scholarly journals A Tube Electrode High-speed Electrochemical Discharge Drilling Method without Recast Layer

Procedia CIRP ◽  
2018 ◽  
Vol 68 ◽  
pp. 778-782 ◽  
Author(s):  
Zhengyang Xu ◽  
Chenxiang Zhang
Keyword(s):  
High Speed ◽  
Recast Layer ◽  
Electrochemical Discharge ◽  
Tube Electrode ◽  
Drilling Method

Investigation of Circuit Parameters in Tube Electrode High-Speed Electrochemical Discharge Machining

2020 ◽  
Author(s):  
Yan Zhang ◽  
Islam Md. Rashedul ◽  
Lei Ji ◽  
Baoyang Jiang
Keyword(s):  
High Speed ◽  
Limiting Factors ◽  
Matlab Simulation ◽  
Machining Performance ◽  
Electrochemical Discharge Machining ◽  
Electrochemical Discharge ◽  
Tube Electrode ◽  
Rlc Circuit ◽  
Micro Holes ◽  
Selection Parameters

Abstract Tube electrode high-speed electrochemical discharge machining (TSECDM) has been effectively used in the manufactures of micro holes with difficult-to-cut conductive materials in the field of aerospace industry. The design and parameters of circuit are critical for the machining performances of TSECDM. In this paper, the influences of circuit on the TSECDM performances are studied. Firstly, a relaxation type RLC generator is designed and analyzed by MATLAB simulation. Secondly, the effects of RLC circuit parameters such a resistor (R), capacitor (C) and inductor (L) on machining performances are investigated by experiments on the bulk of SS304 alloys by limiting factors changing. Finally, the analysis achievement indicated that the circuit selection parameters value R (15Ω); C (220nF); L (0.13mH) can be used to obtain a better machining performance.

scholarly journals Effects of Helical Tube Electrode Structure on Mixed Machining Product Transfer in Micro-Machining Channel during Tube Electrode High-Speed Electrochemical Discharge Machining

Micromachines ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 634 ◽  
Author(s):  
Yan Zhang ◽  
Chen Wang ◽  
Yu Wang ◽  
Lei Ji ◽  
Jian Tang ◽  
...  
Keyword(s):  
Flow Field ◽  
High Speed ◽  
High Efficiency ◽  
Helical Structure ◽  
Tool Electrode ◽  
Electrode Structure ◽  
Electrochemical Discharge Machining ◽  
Electrochemical Discharge ◽  
Tube Electrode ◽  
Processed Products

In tube electrode high-speed electrochemical discharge machining (TSECDM), mixed products are constantly produced in the narrow machining gap by simultaneous discharge erosion and electrochemical dissolution. For the high-efficiency removal of these products from the machining gap, a tool electrode with an optimized helical structure was utilized in TSECDM in this study. Firstly, the concentration distributions of the processed products in the machining gap using tube electrode tools with three typical helical structures were studied through the simulation of solid–liquid coupling; this showed that a trapezoidal helical structure benefited the reduced accumulation of products in grooves and the effective removal of products from the machining gap. Secondly, the main geometric parameters of the trapezoidal helical structure, including the helical groove depth, pitch, and tooth angle, were optimized by gap flow-field simulation to enhance the removal effect on processed products. Finally, it was verified that the trapezoidal helical electrode showed a definitive and significant advantage over the ordinary cylindrical electrode in effectively removing processed products from the machining gap by the comparison of flow-field simulations and actual machining experiments.

Effects of dielectric fluids on surface integrity for the recast layer in high speed EDM drilling of nickel alloy

2019 ◽  
Vol 783 ◽  
pp. 95-102 ◽  
Author(s):  
Chaojiang Li ◽  
Xi Xu ◽  
Yong Li ◽  
Hao Tong ◽  
Songlin Ding ◽  
...  
Keyword(s):  
Nickel Alloy ◽  
Surface Integrity ◽  
High Speed ◽  
Recast Layer ◽  
Dielectric Fluids ◽  
Edm Drilling

A general high-speed laser drilling method for nonmetal thin material

2013 ◽  
Author(s):  
Zhijian Cai ◽  
Guangsheng Xu ◽  
Zhou Xu ◽  
Zhiqiang Xu
Keyword(s):  
High Speed ◽  
Laser Drilling ◽  
Drilling Method
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