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公开(公告)号：US20220097454A1
公开(公告)日：2022-03-31
申请号：US17425590
申请日：2020-02-18
申请人： NV BEKAERT SA
发明人： Aijun ZHANG , Haidong XI , Wei ZHOU
摘要： A steel cord with a construction of m+n having a first group of core filaments having a number of m and a second group of sheath filaments having a number of n, the second group and the first group are twisted around each other with the same twist pitch and same twist direction, wherein the core filaments are not twisted with each other, the core filaments are parallel or have a twist pitch being more than 300 mm, and the sheath filaments have a twist pitch being less than or equal to 30mm, the core filaments have an average tensile strength Tc in MPa when being un-ravelled from said steel cord, the sheath filaments have an average tensile strength Ts in MPa when being un-ravelled from said steel cord, Tc and Ts satisfy: 5
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公开(公告)号：US20240075772A1
公开(公告)日：2024-03-07
申请号：US18268501
申请日：2021-11-30
申请人： NV Bekaert SA
发明人： Aijun ZHANG
CPC分类号： B60C9/2006 , D07B1/0633 , B60C2009/2077 , B60C2009/2096 , D07B2205/3025 , D07B2501/2046
摘要： The invention is relating to a steel cord for rubber reinforcement. The steel cord has a construction comprising an outer layer and an inner strand surrounded by and adjacent to the outer layer, the inner strand comprises at least one steel filament with a number of N1 and an average diameter of d1 expressed in mm, the outer layer comprises steel filaments with a number of N2 and an average diameter of d2 expressed in mm, the inner strand has a torque T1 and the outer layer has a torque T2, the relation between T1 and T2 are defined. By doing this, the tip rise problem of the rubber ply reinforced by steel cords is reduced.
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公开(公告)号：US20160368321A1
公开(公告)日：2016-12-22
申请号：US14901952
申请日：2014-05-13
申请人： NV BEKAERT SA
发明人： Aijun ZHANG
CPC分类号： B60C9/0007 , B21F1/023 , B21F7/00 , B60C9/0064 , B60C9/1821 , B60C2009/0014 , B60C2009/2074 , B60C2009/2096 , D07B1/0606 , D07B2207/203 , D07B2207/205 , D07B2207/4072 , D07B2401/406 , D07B2501/2046
摘要： A straight steel monofilament (10, 42) for the reinforcement of belt ply (40) of a pneumatic tyre wherein the straightness is determined by the arc-height of the straight steel monofilament (10, 42). The steel monofilament (10, 42) is plastically deformed by a twisting action along the axis of the steel monofilament (10) on a double-twist apparatus (2). The plastic twist deformation eliminates the surface stress difference on the steel monofilament (10, 42) and provides a straight steel monofilament (10, 42) having an arc-height of less than 30 mm By these means a simple solution is provided to manufacture a straight steel monofilament (10, 42) suitable for tire reinforcement with high speed for mass production by using a known apparatus (2).
摘要翻译： 一种用于增强充气轮胎的带束层（40）的直钢单丝（10,42），其中直线度由直钢单丝（10,42）的弧高决定。 钢单丝（10,42）在双捻装置（2）上沿着钢单丝（10）的轴线的扭转作用而塑性变形。 塑性扭曲变形消除了钢单丝（10,42）上的表面应力差异，并且提供了具有小于30mm的弧高的直钢单丝（10,42）。通过这些方式，提供了简单的解决方案来制造 通过使用已知的装置（2），适用于大批量生产的高速轮胎加固的直钢单丝（10,42）。
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公开(公告)号：US20240360621A1
公开(公告)日：2024-10-31
申请号：US18571858
申请日：2022-06-20
申请人： NV BEKAERT SA
发明人： Aijun ZHANG , Haijun MA
CPC分类号： D07B1/062 , B60C9/0007 , B60C2009/0085 , B60C2009/0092 , D07B2201/1044 , D07B2201/2007 , D07B2201/2009 , D07B2205/3025 , D07B2501/2046
摘要： The invention provides a steel cord, the steel cord comprises two or more steel filaments, at least one of the steel filaments has a twist pitch of 6 mm to 40 mm, each of the steel filaments has a tip rise of less than 5 mm with a gauge length of 200 mm after being unravelled out of the steel cord. The invention steel cord has an improved straightness with reduced steel filament fracture risk.
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公开(公告)号：US20230392319A1
公开(公告)日：2023-12-07
申请号：US18268719
申请日：2021-11-30
申请人： NV Bekaert SA
发明人： Aijun ZHANG , Haijun MA , Yaodong LI
IPC分类号： D07B1/06
CPC分类号： D07B1/0606 , D07B2201/1044 , D07B2201/2022 , D07B2201/2067 , D07B2205/3025 , D07B2201/1028
摘要： The invention provides a steel cord with a construction of n×1, n is the number of the steel filaments of the steel cord, the steel cord has an elongation at 2.5N-50N of less than 1.2% and a twist pitch of greater than 16 mm, each of the steel filaments has a form of helical wave with a wave length L expressed in mm and a wave height H expressed in mm when being unravelled from said steel cord, L is greater than 16 mm, each of the steel filaments has a space volume Vs satisfying that, Vs=L×H2×π/4, and Vs>20 mm3. The invention steel cord is beneficial for the stress distribution.
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公开(公告)号：US20180297408A1
公开(公告)日：2018-10-18
申请号：US15950483
申请日：2018-04-11
申请人： NV BEKAERT SA
发明人： Aijun ZHANG
摘要： A method for manufacturing a straight steel monofilament for the reinforcement of belt ply of a pneumatic tyre, where the arc-height of the straight steel monofilament is less than 30 mm. The steel monofilament is plastically deformed by a twisting along the axis of the steel monofilament on a double-twist apparatus. The plastic twist deformation eliminates the surface stress difference on the steel monofilament and provides a straight steel monofilament for belt ply reinforcement. This provides a simple solution with existing apparatus to manufacture straight steel monofilament suitable for tire reinforcement with high speed for mass production.
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