EP 0630426 B1 19951115 - PROCESS FOR MANTAINING A CATHODIC PROTECTION AGAINST CORROSION AND DEVICE FOR CARRYING OUT SAID PROCESS.
Title (en)
PROCESS FOR MANTAINING A CATHODIC PROTECTION AGAINST CORROSION AND DEVICE FOR CARRYING OUT SAID PROCESS.
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ERHALTEN KATHODISCHEN SCHUTZES GEGEN KORROSION.
Title (fr)
PROCEDE ET DISPOSITIF DE MAINTIEN D'UNE PROTECTION CATHODIQUE CONTRE LA CORROSION.
Publication
Application
Priority
- IT 9200105 W 19920812
- IT VR910070 A 19910814
Abstract (en)
[origin: WO9304218A1] The cathodic protection process against corrosion according to the invention features a single electrode (12), the anode, which is connected to the positive pole of an electrical power supply, whose negative pole is connected to the object to be protected, e.g. to a boiler. According to an essential feature of the invention, the intensity of the current necessary for mantaining the process is periodically raised or lowered for a predetermined lapse of time about a predetermined percentage value relative to the steady condition value, and during this phase in which a higher or a lower current is delivered the potential difference between boiler and anode is gauged. This potential difference is compared, by means of a comparator, with a predetermined reference value, and the deviation is used for determining the current intensity during the next steady condition phase.
IPC 1-7
IPC 8 full level
C23F 13/04 (2006.01)
CPC (source: EP)
C23F 13/04 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE
DOCDB simple family (publication)
WO 9304218 A1 19930304; DE 69206157 D1 19951221; DE 69206157 T2 19960718; DK 0630426 T3 19960506; EP 0630426 A1 19941228; EP 0630426 B1 19951115; ES 2082500 T3 19960316; GR 3018985 T3 19960531; IT 1253258 B 19950714; IT VR910070 A0 19910814; IT VR910070 A1 19930214
DOCDB simple family (application)
IT 9200105 W 19920812; DE 69206157 T 19920812; DK 92919515 T 19920812; EP 92919515 A 19920812; ES 92919515 T 19920812; GR 960400386 T 19960214; IT VR910070 A 19910814