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What are utility and control-cabinet keys coated with?

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Utility and control or service cabinet key made with different materials and coatings. The parts of a utility and control-cabinet key are coated with different materials depending on what the part is made of.

Chrome electroplating

Zinc utility and control or service cabinet key without a coating. Zinc alloy parts (see {{widget type=”cms/widget_page_link” template=”cms/widget/link/link_block.phtml” page_id=”3367″}}) do not always need to be coated as they are very resistant to corrosion and have an aesthetically pleasing look straight out of the mould…
Chrome plated zinc utility and control or service cabinet key …but some manufacturers use zinc alloys that corrode faster than pure zinc and so cover the part in a chromium layer. The process is known as ‘chrome electroplating’. It is called electroplating because electricity is passed through the part which makes the new metal coat stick to it.
A coat of copper is bound to the utility and control or service cabinet key to be chrome electroplated. First the zinc part is placed in a copper bath. The copper makes the surface of the zinc part the same all over and increases its electrical conductivity (ability for electricity to pass through it).
Nickel is used as a second coat over copper when chrome electroplating utility and control or service keys. A couple of coats of nickel are applied to prevent corrosion of the copper…
Chromium is used to cover zinc to create a very shiny utility and control or service cabinet key. …and, finally, the part is placed in a chromium bath to receive the final coatings. The chromium protects the nickel from damage and creates a very shiny surface.

Powder coating

Powder coating coats the metal of the utility and control or services cabinet key. It's made of plastic powder. Powder coatings are made of plastic and are used on steel parts to protect the surface of the steel from light damage and water, which can result in rusting of the steel.
The powder is sprayed onto the object where it sticks due to electromagnetic properties. The powder is sprayed onto the part. It sticks due to static electricity. The powder is heated and forms a hard, thick coat which is less likely to chip than paint.

Varnish

Varnish is sometimes used to be a coat on plastic parts of utility and control or service cabinet keys Some plastics have a varnished surface to protect it from knocks and scrapes.
Varnish is a clear, hard layer that protects the material from knocks and scrapes Varnish is a liquid made from a resin and a solvent. It dries into a very hard, transparent layer.