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trialcast

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  2. 4rt Black Frame

    in Montesa

    Posted · Edited by Trialcast

    The anodising process

    Aluminium components are anodised by placing them in an acid, applying a voltage (the component is made the anode -- hence the term anodising) and artificially growing their own oxide to an even controlled thickness. This anodic thickness is not a surface coating, but is integral with the metal so a cut through it will not allow corrosion to creep between the metal and oxide.

    Sulphuric acid anodising

    The most common form of anodising is sulphuric acid anodising which offers an anodic film thickness beteen 3 and 25microns, depending on the end use of the components. The lower to middle ranges are ideal for decorative finishes which may be dyed, etched and/or brightened to enhancve the component's appearance. Anodic film thicknesses above 15microns are used for increased durability and external applications, where corrosion reistance and wear are the main criteria.

    Chromic acid anodising

    Chromic acid anodising produces an anodic film thickness between 3 and 7micorns. It does not have the same wear properties as sulphuric acid, but is more ductile and has frequent aerospace and militatry application, where it also provides a good "key" for paint and bonding. Chromic anodising is opaque in appearance and has the ability to detect cracks in cast components and emphasise grain structure in forgings.

    Alocrom

    Alocrom is the creation of a chromated conversion coating on aluminium prior to painting or powder coating. It provides a temporary protection and has electrically conductive properties.

    Powder coating

    Powder coating is an electrostatic process where powdered pigment is sprayed from a gun and is electrically attracted towards a component. Electrostatics ensures pigment is attracted to all exterior faces and no solvent is required. Finishes can range from high-gloss and metallic, to textured or clear.

    Wet painting

    Wet painting involves spraying a pigment suspended in a solvent onto a component which is rotated to give complete coverage. Almost any shape of object can be coated, including those with cavities.

    This website offers much more info on other coatings and i can highly recommend them, I use their Plastisol coatings on my footpegs, and their PTFE coatings on some of my cams.

    http://www.plasticcoatings.co.uk/processes.html

  3. Jack Challoner ( Ttt )

    in UK Trials Talk

    Posted · Edited by Trialcast

    Fantastic news Jack. It is a great achievement and one you richly deserve. Andy and i wish you every success for the future and hope this is the stepping stone to bigger and better things. The dream starts here mate.......the very best of wishes to you and your family, you will have made them all very proud.

  9. Jitsie Lever Adjusters

    in Beta

    Posted

    its only a point im making freedom of speech and all that, i think some the trial cast stuff is cheap and tacky looking whats wrong with that.

    Ouch !! : :thumbup:

    All your feedback is greatly appreciated, even the negative stuff.

  14. Gasser Upgrades/tit Bits/cool Stuff!

    in Gas Gas

    Posted

    also will powder coating rub off with my legs?

    Powder coating will eventually wear off over time, but it is a fairly resiliant coating. For a bullet proof coating have you considered a bakeware product such as Teflon. There are a wide variety of colours, but the matt black is the best.

  
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