A5053105682- Advanced machining processes and optimization
- Advanced Machining and Optimization Techniques
- Advanced Surface Polishing Techniques
- Erosion and Abrasive Machining
- Tunneling and Rock Mechanics
- Force Microscopy Techniques and Applications
- Quasicrystal Structures and Properties
- Additive Manufacturing Materials and Processes
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Advanced Numerical Analysis Techniques
- Contact Mechanics and Variational Inequalities
- Metal Alloys Wear and Properties
TU Dortmund University
2021-2024
The development of an optimized discontinuous drilling process Inconel 718 with reduced thermal loads is supported by a CFD simulation, whose application already resulted in improvements coolant flow. To consider the heat flow from chip formation into tool and fluid, numerical model must be expanded FEM simulation. Thus, its modulation results validated experimental work on mechanical are presented discussed. In following, export number interruptions will enabled favor heat-related wear due...
Abstract Using cooling lubricants in metalworking requires a high consumption of energy and resources. However, serve to increase the productivity quality these processes. Accordingly, it is necessary expand efficiency their application. This fundamental understanding working mechanisms. Driven by this motivation, publication compares six regarding lubrication effect orthogonal cutting. Three types fluid supply, each conducted on specific special machine tool for chip formation analysis, two...
Nickel-base alloys are proven materials in the fields of aerospace and oil industry, which is due to their characteristic material properties high temperature strength, toughness good oxidation resistance. These beneficial applications technical components general. However, they also represent challenges for machining. Especially while drilling Inconel 718, temperatures occur chip-formation zone that implicate thermal load thus, influence surface integrity, example, by causing white layers....
Metalworking operations rely on the successful application of metalworking fluids (MWFs) for effective and efficient operation. Processes such as grinding or drilling often require use MWFs cooling, lubrication, chip removal. Electrochemical machining processes electrolyte flow to operate. However, in those operations, a fundamental understanding mode action MWF is lacking due unknown dynamics its interaction with material removal during process. Important information behaviour can be...
Abstract Nickel‐based alloys, like Inconel 718, are widely used in industrial applications due to their high‐temperature strength and high toughness. However, machining such alloys is a challenging task because of thermal loads at the cutting edge thus extensive tool wear expected. Consequently, development new process strategies needed. We will consider discontinuous drilling with coolant. The main idea interrupt order let coolant flow around reduce loads. Since measurements inside borehole...
The novel process strategy of discontinuous drilling Inconel 718 was designed to reduce thermomechanical wear at the cutting edges. development is supported by creating a CFD simulation predicting characteristics coolant flow during process. In this context, validation required build foundation including subsequently influence chip formation and related temperature into numerical model. present paper introduces initial design fluid model experimental achieved high-speed recordings visualized...
Nickel-base super-alloys such as Inconel 718 are used for demanding applications in the industry. Their superior corrosion resistance and mechanical properties, especially under high heat pressure, make them very attractive highly stressed components. In contrast, their low thermal conductivity, work hardening tendency strength impose challenges machining. particular, occurring adhesion of workpiece material on tungsten carbide (WC) inserts tools is common hindering life. order to counteract...
Inconel 718 as one of the most common nickel-base alloys is mainly characterized by its high-temperature strength. Thus, in particular drilling subject to high tool wear due thermomechanical loads on cutting edges. To reduce those effects an alternative process design discontinuous was developed which contains a periodical interruption machining with aim targeted wetting and cooling at regular intervals. significant reduction thermal load should provide benefit extend life. Numerical...