EP 3119928 B1 20180822 - METHOD FOR DELAMINATION OF CERAMIC HARD MATERIAL LAYERS FROM STEEL AND CEMENTED CARBIDE SUBSTRATES
Title (en)
METHOD FOR DELAMINATION OF CERAMIC HARD MATERIAL LAYERS FROM STEEL AND CEMENTED CARBIDE SUBSTRATES
Title (de)
VERFAHREN ZUM ENTSCHICHTEN VON KERAMISCHEN HARTSTOFFSCHICHTEN VON STAHL- UND HARTMETALL-SUBSTRATEN
Title (fr)
PROCÉDÉ D'ENLÈVEMENT DE COUCHES EN MATÉRIAU CÉRAMIQUE DUR DE SUBSTRATS EN ACIER ET EN MÉTAL DUR
Publication
Application
Priority
EP 2014055376 W 20140318
Abstract (en)
[origin: WO2015139731A1] In order to improve a method for delamination of ceramic hard material layers from steel and cemented carbide substrates having a ceramic hard material layer on part of the surface thereof and to make it amenable to further applications, it is proposed that the workpieces (10) to be laminated – preferably having a portion without a ceramic hard material layer – be introduced into guard elements, preferably protective plugs, which fit the diameter and height and be inserted into a holder (50), the holder along with the workpieces (10) to be laminated be contacted with the plus pole of a power pulse generator, an either acidic or basic electrolytic bath (30) be selected, the contact-connected holder be placed into the selected electrolytic bath (30), at least one electrode (20) be positioned at a predetermined distance from the holder and the latter be contacted with the negative pole of the power pulse generator (40), the delamination is conducted by means of the pulse generator, with endpoint recognition being conducted continuously or checking for delamination being conducted at time intervals.
IPC 8 full level
C25F 5/00 (2006.01); C25F 3/06 (2006.01); C25F 7/00 (2006.01)
CPC (source: EP KR US)
C25F 3/06 (2013.01 - EP US); C25F 5/00 (2013.01 - EP KR US); C25F 7/00 (2013.01 - EP KR 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)
WO 2015139731 A1 20150924; EP 3119928 A1 20170125; EP 3119928 B1 20180822; JP 2017508893 A 20170330; JP 6440814 B2 20181219; KR 20170004970 A 20170111; US 2017204530 A1 20170720; US 9879356 B2 20180130
DOCDB simple family (application)
EP 2014055376 W 20140318; EP 14711234 A 20140318; JP 2017500129 A 20140318; KR 20167028952 A 20140318; US 201415126664 A 20140318