STEEL SHEET HAVING CHEMICAL CONVERSION COATING, MANUFACTURING METHOD OF CONVERSION-COATED STEEL SHEET, AND TREATMENT AGENT FOR APPLYING CHEMICAL CONVERSION COATING TO STEEL SHEET

摘要

To provide a chromium-free agent for forming a chemical conversion coating on a steel sheet; and to provide a steel sheet having a chromium-free chemical conversion coating, and a manufacturing method thereof.SOLUTION: In a steel sheet having a chemical conversion coating prepared from a component dissolved into water, especially a steel sheet which is a strip-shaped original sheet can be used, and components are selected from a group comprising (i) hexafluorotitanate, (ii) zinc phosphate, (iii) phosphoric acid, (iv) a mixture of some of (i) to (iii), where components (i), (ii) and (iii) do not contain an organic component.SELECTED DRAWING: None