The Basics
The concept of waterjet is quite simple. Here’s how it works:
Generate Pressure
An ultrahigh-pressure pump generates a stream of water with pressure rated up to 94,000 psi (6,480 bar). To put it into perspective, a fire hose contains a pressure of 390 to 1,200 psi (20 to 84 bar).
Convert Pressure into Velocity
This pressure is converted into velocity via a tiny jewel orifice, creating a stream as small as a human hair which can cut soft materials.
Introduce Garnet
To increase cutting power by 1,000x, garnet is pulled into the supersonic waterjet stream. Water and garnet exit the cutting head at nearly four times the speed of sound, capable of cutting steel over one foot thick.
Components of Waterjet
A waterjet is more than just pressurized water and sand. The shapecutting system is comprised of:
1-The Ultrahigh-Pressure System
includes the pump, cutting head, and plumbing
2-The Machine
includes the X, Y, Z axes, cutting head wrist axes, and material support catcher
3-The Control System
includes the programming software, operator interface, drive motors, and position and velocity feedback system
