CN216141684U - Steel cord for all-steel truck radial tire - Google Patents
Steel cord for all-steel truck radial tire Download PDFInfo
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- CN216141684U CN216141684U CN202121417806.2U CN202121417806U CN216141684U CN 216141684 U CN216141684 U CN 216141684U CN 202121417806 U CN202121417806 U CN 202121417806U CN 216141684 U CN216141684 U CN 216141684U
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- strand layer
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
- D07B1/0633—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration having a multiple-layer configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
- D07B1/0626—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration the reinforcing cords consisting of three core wires or filaments and at least one layer of outer wires or filaments, i.e. a 3+N configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2036—Strands characterised by the use of different wires or filaments
- D07B2201/2037—Strands characterised by the use of different wires or filaments regarding the dimension of the wires or filaments
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2051—Cores characterised by a value or range of the dimension given
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- Ropes Or Cables (AREA)
- Tires In General (AREA)
Abstract
The utility model discloses a steel cord for an all-steel load radial tire, which comprises a core strand layer, a middle strand layer and an outer strand layer, wherein the core strand layer consists of three monofilaments with the diameter of D1 and distributed in an equilateral triangle, the middle strand layer consists of nine monofilaments with the diameter of D2, the nine monofilaments of the middle strand layer surround and are uniformly woven and twisted around the core strand layer in an annular mode, the outer strand layer consists of fifteen monofilaments with the diameter of D3, the fifteen monofilaments of the outer strand layer surround and are uniformly woven and twisted around the middle strand layer in an annular mode, and the monofilament diameter D1 of the core strand layer, the monofilament diameter D2 of the middle strand layer and the monofilament diameter D3 of the outer strand layer meet the following relations: D1D 2D 3, D1 is less than or equal to 1.05D2, D2 is less than or equal to 1.05D3, rubber can fully penetrate and embed around the monofilament in the steel cord for the all-steel truck radial tire, the adhesive force between the steel cord and the rubber is improved, and the service life of the tire is prolonged.
Description
Technical Field
The utility model relates to the technical field of tires, in particular to a steel cord for an all-steel truck radial tire.
Background
With the rapid development of the automobile industry, the demand of radial tires is increasing continuously, and higher requirements are put on the performance and quality of a steel cord, at present, a 7 × 0.22+0.15HT steel cord is generally adopted as a framework material in an all-steel truck radial tire technology, the steel cord comprises a core strand, an outer layer strand and an outer wrap wire, the outer layer strand is distributed around the core strand, the outer wrap wire is wound on the outer layer strand, the outer layer strand and the core strand are both of a structure in which six steel wires surround the core wire, and due to the compact structure of the steel cord, in a glue permeation process, glue is difficult to permeate into the core strand from the outer layer strand, so that the adhesive force between rubber and the steel cord is reduced, water vapor in a wet environment can invade into the steel cord to cause corrosion, the corrosion resistance of the tire is reduced, and the service life of the tire is prolonged.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a steel cord for all-steel heavy duty radial tires to solve the above-mentioned technical problems.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a steel cord for an all-steel heavy-duty radial tire comprises a core strand layer, a middle strand layer and an outer strand layer, wherein the core strand layer consists of three monofilaments with the diameter of D1 distributed in an equilateral triangle shape, the middle strand layer consists of nine monofilaments with the diameter of D2, the nine monofilaments of the middle strand layer are uniformly woven and twisted around the core strand layer in an annular shape, the outer strand layer consists of fifteen monofilaments with the diameter of D3, the fifteen monofilaments of the outer strand layer are uniformly woven and twisted around the middle strand layer in an annular shape, and the monofilament diameter D1 of the core strand layer, the monofilament diameter D2 of the middle strand layer and the monofilament diameter D3 of the outer strand layer meet the following relations: d1 is more than D2 is more than D3, D1 is less than or equal to 1.05D2, and D2 is less than or equal to 1.05D 3.
Further, the monofilament diameter D3 of the outer strand layer ranges from 0.241mm to 0.253 mm.
Further, the twist direction of the core strand layer, the intermediate strand layer and the outer strand layer is the same.
Further, the twisting directions of the core strand layer, the middle strand layer and the outer strand layer are all Z.
Further, the monofilaments of the core strand layer, the middle strand layer and the outer strand layer are all steel wires with the carbon content of 0.82-0.85%.
Further, the diameter range of the steel cord for the all-steel truck radial tire is 1.43-1.59mm, and the linear density is 9.9-10.6 g/m.
Further, the rubber coating rate of the steel cord for the all-steel truck radial tire is 90%.
The utility model has the beneficial effects that:
the steel cord with the compact structure, which is prepared by the utility model, the core strand layer consists of three monofilaments with the diameter of D1, the middle strand layer consists of nine monofilaments with the diameter of D2, the nine monofilaments of the middle strand layer are uniformly distributed around the core strand layer in a ring shape, the outer strand layer consists of fifteen monofilaments with the diameter of D3, the fifteen monofilaments of the outer strand layer are uniformly distributed around the middle strand layer in a ring shape, and because D1> D2> D3, gaps exist between the core strand layer and the middle strand layer and between the middle strand layer and the outer strand layer of the steel cord, so that rubber can fully permeate and embed to the peripheries of the monofilaments through the gaps during vulcanization, the rubber infiltration performance is greatly improved, the adhesive force between the steel cord and the rubber is effectively improved, the structural stability of the steel cord in a tire is effectively improved, and the rubber can fully permeate into the steel cord due to the structure, the compact structure formed by rubber coating can effectively avoid the invasion of water vapor, improve the corrosion resistance of the cord, and enhance the adhesion retentivity of the steel cord, thereby effectively prolonging the service life of the tire.
Drawings
The utility model is further illustrated by the following figures and examples.
FIG. 1 is a schematic structural view of a steel cord for an all-steel heavy duty radial tire according to the present invention
In the figure: 100. the steel cord for the all-steel truck radial tire comprises 1 a core strand layer, 2 a middle strand layer, 3 an outer strand layer.
Detailed Description
As shown in fig. 1, the present invention provides a steel cord 100 for an all-steel heavy duty radial tire, which is used as a skeleton structure in the all-steel heavy duty radial tire, the steel cord for the all-steel heavy duty radial tire has a structure of 3+9+15, the steel cord 100 for the all-steel heavy duty radial tire comprises a core strand layer 1, a middle strand layer 2 and an outer strand layer 3, the twist directions of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 are the same, the twist direction of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 is Z, the core strand layer 1 is composed of three monofilaments with the diameter of D1, the three monofilaments of the core strand layer 1 are distributed in an equilateral triangle, the middle strand layer 2 is composed of nine monofilaments with the diameter of D2, the nine monofilaments of the middle strand layer 2 are woven and twisted around the core strand layer 1, the nine monofilaments of the middle strand layer 2 are uniformly distributed around the core strand layer 1 in a ring shape, the outer strand layer 3 is composed of fifteen monofilaments with the diameter of D3, fifteen monofilaments of the outer strand layer 3 are twisted around the middle strand layer 2, fifteen monofilaments of the outer strand layer 3 are uniformly distributed around the middle strand layer 2 in an annular manner, the monofilaments of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 all adopt steel wires with carbon content of 0.82-0.85%, and the diameters of the monofilaments of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 meet the following relations: d1> D2> D3, D1 is less than or equal to 1.05D2, D2 is less than or equal to 1.05D3, wherein the diameter range of D3 is 0.241-0.253 mm.
The steel cord 100 for the all-steel truck radial tire comprises the following preparation steps:
(1) carrying out surface treatment on a wire rod with the carbon content of 0.82-0.85% and the diameter of 5.5mm, carrying out rough drawing, drawing to the diameter of 2.2-2.8mm, carrying out normalizing treatment to remove work hardening, and then carrying out intermediate drawing to obtain a dry-drawn steel wire with the diameter of 0.8-1.6mm, (2) sequentially carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire, and then electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form three wet-drawn steel wires with the diameters of D1, D2 and D3 respectively; and (4) selecting three wet-drawn steel wires with the diameter of D1 as the monofilaments of the core strand layer 1, selecting nine wet-drawn steel wires with the diameter of D2 as the monofilaments of the middle strand layer 2, selecting fifteen wet-drawn steel wires with the diameter of D3 as the monofilaments of the outer strand layer 3, twisting the monofilaments of the three core strand layers 1 into the core strand layer 1 by a stranding double-twisting machine, twisting the monofilaments of the core strand layer 1 and the nine middle strand layers 2 into a central strand by the stranding double-twisting machine, twisting the monofilaments of the fifteen outer strand layers 3 and the central strand into a steel cord with a structure of 3+9+15 by the double-twisting machine, and inspecting to obtain the steel cord 100 for the all-steel load radial tire.
Example 1
In the steel cord for all-steel truck radial tire of the present embodiment, the core strand layer 1 is composed of three monofilaments with a diameter of 0.265mm, the middle strand layer 2 is composed of nine monofilaments with a diameter of 0.253mm, the outer strand layer 3 is composed of fifteen monofilaments with a diameter of 0.241mm, and the monofilaments of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 all adopt steel wires with a carbon content of 0.82%.
The steel cord 100 for all-steel truck radial tire of the present embodiment includes the following preparation steps:
(1) carrying out surface treatment on a wire rod with the carbon content of 0.82% and the diameter of 5.5mm, carrying out rough drawing, drawing to the diameter of 2.2mm, carrying out normalizing treatment to remove work hardening, then carrying out middle drawing to obtain a dry-drawn steel wire with the diameter of 0.8mm, (2) sequentially carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire, and then electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form three wet-drawn steel wires with the diameters of 0.265mm, 0.253mm and 0.241mm respectively; and (4) selecting three wet-drawn steel wires with the diameter of 0.265mm as the monofilaments of the core strand layer 1, selecting nine wet-drawn steel wires with the diameter of 0.253mm as the monofilaments of the middle strand layer 2, selecting fifteen wet-drawn steel wires with the diameter of 0.241mm as the monofilaments of the outer strand layer 3, twisting the monofilaments of the three core strand layers 1 into the core strand layer 1 through a stranding double-twisting machine, twisting the monofilaments of the core strand layer 1 and the nine middle strand layers 2 into a central strand through the stranding double-twisting machine, twisting the monofilaments of the fifteen outer strand layers 3 and the central strand into a steel cord with a structure of 3+9+15 through the double-twisting machine, and inspecting to obtain the steel cord 100 for the all-steel load radial tire.
Example 2
In the steel cord for all-steel truck radial tire of the embodiment, the core strand layer 1 is composed of three monofilaments with the diameter of 0.269mm, the middle strand layer 2 is composed of nine monofilaments with the diameter of 0.257mm, the outer strand layer 3 is composed of fifteen monofilaments with the diameter of 0.245mm, and the monofilaments of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 all adopt steel wires with the carbon content of 0.82-0.85%.
The steel cord 100 for all-steel truck radial tire of the present embodiment includes the following preparation steps:
(1) carrying out surface treatment on a wire rod with the carbon content of 0.84% and the diameter of 5.5mm, carrying out rough drawing, drawing to the diameter of 2.5mm, carrying out normalizing treatment to remove work hardening, then carrying out middle drawing to obtain a dry-drawn steel wire with the diameter of 1.2mm, (2) sequentially carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire, and then electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form three wet-drawn steel wires with the diameters of 0.269mm, 0.257mm and 0.245mm respectively; (4) selecting three wet-drawn steel wires with the diameter of 0.269mm as the monofilaments of the core strand layer 1, selecting nine wet-drawn steel wires with the diameter of 0.257mm as the monofilaments of the middle strand layer 2, selecting fifteen wet-drawn steel wires with the diameter of 0.245mm as the monofilaments of the outer strand layer 3, twisting the monofilaments of the three core strand layers 1 into the core strand layer 1 through a plying double-twisting machine, twisting the monofilaments of the core strand layer 1 and the nine middle strand layers 2 into a central strand through the plying double-twisting machine, twisting the monofilaments of the fifteen outer strand layers 3 and the central strand into a steel cord with a structure of 3+9+15 through the double-twisting machine, and inspecting to obtain the steel cord 100 for the all-steel load radial tire.
Example 3
In the steel cord for all-steel truck radial tire of the embodiment, the core strand layer 1 is composed of three monofilaments with the diameter of 0.278mm, the middle strand layer 2 is composed of nine monofilaments with the diameter of 0.265mm, the outer strand layer 3 is composed of fifteen monofilaments with the diameter of 0.253mm, and the monofilaments of the core strand layer 1, the middle strand layer 2 and the outer strand layer 3 all adopt steel wires with the carbon content of 0.82-0.85%.
The steel cord 100 for all-steel truck radial tire of the present embodiment includes the following preparation steps:
(1) carrying out surface treatment on a wire rod with the carbon content of 0.85% and the diameter of 5.5mm, carrying out rough drawing, drawing to the diameter of 2.8mm, carrying out normalizing treatment to remove work hardening, then carrying out middle drawing to obtain a dry-drawn steel wire with the diameter of 1.6mm, (2) sequentially carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire, and then electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form three wet-drawn steel wires with the diameters of 0.278mm, 0.265mm and 0.253mm respectively; and (4) selecting three wet-drawn steel wires with the diameter of 0.278mm as the monofilaments of the core strand layer 1, selecting nine wet-drawn steel wires with the diameter of 0.265mm as the monofilaments of the middle strand layer 2, selecting fifteen wet-drawn steel wires with the diameter of 0.253mm as the monofilaments of the outer strand layer 3, twisting the monofilaments of the three core strand layers 1 into the core strand layer 1 through a stranding double-twisting machine, twisting the monofilaments of the core strand layer 1 and the nine middle strand layers 2 into a central strand through the stranding double-twisting machine, twisting the monofilaments of the fifteen outer strand layers 3 and the central strand into a steel cord with a structure of 3+9+15 through the double-twisting machine, and inspecting to obtain the steel cord 100 for the all-steel load radial tire.
Comparative example
Commercially available steel cord of specification 7x7x0.22+0.15HT
Examples of the experiments
The steel cords of examples 1 to 3 were tested for coating rate based on the "adhesion test method" of the steel cord test method (GB/T33159-2016).
The steel cords prepared in examples 1 to 3 were tested and compared by experiment, and the test data are shown in table 1:
table 1: data comparison table of steel cord samples of examples 1 to 3 and steel cord sample of comparative example
As can be seen from table 1, in the steel cord samples of examples 1 to 3 of the present invention, compared with the steel cord sample of the comparative example, the gaps between the monofilaments are large, so that the rubber can sufficiently penetrate and embed around each steel cord monofilament through the gaps between the monofilaments during vulcanization, the rubber coverage rate reaches 90%, the rubber penetration performance is greatly improved, the adhesive force between the steel cord and the rubber is effectively improved, thereby effectively preventing the corrosion caused by the intrusion of water vapor into the steel cord in a humid environment, improving the corrosion resistance of the steel cord, and prolonging the service life of the steel cord.
In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides an all-steel load radial tire uses steel cord which characterized in that, includes core strand layer, middle strand layer and outer strand layer, the core strand layer comprises three monofilaments that are equilateral triangle distribution that are diameter D1, middle strand layer comprises nine monofilaments that are diameter D2, nine monofilaments of middle strand layer are the annular around evenly weaving twist around the core strand layer, outer strand layer comprises fifteen monofilaments that are diameter D3, fifteen monofilaments of outer strand layer are the annular around evenly weaving twist around the middle strand layer, the monofilament diameter D1 of core strand layer, the monofilament diameter D2 of middle strand layer and the monofilament diameter D3 of outer strand layer satisfy the following relation: d1 is more than D2 is more than D3, D1 is less than or equal to 1.05D2, and D2 is less than or equal to 1.05D 3.
2. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the monofilament diameter D3 of the outer strand layer is in the range of 0.241-0.253 mm.
3. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the twist directions of the core strand layer, the intermediate strand layer and the outer strand layer are the same.
4. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the twist direction of the core strand layer, the intermediate strand layer and the outer strand layer is Z.
5. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the monofilaments of said core strand layer, said intermediate strand layer and said outer strand layer are all steel wires having a carbon content of 0.82-0.85%.
6. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the steel cord for all-steel heavy duty radial tire has a diameter range of 1.43-1.59mm and a linear density of 9.9-10.6 g/m.
7. The steel cord for all-steel heavy duty radial tire according to claim 1, characterized in that the rubber coverage of the steel cord for all-steel heavy duty radial tire is 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417806.2U CN216141684U (en) | 2021-06-24 | 2021-06-24 | Steel cord for all-steel truck radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121417806.2U CN216141684U (en) | 2021-06-24 | 2021-06-24 | Steel cord for all-steel truck radial tire |
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| Publication Number | Publication Date |
|---|---|
| CN216141684U true CN216141684U (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121417806.2U Active CN216141684U (en) | 2021-06-24 | 2021-06-24 | Steel cord for all-steel truck radial tire |
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| CN (1) | CN216141684U (en) |
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2021
- 2021-06-24 CN CN202121417806.2U patent/CN216141684U/en active Active
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