BWB-Group - Metallbeschichtung - Eloxieren - Anodisieren - Harteloxierte - Hartanodisierte - Ematalisieren - Emailieren - Lackieren - Galvanisieren - Galvanisches Verfahren - CNC-Bearbeitung - Aluminium - Laserbeschriften - Plasmaploieren - Elektropolieren - Lasergravur - Galvanik - Architektur - Laser - Ingenieur -Innenarchitektur - Konstrukteur - Aluprofile - Pulverbeschichten - Medizintechnik - Maschinenbau - Werkzeugbau - Bauplanung - Metal plating - Anodising - Anodizing - Hard anodizing - Hard anodising - Ematalizing - Enamelling - Painting - Electroplating - Galvanic process - CNC machining - Aluminum - Laser marking - Plasma plating - Electropolishing - Laser engraving - Electroplating - Architecture - Laser - Engineer -Interior design - Designer - Aluminum profiles - Powder coating - Medical technology - Mechanical engineering - Tool making - Construction planning - Metal polishing service - Métallisation - Anodisation - Anodisation dure - Anodisation dure - Ematalizing - Emaillage - Peinture - Galvanoplastie - Procédé galvanique - Usinage CNC - Aluminium - Marquage laser - Placage au plasma - Polissage électrolytique - Gravure au laser - Placage électrolytique - Architecture - Laser - Ingénieur - Designer d'intérieur - Designer - Technologie médicale - Génie mécanique - Fabrication d'outils - Planification de la construction

Anodising / electrolytic oxidation

Anodised aluminium components are protected against wear and corrosion, exhibit better sliding behaviour, and look more refined.
Anodising aluminium involves converting the top layer of an aluminium component into a robust oxide layer through anodic oxidation.
BWB uses special systems to anodise aluminium components for aviationmechanical engineering, medical technology, product design and architecture.

Verfahren

Dimensionally accurate anodising for precision mechanics

Dimensionally accurate anodising involves removing exactly the same amount of material as is deposited in the anodised coating prior to anodising. Tolerances of +/- 3 µm are permitted.
Where necessary, BWB guarantees dimensional accuracy through logged tests and measurements before, during and after anodisation.


Hard-anodising for additional durability

Hard-anodising can achieve particularly hard, durable surfaces. Unlike normal anodising, it involves working with very high currents and temperatures of around 0°C. This can produce a Vickers hardness of up to 550 HV.
Hard-anodised parts may be impregnated with PTFE to further improve sliding properties.


Anodising large and heavy parts for industry and architecture

BWB Oberflächentechnik anodises parts weighing up to 2 tonnes, and measuring up to 22 m in length, 2.2 m in height, and 1.3 m in width.


Surface refinement for designs

Aluminium parts may be colour-anodised for design applications. The palette for anodising colours ranges from black to gold to vivid colours such as red and blue.


Rounding off BWB Oberflächentechnik's surface treatments are additional pre and post-treatments including chemical glossing, sanding, brushing, Pralox refining, decorative blasting and partial anodising (masking).

Colour chart for architecture

Colour chart for industry

 

Technical properties

   Anodised 

 Hard-
 anodised 
 Layer thickness and
 tolerances (µm)*
 10-25 
 +/- 3
 25-120
 +/- 3
 Hardness/Scratch-
 resistance (HV)*
 200-350

 350-550

 Max. application
 temperature (°C)*
 200

 200

 Increase in surface
 roughness Ra (µm)*
 0.2

 0.3

 Corrosion-resistance
 (h as per ISO 9227)*
 500

 1000

 Breakdown voltage
 (V)*
 bis 1000 

 1000-
 2000

*Depending on the alloying of the base material. The BWB laboratory calculates the individual values by conducting corrosion and hardness tests, and further expert reports are compiled through the use of microscopy and material analysis.


Base-material requirements


In addition to pure aluminium (EN AW-1050A), various alloys are also highly suitable for technical and decorative anodisation, such as EN AW-5005, EN AW-5083, EN AW-5754, EN AW-6060, EN AW-6061 and EN AW-6082. High-strength alloys for structural components (e.g. EN AW-7075) are suitable for technical surface coatings.
Table of aluminium-alloy suitability for anodic oxidation

 

Additional processes

  • Chromating (Alodine 1200 yellow and Alodine 1500 transparent)
  • Chromiting (RoHS-compliant) Surtec 650, Alodine 160 yellow and Alodine 400 transparent
  • Bilatal anodising
  • Partial covering/masking
  • Aluminium pickling-passivation
  • Ematal-coating / Hard ematal-coating
  • Dyeing

Nachbehandlungen

Laser engraving, printing, packaging, varnishing, transportation, Teflon-impregnating

Services

Ansprechpartner

Your contact persons in Switzerland

Willi Hug - BWB-Group - Metallbeschichtung - Eloxieren - Anodisieren - Harteloxierte - Hartanodisierte - Ematalisieren - Emailieren - Lackieren - Galvanisieren - Galvanisches Verfahren - CNC-Bearbeitung - Aluminium - Laserbeschriften - Plasmaploieren - Elektropolieren - Lasergravur - Galvanik - Architektur - Laser - Ingenieur -Innenarchitektur - Konstrukteur - Aluprofile - Pulverbeschichten - Medizintechnik - Maschinenbau - Werkzeugbau - Bauplanung - Metal plating - Anodising - Anodizing - Hard anodizing - Hard anodising - Ematalizing - Enamelling - Painting - Electroplating - Galvanic process - CNC machining - Aluminum - Laser marking - Plasma plating - Electropolishing - Laser engraving - Electroplating - Architecture - Laser - Engineer -Interior design - Designer - Aluminum profiles - Powder coating - Medical technology - Mechanical engineering - Tool making - Construction planning - Metal polishing service - Métallisation - Anodisation - Anodisation dure - Anodisation dure - Ematalizing - Emaillage - Peinture - Galvanoplastie - Procédé galvanique - Usinage CNC - Aluminium - Marquage laser - Placage au plasma - Polissage électrolytique - Gravure au laser - Placage électrolytique - Architecture - Laser - Ingénieur - Designer d'intérieur - Designer - Technologie médicale - Génie mécanique - Fabrication d'outils - Planification de la construction

Willi Hug

Consultancy & Sales
  +41 41 618 61 52
willi.hug@bwb-group.com

BWB-Betschart AG

Dallenwilerstrasse 20
CH-6370 Stans-Oberdorf
  +41 41 618 61 61
Location

Daniel Stutz

Daniel Stutz

Sales Manager Industry
  +41 71 858 61 82
  +41 79 792 85 21
daniel.stutz@bwb-group.com

BWB-Altenrhein AG

Park Altenrhein
CH-9423 Altenrhein
  +41 71 858 61 61
Location

Rebecca Frei

Rebecca Frei

Operations Manager
  +41 31 970 01 60
rebecca.frei@bwb-group.com

Schlierholz Eloxal AG

Freiburgstrasse 576
CH-3172 Niederwangen
  +41 31 970 01 61
Location

Martin Hutter

Martin Hutter

Director
  +41 31 710 10 03
m.hutter@aloxyd.ch

Aloxyd AG

Dorfstrasse 9-13
CH-3506 Grosshöchstetten
+41 31 710 10 00
Location

Your contact person in Germany

Marcus Kolb

Marcus Kolb

Manager Sales and Marketing
  +49 351 8831 450
marcus.kolb@flugzeuggalvanik.de
marketing@flugzeuggalvanik.de

Nehlsen-BWB Flugzeug-Galvanik Dresden GmbH & Co. KG

Grenzstraße 1a / 2
D-01109 Dresden
  +49 351 8831 400
Location

Your contact person in Romania

Robert Ciobotea

Robert Ciobotea

Plant Manager
  +40 368 443 473
   +40 799 205 511
ro.sales@bwb-group.com

BWB Surface Technology S.R.L.

Str. Hermann Oberth 30
RO-507075 Ghimbav / Braşov / Judetul Braşov
  +40 368 443 473
Location

Galerie