US 11,713,398 B2
Corrosion protecting layer system, corrosion protected bearing component and method for protecting a bearing component against corrosion
Thilo von Schleinitz, Schweinfurt (DE)
Assigned to AKTIEBOLAGET SKF, Gothenburg (SE)
Appl. No. 15/124,863
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
PCT Filed Feb. 24, 2015, PCT No. PCT/EP2015/053809
§ 371(c)(1), (2) Date Sep. 9, 2016,
PCT Pub. No. WO2015/135745, PCT Pub. Date Sep. 17, 2015.
Claims priority of application No. 10201404329.8 (DE), filed on Mar. 10, 2014.
Prior Publication US 2017/0022369 A1, Jan. 26, 2017
Int. Cl. C09D 5/10 (2006.01); F16C 33/20 (2006.01); C09D 175/04 (2006.01); C08G 18/30 (2006.01); C08G 18/76 (2006.01); C08K 5/5317 (2006.01); C08K 5/54 (2006.01); C08K 3/11 (2018.01); C08K 3/08 (2006.01); C08K 3/22 (2006.01)
CPC C09D 5/106 (2013.01) [C08G 18/307 (2013.01); C08G 18/76 (2013.01); C09D 175/04 (2013.01); F16C 33/201 (2013.01); F16C 33/203 (2013.01); F16C 33/208 (2013.01); C08G 2150/90 (2013.01); C08K 3/08 (2013.01); C08K 3/11 (2018.01); C08K 3/22 (2013.01); C08K 5/5317 (2013.01); C08K 5/54 (2013.01); C08K 2003/0893 (2013.01); C08K 2003/2268 (2013.01); F16C 2208/02 (2013.01); F16C 2208/12 (2013.01); F16C 2223/30 (2013.01); F16C 2240/48 (2013.01); F16C 2240/60 (2013.01); F16C 2360/31 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for protecting a bearing component against corrosion, comprising:
applying and curing a first varnish based on polyurethane into which a first quantity of zinc particles have been mixed and into which either vinylphosphonic acid or silane has been mixed, to form a base layer on a surface region of the bearing component, applying and curing a second varnish based on polyurethane, to which a second quantity of zinc particles have been added, to form an intermediate layer on the base layer,
applying and curing a third varnish based on polyurethane, to which micaceous iron oxide has been added, to form a top layer on the intermediate layer, and
applying and curing a fourth varnish based on polyurethane to form a sealing layer on the top layer,
wherein, to form the intermediate layer, the second varnish is applied in a plurality of partial layers, and/or to form the top layer, the third varnish is applied in a plurality of partial layers.