激光淬火曲轴轴颈硬化层深度分布计算

Calculation on the Distribution of Laser Hardening Depth for Laser Hardening Crankshaft Neck

本文介绍了曲轴激光淬火强化技术 ,采用千瓦级快速轴流式激光器对球铁曲轴进行了激光淬火试验。通过建立非稳态温度场模型 ,探讨了曲轴激光淬火时主轴颈处淬硬层深度沿激光扫描方向分布不均匀等问题 ,运用本模型可以在计算机上直接优化激光淬火工艺参数 ,避免了传统优化方法的不足。分析表明 。

The laser hardening technology used for crankshaft is introduced and the investigation on surface hardening of a nodular iron crankshaft was carried out by using a kW CO 2 laser system.By building the temperature field mold,we explained the phenomenon that the laser hardening depth is not dispersed averagely along the direction of laser movement on laser hardening crankshaft neck . By this temperature field mold we can optimize technical parameters of laser hardening on computer directly instead of by conditional methods. Theoretical calculation is consistent with the experiment.