EML2322L-Abrasive Water Jet Processes

EML2322L-Abrasive Water Jet Processes - EML 2322L - MAE...

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EML 2322L -- MAE Design and Manufacturing Laboratory Abrasive Water Jet Processes Water Jet Machining (invented ~ 1970) A waterjet consists of a pressurized jet of water exiting a small orifice at extreme velocity. Used to cut soft materials such as foam, rubber, cloth, paper, food products, etc Typically, the inlet water is supplied at “ultra-high pressure”-- between 20,000 psi and 80,000 psi . The jewel is the orifice in which water exits to form the cutting stream. Typically jewels are made from sapphire, ruby, or diamond (thus, the name "jewel".)
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Water Jet Machining (con’t) Below is a jewel mounted in a steel insert. The orifice size of the jewel is typically 0.002” to 0.020” diameter. Basic fluid momentum analysis applied to the jet will show the water exiting the jet is approaching Mach 3 (approx. 2200 mph!) This nozzle is part of a 2 axis CNC machine that controls nozzle positioning and feedrate with respect to the workpiece. It works like the CNC milling machine except there is no rotating tool.
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Abrasive Water Jet (AWJ) Machining (invented ~ 1980)
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EML2322L-Abrasive Water Jet Processes - EML 2322L - MAE...

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