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首页> 外文期刊>Procedia CIRP >Influence of Threshold Based Process Control on Sinking EDM of a High Aspect Ratio Geometry in a Gamma Titanium Aluminide
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Influence of Threshold Based Process Control on Sinking EDM of a High Aspect Ratio Geometry in a Gamma Titanium Aluminide

机译：基于阈值的过程控制对Gamma铝化钛中高纵横比几何形状的下沉EDM的影响

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摘要

The demand for higher efficiency in aircraft propulsion engines leads to materials with increasing thermomechanical strengths. The intermetallic gamma titanium aluminides (γ-TiAl) are attributed a great potential in this field, but the machinability of γ-TiAl by conventional processes is challenging. One alternative manufacturing technology for these materials, especially for cavities with a high aspect ratio such as seal slots in turbine blades, is sinking EDM. Since the process stability in terms of a constant feed rate is not guaranteed for high plunging depths, this paper focuses on an experimental approach to investigate interdependencies between common process control strategies and process output parameters (e.g. feed rate, surface integrity) during the machining of cavities with high aspect ratios in the intermetallic alloy TNM-B1.
机译：飞机推进发动机对更高效率的需求导致材料具有增加的热机械强度。金属间γ-钛铝化物（γ-TiAl）在该领域具有巨大的潜力，但是通过常规方法对γ-TiAl的可加工性具有挑战性。对于这些材料，特别是对于具有高深宽比的腔体（例如涡轮机叶片中的密封槽）的一种替代制造技术是沉没EDM。由于不能保证在高切入深度下以恒定进给速度进行加工的稳定性，因此本文重点研究一种实验方法，以研究常见的加工控制策略与加工输出参数（例如进给速度，表面完整性）之间的相互依赖性。金属间合金TNM-B1中具有高深宽比的空腔。

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