WELDED BIMETALLIC EXTERNAL CLOCK ELEMENT Russian patent published in 2016 - IPC G04B37/22 

FIELD: manufacturing technology.

SUBSTANCE: intended for use in production of clock, jewelry and imitation jewelry. Method of making of external clock element (100) consists in the fact that there are metal base (10) made from the first material, which is titanium and/or the first titanium alloy, at least one metal patch (20) made from second material containing the second metal selected from gold, platinum or palladium and/or second alloy containing at least gold, platinum or palladium. Patch (20) has thickness (E) greater than or equal to 0.5 mm. At least one patch (20) is attached to base (10) by welding for production of bimetallic workpiece. Patch (20) and base (10) are heated to temperature higher than the melting point of patch (20) and base (10). Then bimetallic workpiece is subjected to deformation and/or machining to make composed element (100) finished. Said method is used for production of external clock element and clock or wrist watch, including external element.

EFFECT: higher corrosion resistance and preservation of mechanical properties of products are achieved.

30 cl, 23 dwg