Article | REF: M1635 V1

Electropolishing -Tool for post-processing of metallic additive manufacturing parts

Authors: Marie-Laure DOCHE, Jean-Yves HIHN

Publication date: October 10, 2021

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1. General principles of electropolishing

1.1 Process description

Electropolishing, also known as electrochemical polishing or electrolytic polishing, is an electrolytic anodic dissolution process that has been used on an industrial scale since the 1930s thanks to the work of Jacquet. . In contrast to traditional mechanical finishing techniques (machining, milling, abrasion, etc.), this is a non-contact process, and therefore involves no metallurgical disturbance of the surface layer obtained after material removal. Its specificity lies in the controlled dissolution of a thin layer of metal,...

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Electrochemical approach to electropolishing

Bibliography

(1) - JACQUET (P.A.), FIGOUX (H.) - Perfectionnement aux traitements électrolytiques des métaux. - Brevet Français, n° 707526 (1930).
(2) - CHAISE (T.), ELGUEDJ (T.), GIRARDIN (F.), MARTINI (L.), NOEL (N.), TARDIF (N.) - Parachèvement de surface Généralités....

Standards and norms

Geometric product specification (GPS) – Surface finish: profile method – Terms, definitions and surface finish parameters. - NF EN ISO 4287 - décembre 1998
Geometric product specification (GPS) – Surface finish: profile method – Terms, definitions and surface parameters – Amendment 1: number of peaks. - NF EN ISO 4287/A1 - août 2009
Geometric product specification (GPS) – Surface finish: surface – Part...

Patents

Cerium electrolytic oxidation process and electrolysis unit for its implementation CA2582058.

Electrolyte for electrochemically polishing metallic surfaces EP1625246A2 (2003).

Method for electropolishing and/or electrochemical deburring of surfaces made from titanium or titanium-containing alloys comprises using an electrolyte made from methane sulfonic acid or one or more alkane...