How does a waterjet work?

There are two main steps involved in the waterjet cutting process. First the ultra-high pressure pump generally pressurizes normal tap water at pressure levels above 40,000 psi (2760 bar); to produce the energy required for cutting. Second water is then focused through a small precious stone orifice to form an intense cutting stream. The stream moves at a velocity of up to 2.5 times the speed of sound, depending on how the water pressure is exerted.
The process is applicable to both water only and abrasive jets. For abrasive cutting applications, abrasive garnet is fed into the abrasive mixing chamber, which is part of the cutting head body, to produce a coherent and an extremely energetic abrasive jet stream.

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