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Modeling of Recast Layer in Micro-Electrical Discharge Machining
Journal of Manufacturing Science and Engineering, 2010The thickness of recast layers produced during electrical discharge machining (EDM) is an important process performance measure as it may indicate an extent of crack propagation in a machined surface or thickness of a functional layer alloyed onto a machined surface.
P. C. Tan, S. H. Yeo
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Removal of Surface Spatter and Recast layer by Chemical Cleaning
Materials Today: Proceedings, 2019Abstract Laser microdrilling has various applications in aerospace and electrical industries in manufacturing components such as nozzle guide vanes, combustion chambers, cooling holes on turbine blades, etc. In this study, cleaning of laser micro-drilled holes has been carried out. These holes were drilled using nanosecond pulsed fiber laser.
Ganesh Dongre +4 more
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Electrochemical corrosion assisted laser drilling of micro-hole without recast layer
Optik, 2020Abstract High-power pulsed laser is an efficient tool for drilling micro-holes on metal, but due to the melt ejection dominated material removal mechanism, recast layer can hardly be avoided. This paper proposes to use electrochemical corrosion as a kind of postprocessing technique to remove the laser induced recast layer.
Wenqiang Duan +5 more
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Journal of Materials Engineering and Performance, 2017
In this study, electrical discharge machining (EDM) is used to directly drill normal effusion cooling holes in thermal-barrier-coated nickel-based superalloys (TBCs) via the assisting electrode method. The formation of the conductive layer was studied using scanning electron microscopy and energy-dispersive spectroscopy.
Li Wang, Yongfeng Guo, Guowei Zhang
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In this study, electrical discharge machining (EDM) is used to directly drill normal effusion cooling holes in thermal-barrier-coated nickel-based superalloys (TBCs) via the assisting electrode method. The formation of the conductive layer was studied using scanning electron microscopy and energy-dispersive spectroscopy.
Li Wang, Yongfeng Guo, Guowei Zhang
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Recast Layer Formation during Wire Electrical Discharge Machining of Titanium (Ti-Al6-V4) Alloy
Journal of Materials Engineering and Performance, 2021Titanium alloys, in particularly Ti-6Al-4V alloy is used enormously in many high-tech sectors specially in aerospace industries due to its superior properties. Machining process (for example wire electrical discharge machining) to reshape this alloy affects the integrity of the newly generated surfaces.
A. Pramanik +5 more
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Correlation of surface roughness and recast layer thickness in electrical discharge machining
Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2015Electrical discharge machining (EDM) is an extensively used method in the machining of electrically conductive materials. Recast or white layer formation is undesirable, but inevitable, result of EDM and needs to be understood and accurately determined to efficiently perform post-treatment processes for removing the recast layer caused by EDM process.
Yildiz Y. +3 more
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Investigations Into the Removal of EDM Recast Layer With Magnetic Abrasive Machining
Volume 1: Processing, 2015Electrical Discharge Machining (EDM) is a non conventional machining process capable of accurately machining parts with high hardness and of complex shapes. The sparks produced during the EDM process cause localized melting on the work surface. The formation of recast layer is very common on EDMed surfaces.
Sehijpal Singh Khangura +3 more
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Dynamic change process of a recast layer in Nd:YAG millisecond laser trepan drilling
Journal of the Optical Society of America B, 2020Laser drilling has extensive applications in modern industry. To improve the quality of microholes drilled by a high-power millisecond pulsed laser, the laser trepan drilling technique was studied in depth in this paper. Processing parameters, such as trepanning speed (TS) and rotation number (RN), were experimentally studied for their influence on a ...
Wenqiang Duan +4 more
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Effect of temporally modulated pulse on reducing recast layer in laser drilling
The International Journal of Advanced Manufacturing Technology, 2016Temporally modulated-pulse laser is a promising technique; it has many advantages compared with normal pulse laser. The modulated pulse studied in this work was comprised of a wide pre-heating pulse front and a sharp pulse trail. The experiments were carried out mainly to study the influence of pre-heating subpulse energy and duration, while the trail ...
Wenqiang Duan +6 more
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Study on recast layer thickness and residual stress during WEDM of SMAs
Emerging Materials Research, 2017Shape memory alloys (SMAs) are difficult to machine by thermoelectric processes due to the affinity of titanium (Ti) for oxygen, and the specific properties of SMAs have been taken into account for the design of SMA actuators. In this investigation, wire electro-discharge machining of a specific SMA is investigated with specific reference to the ...
Mallaiah Manjaiah, Rudolph F. Laubscher
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