由Sargent发明的镀铬法沿用至今,这种镀液被称为标准镀铬液,亦称Sargent镀浴。该镀液中必须维持一定的Cr~(+++)离子浓度,以确保电镀层和溶液的优良性能。一般需保持2～3g/1Cr~(+++)离子浓度为最佳。通常采用的Cr~(+++)离子的生成法是电解法,它需要消耗大量的电能,一般6A.h/L电量可产生1g/1Cr~(+++)离子,即使用改良的电解法,也存在多余硫酸根沉淀去除的问题, The chrome plating method invented by Sargent is still in use today. This type of bath is known as a standard chrome bath, also known as the Sargent bath. The plating solution must maintain a certain Cr ~ (+++) ion concentration to ensure the excellent performance of the plating layer and the solution. Generally need to maintain 2 ~ 3g / 1Cr ~ (+++) ion concentration is the best. Commonly used Cr ~ (+++) ion generation method is electrolysis, which requires a lot of power consumption, the general 6A.h / L power can produce 1g / 1Cr ~ (+++) ions, even with improved electrolysis Method, there is also the problem of removal of excess sulfate precipitation,