Ferrous Sulfate Pre-plating Solution for Fabrication of Defect-Free Hot-Dip Aluminized Stainless Steel Sheets

摘要

_{A solution of ferrous sulfate (FeSO 4} ) for the manufacture of flawless hot-dip aluminum-plated stainless steel sheets is provided. In the present invention, an iron lead layer can be formed with an adhesion amount of 0.5 to 5 g/m2 on one or both sides without undergoing a separate surface activation and pickling process on the stainless steel plate, and further, the iron lead layer is a stainless steel plate and Since it improves the wettability of molten aluminum, it contains iron (Fe) in a concentration of 10 to 120 g/L, which can effectively manufacture a defect-free hot-dip aluminum-plated stainless steel sheet with excellent plating adhesion without defects such as unplated, and chromium oxide. A surface activator for activating a film, an antioxidant for preventing oxidation of iron ions, an electrodeposition accelerator for improving adhesion to plating, and a residual water (H ₂ O).