Chapter 7 Non Conventional Machining

The following are the characteristic of a NON-CONVENTIONAL machining, EXCEPT.....

• No tool wear

• Low noise pollution

• Comparatively low cost in machine set up

• Require complex and skillful operations

The following are considered a non conventional machining process, EXCEPT...

• Abrasive Water Jet Machining

• Electrochemical Machining

• Lathe Machining

• Electro-discharge Machining

Why the Water-jet Machining is not suitable for very thick work piece?

• It will cause Burr.

• The work piece will over heat and melt.

• The water jet have less consistent impact as the distance increases

• The impact of the water jet on the work piece will cause deflection.

What is the function of an intensifier in the Water Jet system?

• Store water

• Control water flow

• Increase the water pressure

• Increase the kinetic energy of the water

In the ElectroChemical Machining process, there is the tool and work piece. Which is the Cathode in the configuration?

• Tool

• Work piece

Which of the following is the advantage of ElectroChemical Machining?

• Able to produce any shape (including Sharp Corner).

• Low investment cost

• Corrosion Free

• Low power consumption

How does an Electrical-Discharge Machining removes material from work piece?

• By corrosion of chemical process

• By electrical sparks

• By melting it with laser beam

• By spraying the material with water jet

In a Electrical-Discharge Machining, what is the width (with the "?") of the cut (shown in figure) called?

• Kraft

• Spark Gap

• Kerf / Slot

• Reel

Why doea the ND:YAG more suitable for metal than a CO2 Laser?

• ND:YAG has higher wavelength

• ND:YAG has lower wavelength

Which is the correct sequence to a Chemical Machining?

• Clean material > Masking > Etching > Clean Mask

• Clean Mask > Clean Material > Masking > Etching

• Clean Mask > Masking > Etching > Clean Material

• Masking > Etching > Clean Mask > Clean Material