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Intro; Abstract; Zusammenfassung; Vorwort; Table of Contents; Formula Symbols and Abbreviations; 1 Introduction; 2 State of the Art; 2.1 Fundamentals of Turning Difficult-to-Cut Materials; 2.1.1 Machinability of Titanium Alloys; 2.1.2 Machinability of Nickel-Based Alloys; 2.1.3 Machinability of Stainless Steels; 2.1.4 Coolant Supply Strategies in Cutting Technology; 2.2 Application of High-Pressure Coolant Supply in Metal Cutting; 2.2.1 Operating Principle and Acting Mechanisms; 2.2.2 Tooling and Machinery; 2.3 Potential of High-Pressure Coolant Supply.

2.4 Influence of High-Pressure Coolant Supply on Surface Integrity2.5 Interim Conclusion and Research Demands; 3 Objective, Approach and Research Concept; 4 System Analysis and Concept of an Explanation Model; 4.1 Definition of the System Boundary; 4.2 Approach for Development of an Explanation Model; 4.3 Definition and Classification of Surface Anomalies; 4.4 Identification of Relevant Influencing Parameters; 4.5 Interim Conclusion for the Theoretical Approach; 5 Empirical Analysis of Cause-and-Effect Relationships; 5.1 Experimental Set-Up; 5.1.1 Material and Tool Characterisation.

5.1.2 Process Conditions and Measuring Equipment5.2 Empirical Investigation of Primary Surface Anomalies; 5.2.1 Influence of Coolant Parameters on Thermal Tool Load; 5.2.2 Influence of Tool Geometry and Supply Variant on Thermal Tool Load; 5.2.3 Influence of Coolant Parameters on Mechanical Tool Load; 5.2.4 Influence of Coolant Parameters on Tool Wear; 5.2.5 Influence of Jet Guidance Geometries on Tool Wear; 5.2.6 Influence of Coolant Parameters on Surface Quality; 5.2.7 Interim Conclusion for Primary Surface Anomalies; 5.3 Empirical Investigation of Secondary Surface Anomalies.

5.3.1 Fluid Technical Analysis of High-Pressure Coolant Supply5.3.2 Simulation of Chip Formation with High-Pressure Coolant Supply; 5.3.3 Chip Breakage Mechanisms in High-Pressure Coolant Supply; 5.3.4 Kinetic Energy of Coolant Jet for Efficient Chip Breaking; 5.3.5 Interim Conclusion for Secondary Surface Anomalies; 5.4 Empirical Investigation of Tertiary Surface Anomalies; 5.4.1 Identification of Impact Mechanisms during Chip Collision; 5.4.2 Energy Balance of the System Chip and Workpiece; 5.4.3 Identification of the Deformation Energy transferred to the Workpiece.

5.4.4 Influence of Impact Parameters on Surface Quality5.4.5 Intensity Assessment of Tertiary Surface Anomalies; 5.4.6 Interim Conclusion for Tertiary Surface Anomalies; 5.5 Interim Conclusion for Empirical Investigations; 6 Explanation Model for Occurrence of Surface Anomalies; 6.1 Derivation of an Explanation Model for Surface Anomalies; 6.2 Anomaly-free Machining with High-Pressure Coolant Supply; 7 Application of the Explanation Model; 7.1 Case Study: External Longitudinal Turning of Ti6246; 7.2 Innovative Approach of Pulsating High-Pressure Coolant Supply.

7.3 Summary and Interim Conclusion.