| 摘要 |
A method and system for anodizing and particularly for hard anodizing of aluminum and aluminum alloy articles in which a wide range of operating voltages can be employed without danger to personnel and without burning of the articles. For continuous (dynamic) processing, a plurality of electrolyte-containing tanks are employed with an associated cooling system for maintaining the electrolyte at a low operating temperature. Each tank, cathode, electrolyte and cooling apparatus are electrically insulated from ground, while each cathode, which can be the tank itself, is connected to a predetermined negative potential of a power source which source comprises one or more separate power supplies. A conductive conveyor system is provided to carry articles through the several tanks and is connected to ground to which is also connected a positive terminal or terminals of the power source. For batch (static) anodizing, a single electrolyte-containing tank is employed with an associated cooling system, the tank, cathode, electrolyte and cooling system being isolated from electrical ground, with the articles to be anodized being grounded. A negative terminal of a power supply is connected to the cathode, which can be the tank itself, while a positive terminal of the power supply is connected to ground.
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