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1*d1+6+12*d2+7*8*d2 all-steel cord

A technology of steel cords and steel wires, applied in the field of 1×d1+6+12×d2+7×8×d2 steel cords, can solve the problem of small gap between outer strands, high air content in the cords, and steel cords. Insufficient strength and other problems to achieve the effect of improving corrosion resistance and improving service life

Pending Publication Date: 2020-08-28
JIANGSU XINGDA STEEL TYPE CORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a 1×d1+6+12×d2+7×8×d2 steel cord to solve the problem of insufficient strength of the steel cord in the prior art, small gaps between outer strands, and ineffective penetration of rubber Defects of high air content inside the cord due to core strand steel wire

Method used

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  • 1*d1+6+12*d2+7*8*d2 all-steel cord

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Embodiment 1

[0023] In the present embodiment, the diameter d1 of the steel wire of the first layer of steel wire 3 of the core strand steel wire 1 must be at least greater than the steel wire of the second layer of steel wire 4 of the core strand and the diameter of the third layer of steel wire 5 of the core strand. The diameter of the layer steel wire 4 and the diameter of the third layer of steel wire 5 of the core strand are 0.015mm, the second layer of steel wire 4 of the core strand in the core strand steel wire 1, the third layer of steel wire 5 of the core strand and the outer layer of strand steel wire 2 The diameter of each layer of steel wire is 0.20mm. The twist length of the first layer of steel wire 3 of the core strand steel wire 1 is 6.3mm, the twist length of the third layer of steel wire 5 of the core strand is 12.5mm, and the outer layer of the strand steel wire 2 The twist length of the second layer of steel wires of the layer strands is 12.5mm. The core strand steel ...

Embodiment 2

[0028] Embodiment 2: 1, core strand steel wire D1; 2, outer strand strand steel wire D2; 3, core strand first layer steel wire A1; 4, core strand second layer steel wire A2; 5, core strand third layer Steel wire A3; 6. Steel wire a1 of the first layer of outer strands; 7. Steel wire a2 of the second layer of outer strands.

[0029] The diameter d1 of the core strand first layer steel wire 3 in the core strand steel wire 1 in the present embodiment must at least be greater than the diameter d2 of the core strand second layer steel wire 4 and the core strand third layer steel wire 5, the second layer steel wire 4 and The diameter of the third layer of steel wire 5 of the core strand is 0.015mm, and the diameter of each layer of steel wire in the core strand steel wire 1, the second layer of steel wire 4 of the core strand, the third layer of steel wire 5 of the core strand and the outer layer strand steel wire 2 is equal to is 0.20mm. The lay distance of core strand steel wire ...

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Abstract

The invention discloses a 1*d1+6+12*d2+7*8*d2 all-steel cord. The 1*d1+6+12*d2+7*8*d2 all-steel cord comprises a core strand braided wire steel wire and outer-layer strand braided wire steel wires. The outer-layer strand braided wire steel wires are woven and twisted along the core strand braided wire steel wire and are evenly twisted and distributed on the core strand braided wire steel wire. Thecore strand braided wire steel wire is formed by weaving and twisting at least one core strand first-layer steel wire, at least six core strand second-layer steel wires and at least twelve core strand third-layer steel wires from inside to outside. Each outer-layer core strand braided wire steel wire is formed by weaving and twisting at least one outer-layer strand first-layer steel wire and at least six second-layer steel wires. According to the 1*d1+6+12*d2+7*8*d2 all-steel cord, the clearances between the eight outer-layer strand braided wire steel wires are large, rubber can fully permeate into the core-strand steel wire, point contact friction between all the layers of steel wires due to insufficient rubber permeation is avoided, and the problem that the bearing capacity of the all-steel cord fails due to friction is avoided; and the corrosion resistance, fatigue resistance, impact resistance and bonding retentivity of a tire are improved, and the service life of the tire is prolonged.

Description

technical field [0001] The invention relates to a 1×d1+6+12×d2+7×8×d2 steel cord, belonging to the technical field of steel cords. Background technique [0002] Steel cord is an important part of the skeleton material of engineering radial tires. Steel cords with a structure of 7×7×d+0.15HT are commonly used in engineering radial tires, which consist of one 7×d core strand and six 7×d outer strands. The layer strands and a 0.15mm outer wrapping wire are braided and twisted, the core strands and the outer strands are of the same structure, the diameter of the steel wires is the same, the twist direction of the 7×d structure is S, and the lay length is 12.5mm , The twist direction of the six outer strands is Z, the lay distance is 20.0mm, the twist direction of the outer wrapping wire is S, and the lay distance is 5.0mm. The strands of each layer are arranged closely, and the gap between the outer strands is relatively small. Small, the rubber cannot effectively penetrate int...

Claims

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Application Information

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IPC IPC(8): D07B1/06
CPCD07B1/06D07B1/0693D07B2201/1032D07B2201/1036D07B2201/1064D07B2201/2051D07B2201/2061D07B2401/2025D07B2501/2046
Inventor 马卫铭刘锦兰王爱萍刘湘慧潘振国曹恒祥王燕
Owner JIANGSU XINGDA STEEL TYPE CORD
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