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Micromachines
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Electrochemical Manufacturing Processes
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Electrochemical Manufacturing Processes

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D：Materials and Processing".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 3904

Special Issue Editor

Dr. Pablo Rodriguez

E-Mail Website
Guest Editor
Department of Manufacturing Engineering, University of Leon, 24071 Leon, Spain
Interests: electropolishing; micromilling; electrochemical micromachining
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In this Special Issue, new research on electrochemical processes is welcome. At this moment, very detailed information about optimum process parameters is needed to improve the industrial applications of electrochemical micromachining and electropolishing. These parameters range from electrical variables to the conditions of the process, such as electrolytes, temperature, gap, etc. Further research is also needed to understand the chemistry and physics of the process, as well as suitable models for its study and applications. Special attention is required to study the applications of the process, as well as the parts obtained by additive manufacturing. These parts often need post-processing operations to produce micro-features for which the additive manufacturing process does not have enough precision. In addition, additive manufacturing of metallic parts does not achieve suitable surface finishes for some applications, especially biomedical implants and prostheses, in which the surface integrity and absence of residual stress is crucial.

Dr. Pablo Rodriguez
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemical micromachining
  • electropolishing
  • parameter optimization
  • chemical and physical study
  • modelling
  • additive manufacturing

Published Papers (2 papers)

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Research

19 pages, 32887 KiB  
Article
Profile Evolution and Cross-Process Collaboration Strategy of Bearing Raceway by Centerless Grinding and Electrochemical Mechanical Machining
by Zhaobin Yan, Shuangjiao Fan, Wenpeng Xu, Zhixin Zhang and Guibing Pang
Micromachines 2023, 14(1), 63; https://doi.org/10.3390/mi14010063 - 26 Dec 2022
Cited by 1 | Viewed by 1431
Abstract
Roundness is one of the most important evaluation indexes of rotary parts. The formation and change of roundness in the machining of parts is essentially the formation and genetic process of profile. Centerless positioning machining is one of the main surface finishing methods [...] Read more.
Roundness is one of the most important evaluation indexes of rotary parts. The formation and change of roundness in the machining of parts is essentially the formation and genetic process of profile. Centerless positioning machining is one of the main surface finishing methods of rotary parts. The rounding mechanism of centerless positioning machining determines its unique roundness profile formation and genetic characteristics. How to eliminate the roundness error of centerless positioning machining has become one of the important issues in the research of high-precision rotary part machining. This paper explores the influence of process parameters on the roundness error from the perspective of profile evolution during centerless grinding and electrochemical mechanical machining, with the aim of providing a cross-process collaboration strategy for improving bearing raceway accuracy. Through an experiment of centerless grinding, the influence law and mechanism of process parameters on the profile are discussed. On this basis, electrochemical mechanical machining experiments are designed to explore the variation rules and mechanisms of different profile shapes in the machining process. The cross-process collaboration strategy is studied, and reasonable parameters of centerless grinding and electrochemical mechanical machining are determined. The results show that in the centerless grinding stage, increasing the support plate angle can form a multiple-lobe profile with high frequency within a wide range of process parameters. Electrochemical mechanical machining can effectively smooth the high-frequency profile and appropriately expanding the cathode coverage can improve the roundness error and reduce the requirement of initial accuracy of a multiple-lobe profile workpiece to a certain extent. Therefore, the combined machining technology of “centerless grinding + electrochemical mechanical machining” provides an efficient technical means to realize the precision machining of rotary parts such as bearing raceways. Full article
(This article belongs to the Special Issue Electrochemical Manufacturing Processes)
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16 pages, 5629 KiB  
Article
Analysis of Multi-Physics Coupling of Small Holes in GH4169 Alloy by Electrolytic Processing of Tube Electrodes
by Zhaolong Li and Ye Dai
Micromachines 2021, 12(7), 828; https://doi.org/10.3390/mi12070828 - 15 Jul 2021
Cited by 3 | Viewed by 1716
Abstract
This paper presents a simulation and experimental study of the structure of small holes in GH4169 alloy electrolytic ally processed by tube electrodes with different characteristic power sources. It analyzes the multi-physical field coupling relationship of flow, temperature, and electric fields within the [...] Read more.
This paper presents a simulation and experimental study of the structure of small holes in GH4169 alloy electrolytic ally processed by tube electrodes with different characteristic power sources. It analyzes the multi-physical field coupling relationship of flow, temperature, and electric fields within the interstitial space. The results indicate that the tube electrode electrolytic processing of the GH4169 alloy small hole structure with a pulsed power supply has more uniform temperature and current density distribution within the gap, which is beneficial to the processing accuracy and smoothness of the small hole structure. Meanwhile, SEM was used to analyze the microscopic morphology of the electrode end surface during short-circuiting, and it was concluded that as the processing continued, the electrode end surface gradually produced a non-metallic oxide layer, which destroyed the electric field of the gap and affected the processing stability. The use of high-frequency positive and negative pulse power can effectively avoid the generation of a non-metallic oxide layer. Through the combination of simulation analysis and experimental verification, it is concluded that increasing electrolyte pressure in stages can effectively improve machining accuracy and stability. The interstitial current increases as the feed rate of the tool electrode increases, and the diameter of the machined small hole decreases as it increases. Full article
(This article belongs to the Special Issue Electrochemical Manufacturing Processes)
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