Year: 2018
Type: article
Abstract: Surface quality of workpiece with sudden dimension change processed by electrochemical machining (ECM) is affected by many factors, such as the electrolyte flow pattern, gap between tool and workpiece electrodes, machining by-products such as gas bubbles, etc. In this paper, surface polishing process of a workpiece with sudden dimension change was considered. The electrolyte flow velocity distribution and vortex formed due to the sudden dimension change was discussed. Then, the transport of gas bubbles by the flow and its effect on the current density distribution in the electrolyte as well as the effect of current density distribution on the generation of bubbles were also investigated. Results show that current distribution on the electrode surface was greatly affected by the generation and accumulation of gas bubbles around the corner area due to the sudden dimension change of flow channel geometry, which leads to poor surface quality near the workpiece corner.
Source: Procedia CIRP
Authors: Dahai Mi, Hongping Luo, Wataru Natsu
Language: English
Subfield: Industrial and Manufacturing Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2802993029