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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In summary, electropolishing is an old industrial process that is finding renewed interest in the finishing of metal parts produced by additive manufacturing. This has led to the emergence of innovative processes, based on the application of bipolar pulses and the use of unconventional electrolytes.

Pulsed and reverse-pulsed polarization is probably the key to reducing the impact of electrolytes, while improving the quality, uniformity and speed of the process, thus supporting its industrial transfer towards the objective of improving surfaces at lower cost. It is this combination (polarization wave and innovative chemistry) that machine manufacturers rely on. The electropolishing of manufactured parts on surface treatment lines is a conceivable prospect for many components, if we consider the progress made on generators on the one hand, and simulation tools on...

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page Recent developments and innovative processes in electropolishing

Glossary

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...