Quiz
EDM
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Questions in this quiz (18)
1EDM is a way of removing metal from a work piece using a
- Acontrolled spark
- Bcontrolled cut
- Ccold electrode
2What are the two kind of EDM machining processes
- AWire
- BPlunge
- CSink
- DMill
3EDM is not a stress free machining operation and requires vast amounts of torque to keep the work piece in place
- ATrue
- BFalse
4Wire EDM creates a
- AConsistent rough surface finish which needs grinding to finish
- BConsistent high quality surface finish
- Cconsistent mirror-like finish
- Dconsistent burned finish from the sparks let off by the wire
5Wire EDM is primarily used for
- AMachining soft metals
- BMachining Aluminum Specifically
- CMachining hardened metals
- DWire cutting hardened meals
6What determines the surface finish and machining speed?
- AThe frequency of the spark
- BThe speed
- CThe On time
- DThe on and off time
- EThe size of the spark
- FThe quality of the dielectric fluid
- Gsurface finish of the electrode
7The flow rate of the dielectric fluid does not affect the surface finishand machining speed
- ATrue
- BFalse
8Tungsten carbide cant be machined using the EDM process
- ATrue
- BFalse
9Aluminum can be machined using the EDM process
- ATrue
- BFalse
10Electrodes Wear.
- ATrue
- BFalse
11What range of power output do EDM machines have?
- A20 amps and up
- B15 volts and up
- C15 amps max.
- D15 amps and up
12We normally do not use more than 50 amps per square inch of cutting area.
- ATrue
- BFalse
13Wire machines typically use which direction axis'?
- AX Y Z T
- BX Y U Z
- CY U Z I
- DX Y U V
14What kind of alloy is the wire of a wire EDM machine use?
- ASteel Alloy
- BAluminium Alloy
- CBrass Alloy
- DCopper Alloy
15While Wire EDM machines normally use de-ionized water, what dielectric medium is used in a plunge style EDM machine?
- AVarious Synthetic Oils
- BWD-40
- C5w-20
- DFossil Fuel
16The best flushing is obtained when a ____ volume of dielectric medium is used at _____ pressure
- ALarge, High
- BSmall, Medium
- CLarge, Low
- DLarge, Max
17On and Off time is the ratio between the duration of the spark and the duration of no spark
- ATrue
- BFalse
18By reducing the off time to half (A ratio of 1:0.5) what is likely the result?
- AThe cut will have an increase in burn marks due to the increase in sparks
- BThe cut will increase in efficiency allowing faster cut times
Information
- Description
- Quiz on EDM, created by second_second101 on 21/02/2015.
- Author
- second_second101
- Language
- English
- Views
- 1
- Rating
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