为确保 4 0 5-1 7a齿轮的强度 ,提高其耐磨性 ,在新产品开发时 ,将最终热处理设计成 C、N共渗直接淬火。因该齿轮为内花键双联齿轮 (图 1 ) ,且形状复杂 ,C、N共渗直接淬火时其花键孔变形是难以把握和控制的 ,而且 ,用含碳氮有机液体做渗剂进行深层共渗 ,时间较长。为解决这两 In order to ensure the strength of 4 0 5-1 7 a gear and improve its wear resistance, the final heat treatment is designed as C, N co-permeation direct quenching during the development of new products. Because the gear is a double spline internal gear (Figure 1), and the shape is complex, C, N co-infiltration quenching directly when the spline hole deformation is difficult to grasp and control, and, with carbon-containing organic liquids penetration agent For deep infiltration, a long time. To solve these two