Material removal rate and electrode wear ratio study on the powder mixed electrical discharge machining of cobalt-bonded tungsten carbide

Kung, Kuang-Yuan; Horng, Jenn-Tsong; Chiang, Ko-Ta

doi:10.1007/s00170-007-1307-2

Cited by 172 publications

(83 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The experiments were performed using Al powder suspended in mineral oil as dielectric with 94WC-6Co work material and copper as tool electrode [7]. Amandeep Singh presented a review on recent advancement in EDM.…”

Section: 1backgroundmentioning

confidence: 99%

Experimental Investigations into Powder-Mixed Electrical Discharge Machining (PMEDM) of HCHCr D2 Die Steel

Shinde¹,

Patil²,

Raut³

et al. 2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

View full text Add to dashboard Cite

Abstract:The purpose of this paper is to present an experimental work attempting to model and optimize the influencing process parameters involved in powder-mixed electrical discharge machining (PMEDM). Looking at available literature it is observed that a lot of work can be done in the field of electric discharge machining related to surface integrity. In this work Aluminum, Silicon and Silicon Carbide fine abrasive powders with particle concentration of 2 gm /l and size of 44 μm were added into the SEO25 (spark erosion oil) dielectric liquid of electrical discharge machine. The experiments were carried out on experimental set up developed in laboratory. HCHCr D2 die steel and copper was used as work piece and tool electrode materials, respectively. Response surface methodology (RSM), employing a face-centered central composite design for three design variables such as peak current (Ip), pulse on-time (Ton), and powder material was used to assess the process performance. Suitable mathematical models for the response outputs were obtained.

show abstract

Section: 1backgroundmentioning

confidence: 99%

Experimental Investigations into Powder-Mixed Electrical Discharge Machining (PMEDM) of HCHCr D2 Die Steel

Shinde¹,

Patil²,

Raut³

et al. 2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

View full text Add to dashboard Cite

show abstract

“…Mohri et al은 가공 시 시간의 경과에 따른 로드 형(rod type) 전극의 마모형상에 대하여 연구하였고 (10) , Jeong et al은 방전드릴링 시 발생하는 전극과 공작물의 기하학적 형상을 예 측하는 연구를 하였다 (11) . Yuan et al은 분진 혼합형(powder mixed) EDM가공에서의 소재 제거율(material removal rate, MRR)과 전극 마모비율(electrode wear ratio, EWR)에 대하여 연구한 바 있다 (12) . Pham et al은 중실 형과 중공 형 전극을 이용한 방전 드릴가공 시 전극 형태에 따른 전극 마모에 대하여 연구하였다 (13) .…”

Section: 서 론unclassified

Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Choi¹,

Huh²,

Kim³

et al. 2013

Journal of The Korean Society of Manufacturing Technology Engin

View full text Add to dashboard Cite

Electric discharge machining drill (EDM-drill) is an efficient process for the fabrication of micro-diameter deep metal hole. As there is non-physical contact between tool (electrode) and workpiece, EDM-drill is widely used to machine the hard machining materials such as high strength steel, cemented carbide, titanium alloys. The electro-thermal energy forces the electrode to wear out together with the workpiece to be machined. The electrode wear occurs inside of a machining hole. and It causes hard to monitor the machining state, which leads the productivity and the quality to decrease. Thus, this study presents a methodology to estimated the electrode wear amount while two coefficients (scale factor and shape factor) of the logarithmic regression model are evaluated from the experiment result. To increase the accuracy of estimation model, the linear transformation method is adopted using the differences of initial electrode wear differences. The estimation model is verified through experiment. The experimental result shows that within minute error, the estimation model is able to predict accurately.

show abstract

“…Several researchers, such as Jeswani [12], Wong et al [13], Kumar et al [14], and Han et al [15] used graphite powder for EDM of DTM materials and found it significantly useful. This process assisted us in selecting the graphite powder as abrasive in EDM of WC-Co. Table 1 [3,[17][18][19][20][21][22][23][24][25][26][27][28] describes the work done and gaps in literature with respect to EDM of WC. Jeswani [12] investigated EDM with distilled water and kerosene oil as dielectric fluid.…”

Section: Introductionmentioning

confidence: 98%

Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

Singh

Sharma

2016

Front. Mech. Eng.

View full text Add to dashboard Cite

Electrical discharge machining (EDM) is a well-known nontraditional manufacturing process to machine the difficult-to-machine (DTM) materials which have unique hardness properties. Researchers have successfully performed hybridization to improve this process by incorporating powders into the EDM process known as powder-mixed EDM process. This process drastically improves process efficiency by increasing material removal rate, micro-hardness, as well as reducing the tool wear rate and surface roughness. EDM also has some input parameters, including pulse-on time, dielectric levels and its type, current setting, flushing pressure, and so on, which have a significant effect on EDM performance. However, despite their positive influence, investigating the effects of these parameters on environmental conditions is necessary. Most studies demonstrate the use of kerosene oil as dielectric fluid. Nevertheless, in this work, the authors highlight the findings with respect to three different dielectric fluids, including kerosene oil, EDM oil, and distilled water using one-variable-at-a-time approach for machining as well as environmental aspects. The hazard and operability analysis is employed to identify the inherent safety factors associated with powder-mixed EDM of WC-Co.

show abstract

Material removal rate and electrode wear ratio study on the powder mixed electrical discharge machining of cobalt-bonded tungsten carbide

Cited by 172 publications

References 15 publications

Experimental Investigations into Powder-Mixed Electrical Discharge Machining (PMEDM) of HCHCr D2 Die Steel

Experimental Investigations into Powder-Mixed Electrical Discharge Machining (PMEDM) of HCHCr D2 Die Steel

Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

Contact Info

Product

Resources

About