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

  • question_answer Which of the following statements are the salient features of hydrostatic extrusion?
    (1) It is suitable for soft and ductile material
    (2) It is suitable for high-strength super-alloys
    (3) The billet is inserted into the extrusion chamber and pressure is applied by a ram to extrude the billet through the die
    (4) The billet is inserted into the extrusion chamber where it is surrounded by a suitable liquid. The billet is extruded through the die by applying pressure to the liquid.
    Select the correct answer using the code given below:
    Codes:

    A) 1 and 3            

    B) 1 and 4

    C) 2 and 3            

    D) 2 and 4

    Correct Answer: C


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