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4. Chrome-free satin challenge
Chromium-free satin finishing processes can achieve the same degree of etching as a more or less concentrated chromium satin finishing process, in terms of roughness, adhesion and surface analysis, as previously presented.
However, chrome-free satin finishing processes must not only meet the challenge of metallizing ABS and/or PC/ABS parts, they must also :
be stable and efficient over time, such as the CrVI etching process, to support industrial production around the clock;
-
offer the same degree of selectivity as a chromic process, i.e. :
metallizing the parts to be treated, while avoiding metallizing the fixtures to which the parts are attached;
metallizing only the ABS part of the part during the process if several...
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Chrome-free satin challenge
Bibliography
Standards
- Standard practice for qualitative adhesion testing of metallic coatings. - ASTM B 571-97 - (1997)
- Metallic coatings – Electroplated coatings of nickel plus chromium on plastics materials. - UNI ISO 4525 - (2003)
- Peel Strength of metal Electroplated Plastics. - ASTM B 533-85 - (2004)
Regulations
SEVESO II: Directive 96/82/EC on the control of major-accident hazards involving dangerous substances.
Fiches toxicologiques INRS n° 1 – édition 2007 : Le trioxyde chrome, Cahiers de notes documentaires n° 130, 1 er trimestre 1988.
Arrêté du 30.06.2006 relatif aux ateliers de traitement de surface (JO du 5 septembre 2006)....
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