Method for controlling pickling solution of stainless steel

Details Method for controlling pickling solution of stainless steel Method for controlling pickling solution of stainless steel

C - Chemistry, Metallurgy

23

G

149/12

C23G 1/08 (2006.01)

Patent

CA 1119080

FMC 1750 ABSTRACT According to the present invention, there is provided a method for controlling the composition of a pickling solu- tion characterized in that in the pickling for stainless steel using a ferric sulfate-hydrofluoric acid bath, the oxidation- reduction potential of the pickling solution is held in a predetermined range by adding hydrogen peroxide and sulfuric acid into the pickling solution.

304951

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