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Pretreatment solution for producing chromate base coating and method for producing coated chromate coating having excellent surface appearance and corrosion resistance
Pretreatment solution for producing chromate base coating and method for producing coated chromate coating having excellent surface appearance and corrosion resistance
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机译：用于生产铬酸盐底涂层的预处理溶液和生产具有优异表面外观和耐腐蚀性的铬酸盐涂层涂层的方法
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摘要
The present invention relates to a pretreatment solution for producing a chromate base coating and a method for preparing a coated chromate coating using the same, wherein CrO 3 added to the solution is Cr 6+ 0.1-0.5 g / L and Cr 3+ 0.1-0.2 g / L. An electrogalvanized steel sheet was immersed in a pretreatment solution for preparing a chromate base coating composed of 10 g / L, 5-20 g / L sulfuric acid, and 10-25 g / L nitric acid to form a chromate base coating on the surface, and the electro galvanized steel sheet having the base coating formed thereon. Provided is a method of forming a chromate film by roll coating the coated chromate solution.;In the present invention, the surface appearance, adhesion and corrosion resistance were improved together by forming a chromate base coating before treatment with the coated chromate solution.
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机译：本发明涉及一种用于制备铬酸盐底涂层的预处理溶液以及使用该溶液制备铬酸盐涂层的方法，其中添加到该溶液中的CrO 3为Cr 6 + 0.1-0.5 g / L和Cr 3 + 0.1-0.2 g / L。将电镀锌钢板浸入预处理溶液中以制备由10 g / L，5-20 g / L硫酸组成的铬酸盐底涂层然后用10-25g / L的硝酸在表面上形成铬酸盐底涂层，并在其上形成底涂层的电镀锌钢板。提供了通过辊涂涂覆的铬酸盐溶液来形成铬酸盐膜的方法。在本发明中，通过在用涂覆的铬酸盐溶液处理之前形成铬酸盐底涂层，一起改善了表面外观，粘附性和耐腐蚀性。
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