EP 2245213 A1 20101103 - PASSIVATING MEANS, SURFACE TREATMENT MEANS, SURFACE TREATMENT SPRAY MEANS AND METHOD FOR TREATING METALLIC SURFACES OF WORK PIECES OR CAST MOLDS
Title (en)
PASSIVATING MEANS, SURFACE TREATMENT MEANS, SURFACE TREATMENT SPRAY MEANS AND METHOD FOR TREATING METALLIC SURFACES OF WORK PIECES OR CAST MOLDS
Title (de)
PASSIVIERMITTEL, OBERFLÄCHENBEHANDLUNGSMITTEL, OBERFLÄCHENBEHANDLUNGSSPRÜHMITTEL SOWIE VERFAHREN ZUM BEHANDELN VON METALLISCHEN OBERFLÄCHEN VON WERKSTÜCKEN ODER GUSSFORMEN
Title (fr)
AGENTS DE PASSIVATION, AGENTS DE TRAITEMENT DE SURFACES, AGENTS DE PULVÉRISATION POUR TRAITEMENT DE SURFACES, ET PROCÉDÉ DE TRAITEMENT DE SURFACES MÉTALLIQUES DE PIÈCES OU DE MOULES DE COULÉE
Publication
Application
Priority
- EP 2009050846 W 20090126
- DE 102008006147 A 20080126
Abstract (en)
[origin: WO2009092817A1] Passivating through phosphating is a known process. Previously, it has been common to perform various cleaning steps during surface treatment of cast molds or work pieces. According to the invention, it is proposed to add to the passivating means, which is composed of an aqueous phosphate solution with metal ions, an additional gelatin. Also, surface treatment means and surface treatment spray means are proposed which comprise such a passivating means as well as non-ionic surfactants, lactic acid and a citric acid monohydrate, and optionally a thickener. This allows preceding cleaning steps to be foregone. Also a corresponding method is proposed in which the surface treatment means are used. The proposed means and method reduce the energy consumption and facilitate an improved effect with regard to adhesive strength, adhesion promotion and thermal shock resistance compared to known means.
IPC 8 full level
C23C 22/74 (2006.01); B22C 3/00 (2006.01); C23C 22/08 (2006.01)
CPC (source: EP US)
B22C 3/00 (2013.01 - EP US); C23C 22/08 (2013.01 - EP US); C23C 22/74 (2013.01 - EP US)
Citation (search report)
See references of WO 2009092817A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2009092817 A1 20090730; CN 101970722 A 20110209; CN 101970722 B 20121205; DE 102008006147 A1 20090910; EP 2245213 A1 20101103; EP 2245213 B1 20160120; US 2010297344 A1 20101125; US 8512484 B2 20130820
DOCDB simple family (application)
EP 2009050846 W 20090126; CN 200980103112 A 20090126; DE 102008006147 A 20080126; EP 09704705 A 20090126; US 86423709 A 20090126