Study on the technology of surface strengthening Ti–6Al–4V alloy by near-dry multi-flow channel electrode electrical discharge machining

Ding, Yuhong; Kong, Linglei; Lei, Weining; Li, Qilin; Ding, Kai; He, Yiliang

doi:10.1016/j.jmrt.2023.12.133

Cited by 2 publications

(1 citation statement)

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“…Where U e -power supply voltage, t e -pulse width, I e -peak current. In the process of EDM, when the pulse width is fixed, as the current increases, more electrons will form in the discharge channel to bombard the positive electrode, and deeper erosion pits will be created on the surface of the positive electrode workpiece [36,37] (as shown in figure 7). Therefore, under the action of the discharge channel, more high-temperature molten materials are formed that participate in the inter-electrode oxidation reaction [38], thereby increasing the chemical reaction energy between the electrodes, and increasing the energy acting on the workpiece leads to the improvement of MRR.…”

Section: E E 0 Ementioning

confidence: 99%

Experimental optimization of machining GH4145 by atomizing discharge ablation milling

Tian,

Li,

Zhuo

2024

Mater. Res. Express

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Atomizing discharge ablation milling (ADAM) technology is an efficient discharge machining technology derived from the traditional electrical discharge machining (EDM) method, which can be used to efficiently machine hard-to-machine materials such as nickel-based superalloy. In this present, the performance of machining nickel-based superalloy GH4145 by ADAM and Air near-dry EDM were compared, and the experimental results showed that the material removal rate (MRR) obtained by ADAM was nearly double that of the latter. A single-factor experiment were conducted to investigate the effect of electrode rotation speed on ADAM's processing performance. Subsequently, an orthogonal experimental method was used to design the experiment. The signal-to-noise ratio analysis method was used to systematically study the performance characteristics of ADAM, including the influence of atomization amount, oxygen pressure, discharge current, duty ratio on MRR and tool electrode relative wear rate (TWR). The results showed that discharge current was the most influential processing parameter on MRR and TWR. Finally, the optimal combination of processing process parameters that met the requirements of various processing effect evaluation indicators were obtained and the correctness of the single objective optimization results was verified through experiments.

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Section: E E 0 Ementioning

confidence: 99%