Coating of tools


 

Our coatings are the preferred coatings for machining, shaping and stamping processes as well as in all areas where friction-related properties need improvement.

Machining

Our PVD coatings excel in the machining industry as a result of the following advantages:

  • Significantly longer working life
  • No material build-up on the cutting edges
  • High temperatures displaced into the chips
  • Increased cutting parameters
  • Dry machining possible
  • High speed cutting possible

Recommendations for specific applications are to be found in our data sheet.

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Shaping and stamping technology

Our PVD coatings excel for shaping and stamping applications as a result of the following advantages:

  • Low tendency to build-up
  • Significantly longer working life
  • No sticking and cold build-up
  • Optimisation of the flow characteristics
  • Clean cuts and therefore less dressing needed for the work-piece. Reduced coefficient of friction and therefore reduction in the stamping and retraction forces.

Recommendations for specific applications are to be found in our data sheet.

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Plastics technology

Our PVD coatings excel for the plastics processing industry as a result of the following advantages:

  • Excellent wear protection
    Protection of structured tools and protection against damage to finishes
  • Improved demoulding properties
  • Faster filling => shorter cycle time
  • Reduced cleaning through reduction of plate-out
  • Increased production reliability
  • Improved surface quality of the plastic parts
  • Reduced distortion of the plastic parts

Recommendations for specific applications are to be found in our data sheet.

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Friction-reducing coatings for tools

In the fields of tool-making, machine and mould construction and the machining of aluminium we favour TT®-DLC and TT®-C-DLC as friction-reducing coatings.

TT®-DLC is a metal-free diamond-like layer of carbon and is deposited at low temperatures using the PACVD process. The combination of good wear-resistance and outstanding frictional and non-stick properties makes TT®-DLC coatings an ideal surface treatment for components and tools subject to high frictional forces.

TT®-C-DLC coatings are a sub-group of the amorphous, diamond-like carbon coatings (DLC - Diamond-Like Carbon). Unlike the majority of the commercially available TT®-DLC coatings, they are not deposited from gaseous hydrocarbons (e.g. acetylene or methane) using the plasma-activated CVD process (PACVD-Plasma Assisted Chemical Vapour Deposition). They are produced using the PVD process (Physical Vapour Deposition) by sputtering a carbon target. The addition of reactive gases during the coating process enables the hydrogen content and therefore the mechanical and tribological properties of the coating to be adjusted to optimise the properties for the application in question.

TT®-C-DLC coatings can achieve both a higher hardness and a lower coefficient of friction than the TT®-DLC coatings deposited by the PACVD process. The properties of
TT®-C-DLC coatings are summarised in the table.

TT®-C-DLC coatings are normally deposited with a thickness of 1.5 ± 0.5 μm. Because of their properties, TT®-C-DLC coatings are readily used when manufacturing standard components.

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  • TiCN coated cavity plates
  • TT-DLC coated milling tool for machining aluminium
  • NovaDur HC f coated drill
  • NovaDur HC f coated drill
  • NovaDur F coated hob cutter
  • Cr2N coated injection moulding die
  • Milling test
  • NovaDur HC coated cutting tools
  • TiN and TT-DLC coated injection moulding die
  • TiN coated screw tip
  • Cutter heads with various coatings
  • TiN-coated gradually countersink

We update and optimise precision machine tools and high-grade components.