TAILIEUCHUNG - Assessment of abrasion-assisted material removal in wire EDM

(BQ) Machining speed and surface integrity continue to be issues of focus in current wire EDM research. In this light, the proof-of-concept of a hybrid wire EDM process that utilizes a wire embedded with electrically non-conducting abrasives is presented. Material removal in this novel process is realized through electrical erosion that is augmented by two-body abrasion. This is shown to bring about a significant improvement in the removal rate and generate surfaces with minimal recast material, in comparison to an equivalent wire EDM process. Implementation details and process characteristics are discussed. | CIRP Annals - Manufacturing Technology 57 (2008) 195–198 Contents lists available at ScienceDirect CIRP Annals - Manufacturing Technology journal homepage: Assessment of abrasion-assisted material removal in wire EDM I. Menzies, P. Koshy (2)* Department of Mechanical Engineering, McMaster University, 1280 Main Street West, Hamilton, Canada L8S 4L7 A R T I C L E I N F O A B S T R A C T Keywords: Abrasion Wire EDM Hybrid Machining Process Machining speed and surface integrity continue to be issues of focus in current wire EDM research. In this light, the proof-of-concept of a hybrid wire EDM process that utilizes a wire embedded with electrically non-conducting abrasives is presented. Material removal in this novel process is realized through electrical erosion that is augmented by two-body abrasion. This is shown to bring about a significant improvement in the removal rate and generate surfaces with minimal recast material, in comparison to an equivalent wire EDM process. Implementation details and process characteristics are discussed. ß 2008 CIRP. 1. Introduction Since its inception in the early seventies, concerted research efforts from industry and academia have elevated wire EDM (WEDM) performance to impressive levels in terms of machining speed, accuracy and machined surface integrity. These advances are primarily due to improvements relating to solid-state generator technology with anti-electrolysis and pulse shaping capabilities, various wire configurations and coatings, effective flushing techniques under submerged machining conditions, and advanced adaptive control strategies [1]. Current WEDM capability with reference to maximum workpiece height and taper, machining accuracy and surface finish are largely consistent with component requirements in typical applications appropriate to the process. Significant progress notwithstanding, it is desirable to improve the metallurgical quality of the machined .

• Cơ khí - Chế tạo máy
• The EDM process
• Wire EDM
• Abrasion assisted material removal
• Hybrid Machining Process
• Material removal
• Thermo physical modeling
• Die sinking EDM process
• Electrical Discharge Machining
• Parametric studies on EDM process
• Electro Discharge Machining
• Electrical process parameters
• State of art in EDM process
• Material Removal Rate
• Micro EDM
• Macro EDM
• The ratio of energy consumed
• The material removal characteristics of EDM
• Characteristics of EDM
• The influence of the dielectrics
• Ti 6Al 4V
• Fuzzy technique
• micro EDM process parameters
• Inkjet nozzles of printers
• Automobile to biomedical
• Transparent electrode
• EDM gap phenomena
• The removal mechanism
• Support vector machine
• Particle swarm optimization
• Modeling of EDM responses
• The electrical discharge machining
• The EDM processes
• Surface Roughness
• Machine Process Parameters
• The Surface Roughness in EDM
• Comparison of optimization techniques for MRR
• Surface roughness in wire EDM process for gear cutting
• Wire EDM process for gear cutting
• Wire feed rate
• Pulse off time
• Electrode wear
• The EDM of silicon carbide
• Silicon carbide
• Die sinking EDM
• Ceramic composite
• The effect of multiple discharges
• Thermal model
• Roughness prediction
• Predictive model
• Discrimination of discharging pulses
• System identification
• Energy distribution
• Sinking electro discharge machining
• Mathematical model
• Grey relational analysis
• Process Parameters
• The Optimal Combination
• Metal matrix composite
• Optimization of Machining Parameters
• Sintered Copper Electrodes
• Design of Experiment
• Multi criteria decision making of machining parameters
• The responses of MRR
• The responses of Ra
• The responses of OC
• Process parameters of wire cut
• 90CrSi tool steel
• Wire cut EDM
• Tool steel machining
• AISI P20 tool steel
• Fuzzy TOPSIS
• Sensitivity analysis
• Temperature stability
• Duty factor
• Titanium alloys
• Taguchi methods
• Ideal function
• Orthogonal array
• Statistical analyses