PVD coating

PVD coating — one of the best facilities in Britain

Produces a hard thin layer in a variety of striking colours. Reduces friction, gives better wear resistance and does not tarnish.

Benefits

  • Prevents fretting and galling

  • Saves on plant downtime

  • Allows higher speeds

  • Lubrication reduction

  • Better surface finish

How PVD coating works

Titanium, titanium/aluminium mixes or chromium are vaporised into a gas cloud. The items to be coated are meticulously cleaned, inspected and loaded into a vacuum chamber. Metal ions are introduced and a high DC voltage applied, causing the ions to bombard and clean the surface and build up to an adhesion layer. A very thin layer, between 2 and 10 microns is produced and even the most complex shapes can be coated.

Details

Titanium nitride (TiN) coating

  • Hardness: 2500HV
  • Colour: gold
  • Typical uses: tools / plastic moulds / medical implants / electronics / decoration

Chromium nitride (CrN) coating

  • Hardness: 2000HV
  • Colour: silver
  • Typical uses: tools for non-ferrous use / forming tools for steel / anti-corrosion / high temperature use / die-casting

Titanium aluminium nitride (TiAlN) coating

  • Hardness: 3000HV
  • Colour: blue/black
  • Typical uses: high-rate tools / interrupted cutting / high temperature use / decoration

Suitable materials

  • Any tool steel
  • HSS & carbide
  • Stainless steel
  • Titanium
  • Aluminium
  • Brass/copper alloys
  • Chrome/nickel plated metals

Low treatment temperature

  • No distortion
  • No loss of hardness

Cost effectiveness

  • Increases tool life
  • Saves on plant down time
  • Re-coating after re-polishing
  • Re-coating after re-grinding

Quality

  • Approved to ISO9001:2008
  • Accurate control of coating
  • Repeat items coated identically

Example applications

  • Cutting tools
  • Forming tools
  • Knives & blades
  • Bearings & slides
  • Seals & valves
  • Aerospace
  • Racing car & bike components
  • Food & chemical processing
  • Paper & plastic processing