Waterjet cutting

Technical details & information

What is Waterjet Cutting?

High-pressure water being forced through a small orifice/jewel to concentrate an extreme amount of energy in a small area. The restriction of the tiny orifice creates high pressure and a high-velocity beam, much like putting your finger over the end of a garden hose.

Pure waterjets use the beam of water exiting the orifice to cut soft material, but are not effective for cutting harder materials.

The inlet water for a pure waterjet is pressurized between 20,000 and 60,000 (PSI) (1300 to 6200 bar). This is forced through a tiny hole in the orifice/jewel, which is typically (0.18 to 0.4 mm). This creates a very high-velocity, very thin beam of water traveling as close to the speed of sound (about 600 mph or 960 km/hr).

An abrasivejet starts out the same as a pure waterjet. As the thin stream of water leaves the jewel, however, abrasive is added to the the stream and mixed. The high-velocity water exiting the jewel creates a vacuum which pulls abrasive from the abrasive line, which then mixes with the water in the mixing tube. The beam of water accelerates abrasive particles to speeds fast enough to cut through much harder materials.

The cutting action of an abrasivejet is two-fold. The force of the water and abrasive erodes the material, even if the jet is stationary. The cutting action is greatly enhanced if the abrasivejet stream is moved across the material.

Our machines and capabilities

ByJet Flex 4030 3D Head

  • Can retrofit up to two 3D cutting heads, each with a continuous height sensor
  • 4M x 3M Cutting area
  • Material cutting height of 250mm, greater can be achieved if required
  • High parts production through reliable high-pressure technology
  • Repeatability to 0.025mm
  • Most resistant materials can be cut, without a heat effected edge
  • Cuttable materials:- Acrylic, Aluminium, Brass, Bronze, Carbon Fibre, Ceramics, Composites, Copper, Plastics, Steel, Stainless Steel, Titanium, Various types of Wood

Book our waterjet services today

Call us on 0208 9535 062

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  • Hartoms Waterjet was referred to me from a friend. I used Hartoms Waterjet and was very pleased with the Quality and Speed of the works

    Liam McGarry London
  • I have been using Hartoms for years, very impressed with their new waterjet service

    P Rock Borehamwood
  • Thank you for your help in cutting our 20mm Stainless Steel spacers. The quality of cut was much better than our last batch from laser cutting. The quick turnaround enabled us to meet our deadline”

    Peter Dudzik London
  • The waterjet cutting service you provided us on our stonework saved us a lot of time and was able to achieve what we previously thought was impossible

    Chris Glenister Grimsby
  • Very impressed with the service provided, will definitely be using you again

    Ted Andrews St Albans