Sherardising

Sherardising is a method of galvanising also called vapour galvanising. A layer of zinc is applied to the metal target object by heating the object in an airtight container with zinc powder. The temperature that the container reaches does not exceed the melting point of zinc. Another method of sherardisation is to expose the intended objects to vapour from molten zinc using a reducing gas to prevent oxidation.

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Sherardising is ideal for small parts and parts that require coating of inner surfaces, such as batches of small items. The original system was quite complicated and expensive; however, today there are new systems in use which are simple, cost effective, and relatively environmentally friendly.

More information on sherardising: BS EN 13811::2003 (this is the British/European Union standard).

See also

• Galvanising
• Hot-dip galvanizing
• Corrugated galvanised iron