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to put hydro-abrasive machining at the service of its customers.
Why Waterjet?
• Often eliminates the need for secondary processing
• No heat distortion or heat affected zones (HAZ)
• Reduces waste material
• Cuts burr free
• Cuts virtually any material
• Ability to stack material to increase part production
• Cutting prototype and production parts
• Quick turnaround time for high quality cut parts
• Cutting virtually any material up to 8" thick including:
• Steel • Marble
• Aluminum • Titanium
• Composites • Brass
• Glass • Foam
• Plastics • Granite
• Rubber • Wood and more...
What tolerances can we
expect from waterjet
cutting?
Parts to +.005" or looser
accuracy are what most
people are looking for.
The accuracy you will get
depends on the
accuracy of the machine,
part size and part
thickness.
It is possible to cut up to 8" thick steel and titanium on a production basis. There have
been cases where 12" thick materials have been cut. The vast majority of the users cut
between 1/4" to 2".
How it Works
Regular filtered tap water is pressurized to 60,000 psi or more and then forced to exit thru a
small orifice (.010”-.020” diameter) at speeds exceeding three times the speed of sound. A
small amount of abrasive sand is mixed with this jet stream. The jet is directed towards the
workpiece thru a focusing nozzle, consisting of a 3” long by .030” I.D. tube, usually made of
Tungsten Carbide or some very hard material. The abrasive action of the grains of sand
directed towards the material at such high speeds, easily and rapidly cuts the material with
efficiency and accuracy.
How thick is the kerf?
The kerf is about 10% larger than the mixing tube diameter. So, for a .030" mixing tube, the
kerf will be .033". Of course, the kerf will get larger as the mixing tube grows. Tube growth
is about .001" per 8 hours of jet-on time.
What taper can I expect?
The taper you get is a function of the cut speed. However, the worst taper you will get will
be equal to maximum kerf width at the top (example: .035") and 0.000" at the bottom. As
you slow down, the taper will be reduced until you get parallel sides. Most tapers you see
on good quality cuts are .002" to .004" on a side
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