MET 171-3 Workshop Technology: Heat Treatment
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Questions and Answers

What is the primary purpose of heat treatment?

  • To change the appearance of metals
  • To reduce the strength of metals
  • To change the properties and performances of metals (correct)
  • To increase the cost of metals

    • Which heat treatment method improves the machinability of the work piece?

  • Tempering
  • Annealing
  • Normalizing (correct)
  • Quenching

    • What is the result of rapid cooling in quenching?

  • Softening of the material
  • Brittleness of the material
  • Hardening of the material (correct)
  • Melting of the material

    • What is the primary function of annealing?

    <p>To relieve internal stresses induced inside the work piece</p> Signup and view all the answers

    Which of the following is not a type of quenching medium?

    <p>Copper</p> Signup and view all the answers

    What is the result of normalizing on the grain structure of a material?

    <p>It makes the grain structure homogeneous and fine</p> Signup and view all the answers

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