某型号柴油机零件衬套软氮化工艺研究

针对某型号柴油进排气挺柱部件衬套软氮化后,因没有考虑其变形,而直接装配使用,造成该部件工作过程中卡死,导致柴油机发生故障的问题,从衬套软氮化主要工艺参数着手,研究软氮化工艺参数对衬套表面白色化合物(耐磨层)深度及衬套变形的影响规律。根据研究结果改进了软氮化工艺参数,并结合调整机械加工工艺,使该零件的变形问题得到控制。

The Study of Tufftriding Technics of Parts Bush in Certain Model Diesel Engine

After the tufftriding processing of the bush of the intake and exhaust valve tappet, the part was stuck during the working process, which led to the fault of the diesel engine, for directly using without taking the deformation into consideration. Based on the major technics parameters of the tufftriding of bush, the influence of certain parameters on the depth of white chemical compound (abrasion resistant layer) and the deformation of bush were analyzed. The technics parameters of tufftriding were improved according to the results, and being accompanied of the modification of the machining technics, the deformation of the part was kept under control.