| 摘要 |
Process for stainless steel pickling consisting in placing the material to be treated in a bath kept at a temperature ranging from 30 DEG C. to 70 DEG C. having the following initial composition: a) H2SO4 150 g/l at least b) Fe3+ 15 g/l " "c) HF 40 g/l " "d) H2O2 (added with known stabilizers) 1-20 g/l e) emulsifiers, wetting agents, polishing agents, acid attack inhibitors; in the bath being fed continuously: an air flow equal at least to 3 m3/h per m3 bath min. and a stabilized H2O2 quantity adjusted to the bath redox potential to be kept at >/=250 mV.
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