| 摘要 |
PURPOSE:To improve the wear resistance of a shift fork, by applying high- density energy to the sliding surface of the tip claw part of the fork sliding along a gear coupling sleeve to form a hardened cementite layer and by forming a nitride layer on the cementite layer. CONSTITUTION:The sliding surface of the tip claw part of a shit fork made of cast iron sliding along a gear coupling sleeve is remelted using a high-density energy source such as laser, TIG arc or electron beams, and the surface layer of the sliding surface is converted into a hardened cementite layer. Nitridation is then carried out to form a nitride layer on the cementite layer. Thus, the wear resistance of the sliding surface of the tip claw part of the shift fork is remarkably improved. |
