Workpiece having glossy coating layer
AssigneeUniversal Trim Supply Co., Ltd.
InventorsCHENG-YUNG LEE, SHUN-FA KANG
Life of this patent
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Abstract
A workpiece has a glossy coating layer disposed thereon. A barrel plating device is electrified with an alternating current, which has a voltage between 1V and 100V, a current density between 0.02 A/dm2 and 50 A/dm2, and a frequency between 1 Hz to 60 KHz. The alternating current is rectified by a low ripple DC rectifier into a direct current whose ripple coefficient is between 0.3% and 26%. Thereby, a surface of the workpiece is electroplated with the glossy coating layer, which contributes to a glossy and even effect on the surface of the workpiece.
Claims6
A workpiece having a glossy coating layer comprising:
- a workpiece;
- and
- a glossy coating layer;
- a barrel plating device being electrified with an alternating current, which has a voltage between 1V and 100V, a current density between 0.02 A/dm2 and 50 A/dm2, and a frequency between 1 Hz to 60 KHz;
- said alternating current being rectified by a low ripple DC rectifier into a direct current whose ripple coefficient is between 0.3% and 26%;
- a surface of said workpiece being electroplated with said glossy coating layer.
A method for electroplating a workpiece with a glossy coating layer comprising steps of:
- A. preparing a barrel plating device;
- said barrel plating device including:
- a base, in which an electroplating trough is formed;
- a barrel unit having a pair of correspondent frames, at least one shaft disposed between said frames, and a barrel body disposed between said frames;
- said barrel body defining a plurality of apertures thereon;
- two sides of said barrel body being provided with a first gear, respectively;
- said first gear meshing with a second gear, and said second gear meshing with a third gear;
- a motor being engaged with said third gear;
- B. placing a plating solution into said electroplating trough;
- C. placing a plurality of workpieces into said barrel body;
- placing a positive electrical conductor that connects to an anode basket into said electroplating trough and soaking said positive electrical conductor in said plating solution;
- protruding a negative electrical conductor into said barrel body via said two sides thereof;
- placing said barrel body into said electroplating trough of said base, whereby said plating solution enters said barrel body via said apertures thereof;
- turning on said motor triggering a rotation of said third gear so that said third gear rotating said second gear, and said second gear further rotating said first gear;
- whereby, said barrel body rolling in said electroplating trough;
- and
- D. said positive electrical conductor and said negative electrical conductor being electrified by an alternating current, which has a voltage between 1V and 100V, a current density between 0.02 A/dm2 and 50 A/dm2, and a frequency between 1 Hz to 60 KHz;
- said alternating current being rectified by a low ripple DC rectifier into a direct current whose ripple coefficient is between 0.3% and 26%;
- said rolling barrel body allowing said workpieces to circularly attach to said negative electrical conductor;
- said plating solution allowing a positive metal ion to be reduced to a metal bright coating layer that is arranged densely on said workpieces in view of redox.
Dependencies are inferred from the claim text.