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阳极氧化处理的设备一般采用铅阴极,但美国一些工厂,对铝零件进行阳极氧化处理的新设备却改用6061-T651铝合金制造的阴极。通常,铅阴极系统会使电解槽电压降低1～2V。对于10000A整流装置,采用铅阴极就要增加能耗10～20千瓦而且电解液需要激烈的冷却。由于铝合金比铅有较高的导电率,所以采用铝合金阴极要优于采用铅阴极。这些工厂改用了铝合金阴极后,节约了电能,使电解液的冷却缓和些,结果降低了成本。此外,铝合金阴极在电解液(硫酸)中的溶解速度也很低。据报导,两班工作制的阳极氧化处理的操作,铝合金阴极的
Anodic oxidation of the device is generally used lead cathode, but some factories in the United States, the new equipment for anodized aluminum parts have been replaced with 6061-T651 aluminum cathode. Lead cathodes typically reduce the cell voltage by 1 to 2V. For the 10000A rectifier, the use of lead cathode will increase the energy consumption of 10 to 20 kilowatts and the electrolyte requires intense cooling. Due to the higher electrical conductivity of aluminum than lead, aluminum cathodes are better than lead cathodes. The conversion of these plants to aluminum cathodes saves electricity and reduces the cooling of the electrolyte, resulting in lower costs. In addition, the dissolution rate of the aluminum alloy cathode in the electrolyte (sulfuric acid) is also low. It has been reported that two shifts of working anodizing processes operate on aluminum cathodes