Chromium-free pretreatment for galvanized steel and its coating system

Abstract

The demand for lead and chromium-free technology is one of most important subjects for prevention of the global environment and human health and safety. Cocerning steel window sash and doors, coating method with JIS K 5629 calcium metaplumbate anticorrosive paint onto chromate chemical pretreated galvanized steel surface is generally applied. In this paper, new chromium-free preteatment for the galvanized steel and lead and chromium-free coating systems onto the converted steel surface have been discussed based on experimenatal results.