Fundamentals of Metal Forming Quiz
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Questions and Answers

What is the main objective of metal forming?

  • To increase the yield strength of metal workpieces
  • To reduce the ductility of metal workpieces
  • To produce chips from metal workpieces
  • To change the shape of metal workpieces using stresses beyond yield strength (correct)
  • How is plastic deformation different from elastic deformation?

  • Elastic deformation is temperature dependent, while plastic deformation is not
  • Plastic deformation results in a permanent change in shape, while elastic deformation does not (correct)
  • Plastic deformation always leads to fracture, while elastic deformation does not
  • Elastic deformation requires higher stress than plastic deformation
  • What must a metal possess for successful forming operation?

  • High yield strength and low ductility
  • Low yield strength and low ductility
  • High yield strength and high brittleness
  • Low yield strength and high ductility (correct)
  • What distinguishes shaping from forming?

    <p>Forming changes the shape of an existing solid body, while shaping usually involves molding or casting</p> Signup and view all the answers

    What is the ability to change the shape of metal in a solid state without deterioration of metal properties called?

    <p>&quot;Plastic Deformation of Metal (PD)&quot;</p> Signup and view all the answers

    Study Notes

    Metal Forming

    • The main objective of metal forming is to give a desired shape to a metal without changing its mass or composition.

    Deformation Types

    • Plastic deformation: permanent change in shape and size of a metal under stress, does not return to original shape after removal of stress.
    • Elastic deformation: temporary change in shape and size of a metal under stress, returns to original shape after removal of stress.

    Successful Forming Operation

    • A metal must possess ductility, malleability, and sufficient strength for a successful forming operation.

    Shaping vs. Forming

    • Shaping: refers to the process of generating a specific shape or profile on a metal surface.
    • Forming: refers to the process of changing the shape or size of a metal without breaking or cracking it.

    Metal Properties

    • The ability to change the shape of metal in a solid state without deterioration of metal properties is called formability.

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    Description

    Test your knowledge on the fundamentals of metal forming, including the process, requirements for successful forming operations, and more.

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