Investigation of the surface morphology of cryogenically milled TiAl6V4 impeller (C05*)

低温研磨 TiAl6V4 叶轮 (C05*) 的表面形貌研究

• 批准号: 427557631
• 金额: --
• 依托单位: Lehrstuhl für Fertigungstechnik und Betriebsorganisation (FBK)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/427557631?language=en
• 关键词: Investigation; surface; morphology; cryogenically; milled

The objective of project is to improve the surface morphology of TiAl6V4 impeller. In addition to the controlled strain hardening of the workpiece surface layer, low surface roughness is to be achieved while maintaining narrow tolerance fields. A transient temperature model is created for the cryogenic milling process and the complex geometry of the impeller. The thermal expansion and contraction are calculated with this model. This enables the compensation of thermal influences by adapting the NC code. Thus, complex components can be milled dimensionally accurate and with improved surface morphology by means of cryogenic cooling. Another objective is to increase the productivity in roughing.

本课题的目的是改善TiAl6V4叶轮的表面形貌。除了工件表面层的受控应变硬化外，还应在保持窄公差范围的同时实现低表面粗糙度。建立了适用于低温铣削过程和复杂几何形状叶轮的瞬态温度模型。用该模型计算了材料的热膨胀和热收缩。这使得能够通过调整NC代码来补偿热影响。因此，通过低温冷却，复杂的部件可以在尺寸上精确铣削，并具有改善的表面形态。另一个目的是提高粗加工的生产率。