论文部分内容阅读
一、前言模具使用寿命主要取决于模具的服役状态而选择合理的材料及热处理工艺。制造摩托车辐条的打拉模具属于冷作模具,采用Cr12型冷作模具钢其寿命仍较低,本文拟对模具进行失效分析,选择不同材料和热处理工艺、进行实际考核,从而提出合理模具材料和工艺制度。二、失效分析制造辐条的打拉模具是由打拉锤、弹子和模子组成。通过打拉模的转动和辐条丝的推进冷轧,辐条直径由4.5mm减到3.8mm。打拉锤的工作面与弹子相摩擦,同时间断接触产生交变的冲击应力。长时间撞击后,模
First, the foreword Die life mainly depends on the service status of the mold and choose a reasonable material and heat treatment process. The manufacture of motorcycle spokes pull mold belongs to the cold work die, the use of Cr12 cold work die steel life is still low, this paper intended to failure analysis of the mold, select different materials and heat treatment process, the actual assessment, and thus propose a reasonable mold material And process system. Second, the failure analysis Manufacturing spokes to pull the mold is played by the hammer, marbles and mold components. The diameter of the spokes was reduced from 4.5 mm to 3.8 mm by the rotation of the drawing die and the advancing cold rolling of the spoke wire. Hammer hit the face with the marbles friction, intermittent contact at the same time produce alternating impact stress. After a long time hit, mode