| 摘要 |
PROBLEM TO BE SOLVED: To provide a process-saving corrosion protection method for weather resistant steel on which rust remains, by which an antirust property and weather resistance are maintained for a long time and any coloring can be performed arbitrarily. SOLUTION: An anticorrosive paint containing at least one kind of particle selected from a group consisting of aluminum, zinc, and their alloy, is coated and dried on the surface of weather resistant steel, on which only rust after removing loose rust remains, so that it has a dry film thickness of 30-80μm. Subsequently, a colored topcoating material, which contains a non-polluting an antirust pigment and forms a coating film having a gloss retention of 80% or more after 300 hour-irradiation by a sunshine weathermeter for an accelerated weathering test, is coated and dried so that it has a dry film thickness of 20-40μm.
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