公开(公告)号：US11993894B2

公开(公告)日：2024-05-28

申请号：US17286593

申请日：2019-10-22

Applicant: BEKAERT ADVANCED CORDS AALTER NV

Inventor： Eline De Roose ,  Andreas Klust

IPC: D07B1/06 ,  B66B7/06 ,  D07B1/00 ,  D07B1/16 ,  D07B1/22

CPC classification number: D07B1/0686 ,  B66B7/06 ,  B66B7/062 ,  D07B1/162 ,  D07B1/22 ,  D07B1/24 ,  D07B2201/1036 ,  D07B2201/2061 ,  D07B2201/2066 ,  D07B2201/2087 ,  D07B2205/3053 ,  D07B2205/3057 ,  D07B2501/2007 ,  D07B2501/2015

Abstract: A steel wire rope is presented for use in elevators and lifting applications. The steel wire rope contains a core surrounded by multiple strands. The outer filaments of the core and the outer filaments of the strands are likely to contact one another during use. The outer steel filaments of the core have an average Vickers hardness that is at least 50 Vickers hardness numbers lower than that of the outer filaments of the strands. As the hardness of the outer filaments of the core is substantially lower than that of the outer filaments of the strands, those softer filaments will preferentially abrade away during use. In this way the core is sacrificed while preserving the integrity of the outer filaments of the strands. The use of this ‘sacrificial core’ results in a higher residual breaking load after use.