【摘要】 研究了20CrMnTi钢的快速压力渗碳工艺,分析了其机理。研究表明:提高渗碳炉内的压力,可提高气氛中的碳势,增大工件表面对活性碳原子的物理吸附速度,同时也可提高内扩散速度,从而提高此工艺的渗碳速度,缩短渗碳时间,提高生产效率。更多还原

【Abstract】 The paper studies rapid carburizing process for steel 20CrMnTi by increasing furnace pressure and analyses its mechanism. Study shows that by increasing furnace pressure, carbon potential in gas atmosphere is raised so that adsorption velocity of workpiece surface towards active carbon atom increases, meanwhile, diffusion velocity inside workpiece is also raised. Thus, the carburizing velocity enhances and time is shortened, productivity is improved also.更多还原