Improvement of the machining characteristics in WEDM based on specific discharge energy and magnetic field–assisted method

2019 ◽  
Vol 103 (5-8) ◽  
pp. 3033-3044 ◽  
Author(s):  
Zhi Chen ◽  
Zhaojun Yan ◽  
Hongzhi Yan ◽  
Fenglin Han
Keyword(s):  
Magnetic Field ◽  
Discharge Energy ◽  
Specific Discharge ◽  
Specific Discharge Energy ◽  
Machining Characteristics

Calculation of the parameters of the magnetic-pulse connection of the tip and multi-wire cable

2021 ◽  
pp. 40-43
Author(s):  
N.V. Kurlaev ◽  
Zh.V. Samokhvalova ◽  
V.N. Samokhvalov
Keyword(s):  
Magnetic Field ◽  
Numerical Modeling ◽  
Calculation Method ◽  
Deformation Process ◽  
Necessary Conditions ◽  
Magnetic Pulse ◽  
Discharge Energy ◽  
Force Loading ◽  
Specific Discharge ◽  
Specific Discharge Energy

The main provisions of the calculation method and the results of numerical modeling of the process of compression of the tubular shell of the tip onto a stranded wire by the pressure of a pulsed magnetic field are presented. The analysis of the features of the deformation process at different intensity of force loading is carried out. The rational modes of loading and the necessary conditions for minimizing the specific discharge energy while ensuring a high assembly density are determined.

scholarly journals Thermal Modelling and Multi Decision Making Optimization of EDM of Non Conductive SiC-CNT Ceramic Composite Used for Li-ion Battery and Sensor

2021 ◽  
Vol 24 (2) ◽  
pp. 129-141
Author(s):  
Pallavi Chaudhury ◽  
Sikata Samantaray
Keyword(s):  
Ceramic Matrix Composite ◽  
Ceramic Matrix ◽  
Discharge Energy ◽  
Li Ion Battery ◽  
Conductive Material ◽  
Specific Discharge ◽  
Li Ion ◽  
Specific Discharge Energy ◽  
Pulse On Time ◽  
Work Domain

In this research work the thermal modeling of a nonconductive Silicon carbide Ceramic matrix composite (CMC) machined by Die Sinking Electric Discharge Machining (EDM) has been done. Though SiC is a non-conductive material but the presence of CNT makes it a conductive material which can be machined with EDM. The modeling procedure carried out by considering some realistic approach like Gaussian heat Flux, Specific Discharge Energy, Variable Latent heat etc. For this analysis a 2D continuum has been designed as work domain. By simulating the work domain model by a Finite Element Analysis (FEA) Software (COMSOL), material removal rate (MRR) has been estimated with variable thermal properties. Parametric analysis of effect of Variable Specific heat on MRR by considering different current, Voltage and Pulse-On time has been performed. The effect of different input parameters (peak current and Pulse-on time) on Crater geometry has been done. A new concept of Specific discharge energy has been introduced during modelling to make it a more realistic model which can also be used as electrode support for electrochemical energy devices as Polymer Electrolyte Membrane Fuel Cells on Li-ion battery. Desirability analysis has been done to get an optimize set of input parameters for I= 3A, V=30V, Ton= 75 µs for machining ceramic matrix composite by EDM. The optimized MRR at this setting is 7.25 mm3/min whereas PFE is 87%. The experimental analysis has been also performed to strengthen the thermal and mathematical modelling.

Study on machining characteristics of WEDM with ultrasonic vibration and magnetic field assisted techniques

2016 ◽  
Vol 234 ◽  
pp. 342-352 ◽  
Author(s):  
Zhen Zhang ◽  
Hao Huang ◽  
Wuyi Ming ◽  
Zhong Xu ◽  
Yu Huang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Ultrasonic Vibration ◽  
Machining Characteristics

Enhancing the Surface Quality by Iso Pulse Generator in EDM Process

2012 ◽  
Vol 622-623 ◽  
pp. 380-384 ◽  
Author(s):  
T. Muthuramalingam ◽  
B. Mohan
Keyword(s):  
Surface Finish ◽  
Material Removal ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Machining Process ◽  
Discharge Energy ◽  
Crater Volume ◽  
Machining Characteristics ◽  
Edm Process

In automobile and aeronautical industries, complex moulds and dies is produced by Electrical Discharge Machining process. The surface finish is determined by the crater volume in EDM process. The amount of crater volume is influenced by the amount and distribution of discharge energy. The discharge energy is directly proportional to the average discharge current. This amount of current is determined by the duration of discharging effect. This study deals about evaluating the performance of iso current pulse generator on machining characteristics in EDM. Due to its ability of reducing stochastic nature in EDM process, iso pulse generator could produce better surface finish than conventional transistor pulse train generator with higher material removal rate.

Effects of Magnetic Fluid on Machining Characteristics in Magnetic Field Assisted Polishing Process

2013 ◽  
Vol 797 ◽  
pp. 396-400
Author(s):  
Shao Hui Yin ◽  
Zhi Qiang Xu ◽  
Hong Jie Duan ◽  
Feng Jun Chen
Keyword(s):  
Magnetic Field ◽  
Surface Roughness ◽  
Magnetic Fluid ◽  
Material Removal ◽  
Magnetorheological Fluid ◽  
Magnetic Fluids ◽  
Magnetic Characteristics ◽  
Polishing Process ◽  
Magnetic Cluster ◽  
Machining Characteristics

Magnetic characteristics of three magnetic polishing fluids such as magnetic fluid (MF), magnetorheological fluid (MRF), and magnetic compound fluid (MCF) under magnetic field are experimentally investigated and analyzed. Their magnetic cluster structures under action of magnet field are observed, and their magnetic cluster models are established. Magnetic flied assisted polishing experiments for tungsten carbide are developed used these three kinds of magnetic fluids, material removal and surface roughness are respectively measured. At last, the machining characteristic of three magnetic fluids are contrasted and discussed according to experimental results.

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