EP 0596273 B1 19980506 - Product for pickling surfaces of chromium-nickel steel or chromium steel and its use
Title (en)
Product for pickling surfaces of chromium-nickel steel or chromium steel and its use
Title (de)
Mittel zum Beizen der Oberfläche von Chromnickelstählen und Chromstählen sowie Verwendung des Mittels
Title (fr)
Produits de décapage de surfaces d'aciers au chromenickel ou d'aciers du chrome et leur utilisation
Publication
Application
Priority
DE 4237021 A 19921102
Abstract (en)
[origin: EP0596273A1] A product for pickling surfaces of chromium-nickel steels and chromium steels contains sulphuric acid, phosphoric acid or mixtures thereof and Fe(III) ions, the product additionally containing fluoboric acid. Using this product, it is possible to pickle surfaces of chromium-nickel steels and chromium steels in such a way that undesired oxide coatings, contaminations and tarnishing colours are removed. In the case of this product, the use of hydrofluoric acid or hydrofluoric acid in addition to nitric acid is unnecessary.
IPC 1-7
IPC 8 full level
CPC (source: EP)
C23G 1/086 (2013.01); C23G 1/088 (2013.01); C25D 1/06 (2013.01)
Citation (examination)
US 3010854 A 19611128 - SATTERFIELD WALTER R
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0596273 A1 19940511; EP 0596273 B1 19980506; AT E165876 T1 19980515; DE 4237021 C1 19940210; DE 59308502 D1 19980610; DK 0596273 T3 19990215; ES 2114991 T3 19980616
DOCDB simple family (application)
EP 93116251 A 19931007; AT 93116251 T 19931007; DE 4237021 A 19921102; DE 59308502 T 19931007; DK 93116251 T 19931007; ES 93116251 T 19931007