Pressure MattersWaterjets cut with a supersonic waterjet stream. The only way to make a waterjet stream go faster is to raise pressure. As pressure goes up, the stream velocity increases, delivering greater cutting power density. What is cutting power density?
The Waterjet Pump
The waterjet pump is at the heart of it.The pump is the heart of the waterjet system, pressurizing water so that it can be continuously delivered to the cutting head – and turned into a supersonic waterjet stream.
Waterjets cut with stream velocity.How do you get velocity? With ultrahigh-pressure water.
Ordinary tap water is filtered and fed into a waterjet pump rated to pressures of 60,000 to 94,000 psi (~4100 to 6400 bar). The pressurized water runs to the cutting head safely contained within the plumbing to maintain pressure. At the cutting head, the water to pass through the jewel orifice and the supersonic waterjet stream is created.
All the pressure is exchanged for velocity when the water passes out of the jewel orifice. The higher the pressure, the higher the stream velocity.