Image © Steve Brown Photography CC-BY-SA-3.0
A waterjet 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, and reaming.
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, waterjets can be used to cut materials as diverse as fish sticks and titanium. There are few materials that can't be effectively cut with a waterjet cutter; one of these is tempered glass which shatters when cut, regardless of the cutting technology used.
The most important benefit of the waterjet 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.
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.
What would you like to do next?
waterjet cut part
Waterjet cutting tips in your inbox. Sign up for our FREE e-mail course.
- How to find costs for waterjet cutting in your project
- Getting the best prices on waterjet cutting
- The easiest way to order waterjet cut parts
- How your projects can benefit from waterjet cutting
Not ready to sign up yet? Read more about how we use waterjet cutting to turn designs into real parts by clicking here.