To prevent yellowing of the steel sheet after pickling method

2013 
A method of preventing yellowing of the surface of the steel sheet, the steel sheet after continuous annealing and pickling the steel sheet surface after the removal of Si-containing oxide layer, re-pickling, water washing and drying, in this method, by the acid washing and further holding a wet state is preferably used to reduce the concentration of iron ions to the wash water, 20g / L or less is performed during the washing and then pickling the steel sheet surface during washing and then pickling, the pickling is prevented steel sheet surface becomes yellow, thereby stably producing quality and excellent appearance after chemical conversion treatability and excellent corrosion resistance of coated cold rolled steel sheet.
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    0
    References
    0
    Citations
    NaN
    KQI
    []