EP 0766751 B1 19990506 - METHOD FOR PICKLING METAL MATERIALS
Title (en)
METHOD FOR PICKLING METAL MATERIALS
Title (de)
VERFAHREN ZUM ÄTZEN VON METALLISCHEN WERKSTOFFEN
Title (fr)
PROCEDE DE DECAPAGE DE MATERIAUX METALLIQUES
Publication
Application
Priority
- FR 9500744 W 19950607
- FR 9407328 A 19940615
Abstract (en)
[origin: WO9534695A1] Method in which the pickling solution is sprayed onto the metal part in a confined atmosphere with an oxygen supply by feeding into the spraying enclosure an oxygen-containing gas, the pickling solution being recycled in a closed pickling solution circuit. The device for pickling metal surfaces comprises a spraying enclosure (1) with a collecting tank (2), means for spraying (6) a pickling solution (S) in said enclosure, means (11) for recirculating said solution between said tank (2) and said spraying means (6) and means (8, 9) for passing an oxygen-containing gas through said enclosure, and optionally means (13) for maintaining the temperature of said solution, and control means. The method of the invention is designed to improve the productivity of lines for pickling stainless or alloy steel components while economising on reagents.
IPC 1-7
IPC 8 full level
C23G 1/08 (2006.01); C23G 1/10 (2006.01); C23G 1/12 (2006.01); C23G 1/36 (2006.01); C23G 3/02 (2006.01)
CPC (source: EP KR US)
C23G 1/106 (2013.01 - EP US); C23G 1/36 (2013.01 - EP KR US); C23G 3/02 (2013.01 - KR); C23G 3/023 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
WO 9534695 A1 19951221; AT E179763 T1 19990515; CA 2190779 A1 19951221; CA 2190779 C 20040803; DE 69509527 D1 19990610; DE 69509527 T2 19990902; EP 0766751 A1 19970409; EP 0766751 B1 19990506; ES 2132680 T3 19990816; FR 2721328 A1 19951222; FR 2721328 B1 19960906; JP 3735691 B2 20060118; JP H10503805 A 19980407; KR 100361114 B1 20031022; KR 100427795 B1 20040428; KR 20030097597 A 20031231; KR 970703449 A 19970703; US 6033485 A 20000307
DOCDB simple family (application)
FR 9500744 W 19950607; AT 95922577 T 19950607; CA 2190779 A 19950607; DE 69509527 T 19950607; EP 95922577 A 19950607; ES 95922577 T 19950607; FR 9407328 A 19940615; JP 50171596 A 19950607; KR 19960706746 A 19961128; KR 20027007450 A 20020611; US 72763097 A 19970107