Mechanical Energy Processes

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Questions and Answers

What is the typical range of concentration of abrasives in water used in Ultrasonic Machining (USM)?

  • Less than 20%
  • More than 80%
  • 20% to 60% (correct)
  • 60% to 80%

What is the typical nozzle diameter used for Water Jet Cutting (WJC)?

  • 0.01-0.05 mm
  • 0.5-1.0 mm
  • 0.1-0.4 mm (correct)
  • 1.0-2.0 mm

What is the main advantage of Water Jet Cutting (WJC) over other cutting methods?

  • Produces high material removal rates
  • Allows for sharp corners to be generated
  • Does not produce environmental pollution (correct)
  • Can cut any material regardless of electrical conductivity

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Study Notes

Ultrasonic Machining (USM)

  • Concentration of abrasives in water used in USM ranges from 20% to 60% by weight.

Water Jet Cutting (WJC)

  • Typical nozzle diameter used for WJC is around 0.1-0.4 mm.
  • Main advantage of WJC over other cutting methods is its ability to cut complex shapes and profiles without generating heat, making it suitable for cutting materials that are sensitive to heat.

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