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compact steel cord

A technology of steel cord and core wire, which is applied in the field of steel cord to achieve high corrosion resistance and prevent expansion

Active Publication Date: 2016-01-06
NV BEKAERT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such quality defects of steel cords due to the structure itself cannot be avoided by adjusting technical parameters during the manufacturing process

Method used

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Examples

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Embodiment Construction

[0029] figure 2 Shown is a cross-sectional view of the steel cord 10 of the first embodiment. The steel cord consists of a core wire with a diameter D 0 The core wire 12. With middle layer diameter D 1 The five interlayer filaments 14 constitute an interlayer surrounding the core filament 12. diameter D 1 with diameter D 0 same. With outer diameter D 2 The ten outer layer filaments 16 constitute the outer layer surrounding the middle layer. All the middle layer filaments 14 and all the outer layer filaments 16 are twisted in the same lay direction and the same lay length to form a compact structure.

[0030] Core wire diameter D 0 and outer wire diameter D 2 It also satisfies the following relationship:

[0031] 0.760 / D 2 ) <0.93.

[0032] The steel cord 10 according to the present invention is manufactured as follows. The raw material is steel wire rod. Steel wire rod has the following steel composition: minimum carbon content of 0.65% (e.g. at least 0.80% or...

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Abstract

A steel cord (20) adapted for the reinforcement of elastomer products, comprises a single core filament (22) with a core filament diameter D0 and 3N layer filaments (24, 26) twisted around the core filament in the same direction and with the same step. N ranges from four to five. The 3N layer filaments are arranged in an intermediate layer of N filaments (24) having an intermediate layer diameter D1 and in an outer layer of 2N filaments (26) having an outer layer diameter D2 and the steel cord (20) has the following characteristics (D0, D1, D2 in mm): D0<=D1<D2.

Description

technical field [0001] The present invention relates to steel cords suitable for use in reinforcing elastomeric products, in particular carcass plies for medium to heavy duty truck and passenger car radial tires. The steel cord consists of a core wire with the diameter of the core wire, and two ply wires twisted around the core wire in the same twist direction and the same lay length. Background technique [0002] Steel cords are known in the prior art, in which all the steel wires are twisted together in the same lay direction and at the same lay length; since such steel cords can accommodate a large number of steel wires in a limited cross-sectional area, Thus forming a compact cross-sectional structure, so this steel cord is called "compact steel cord". [0003] Within the grouping of compact steel cords, the following configurations are widely used in the field of reinforced elastomers: [0004] -1×d c |18×d l CC [0005] -1×d c |15×d l CC [0006] 1×d c |18×d ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D07B1/06
CPCD07B1/0633D07B2201/2006D07B2201/2029D07B2201/2051D07B2401/208D07B2801/12
Inventor 程志超田浩张爱军罗奕文唐秋菊潘雷
Owner NV BEKAERT SA