METHOD FOR PRODUCING CONVERSION-TREATED ALLOY MATERIAL AND DEVICE FOR REGENERATING CONVERSION TREATMENT SOLUTION USED IN METHOD FOR PRODUCING CONVERSION-TREATED ALLOY MATERIAL

摘要

Provided is a method for producing a conversion-treated alloy material in which a reduction in conversion treatability is suppressed, even after repeated conversion treatment. This method for producing a conversion-treated alloy material comprises a conversion treatment step and a treatment solution regeneration step. In the conversion treatment step, an alloy material (6) is converted by being immersed in an oxalic acid treatment solution (4) containing oxalic acid ions and fluorine ions. In the treatment solution regeneration step, the oxalic acid treatment solution (4) during conversion treatment and/or the oxalic acid treatment solution (4) after conversion treatment is irradiated with light.