| 摘要 |
The present invention relates to a composition of an anti-rust additive for a chrome free galvanized steel sheet which has excellent rest preventative properties and corrosion resistant properties by consisting of a silicate compound, a siliconate compound, and a coupling agent. The composition of the anti-rust additive for a galvanized steel sheet consists of the silicate compound of 1 to 50 parts by weight, the siliconate compound of 2 to 40 parts by weight, and the coupling agent of 1 to 10 parts by weight. |
