Steel cord and manufacturing method thereof

A steel cord and steel wire technology, applied in the field of steel cord, can solve the problems of insufficient rubber penetration, affecting tire fatigue performance, cord warping, etc., and achieve good rubber penetration performance, increase tire life, and improve fatigue performance.

Inactive Publication Date: 2021-08-24
嘉兴东方钢帘线有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the current 1+n steel cord is produced on a double-twisting machine, the residual stress of the inner and outer layers is different, which easily causes the cord to warp. At the same time, because the outer layer n is too tightly wrapped, the penetration of the rubber is not sufficient, which affects the fatigue performance of the tire.

Method used

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  • Steel cord and manufacturing method thereof
  • Steel cord and manufacturing method thereof
  • Steel cord and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The cross section of the central steel wire is rectangular, with a central steel wire and 6 sheath steel wires, the width of the central steel wire is 0.38mm, the thickness of the central steel wire is 0.28mm, and the three sheath steel wires are pre-deformed, pre-formed by a polygonal pre-deformer or by The gear meshes and deforms, and the remaining three sheath wires do not have deformation. The diameters of the three sheath wires with pre-deformation are 0.28 mm, and the diameters of the three sheath wires without deformation are 0.30 mm.

Embodiment 2

[0035] The cross-section of the central steel wire is elliptical, with one central steel wire and six sheath steel wires. The major axis a value of the central steel wire is 0.42mm, the short axis b value of the central steel wire is 0.31mm, and the diameter of the six sheath steel wires is 0.32mm. Pre-deform via the polygonal pre-deformer.

Embodiment 3

[0037] The cross-section of the central steel wire is waist-circular, with a central steel wire and 6 sheath steel wires. The width of the central steel wire is 0.40mm, and the thickness of the central steel wire is 0.30mm. Or through gear meshing deformation, the remaining three sheath wires do not have deformation, the diameter of the three sheath wires with pre-deformation is 0.30mm, the wave height of the deformed steel wires is between 0.35-0.38mm, and the three sheath wires without deformation The diameter is 0.32mm.

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Abstract

The invention discloses a steel cord and a manufacturing method thereof. The steel cord is composed of a special-shaped center steel wire and at least one pre-deformed sheath steel wire. The problem of corner warping caused by inconsistent residual stress of an inner layer and an outer layer after the steel cord is embedded into rubber is weakened, a cord fabric is smoother, forming is better, and the production process is more stable. Meanwhile, the permeability of the rubber is improved, air existing in the steel cord after the rubber is vulcanized is reduced or eliminated, the corrosion resistance of the tire is improved, and therefore the service life of the tire is prolonged.

Description

technical field [0001] The invention relates to the technical field of steel cords, in particular to a steel cord and a manufacturing method of the steel cord. Background technique [0002] Steel cord is a fine-gauge steel wire strand or rope made of high-quality high-carbon steel with a brass-plated surface and a special purpose. Mainly used for car tires, light truck tires, heavy truck tires, construction machinery tires and aircraft tires and other rubber products skeleton materials. The radial tire made of steel cord as a reinforcing material has the advantages of long service life, fast driving speed, puncture resistance, good elasticity, safety and comfort, and fuel saving. [0003] When the current 1+n steel cord is produced on a double-twisting machine, the residual stress of the inner and outer layers is different, which easily causes the cord to warp. At the same time, because the outer layer n is too tightly wrapped, the rubber material does not penetrate suffici...

Claims

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Application Information

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IPC IPC(8): D07B1/06
CPCD07B1/06D07B1/0673D07B1/0686D07B2201/102D07B2201/2048D07B2201/2059D07B2401/208D07B2501/2046
Inventor 宋瑞贵黄柏华赵学武钱建刚杨平任胜军
Owner 嘉兴东方钢帘线有限公司
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