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公开(公告)号：US20240068159A1
公开(公告)日：2024-02-29
申请号：US17766458
申请日：2021-05-20
发明人： Xiang LIU , Aiping WANG , Weiming MA , Nianpeng ZHAO , Xianghui LIU , Zengguang KE , Hengxiang CAO
CPC分类号： D07B1/0633 , D07B1/0666 , D07B1/162 , D07B2201/1036 , D07B2201/1052 , D07B2201/2006 , D07B2201/2037 , D07B2201/2051 , D07B2501/2046
摘要： A compact steel cord is provided. The cord includes a core-filament I steel wire with a diameter of d0, and four middle-layer M steel wires with a diameter of d1 and eight outer-layer O steel wires with a diameter of d2 that are twisted around the core-filament I steel wire in the same lay direction and the same lay length. Gaps L are reserved between the outer-layer O steel wires, an average width of the gaps L is not smaller than 0.02 mm, and the total size of the gaps L is larger than d0 and smaller than d1. The steel cord of a stable structure can be obtained by controlling the proportion of the sizes of all layers of monofilaments, the rubber coating performance of a tire cord can also be improved, the corrosion resistance, fatigue resistance, impact resistance and adhesion retention of a tire are improved.
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公开(公告)号：US20240044075A1
公开(公告)日：2024-02-08
申请号：US17760665
申请日：2021-04-30
发明人： Xiang LIU , Aiping WANG , Nianpeng ZHAO , Weiming MA , Xianghui LIU , Chundong PAN , Cunjun ZHAO
CPC分类号： D07B1/062 , B60C9/0007 , D07B2201/2066 , D07B2201/2009 , D07B2201/102 , D07B2201/104 , D07B2205/3025 , D07B2501/2046 , D07B2201/2006 , D07B2401/2095
摘要： A steel cord and a manufacturing process are disclosed. The steel cord includes a steel core wire located in the center and having a diameter of d; and M sheath-layer steel wires arranged around the steel core wire in the center, tangent to the steel core wire, and having a diameter of d1, at least two gaps L existing between the M sheath-layer steel wires, where M is 4; d, d1, and L satisfy the following relationship: 0.420
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