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Doctors Medicines MCQs Q&A

  1. USM
  2. ECM
  3. EDM
  4. Anode mechanical machining
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1 Answers

Option 2 : ECM

Explanation:

In ECM, there is no mechanical contact between the workpiece and the cutting tool and hence there is no possibility of tool wear. The material from the workpiece is removed by the chemical action of the electrolyte using Faraday’s law of electrolysis. Workpiece forms electrode (anode) and the cutting tool negative electrode (cathode).

The tool material used in ECM should have following property

  • It should have high electrical conductivity
  • It should be easily machinable and it should have high stiffness
  • Its corrosion resistance should be high.


The advantages of ECM include

  • Complex shapes can be made accurately
  • The surface finish is good due to atomic level dissolution
  • Tool wear practically absent
  • Its material removal rate is highest.
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