Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Cutting

  • question_answer        A machinist desires to turn a round steel stock of outside diameter 100 mm at 1000 rpm. The material has tensile strength of 75 kg/mm. The depth of cut chosen is 3 mm at a feed rate of 0.3 mm/rev. Which one of the following tool materials will be suitable for machining the component under the specified cutting conditions?                         

    A) Sintered carbides

    B) Ceramic                                 

    C) HSS                             

    D) Diansond

    Correct Answer: A


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