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zinc plating

Zinc Plating

The Anochrome Group is the UK’s largest independent specialist surface coatings service provider, offering expert zinc plating services to companies around the world. Anochrome’s first class zinc plating processes give excellent sacrificial protection to underlying metals, and we can also provide many different types of passivates, top coats and torque modifiers depending on the needs of our clients.

The Anochrome Group offers zinc electroplating at Wolverhampton Electro Plating Ltd, at Anochrome Walsall in bulk and at Farnborough Metal Finishing in smaller volumes. We also offer zinc nickel plating services, more information can be found on our zinc nickel plating page. Additional specialist finishes such as zinc iron and bright nickel are available.

What is zinc plating?

Electrodeposited zinc, or to call the finish by the more well-known name of zinc plating, is traditionally one of the most cost effective methods of protecting iron or steel from corrosion. This method lays a thin film of zinc over the surface to provide sacrificial protection to the underlying substrate. The term sacrificial refers to the way the zinc corrodes in preference to the substrate and so protects the covered steel, it also has the additional benefit that steel exposed at cut or abraded areas will not easily rust.

Zinc plated finishes are normally enhanced by a post-plating conversion coating more commonly known as a passivate. This dip process applies a thin coating onto the surface of the zinc, which in recent years, due to the ELV Directives requirement for hexavalent chromium-free coatings, has resulted in new passivates being developed. Generally these fall into two categories of trivalent passivate – lightweight or heavyweight – depending upon the finish performance or specification required.

Additional coatings can be added to further improve the salt spray performance or to modify the lubricity of the component or fastener by the addition of top coat torque modifiers. These are available in a range of values to suit the majority of automotive specifications from 0.008µm.

Anochrome offers an extensive range of passivates, tops coats and torque modifiers including the following:

  • Finigard 105
  • Magni 560 system
  • JS500
  • ELV1500 and ELV3000 heavy weight passivates
  • Almac
  • Inverplex
  • Trivalent clear and trivalent black
  • Deltacoll GZ
  • Delta Seal
  • TT11, and 15 from MacDermid
  • PlusVl, MLBlack XLred from NOF
  • Gleitmo
  • A3 wax
  • Lanthane

We understand that a tailored approach to zinc plating is essential to your business. You can email us via the Contact page to discuss your individual requirements with an expert. We are also happy to provide you with further information on the zinc plating process by email, or alternatively you can call us on 01902 397333.