JETgroove - Groovinig and trepanning of titanium aluminides using abrasive waterjets

对能源效率和减少二氧化碳排放的要求正在增长，特别是在汽车、航空和电力行业。达到高要求的一个主要贡献是开发和实施高性能材料。由于钛铝化物的低密度和高温下恒定的力学性能，它在改善内燃机方面具有潜在的潜力。然而，钛铝化物材料在加工过程中刀具磨损较大，限制了其应用。对于合金的广泛工业应用，需要具有低刀具磨损的高效预成型操作。水射流技术是一种适用于难加工材料的制造工艺，具有高的、与材料无关的刀具寿命。通过在旋转对称的零件上巧妙地组合径向和轴向切槽，可以实现高效的预成形工艺。水射流技术的基础研究为钛铝化物的切割提供了高效的制造机会。研究项目的第一批结果允许将该方法应用于旋转对称的工件。在下一个研究周期内，应增加工件的可达到的几何复杂性。

The requirements for energy efficiency and reduction of CO2-Emissions are growing especially within the automotive, aeronautic and power industries. One major contribution for the attainment of high requirements is the development and implementation of high performance materials. Titanium aluminides have a potential for improving combustion engines due to their low density and the constant mechanical properties under high temperatures. However, the application of titanium aluminide is limited by the high tool wear during the machining of this material. For extensive industrial utilisation of the alloy an efficient pre-shaping operation with low tool wear is required. The water jet technology is a suitable manufacturing process for difficult to machine materials, regarding the high and material independent tool life time. Through deliberate combination of radial and axial kerfs in rotational symmetric workpieces an efficient pre-shaping process could be implemented. The fundamental research in the water jet technology adds an efficient manufacturing opportunity to the cutting of titanium aluminide. First results of the research project allow the application of the procedure for rotational symmetric workpieces. Within the next research period the attainable geometric complexity of the workpiece shall be increased.