Investigation of nitride layers deposited on annealed AISI H13 steel by die-sinking electrical discharge machining

2020 ◽  
Vol 109 (7-8) ◽  
pp. 2325-2336
Author(s):  
Sinval Pedroso da Silva ◽  
Alexandre Mendes Abrão ◽  
Peter Georg Weidler ◽  
Ernane Rodrigues da Silva ◽  
Marcelo Araújo Câmara
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
H13 Steel ◽  
Aisi H13 Steel ◽  
Aisi H13 ◽  
Nitride Layers

Surface modification of AISI H13 steel by die-sinking electrical discharge machining and TiAlN coating: A promising hybrid technique to improve wear resistance

Wear ◽  
2020 ◽  
Vol 462-463 ◽  
pp. 203509
Author(s):  
Sinval Pedroso da Silva ◽  
Alexandre Mendes Abrão ◽  
Ernane Rodrigues da Silva ◽  
Marcelo Araújo Câmara
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Hybrid Technique ◽  
H13 Steel ◽  
Tialn Coating ◽  
Aisi H13 Steel ◽  
Aisi H13 ◽  
Improve Wear Resistance

scholarly journals Influence of Electrode Material and EDM Parameters on Electrode Wear of AISI H13 Steel

2020 ◽  
Vol 7 (2) ◽  
pp. 13-18
Author(s):  
Mostafa Adel Abdullah ◽  
Nareen Hafidh Obaeed ◽  
Aseil Mohammed Radhi ◽  
Hiba Adil Ahmed
Keyword(s):  
Electrode Material ◽  
Electrical Discharge Machining ◽  
Diesel Oil ◽  
Electrode Wear ◽  
H13 Steel ◽  
Electrically Conducting ◽  
Aisi H13 Steel ◽  
Aisi H13 ◽  
Pulse On Time ◽  
Pulse Off Time

Abstract: Electrical discharge machining (EDM) is a non-traditional process that uses the electrical spark discharge to machine electrically conducting materials for geometrically complex shapes or hard materials. In the current work, cupper and brass were used as the electrode material, and AISI H13 steel as the workpiece. Different input parameters were investigated namely: 20, 30, 40 A current, 50, 100, 150 μs pulse on time, and 1, 3, 6 mm gap. The workpiece thickness was fixed to 4 mm and the pulse off time was 25 μs. All EDM experiments were carried out in diesel oil and the voltage was 140 V. The results showed that the electrode wear decreased with increasing the pulse on time and gap and increased with increasing current for copper and brass electrode. The optimal conditions for minimum tool wear were: pulse on time 150 μs, current 20 A, and gap 6 mm for copper and brass electrodes. Electrode wear is minimum for copper at all parameter values compared to brass electrode.

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.

Depth distribution of martensite in plasma nitrided AISI H13 steel and its correlation to hardness

2015 ◽  
Vol 270 ◽  
pp. 266-271 ◽  
Author(s):  
S.D. Jacobsen ◽  
R. Hinrichs ◽  
I.J.R. Baumvol ◽  
G. Castellano ◽  
M.A.Z. Vasconcellos
Keyword(s):  
Depth Distribution ◽  
H13 Steel ◽  
Aisi H13 Steel ◽  
Aisi H13
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