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Discussion :: Workshop Technology

  1. The cold chisels are made from

  2. A.

     Cast iron

    B.

     Mild steel

    C.

     High speed steel

    D.

     Cast tool steel

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    Workspace

    Answer : Option D

    Explanation :

    Cold chisels are made from carbon tool-steel, which is usually octagonal in cross-section.
    Tool-steel is used as it can be hardened to form a hard and tough cutting edge.
    To make a cold chisel heat the end of the bar of tool steel until it is bright red and hammer to the desired shape.


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