galvanizing

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    The Coatinc Company Holding GmbH
    Hüttenstraße 45
    57223 Kreuztal

    Your contact person:
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    am.prax@coatinc.com

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    The Coatinc Company Holding GmbH
    Steinstraße 5
    57072 Siegen, Germany
    Phone: +49 271 43478
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    p.boehmer@coatinc.com

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    Carolinenglückstraße 6-10
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    Phone: +49 234 52905-0
    Fax: +49 234 52905-15

    Constructing components suitable for hot-galvanising

    How to create the best conditions

    In order for a construction to harmonise with hot-galvanising as perfectly as possible, it is important that size and weight are defined in advance. In an ideal case this would be coordinated with your consultant for hot-galvanising. Mechanical work on a construction must be completed in advance and it should be ensured that tensions in the construction are avoided. Components with a material thickness as similar as possible are ideal. The difference between maximum and minimum material thickness should be less than factor 2.5 for normal components wherever possible. This can be increased to factor 5 for connectors and foot plates. The surface structure of the basic material should be free of colour, old coats or lettering and roughened. A metallic clean steel surface is the basic prerequisite for hot-galvanising. Paints, oils and grease or grease remains should also be removed as this can impair the coating.

    In order to prevent components with hollows from causing a dangerous pressure explosion in a 450°C hot zinc bath, galvanising holes should be drilled before the zinc bath to prevent components from being damaged. The size of the drilled hole depends on the air volume which has to pass through the openings. In order to avoid gaps in the galvanising it should be ensured that blind spots and corners are avoided.

    Problematic area flame cut edges

    In the case of edges which are cut using an oxyacetylene flame or plasma, oxygen is extremely important as cutting gas. Due to the process of cutting it is unavoidable, for example to prevent a change in roughness, hardening or chemical composition. Different cutting techniques lead to differences in the roughness of cutting edges. Each of these individual factors can influence the construction, thickness and appearance.

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