows