Single Discharge Machining Insulating Al<sub>2</sub>O<sub>3</sub>Ceramic with High Instantaneous Pulse Energy in Kerosene

Ji, Renjie; Y, Liu; Zhang, Yanzhen; Wang, Fei; Cai, Baoping; Fu, Xing-Sheng

doi:10.1080/10426914.2011.602783

Cited by 26 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser ablation, polishing with diamond suspensions or cutting with diamond tools can be used to process non-conductive ceramics. But these processes are very expensive and time consuming [2][3][4][5]. Electrical discharge machining (EDM) is a machining process whereby a desired shape is obtained using electro-thermal energy.…”

Section: Introductionmentioning

confidence: 99%

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

Moudood

Sabur

Lutfi

et al. 2014

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

Electrical discharge machining (EDM) is a non-conventional process where complex and difficult-to-cut materials can be machined. Adhesive copper foil as an assisting electrode (AE) is used to cover the zirconia (ZrO 2 ) surface to start the primary spark between the tool electrode and workpiece. Kerosene is dissociated and produces a carbon layer on the workpiece surface when machining of the initial copper foil is completed. Thus machining continues although ZrO 2 is a non-conductive material. In this study, the EDM of ZrO 2 is investigated with graphite, copper and brass tool electrodes. Material removal rate (MRR) and surface characteristics are analysed. Experiments are performed by varying the parameters peak current and pulse-on time with different tool electrodes. From the experiments, MRR on ZrO 2 has been compared for three different tool electrodes. It is found that the graphite tool electrode performs the highest MRR for EDM of ZrO 2 . The least MRR is obtained by the brass tool electrode. However, better surface quality is observed with the copper tool electrode than EDM with brass or graphite electrodes. This investigation with varying machining parameters and different tool electrodes can be helpful in finding an effective use of the EDM process.

show abstract

Section: Introductionmentioning

confidence: 99%

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

Moudood

Sabur

Lutfi

et al. 2014

Int. J. Automot. Mech. Eng.

View full text Add to dashboard Cite

show abstract

“…It is also observed that surface roughness increases with the increase of discharge current [2,8]. However, EDM of Al2O3 is found to be more difficult to machine because of the unsteady formation of electrically conductive layers on workpiece surface during the machining process [5,13]. Under this circumstance, attaining the optimum machining outputs such as a higher MRR and lower SR is complicated [14].…”

Section: Introductionmentioning

confidence: 97%

“…It has relatively high dielectric strength with low viscosity. This procedure was adopted from published literature [4,5,7]. …”

Section: Methodsmentioning

confidence: 99%

“…Electrical conductivity of selected materials is shown in Table 1 and the physical properties of Al2O3 are listed in Table 2. However, with the use of assisting electrode, the EDM process has already been applied in machining nonconductive ceramic materials [3][4][5][6][7]. In the case of carbonic dielectric fluid, the cracked polymer chains produce carbon black which combines with debris and forms a conductive layer on ceramic surface [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electro-discharge machining of alumina: Investigation of material removal rate and surface roughness

Ali¹,

Moudood²,

Maleque³

et al. 2017

J. MECH. ENG. SCI.

View full text Add to dashboard Cite

Alumina is a non-conductive ceramic material which can meet the high demand of industrial applications due to its excellent physical and chemical properties. However, machining of alumina is not possible by using the conventional machining methods due to its inherent brittleness. Recently, electro-discharge machining has been used for structuring alumina with assisting electrode to initiate the spark between the conductive tool electrode and the non-conductive work piece material. However, the effects of process parameters on material removal rate and surface roughness have not been investigated to formulate mathematical models. This study dealt with developing models for material removal rate and surface roughness correlating three process parameters which are peak current, pulse-on time and gap voltage using response surface methodology. The models were verified with 7% error between the results of empirical models and the experimental values.

show abstract

“…The spark erosion-based processes including micro-EDM are machining techniques mostly used for conductive workpiece materials. A few researchers have attempted to machine non-conductive materials using electrical discharge machining [20][21][22]. But, the sparking phenomenon is found to be different because the process is modified with an assisting electrode.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Effects of Electrical and Non-Electrical Parameters on the Material Removal and Surface Integrity in Case of μEDM of a Non-Conductive Ceramic Material using a Combined Fuzzy-AOM Approach

Puthumana¹

2016

IJAST

View full text Add to dashboard Cite

Single Discharge Machining Insulating Al₂O₃Ceramic with High Instantaneous Pulse Energy in Kerosene

Cited by 26 publications

References 26 publications

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

Electro-discharge machining of alumina: Investigation of material removal rate and surface roughness

Modeling the Effects of Electrical and Non-Electrical Parameters on the Material Removal and Surface Integrity in Case of μEDM of a Non-Conductive Ceramic Material using a Combined Fuzzy-AOM Approach

Contact Info

Product

Resources

About

Single Discharge Machining Insulating Al2O3Ceramic with High Instantaneous Pulse Energy in Kerosene

Cited by 26 publications

References 26 publications

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

INVESTIGATION OF THE MACHINABILITY OF NON-CONDUCTIVE ZrO2 WITH DIFFERENT TOOL ELECTRODES IN EDM

Electro-discharge machining of alumina: Investigation of material removal rate and surface roughness

Modeling the Effects of Electrical and Non-Electrical Parameters on the Material Removal and Surface Integrity in Case of μEDM of a Non-Conductive Ceramic Material using a Combined Fuzzy-AOM Approach

Contact Info

Product

Resources

About

Single Discharge Machining Insulating Al₂O₃Ceramic with High Instantaneous Pulse Energy in Kerosene