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一般都认为,在正常的渗碳过程中,渗碳箱中的渗碳剂应为零件重量的10～15%。计算表明,当装填的渗碳剂的比重(0.45)与钢的比重(7.84)差异很大时,渗碳剂将占箱容积的2/3～3/4。因而,为了获得正常的渗碳层,零件应占渗碳箱总容积的25～33～35%。关于箱中渗碳剂的必需量,至今尚无理论计算数值。装箱零件种类繁多、加热炉结构各异、渗碳温度条件的不一致,以及各种渗碳剂的不同特性,致使无法进行计算。但是,上述的渗碳剂(10～15%)与零件的重量关系,经过数十年实际工作的考验,能保证足够高的处理质量。并确定了零件在渗碳箱中一定的装
Generally agreed that in the normal carburizing process, carburizing carburizing box should be parts by weight of 10 to 15%. Calculations show that the carburizing agent will occupy 2/3 to 3/4 of the tank volume when the specific gravity of the loaded carburizing agent (0.45) differs from the specific gravity of the steel (7.84). Therefore, in order to obtain a normal carburized layer, the parts should account for 25-33% to 35% of the total volume of the carburizing box. There is no theoretical calculation about the amount of carburizing agent in the box. A wide range of packing parts, different furnace structure, carburizing temperature conditions are inconsistent, as well as the different characteristics of various carburizing agents, resulting in no calculation. However, the above carburizing agent (10 to 15%) and the weight of the parts, after decades of actual work tests, to ensure a high enough quality of treatment. And determine the parts in the carburizing box certain equipment