EP 3392375 B1 20191106 - SLUDGE-FREE ZINC PHOSPHATE COATING FORMING METHOD FOR METALLIC COMPONENTS IN SERIES
Title (en)
SLUDGE-FREE ZINC PHOSPHATE COATING FORMING METHOD FOR METALLIC COMPONENTS IN SERIES
Title (de)
VERFAHREN ZUR SCHLAMMFREIEN SCHICHTBILDENDEN ZINKPHOSPHATIERUNG VON METALLISCHEN BAUTEILEN IN SERIE
Title (fr)
PROCÉDÉ DE FORMATION D'UNE COUCHE DE PHOSPHATATE DE ZINC SANS FORMATION DE BOUE POUR DES COMPOSANTS MÉTALLIQUES EN SÉRIE
Publication
Application
Priority
EP 17167467 A 20170421
Abstract (en)
[origin: CA3059807A1] The invention relates to a method for zinc phosphating components so as to form layers, said components comprising surfaces made of steel with a high tolerance against aluminum dissolved in the zinc phosphating bath, wherein the precipitation of poorly soluble aluminum salts can be largely prevented. In the method, a process is used of activating the zinc surfaces by means of dispersions containing particulate hopeite, phosphophyllite, scholzite, and/or hureaulite, wherein the proportion of particulate phosphates in the activation process must be adapted to the quantity of free fluoride and dissolved aluminum in the zinc phosphation.
IPC 8 full level
C23C 22/36 (2006.01); C23C 22/73 (2006.01); C23C 22/78 (2006.01)
CPC (source: EP KR US)
C23C 22/362 (2013.01 - EP KR); C23C 22/365 (2013.01 - US); C23C 22/73 (2013.01 - EP KR); C23C 22/78 (2013.01 - EP KR); C23F 11/188 (2013.01 - US)
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3392375 A1 20181024; EP 3392375 B1 20191106; CA 3059807 A1 20181025; CN 110603345 A 20191220; CN 110603345 B 20220114; ES 2770152 T3 20200630; HU E047403 T2 20200428; JP 2020517827 A 20200618; JP 7223707 B2 20230216; KR 102594023 B1 20231025; KR 20190139995 A 20191218; MX 2019011292 A 20191024; PL 3392375 T3 20200518; US 11479865 B2 20221025; US 2020032402 A1 20200130; WO 2018192707 A1 20181025
DOCDB simple family (application)
EP 17167467 A 20170421; CA 3059807 A 20180308; CN 201880026258 A 20180308; EP 2018055695 W 20180308; ES 17167467 T 20170421; HU E17167467 A 20170421; JP 2019556934 A 20180308; KR 20197034289 A 20180308; MX 2019011292 A 20180308; PL 17167467 T 20170421; US 201916593520 A 20191004