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  • De formation process

    venkatking.v

    Member

    Updated: Oct 26, 2024
    Views: 1.0K
    What is different between coining, embossing and knurling..?
    All are making impression on the work piece.I don't know the exact different between among them..can u tell to me..?
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  • zaveri

    Member • Jul 5, 2012

    Knurling is a process of making an array of diamond-shaped indents on a smooth surface, to improve gripping. on cylindrical surfaces this can be done using a lathe machine fixed with a knurling tool.

    embossing is a process of creating raisied features on a smooth surfaces, such as in coins.

    but coining is a mettalurgical process. it is a process of hardening the material by applying high stress and thus reducing the grain size. the finer the grains, the more stronger a material is.
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  • Praveenan nt

    Member • Jul 9, 2012

    Knurling is a process of making an array of diamond-shaped indents on a smooth surface, to improve gripping. on cylindrical surfaces this can be done using a lathe machine fixed with a knurling tool.
    Emobossing has same design on the both side of the sheet metal.
    This process can be made by means of matched male and female roller <a href="https://en.wikipedia.org/wiki/Die_%28manufacturing%29" target="_blank" rel="nofollow noopener noreferrer">Die %28Manufacturing%29</a>, or by passing sheet or a strip of metal between rolls of the desired pattern.
    Coining operation produces different shape or design on both side of the sheet metal.
    Example : coin where both side have different design.
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