大型齿圈淬火温度场计算机模拟及畸变控制

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基金项目:

重大科技专项“高档数控机床与基础制造装备”（2009ZX04008-021-2）

Computer Simulation of Temperature Field and Distorsion Control of Heavy Gear Ring During Carburizing Hardened

1. Harbin University of Science and Technology, Material Science and Engineering Institute, Harbin 150040, China;
2. Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China

摘要: 通过ANSYS模拟软件对大型渗碳齿圈淬火冷却过程进行计算机模拟,得到了齿圈淬火时温度场的动态分布,进而求出齿圈和工装在塑性温度区的最大温差。利用该温差,运用金属材料的高温塑性及相变塑性理论,设计特殊的工装,使齿圈在二次淬火的同时能够自行修正渗碳时造成的椭圆,达到整圆和防止椭圆的目的,可以省去热处理后压力校圆工序。与常规的淬火后再进行压力校圆的方法相比,该方法畸变量小、生产质量稳定、工艺效率高、成本低,而且避免了热处理后校圆开裂现象。
- 计算机模拟 /
- 渗碳淬火 /
- 齿圈 /
- 畸变
Abstract: Based on simulating the cooling process of carburized large gear rings during quenching in ANSYS software,the map of temperature ftield during the quenching was obtained,and the maximum temperature difference between the workpiece and fixture in the plastic temperature zone was determined.The temperature difference,specially designed fixture and the work of metal high-temperature plasticity and transformation plasticity made the gear ring become round by itself while quenching.Thus the process to make the ring round by press could be eliminated after heat treatment and advantages of the quenching process such as less distorsion,high production efficiency,low cost and less crack etc is exhibited.
- Computer simulation /
- Carburizing hardened /
- Gear ring /
- Distorsion