C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
149/15
C23G 1/08 (2006.01) C23G 1/36 (2006.01)
Patent
CA 1142071
CONTINUOUS TREATMENT OF STEEL SHEET ABSTRACT Steel sheet is subjected to a thermal treatment as a result of which an oxide layer is formed. The sheet is pickled by contact with an organic acid solution (formic acid), containing at least 50 mg/1 of iron, at a pH of 1.5 to 4 and at a temperature above a minimum value Tm given by Tm = 20 + (pH - 1.5)32.
338604
Hancart Jules
Paulus Philippe
Tusset Vittorino
Centre de Recherches Metallurgiques-Centrum Voor Research In de
Marks & Clerk
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