根据炉子的负荷及渗碳表面积的变化而进行碳势的自动控制,乃是非常重要的。因为在这种情况下有关丙烷的必要添加量,只是获得了一些不充分的经验数据。关于炉气控制的各种可能性,可参阅文献(4)(5)。如果不进行碳势的自动控制,则丙烷的供给量只能建立在经验或不成熟的实验基础上,这在所得到的结果上必然有很大的误差。 It is very important to control the carbon potential automatically according to the load of the furnace and the change of carburizing surface area. Because in this case the necessary amount of propane to be added, only to obtain some inadequate empirical data. For various possibilities of furnace gas control, see literature (4) (5). Without the automatic control of carbon potential, the supply of propane can only be based on empirical or immature experiments, which inevitably leads to large errors in the results obtained.