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Water Jet CNC Machining

Water Jet CNC Machining. Dr. Scott K. Thomas Department Mechanical & Materials Engineering Wright State University. Outline. Water jet machining defined Applications Competing technologies Pros and cons. Water Jet Machining. High pressure water stream (40,000 psi) Abrasive (garnet)

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Water Jet CNC Machining

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  1. Water Jet CNC Machining Dr. Scott K. Thomas Department Mechanical & Materials Engineering Wright State University

  2. Outline • Water jet machining defined • Applications • Competing technologies • Pros and cons

  3. Water Jet Machining • High pressure water stream (40,000 psi) • Abrasive (garnet) • Nozzle • Cutting tool

  4. High pressure water in Abrasive in Nozzle assembly Water jet Flat plate stock

  5. Applications • Cut blanks or finished parts • Rapid prototyping • Short runs of specialized parts

  6. Competing Technologies • Electro-discharge machining (Wire EDM) • Laser cutters

  7. Pros and Cons • Pros: • No work hardening of pieces • Faster than EDM or Laser • Initial cost is less • Cons: • Accuracy is poor (0.003 inch) • Nozzle life is short (40 hours)

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