CORROSION PREVENTION METHOD FOR ATMOSPHERIC CORROSION RESISTANT STEEL

摘要

PROBLEM TO BE SOLVED: To provide a corrosion prevention method for an atmospheric corrosion resistant steel maintaining anti-corrosive property and atmospheric corrosion resistance for a long duration, capable of being colored with an optional color, and producible by energy-saving process.;SOLUTION: A coating film (A) of a base adjustment agent containing (a) a binder, (b) a conductive material, (c) a corrosive ion immobilizing agent, and (d) a coupling agent is formed on the surface of an atmospheric corrosion resistant steel from which only swelling rust is removed and in which some rust still remains: a rust prevention coating film (B) containing an anti-corrosive agent is further formed thereon: and a coloring topcoat coating film (C) with a gloss retaining ratio of 85% or higher after 300-hour irradiation by a sunshine weather meter in an accelerated weathering test is formed thereon.;COPYRIGHT: (C)2004,JPO