EP 1358367 B1 20040915 - CONTINUOUS ELECTROLYTIC PICKLING AND DESCALING OF CARBON STEEL AND STAINLESS STEEL
Title (en)
CONTINUOUS ELECTROLYTIC PICKLING AND DESCALING OF CARBON STEEL AND STAINLESS STEEL
Title (de)
KONTINUIERLICHES ELEKTROLYTISCHES BEIZEN UND ENTZUNDERN VON UNLEGIERTEM STAHL UND NICHTROSTENDEM STAHL
Title (fr)
DECAPAGE ET DECALAMINAGE PAR VOIE ELECTROLYTIQUE CONTINUE DE L'ACIER AU CARBONE ET DE L'ACIER INOXYDABLE
Publication
Application
Priority
- IT 0100637 W 20011218
- IT RM20000674 A 20001218
- IT RM20000675 A 20001218
Abstract (en)
[origin: WO0250344A1] Continuos electrolytic method in a neutral solution for the pickling and the descaling of carbon steels and stainless steels, in the presence of electrolysis current flow indirect effects, said current being AC or DC and having a frequency lower than 3 Hz, characterized in that the anodic treatment times and the cell currents are selected according to the formula: It=c+kI where: I is the current density crossing the cell; t is the anodic treatment time; c is the constant fraction of electric charge density outputted for the direct oxide change anodic reactions; and k is a time constant for the calculation of the fraction of electric charge density, proportional to the current density I (kI), outputted for the indirect anodic reactions linked to Oxygen development and to the consequent acidification at the steel/electrolytic solution interface (Carbon steels) or at the scale/electrolytic solution interface (stainless steels).
IPC 1-7
IPC 8 full level
C25F 1/06 (2006.01)
CPC (source: EP KR)
C25F 1/06 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0250344 A1 20020627; AT E276386 T1 20041015; AU 1744902 A 20020701; CN 1231615 C 20051214; CN 1486373 A 20040331; DE 60105653 D1 20041021; DE 60105653 T2 20050929; EP 1358367 A1 20031105; EP 1358367 B1 20040915; ES 2232564 T3 20050601; KR 20030076589 A 20030926
DOCDB simple family (application)
IT 0100637 W 20011218; AT 01271468 T 20011218; AU 1744902 A 20011218; CN 01822064 A 20011218; DE 60105653 T 20011218; EP 01271468 A 20011218; ES 01271468 T 20011218; KR 20037008160 A 20030618