Accelerated Electrochemical Machining Tool Design via Multiphysics Modeling

Skinn, Brian; Hall, Timothy; Snyder, Stephen; Rajurkar, K. P.; Taylor, E. Jennings

doi:10.1149/07711.0963ecst

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…The uniformity of the flow field was improved through a special structure of the cathode [4]. Through establishing electric flied model, Skinn el al compared primary current distribution simulations with indentations fabricated by ECM of steel panels [5].The distribution of the current density under a flexible auxiliary electrode mechanism was obtained in counter-rotating ECM [6]. By establishing the thermal field model in ECM, Clark and Mcgeough analyzed the distribution of temperature along the machining gap [7].…”

Section: Introductionmentioning

confidence: 99%

Research on multiphysics coupling fields in electrochemical trepanning of lateral flow

Lei

Zhu

2022

Int J Adv Manuf Technol

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Electrochemical trepanning (ECTr) is an effective method for machining the ruled surface parts. Generally, the forward flow mode is used in ECTr. Under the forward flow, the streamlines at the outlet are divergent, resulting in the obvious flow patterns at the outlet and the instability of the machining process. In ECTr of a diffuser with a special structure, the lateral flow mode is adopted to improve the uniformity of the flow field, thereby improving the surface quality at the hub. ECTr is a complicated multiphysics coupling process. To investigate the distributions of electric field, two-phase flow field and thermal field in ECTr with lateral flow, a multiphysics coupling field model was established. In this model, a coupling relationship was formed between the various physical fields through the change of the electrolyte conductivity. Through the multiphysics coupling simulation, the changes of the gas bubbles volume fraction, the electrolyte temperature, the electrolyte conductivity and the current density were obtained along the flow path. Compared with the inlet of the electrolyte, the gas bubbles volume fraction and the temperature at the outlet increased by 38.8% and 6.3 K, respectively. Under the combined influence, the conductivity decreased by 7.227 S/m at the outlet, resulting in a decrease of 57.81 A/cm 2 in the current density. Then, the corresponding experiment of lateral flow ECTr was performed to verify the simulation results. Along the flow path, the thickness of the machined blade gradually increased, varying from 2.09 mm to 2.76 mm. The surface quality gradually deteriorated along the flow path and the surface roughness varied from Ra 0.72 μm to Ra 1.05 μm. Combining the simulation and the experiment, the correctness and the effectiveness of the multiphysics coupling model and simulation were confirmed. The results can be applied to other ECM processes.

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Section: Introductionmentioning

confidence: 99%

Research on multiphysics coupling fields in electrochemical trepanning of lateral flow

Lei

Zhu

2022

Int J Adv Manuf Technol

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Enhancing cathode design by considering complex motion and variations of electric field distribution in counter-rotating electrochemical machining

ZHANG,

WANG,

et al. 2024

Chinese Journal of Aeronautics

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Research on Multiphysics Coupling Fields in Electrochemical Trepanning of Lateral Flow

Lei

Zhu

2021

Preprint

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Electrochemical trepanning (ECTr) is an effective method for machining the ruled surface parts. Generally, the forward flow mode is used in ECTr. Under the forward flow, the streamlines at the outlet are divergent, resulting in the obvious flow patterns at the outlet and the instability of the machining process. In ECTr of a diffuser with a special structure, the lateral flow mode is adopted to improve the uniformity of the flow field, thereby improving the surface quality at the hub. ECTr is a complicated multiphysics coupling process. To investigate the distributions of electric field, two-phase flow field and thermal field in ECTr with lateral flow, a multiphysics coupling field model was established. In this model, a coupling relationship was formed between the various physical fields through the change of the electrolyte conductivity. Through the multiphysics coupling simulation, the changes of the gas bubbles volume fraction, the electrolyte temperature, the electrolyte conductivity and the current density were obtained along the flow path. Compared with the inlet of the electrolyte, the gas bubbles volume fraction and the temperature at the outlet increased by 38.8% and 6.3 K, respectively. Under the combined influence, the conductivity decreased by 7.227 S/m at the outlet, resulting in a decrease of 57.81 A/cm2 in the current density. Then, the corresponding experiment of lateral flow ECTr was performed to verify the simulation results. Along the flow path, the thickness of the machined blade gradually increased, varying from 2.09 mm to 2.76 mm. The surface quality gradually deteriorated along the flow path and the surface roughness varied from Ra 0.72 μm to Ra 1.05 μm. Combining the simulation and the experiment, the correctness and the effectiveness of the multiphysics coupling model and simulation were confirmed. The results can be applied to other ECM processes.

show abstract

Accelerated Electrochemical Machining Tool Design via Multiphysics Modeling

Cited by 4 publications

References 7 publications

Research on multiphysics coupling fields in electrochemical trepanning of lateral flow

Research on multiphysics coupling fields in electrochemical trepanning of lateral flow

Enhancing cathode design by considering complex motion and variations of electric field distribution in counter-rotating electrochemical machining

Research on Multiphysics Coupling Fields in Electrochemical Trepanning of Lateral Flow

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