EP 0543685 B1 19960522 - Method and apparatus for etching edges of a hot rolled plate
Title (en)
Method and apparatus for etching edges of a hot rolled plate
Title (de)
Verfahren und Vorrichtung zum Beizen der Kanten eines warmgewalzten Bleches
Title (fr)
Procédé et dispositif de décapage des rives d'une tÔle laminee à chaud
Publication
Application
Priority
FR 9112324 A 19911007
Abstract (en)
[origin: US5441062A] The device comprises an ultrasonic wave emitter (4) whose lower end portion (5) is immersed in the reactive solution (2) in which a sheet (3) to be pickled is immersed, and this end portion is provided with two emitting plates (6,7) respectively positioned on each side of an edge portion of the sheet (3) with their planar emitting surfaces parallel to the sheet and contained in two antinodal planes. Consequently, the two plates (6,7) vibrate in phase opposition and, if the vibratory amplitude is sufficiently large, these vibrations create a cavitation in the liquid in the space between the surfaces (3a,3b) of the edge portion and the plates (6,7) which considerably accelerates the rate of removal of scale from the edge portion.
IPC 1-7
IPC 8 full level
C23G 1/08 (2006.01); B08B 3/12 (2006.01); C23G 3/02 (2006.01); G10K 13/00 (2006.01)
CPC (source: EP KR US)
B08B 3/12 (2013.01 - EP US); C23G 1/02 (2013.01 - KR); C23G 1/08 (2013.01 - KR); C23G 3/02 (2013.01 - EP KR US); G10K 13/00 (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)
US 5441062 A 19950815; AT E138424 T1 19960615; AU 2603292 A 19930408; AU 653433 B2 19940929; CA 2080070 A1 19930408; CA 2080070 C 20020507; DE 69210960 D1 19960627; DE 69210960 T2 19961121; EP 0543685 A1 19930526; EP 0543685 B1 19960522; ES 2087483 T3 19960716; FR 2682126 A1 19930409; FR 2682126 B1 19941223; JP H05239674 A 19930917; KR 100250402 B1 20000401; KR 930008192 A 19930521; ZA 927675 B 19940407
DOCDB simple family (application)
US 17879494 A 19940107; AT 92402641 T 19920925; AU 2603292 A 19920930; CA 2080070 A 19921007; DE 69210960 T 19920925; EP 92402641 A 19920925; ES 92402641 T 19920925; FR 9112324 A 19911007; JP 29200892 A 19921006; KR 920018026 A 19921001; ZA 927675 A 19921006