Shot blasting
Campbell Machinery Ltd
Campbell Machinery: Specialists in shot blasting and blast cleaning
Pressure blasting










Advantages to our Vaporblack Process

  • Blacking time dramatically reduced.
  • Non-hazardous blacking, environmentally friendly chemistry.
  • Self-contained, space-saving design.
  • Operation at room temperature (18°C to 24°C).
  • No pre-cleaning required.
  • No dimensional change to components.
  • Inherent corrosion protection.



Traditional methods of blacking iron and steel machined parts involve the use of aggressive caustic-based solutions, often in open tanks, operating at temperatures up to 140°C.

The Vaporblack process enables parts to be processed for blacking at room temperature (18°C to 24°C) employing a special chemical that is far more environmentally friendly than conventional solutions and non-hazardous to operators.

Typical process time is less than five minutes, compared with the 45 minutes needed for traditional blacking.


Process Description

The process comprises wet blast pre-cleaning in the first chamber to remove surface contamination, such as heat treatment oxides and scale, followed by blacking with Blackfast 181 blacking solution in the second chamber, a water wash and then the application of a surface sealant (Blackfast 833) using dip tanks mounted to the right of the second chamber.

The operation is carried out manually under preset process control parameters.

Immersion in Blackfast 181 removes minute particles of iron and steel from the component surface and replaces these with an iron copper complex, which is then oxidised (black). The surface complex produced by the process is similar to a phosphate finish but, importantly, there are no dimensional changes. The Blackfasted substrate will absorb oil / wax sealants into the component surface to give the treated parts corrosion protection.

Blacking iron and steel machined parts

Typical Applications :

  • Industrial Machinery Parts.
  • Cutting Tools.
  • Tool Holders.
  • Machine Tools.
  • Clutch Drive.
  • Drill Bits.
  • Hydraulic Machinery.
  • Hydraulic Blocks.
  • Taps and Dies.
  • Chains and Sprockets.
  • Springs.
  • Hand Tools.
  • Jigs and Fixtures.
  • Ball Screws.
  • Fasteners.
  • Gears


Vaporblack Blacking Machine.

The Vaporblack process can be used for any carbon steel component with a chrome content of up to 12%, and is primarily a decorative finish with excellent corrosion protection.        *Not to be confused with "Parkerising" or phosphating*



To top of page