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18 November, 00:44

Which heat-treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?

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  1. 18 November, 01:41
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    Case-hardening

    Explanation:

    Case-hardening

    It is the process of hardening the surface of the metal object and allowing the metal which is deep inside to remain soft, hence, making a thin hard outer layer on the surface.

    In case of iron which have low carbon content, the case - hardening is done by introducing high carbide or nitride content.

    The process of case - hardening is done, in the final shaping process.
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