| 摘要 |
Process for sheet titanium pickling followed by passivation. Pickling is carried out in an aqueous solution containing H2SO4, HF and Fe3+ at </=50 DEG C., continuously fed with an air flow, and with a stabilized H2O2 quantity adjusted to the bath redox potential to be kept at -200 to 0 mV. Passivation is carried out in an aqueous bath containing 4 to 10 g/l HF, </=1 g/l Fe3+, and not containing H2SO4, with a redox potential kept at 500-600 mV by continuous feeding of stabilized H2O2.
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