Examveda

The process which improves the machinability of steels, but lowers the hardness and tensile strength is

A. Normalising

B. Full annealing

C. Process annealing

D. Spheroidising

Answer: Option D


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Comments (1)

  1. Sarveshwer Chandra
    Sarveshwer Chandra:
    6 years ago

    Spherodizing is heat treatment process in which the steel is heated below eutectoid temperature and cooled, with the formation of spherical lumps of cementite, in a ferrite matrix.

    Spherodizing improves machinability and ductility.

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