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A water jet cutter is a tool capable of slicing into Metal or other materials using a jet of Water at high velocity and pressure, or a mixture of water and an Abrasive substance. The process is essentially the same as Water Erosion found in nature but accelerated and concentrated by orders of magnitude. It is often used during fabrication or manufacture of parts for machinery and other devices. It has found applications in a diverse number of industries from Mining to Aerospace where it is used for operations such as cutting, shaping, Carving , reaming.


OPERATION

The cutter is commonly connected to a high- Pressure water pump (a local Water Main does not supply sufficient pressure) where the water is then ejected out of the nozzle, cutting through the material by bombarding it with the stream of high-speed water. Additives in the form of suspended grit or other abrasives, such as Garnet and Aluminum Oxide , can assist in this process. Because the nature of the cutting stream can be easily modified, water jets can be used to cut materials as diverse as Fish Stick s and Titanium . There are few materials that can't be effectively cut with a water jet cutter; one of these is Tempered Glass which shatters when cut, regardless of the cutting technology used.

The most important benefit of the water jet cutter is its ability to cut material without interfering with the material's inherent structure as there is no "heat affected zone" or HAZ. This allows metals to be cut without harming or changing their intrinsic properties.


HISTORY

In the 1950s , forestry engineer Dr. Norman Franz experimented with an early form of water jet cutter to cut Lumber . However, the technology didn't advance notably until the 1970s . Today the water jet is unparallelled in many aspects of cutting and has changed the way many products are manufactured. Many types of water jets exist today, including plain water jets, abrasive water jets, percussive water jets, Cavitation jets and hybrid jets.


EXTERNAL LINKS


  • KMT Waterjet Cutting Systems , Manufacturer of High Pressure Intensifiers, cutting heads and abrasive equipment. KMT makes the Streamline and Autoline range of products and have interesting media and information on their website.


  • LAI International, Inc. , Contract manufacturing service provider of advanced waterjet machining services for industry, including high-speed watejet cutting, precision waterjet hole-drilling, and five-axes waterjet cutting and trimming.


  • WARDJet - learn more , Manufacturer of a variety of styles of CNC waterjet cutting machines. WARDJet makes the only abrasive recycler, capable of capturing and recycling garnet or aluminum oxide for reuse in abrasive waterjet cutting. Numerous videos online.


  • Flow International , inventor of the technology, manufactures ultra high pressure pumps and waterjet cutting equipment. There are also some videos there explaining the technology.