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  2. Surface finishing - Wikipedia

    en.wikipedia.org/wiki/Surface_finishing

    A #7 finish is produced by polishing with a 280–320 grit belt or wheel and sisal buffing with a cut and color compound. This is a semi-bright finish that will still have some polishing lines, but they will be very dull. Carbon steel and iron are commonly polished to a #7 finish before chrome plating.

  3. Ebonite - Wikipedia

    en.wikipedia.org/wiki/Ebonite

    Ebonite applications from the 19th century. Ebonite is a brand name for a material generically known as hard rubber or vulcanite, obtained via vulcanizing natural rubber for prolonged periods. Ebonite may contain from 25% to 80% sulfur and linseed oil. [1] [2] Its name comes from its intended use as an artificial substitute for ebony wood.

  4. Chemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Chemical_coloring_of_metals

    Chemical coloring of metals is the process of changing the color of metal surfaces with different chemical solutions. The chemical coloring of metals can be split into three types: electroplating – coating the metal surface with another metal using electrolysis. patination – chemically reacting the metal surface to form a colored oxide or ...

  5. Electropolishing - Wikipedia

    en.wikipedia.org/wiki/Electropolishing

    Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing (especially in the metallography field), is an electrochemical process that removes material from a metallic workpiece, reducing the surface roughness by levelling micro-peaks and valleys, improving the surface finish.

  6. Powder coating - Wikipedia

    en.wikipedia.org/wiki/Powder_coating

    The object is then heated, and the powder melts into a uniform film, and is then cooled to form a hard coating. It is also common to heat the metal first and then spray the powder onto the hot substrate. Preheating can help to achieve a more uniform finish but can also create other problems, such as runs caused by excess powder.

  7. Hammer paint - Wikipedia

    en.wikipedia.org/wiki/Hammer_paint

    With hammer paint, this step can be omitted. Some hammer paints (e.g. by Hammerite) are formulated to be usable directly on rusted steel without surface preparation other than brushing to remove the loose rust. Beyond that, the mica improves the durability and color of the paint job. [2]

  8. Japanning - Wikipedia

    en.wikipedia.org/wiki/Japanning

    Japanning is a type of finish that originated as a European imitation of East Asian lacquerwork. It was first used on furniture, but was later much used on small items in metal. The word originated in the 17th century. American work, except in the carriage and early automobile industries, is more often called toleware. [1]

  9. Phosphate conversion coating - Wikipedia

    en.wikipedia.org/wiki/Phosphate_conversion_coating

    [5]: 394 It has also been known as pickling in the context of wrought iron and steel. [11] Parkerizing is commonly used on firearms as a more effective alternative to bluing, which is an earlier-developed chemical conversion coating. It is also used extensively on automobiles to protect unfinished metal parts from corrosion.