EP 1888819 B1 20190710 - METHOD FOR PREPARING METALLIC WORKPIECES FOR COLD FORMING
Title (en)
METHOD FOR PREPARING METALLIC WORKPIECES FOR COLD FORMING
Title (de)
VERFAHREN ZUR VORBEREITUNG VON METALLISCHEN WERKSTÜCKEN ZUM KALTUMFORMEN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE PIÈCES MÉTALLIQUES POUR LE FORMAGE À FROID
Publication
Application
Priority
- EP 2006004121 W 20060503
- DE 102005023023 A 20050519
Abstract (en)
[origin: WO2006122651A1] The invention relates to a method for preparing metallic workpieces for cold forming by contacting the metallic surfaces thereof with an aqueous acid phosphating solution so as to embody at least one phosphate coating and then coating the phosphate-coated surfaces with at least one lubricant in order to embody at least one lubricant layer. According to the inventive method, the phosphating solution essentially contains only calcium, magnesium, or/and manganese as cations that are selected among cations of main group 2 and subgroups 1, 2, and 5 to 8 of the periodic table of chemical elements in addition to phosphate. Furthermore, an alkaline earth metal-containing phosphating solution is free from fluoride and complex fluoride while the phosphating process is carried out electrolytically. The invention further relates to a metallic workpiece that is coated accordingly as well as the use of workpieces coated in said manner.
IPC 8 full level
C25D 11/36 (2006.01); C23C 22/17 (2006.01); C23C 22/18 (2006.01); C23C 22/22 (2006.01)
CPC (source: EP US)
C23C 22/17 (2013.01 - EP US); C23C 22/188 (2013.01 - EP US); C23C 22/22 (2013.01 - EP US); C25D 11/36 (2013.01 - EP US); Y10T 428/31678 (2015.04 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005023023 A1 20061123; DE 102005023023 B4 20170209; AU 2006246764 A1 20061123; AU 2006246764 B2 20110908; BR PI0610136 A2 20100601; BR PI0610136 B1 20180206; CA 2608390 A1 20061123; CA 2608390 C 20130108; CN 101189366 A 20080528; CN 101189366 B 20150506; EA 012533 B1 20091030; EA 200702422 A1 20080630; EP 1888819 A1 20080220; EP 1888819 B1 20190710; ES 2749926 T3 20200324; JP 2008540845 A 20081120; MX 2007014320 A 20080211; UA 93509 C2 20110225; US 2008166575 A1 20080710; WO 2006122651 A1 20061123; ZA 200710308 B 20090527
DOCDB simple family (application)
DE 102005023023 A 20050519; AU 2006246764 A 20060503; BR PI0610136 A 20060503; CA 2608390 A 20060503; CN 200680017145 A 20060503; EA 200702422 A 20060503; EP 06742777 A 20060503; EP 2006004121 W 20060503; ES 06742777 T 20060503; JP 2008511586 A 20060503; MX 2007014320 A 20060503; UA A200714348 A 20060503; US 91352906 A 20060503; ZA 200710308 A 20060503