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Trivalent chromium plating solution of the playback device, the playback device trivalent chromium plating system with a, and trivalent method for reproducing chromium plating solution
Trivalent chromium plating solution of the playback device, the playback device trivalent chromium plating system with a, and trivalent method for reproducing chromium plating solution
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机译:回放装置的三价铬电镀液,具有三价铬电镀系统的回放装置以及用于再现铬电镀液的三价方法
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摘要
PROBLEM TO BE SOLVED: To reduce concentration of hexavalent chromium ions generated in trivalent chromium plating liquid.;SOLUTION: A trivalent chromium plating system comprises: a main tank 2 for applying trivalent chromium plating; a sub tank 3 which circulates trivalent chromium plating solution between the main tank 2 and the subtank and supplies the trivalent chromium plating solution to the main tank 2; and a regeneration apparatus 4 in which the trivalent chromium plating solution in the sub tank 3 is circulated. The trivalent chromium plating solution contains trivalent chromium ions and reducing agent, the regeneration apparatus 4 comprises a regeneration tank 5 to which the trivalent chromium plating solution after trivalent chromium plating is supplied, and a cooling tank 6 to which the trivalent chromium plating solution is supplied from the regeneration tank 5. Temperature of the regeneration tank 5 is set higher than trivalent chromium plating temperature, and temperature of the cooling tank 6 is set to the trivalent chromium plating temperature or higher and lower than the temperature of the regeneration tank 5.;COPYRIGHT: (C)2015,JPO&INPIT
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