ARCHITECTURE & DESIGN

Transcription

1 SURFACE TREATMENT ENGINEERING FOR ARCHITECTURE & DESIGN Machining and finishing of aluminum

2 02_ ANODISING BY BWB THE ADVANTAGES OF ANODISING

3 The BWB anodising procedures (electrolytic oxidation) combine the advantages of the electrochemically produced aluminum oxide layer with the aesthetic virtues of coloured aluminum in architecture and design. With the BWB anodising and colouration techniques, the aluminum retains its metallic nature. Corrosion resistance Anodising the aluminum produces a resilient and corrosion-resistant protective layer. This ensures that components retain their value over decades. Colour retention With the BWB colouration techniques, the dye sits inside the pores of the anodised layer. Unique to the Permalux procedure, the colour effect is achieved by means of the integral layer structure. In the subsequent sealing process, all pores are closed. This results in extraordinarily high colourfastness. Light resistance The lightfastness of the dyes used is considerably higher than the highest value on the Blue Scale as per ISO and complies with the EURAS guidelines. All colours exhibit excellent light resistance. Investment in the future The mechanical strength of anodised aluminum is very high. Even during slightly abrasive cleaning of the aluminum, the surface is not damaged. With proper maintenance, anodised alu minum parts retain their decorative value and metallic nature for decades. Ecology / recycling Comprehensive evaluation of economic and ecological aspects speaks in favour of the use of anodised aluminum as a material in architecture. Anodised aluminum also stands out due to low-emission colouration techniques, the high degree of recyclability and the very high stability of value.

4 04 _ SURFACE CONVERSION PROCEDURES SURFACE CONVERSION PROCEDURES FOR ARCHITECTURE AND DESIGN

5 BWB carries out a very wide range of surface conversion procedures on components for architecture and design, in order to satisfy a variety of requirements regarding function, aesthetics and corrosion protection. Anodising Electrolytic oxidation also known as anodising is an electrochemical process: the surface of the aluminum is converted into aluminum oxide from the inside out. This oxide layer is solidly attached to the base material; to use a metaphor, it gets under its skin. An accurate topographical copy of the original structure is created, and the surface retains its metallic look. With the multitude of anodising procedures offered by BWB, it is possible to produce oxide layers with very different properties. Thus, procedure-specific oxide layers with different thicknesses and colours can be manufactured to satisfy the respective requirements. Sealing With electrochemically produced oxide layers, the pores of the oxide layer are closed in a subsequent operation. This makes it very difficult for foreign matter, such as dust or dirt, to adhere to the surface, and causes the surface to become tack-free. Before sealing, adsorbed chromophoric materials are embedded and fixed within the oxide layer. The well-sealed oxide layer is enormously important for a topquality surface on the work piece (weather resistance, etc.). For this reason, sealing is monitored in a correspondingly strict manner. BWB offers the following electrolytic surface conversion procedures for architecture and design: Anodising / electrolytic oxidation Permalux colour hard anodising Colouration Sanodal Bronze Sandalor Colinal Spectrocolor

6 06 _ PRE-TREATMENTS AND POST-TREATMENTS FOR ANODISING PRE-TREATMENTS AND POST-TREATMENTS FOR ANODISING ALL FROM A SINGLE SOURCE

7 A clean surface on the work piece is a precondition for an even and stable surface finish. BWB offers competent advice, for optimal fulfilment of the customer s wishes and ideas. Mechanical pre-treatments A mechanical pre-treatment is recommended in the event of damage, faults or irregularities in a surface. However, it is also used in order to achieve a special finish and implemented with the following surface processing procedures. The surface thus becomes matt or polished, depending on the selected procedure: E1 grinding* (light grinding for matt etching) E2 brushing* (light grinding and brushing) E4 grinding and brushing* (clean grinding and brushing) E5 grinding and polishing* (clean grinding and polishing) Profiles only minor processing marks must be treated or concealed in a chemical pre-treatment. Here, BWB offers the following procedures: E0 degreasing and deoxidising* (industry anodising) E6 etching* (matt etching) Post-treatments BWB offers the following post-treatment methods for components: Anti-noise coatings Film coating Chemical pre-treatments Chemical or electrochemical finishing of aluminum surfaces requires a suitable pretreatment. Contamination, corrosion or Q labels QUALANOD British Standard SSG Structural Glazing * See glossary on page 11

8 08_ YOUR PARTNER FOR SURFACE TREATMENT ENGINEERING YOUR PARTNER FOR SURFACE TREATMENT ENGINEERING COMPETENT, RELIABLE, EXPERIENCED

9 As a designer or planner, your requirements vary. Whether for purely functional aspects, for aesthetic criteria, or both combined: BWB offers you comprehensive advice on material, colour, machining and structural design. Material selection BWB has long-standing expertise in the selection and procurement of the right material for demanding projects in architecture and design. We advise you when selecting material. For decorative applications, aluminum alloys of anodising quality must be used. Structural design advice Early integration of BWB experts into the project guarantees a more successful implementation of surface finishing. This enables typical peculiarities of the respective proced ures to be accounted for in the structural design and integrated into the project in good time. The bath sizes limit the dimensions of the work pieces to be finished. The BWB sales team provides you with competent advice in this regard. Special attention is also paid to welded structures. Special effects With the interplay of mechanical and chemical pre-treatments and the different anodising procedures, various special effects are achieved. The BWB advisors are happy to help you. Sampling The colour chart on the next page can be used for initial selection of the colour tone. In order to determine the exact colour tone, a standard hand sample may be necessary. For object sampling, it is advisable to define not only the mechanical and chemical pretreatment, but also the anodising and colouration with the original material.

10 10 _ ALUMINUM COLOUR CHART BWB Natural Colour colourless) Layer thicknesses 10, 15, 20, 25 µm Cost-efficient, environmentally friendly procedure Natural Colour (colourless) EV1 BWB Colinal Electrolytic colouration procedure Very good colour equality, no chalking BWB Colinal 3115 ( Euras C - 31) BWB Colinal 3145 ( Euras C - 32) BWB Colinal 3165 ( Euras C - 33) BWB Sanodal Adsorptive colouration procedure No chalking BWB Argentan BWB Brass BWB Gold BWB Bronze Combined electrolytic-adsorptive colouration procedure Distinctive colours, no chalking BWB Bronze 3 BWB Bronze 4 BWB Bronze 5 BWB Sandalor Basis* Adsorptive colouration procedure Bright colours, no chalking BWB Sandalor C60-1 BWB Sandalor C62-1 BWB Sandalor C63-1 BWB Sandalor Combi* A combined electrolytic-adsorptive colouration procedure Distinctive colours, no chalking BWB Sandalor C60-2 C60-3 C60-4 C62-2 C62-3 C62-4 BWB Permalux* Integral colouration procedure Maximum durability, colour-play/light-play, no chalking The Permalux colours are created during the oxidation process and are extraordinarily hard, durable and corrosion-resistant. BWB Permalux P1 BWB Permalux P2 BWB Permalux P3 BWB Spectrocolor* Interference (colouration procedure) Bright colours, colour-play/light-play, no chalking BWB Spectrocolor blue BWB Spectrocolor green Interference effect With the interference colouration procedure Spectrocolor, aluminum surfaces can be given many colours with dazzling light-play. Surfaces with this finish can be used both indoors and outdoors. In order to determine the exact colouring, comprehensive object sampling with original material must be carried out. * Manufacture in Altenrhein only

11 BWB Colinal 3175 BWB Colinal 3178 ( Euras C - 34) BWB Colinal 3180 ( Euras C - 35) The colour samples shown in this colour chart serve only as orientation. For technical reasons, it is impossible to print an exact reproduction of how the material appears after anodising and colouration of the aluminum. For sampling of aluminum components for architecture, contact our customer service team. Please note that the appearance of metal sheets and profiles can vary, even with the same treatment and dye. In addition, we refer to the guidelines and quality regulations for anodised aluminum facade components, from the Swiss Centre for Windows and Facades (SZFF), as well as DIN Other shades also available. Colour selection For architecture, the BWB Group offers you a broad palette of colours to choose from. However, in order to evalu ate colours correctly, we recommend that you get us to carry out sampling with original parts and with the designated aluminum alloy. BWB Bronze 21 BWB Sandalor C64-1 BWB Sandalor C63-2 C63-3 C63-4 C64-2 C64-3 BWB Permalux P4 Glossary DIN E0 E1 E2 E4 E5 E6 Anodised products of wrought aluminum alloys technical conditions for delivery Degreasing and deoxidising Grinding Brushing Grinding and brushing Grinding and polishing Etching BWB terminology Industry anodising Light grinding for matt etching Light grinding and brushing Clean grinding and brushing Clean grinding and polishing Profiles only Matt etching

12 12 _ YOUR CONTACT PARTNERS BWB is happy to advise you on material selection and procedures The BWB Group is your partner for the machining and finishing of aluminum Due to our wealth of experience in surface treatment engineering, we offer economical all-in-one solutions for architecture, industry and design from competent advice, to material procurement, right through to implementation, delivery and assembly. With our production sites, we have good regional support and are always where you need us. Rudolfstetten Schlieren Altenrhein La-Chaux-de-Fonds Büren a.a. Niederwangen Stans-Oberdorf BWB-Bürox AG Industriestrasse 15 CH-3294 Büren a.a. T bueren@bwb-group.com BWB-Altenrhein AG Park Altenrhein CH-9423 Altenrhein T altenrhein@bwb-group.com BWB Group