METHOD AND APPARATUS FOR FORMING CORROSION-PREVENTING ELECTRODEPOSITION COATING FILM OF MARINE STEEL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a method for forming a corrosion-preventing electrodeposition coating film of a marine steel structure, which can surely form the corrosion-preventing electrodeposition coating film having uniform thickness on the surface of the marine steel structure, and to provide an apparatus therefor.;SOLUTION: This film-forming apparatus includes: a reference electrode 6 that measures a potential of the marine steel structure 1 side when an electric current is passed to the marine steel structure by a direct-current power source 4; and also a control device 7 which outputs a control signal 4a for holding the direct-current value when the potential of the marine steel structure 1 side, which has been measured with the reference electrode 6, is within a preset reference electrodeposition potential range, for decreasing the direct-current value when the potential 6a of the marine steel structure 1 side, which has been measured with the reference electrode 6, is in the preset reference electrodeposition potential range or lower, and on the other hand, for increasing the direct-current value when the potential 6a of the marine steel structure 1 side, which has been measured with the reference electrode 6, is in the preset reference electrodeposition potential range or higher, to the direct-current power source 4.;COPYRIGHT: (C)2011,JPO&INPIT