PROCESS FOR MANUFACTURING A STRENGTHENED TIMEPIECE COMPONENT AND CORRESPONDING TIMEPIECE COMPONENT AND TIMEPIECE
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United States of America Patent
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Issued Date -
Oct 29, 2015
app pub date -
Apr 24, 2015
filing date -
Apr 25, 2014
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Abstract
The manufacturing process produces a part (10), from a micromachinable material, the part (10) forming a blank of the timepiece component and comprising at least one surface having an initial roughness. It comprises a step of mechanical strengthening treatment of the part in an etching fluid intended to decrease the roughness of said surface. For example, a substrate of said micromachinable material is provided; the substrate is at least partially covered with a protective coating containing at least one aperture; the substrate is etched through the aperture in the protective coating and an etched surface is thus obtained; the mechanical strengthening treatment is applied to said etched surface through the aperture in the protective coating; and then the protective coating is removed. The etching fluid may be a plasma or a liquid chemical etchant.
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