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

2017 ◽  
Author(s):  
Rajendra Shinde ◽  
Nilesh Patil ◽  
D. Raut ◽  
Raju Pawade ◽  
Prakash Brahmaknakr
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Experimental Investigations ◽  
Die Steel

Comparison of material transfer in electrical discharge machining of AISI H13 die steel

2009 ◽  
Vol 223 (7) ◽  
pp. 1733-1740 ◽  
Author(s):  
S Kumar ◽  
R Singh ◽  
T P Singh ◽  
B L Sethi
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Tungsten Powder ◽  
Material Transfer ◽  
Die Steel ◽  
Cent Increase ◽  
Aisi H13 ◽  
Copper Chromium ◽  
H13 Die Steel ◽  
And Tungsten

The electrical discharge machining (EDM) process is extensively used in the tool and die making industry for accurate machining of internal profiles in hardened materials. Although it is essentially a material removal process, efforts have been made in the recent past to use it as surface treatment method. This article investigates and compares the effect of material transfer from electrode bodies (copper, copper—chromium, and copper—tungsten) and tungsten powder suspended in the dielectric medium during die-sinking EDM of AISI H13 die steel. Results show a 76 per cent increase in micro-hardness by machining with a copper—tungsten electrode and a 111 per cent increase by machining with tungsten powder mixed in the dielectric. The copper—chromium electrode gives the best surface roughness (Ra) value of 2.67 μ m. Scanning electron microscopy and X-ray diffraction analysis of the machined surfaces show alloying of parent material with tungsten and tungsten carbide. Chemical composition of the machined surfaces was further checked on an optical emission spectrometer to verify the results. Besides a significant presence of tungsten, an increase in the percentage of carbon is also observed.

A Comparative Study of Machining Parameters on Die-Sinking Electrical Discharge Machining (EDM) using Copper and Aluminium Electrodes on Hard Steels

2016 ◽  
Vol 3 (1) ◽  
pp. 22-44 ◽  
Author(s):  
Ashwani Kharola
Keyword(s):  
Surface Roughness ◽  
Discharge Current ◽  
Electrical Discharge ◽  
Material Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Die Steel ◽  
The Relationship

This paper considers effect of variation in value of Discharge current on different process parameters of Die Sinking EDM. The parameters considered were Material removal rate (MRR), Tool removal rate (TRR), Surface roughness (Ra) and Time (for machining required depth of cut). A total of 32 experiments were conducted on four different hard steels i.e. Die steel D3, En-8, En-19 and Stainless steel (SS-AISI-440C). The Copper and Aluminium electrodes brazed with mild steel were used for machining. The four different values of current i.e. 6A, 9A, 12A and 15A were considered for the study. The experimental results shows the relationship between MRR, TRR, Ra and Time with variation in magnitude of discharge current. This study also illustrates the relationship among different process parameter considered in the study. The results are shown with the help of graphs and tables.

scholarly journals Influence of process parameters in electrical discharge machining on H13 die steel

Heliyon ◽  
2019 ◽  
Vol 5 (6) ◽  
pp. e01813 ◽  
Author(s):  
M.M. Bahgat ◽  
A.Y. Shash ◽  
M. Abd-Rabou ◽  
I.S. El-Mahallawi
Keyword(s):  
Process Parameters ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Influence Of Process Parameters ◽  
Die Steel ◽  
H13 Die Steel

Research on Surface Modification Technique by EDM

2010 ◽  
Vol 154-155 ◽  
pp. 1193-1198 ◽  
Author(s):  
Xiao Hai Li ◽  
Yu Fang ◽  
Xin Rong Wang ◽  
Bao Lin Yin
Keyword(s):  
Surface Modification ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
New Method ◽  
Die Steel ◽  
Steel Coating ◽  
Die Surface ◽  
Modification Technique

This paper describes a new method of die surface modification by ordinary Electrical Discharge Machining (EDM) tool. First, the principle of this method is studied. Secondly, the technology and characteristics of the die steel coating are discussed in detail based on lots of experiments, and the results show that the die steel characteristics are improved evidently by using EDM. At last, the technology is applied to the punch die initially, and it can be drawn that the life of the coated punch die is improved evidently compared with the non-coated punch die through the punching test.

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