US 11,993,894 B2
Steel wire rope, coated steel wire rope and belt comprising steel wire rope
Eline De Roose, Torhout (BE); and Andreas Klust, Heverlee (BE)
Assigned to BEKAERT ADVANCED CORDS AALTER NV, Aalter (BE)
Appl. No. 17/286,593
Filed by BEKAERT ADVANCED CORDS AALTER NV, Aalter (BE)
PCT Filed Oct. 22, 2019, PCT No. PCT/EP2019/078698
§ 371(c)(1), (2) Date Apr. 19, 2021,
PCT Pub. No. WO2020/083893, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 18201936 (EP), filed on Oct. 23, 2018.
Prior Publication US 2021/0380371 A1, Dec. 9, 2021
Int. Cl. D07B 1/06 (2006.01); B66B 7/06 (2006.01); D07B 1/00 (2006.01); D07B 1/16 (2006.01); D07B 1/22 (2006.01)
CPC D07B 1/0686 (2013.01) [B66B 7/06 (2013.01); B66B 7/062 (2013.01); D07B 1/162 (2013.01); D07B 1/22 (2013.01); D07B 1/24 (2021.01); D07B 2201/1036 (2013.01); D07B 2201/2061 (2013.01); D07B 2201/2066 (2013.01); D07B 2201/2087 (2013.01); D07B 2205/3053 (2013.01); D07B 2205/3057 (2013.01); D07B 2501/2007 (2013.01); D07B 2501/2015 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A steel wire rope for use in lifting applications, said steel wire rope comprising a core and multiple strands twisted around said core, said core and each one of said strands comprising an inner filament and outer steel filaments twisted together, said outer steel filaments being situated radially outward of said core and said strands, the steel of said steel filaments being a plain carbon steel that has been subjected to drawing,
wherein the outer steel filaments of said core have an average Vickers hardness that is at least 50 HV lower than an average Vickers hardness of the outer steel filaments of said strands,
wherein said multiple strands comprise five to eight intermediate strands and six to twelve outer strands, said intermediate strands being twisted around said core, and said outer strands being twisted on said intermediate strands,
wherein the outer filaments of said outer strands have a Vickers hardness number that is 40 HV or more higher than a Vickers hardness number of said outer filaments of said intermediate strands,
wherein each Vickers hardness making up the average Vickers hardness of the outer steel filaments of said core and the average Vickers hardness of the outer steel filaments of said strands is measured with an indentation force of 500 gramforce for 10 seconds,
wherein the average Vickers hardness of the outer steel filaments of said core and the average Vickers hardness of the outer steel filaments of said strands are taken over ten measurement points in a perpendicular cross section of said steel filaments, and
wherein each Vickers hardness making up the average Vickers hardness of the outer steel filaments of said core and the average Vickers hardness of the outer steel filaments of said strands is measured in accordance with ISO 6507-1: 2018.