EP 0045017 B1 19851016 - PROCESS FOR SURFACE TREATMENT OF STAINLESS STEEL SHEET
Title (en)
PROCESS FOR SURFACE TREATMENT OF STAINLESS STEEL SHEET
Publication
Application
Priority
- JP 8595281 A 19810604
- JP 10155580 A 19800724
- JP 10155680 A 19800724
- JP 11586580 A 19800825
Abstract (en)
[origin: EP0045017A1] A process for surface treatment of stainless steel sheets for excellent corrosion resistance and gloss is provided according to which a BA film or a passive film is formed on the stainless steel sheet; the sheet is dipped in a treatment solution containing 0.1 to 70% by weight of phosphoric acid, 0.1 to 10.0% by weight of a molybdate, chromic acid or a mixture thereof, and 0.1 to 2.0% by weight of magnesium oxide, sodium silicate or a mixture thereof; and cathodic treatment is carried out under the conditions of 1 to 600 A.sec/dm<2> integrated electric current density and 0 to 90 DEG C solution temperature.
IPC 1-7
IPC 8 full level
C25D 9/10 (2006.01)
CPC (source: EP)
C25D 9/10 (2013.01)
Citation (examination)
JP S5330434 A 19780322 - TOMONAGA TOYOHITO
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0045017 A1 19820203; EP 0045017 B1 19851016; DE 3172671 D1 19851121
DOCDB simple family (application)
EP 81105614 A 19810717; DE 3172671 T 19810717