نتایج جستجو برای: electric discharge machining

تعداد نتایج: 251277  

2014
Anu Anand

WEDM is one of the important variants of electrical discharge machining (EDM) which uses the thermal energy generated between the electrodes for machining the electrically conducive materials. This method has been successfully implemented in common materials like aluminum, stainless steel etc., But its application in super alloys like Ti6Al4V is still under investigations. This paper reviews th...

2015
T. Ponvel Murugan T. Rajasekaran

There is an increasing demand for industrial products, not only with the increased number of functions and also there will be a requirement of product in reduced size. Hence, it is essential to develop a product with maximum functions and minimum size. Micromachining technology gives the best solution to develop the product with maximum number of functions and also the size of the product will ...

Journal: :Dental materials journal 2012
Koichi Yamaki Yu Kataoka Fukunaga Ohtsuka Takashi Miyazaki

Titanium surfaces processed by wire-type electric discharge machining (EDM) are microfabricated surfaces with an irregular morphology, and they exhibited excellent in vitro bone biocompatibility. In this study, the efficiency of in vivo osteogenesis on EDM surfaces was investigated by surgically placing screw-shaped EDM-processed and machined-surface implants into the femurs of four Japanese wh...

2012
Siddharth Shah

Objective: To evaluate marginal discrepancies between cast implant superstructure and EDM processed implant structure. Materials and methods: For the purpose of this study, an experimental model was prepared on which nine cast implant superstructure in nickel-chromium were fabricated which was then subjected to EDM processing. One-screw test was used to verify fit of superstructure both preand ...

2012
Anish Kumar Vinod Kumar Jatinder Kumar

This paper presents an investigation on WEDM of pure titanium (grade-2). An attempt has been made to model the response variable i.e. surface roughness in WEDM process using response surface methodology. The experimental plan is based on Box-Behnken design. Six parameters i.e. pulse on time, pulse off time, peak current, spark gap voltage, wire feed and wire tension has been varied to investiga...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده مکانیک 1385

تراشکاری استوانه ای وایرکات برای تولید قطعات استوانه ای دقیق روی مواد سخت و مشکل برای مشکل کاری توسعه یافته است. برای این کار یک اسپیندل دقیق، انعطاف پذیر و مقاوم به خوردگی طراحی شده و به ماشین وایر کات پنج محوره cnc اضافه شده است تا قادر به ایجاد اشکال هندسی مختلفی روی قطعه کار باشد. به علت عدم وجود تماس مستقیم ابزار و قطعه کار، این روش قادر به ایجاد فرمهای مختلف روی قطعات با سختی و استحکام با...

2015
T. Muthuramalingam B. Mohan

Extremely hard materials can be easily machined by Electrical Discharge Machining process due to its thermal erosion nature. In this process, the amount of material removed is directly proportional to the discharge current. Due to the stochastic nature of the thermal erosion process, the discharge current is varied for every applied electrical pulse. It results in different levels of material r...

Journal: :Mathematical and Computer Modelling 2008
H. K. Kansal Sehijpal Singh Pradeep Kumar

In the present paper, an axisymmetric two-dimensional model for powder mixed electric discharge machining (PMEDM) has been developed using the finite element method (FEM). The model utilizes the several important aspects such as temperaturesensitive material properties, shape and size of heat source (Gaussian heat distribution), percentage distribution of heat among tool, workpiece and dielectr...

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