CN110284350A - A kind of meridian tyre steel wire cord - Google Patents
A kind of meridian tyre steel wire cord Download PDFInfo
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- CN110284350A CN110284350A CN201910495536.8A CN201910495536A CN110284350A CN 110284350 A CN110284350 A CN 110284350A CN 201910495536 A CN201910495536 A CN 201910495536A CN 110284350 A CN110284350 A CN 110284350A
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- steel wire
- layer strand
- intermediate layer
- outer layer
- strand
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 213
- 239000010959 steel Substances 0.000 title claims abstract description 213
- 239000000203 mixture Substances 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre cords
-
- 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
-
- 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
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1012—Rope or cable structures characterised by their internal structure
- D07B2201/102—Rope or cable structures characterised by their internal structure including a core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1032—Rope or cable structures characterised by the number of strands three to eight strands respectively forming a single layer
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1036—Rope or cable structures characterised by the number of strands nine or more strands respectively forming multiple layers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/104—Rope or cable structures twisted
- D07B2201/1044—Rope or cable structures twisted characterised by a value or range of the pitch parameter given
-
- 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
- D07B2201/2001—Wires or filaments
- D07B2201/2006—Wires or filaments characterised by a value or range of the dimension given
-
- 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
- D07B2201/2024—Strands twisted
- D07B2201/2025—Strands twisted characterised by a value or range of the pitch parameter given
-
- 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
- D07B2201/2024—Strands twisted
- D07B2201/2029—Open winding
- D07B2201/2031—Different twist pitch
-
- 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
-
- 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
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2059—Cores characterised by their structure comprising wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Ropes Or Cables (AREA)
Abstract
The invention discloses a kind of meridian tyre steel wire cords of all-steel cord technical field, it is intended to which gap is larger between layers for all-steel cord in the prior art for solution, and rubber, which cannot effectively penetrate into core strand steel wire, causes the higher technical problem of cord inner air content.A kind of meridian tyre steel wire cord, including core strand, intermediate layer strand and outer layer strand, the intermediate layer strand are twisted by four steel wires around core strand volume；The outer layer strand is twisted by ten steel wires around intermediate layer strand volume；The intermediate layer strand steel wire is identical as outer layer strand steel wire diameter, and the orientation of the intermediate layer strand steel wire is identical as the orientation of outer layer strand steel wire, and it is 0.5 times that outer layer strand steel wire compiles the twirl lay pitch that intermediate layer strand steel wire, which compiles the lay pitch twisted,；The section of the all-steel cord is circle.Gap between each layer of meridian tyre steel wire cord of the present invention is conducive to rubber and is fully infiltrated into core strand steel wire, improves the anticorrosive of tire, endurance, shock resistance and bonding retentivity, improves the service life of tire.
Description
Technical field
The invention belongs to all-steel cord technical fields, and in particular to a kind of meridian tyre steel wire cord.
Background technique
All-steel cord is the important component in radial framework material, the common 3+9 of radial ×
The all-steel cord of 0.22+0.15 structure, twisted by three steel wires of core strand, nine steel wires of outer layer strand and outer wrapping through secondary volume and
At each layer monofilament strands arrangement is closer, and gap is larger between layers, and rubber, which cannot effectively penetrate into core strand steel wire, causes cord
Inner air content is higher.The structure and its intensity of all-steel cord, bending stiffness and have with the bond properties of rubber to tire
It is direct influence, exist and can not be made up completely due to unreasonable structural design to all-steel cord controlling of production process
Defect.In the use process of radial, it is easy because all-steel cord intensity is insufficient or steel wire corrodes and abrasion leads to curtain
The problem of line bearing capacity fails.
Summary of the invention
The purpose of the present invention is to provide a kind of meridian tyre steel wire cords, to solve steel-cord ply and layer in the prior art
Between gap it is larger, rubber, which cannot effectively penetrate into core strand steel wire, causes the higher technical problem of cord inner air content.
In order to achieve the above objectives, the technical scheme adopted by the invention is that: a kind of meridian tyre steel wire cord, including core strand,
Intermediate layer strand and outer layer strand, the core strand are made of a steel wire, and no volume is twisted；The intermediate layer strand surrounds core strand by four steel wires
Volume is twisted；The outer layer strand is twisted by ten steel wires around intermediate layer strand volume；The intermediate layer strand steel wire and outer layer strand steel
Silk diameter is identical, and the orientation of the intermediate layer strand steel wire is identical as the orientation of outer layer strand steel wire, and intermediate layer strand steel wire compiles the twirl twisted
Away from being that outer layer strand steel wire is compiled and twists 0.5 times of the lay pitch；The section of the all-steel cord is circle.
The core strand steel wire diameter is 0.10~0.24mm.
The intermediate layer strand steel wire and outer layer strand steel wire diameter are 0.165~0.38mm.
The core strand steel wire diameter is 0.12mm；The intermediate layer strand steel wire and outer layer strand gauge of wire are
0.20mm。
The core strand steel wire diameter is 0.18mm；The intermediate layer strand steel wire and outer layer strand gauge of wire are
0.30mm。
The core strand steel wire is twisted without volume；The orientation of the intermediate layer strand steel wire and outer layer strand steel wire is that S is twisted.
It is 10.0-22.0mm that the outer layer strand steel wire, which compiles the lay pitch twisted,.
It is 7.0mm that the intermediate layer strand steel wire, which compiles the lay pitch twisted,；It is 14.0mm that the outer layer strand steel wire, which compiles the lay pitch twisted,.
It is 10.0mm that the intermediate layer strand steel wire, which compiles the lay pitch twisted,；It is 20.0mm that the outer layer strand steel wire, which compiles the lay pitch twisted,.
The core strand steel wire, intermediate layer strand steel wire, outer layer strand steel wire strength grade be regular tenacity NT, high intensity HT,
Superhigh intensity ST, Extra High Strength UT or very high strength MT.
Compared with prior art, advantageous effects of the invention:
(1) gap between each layer of meridian tyre steel wire cord of the present invention is conducive to rubber and is fully infiltrated into core strand steel
Silk, avoids because of the point contact friction between each layer steel wire caused by having not seeped into enough rubber between each layer, and then avoid
The problem of steel cord bearing capacity fails because of abrasion；
(2) meridian tyre steel wire cord of the present invention improves the anticorrosive of tire, endurance, shock resistance and bonding
Retentivity improves the service life of tire.
Detailed description of the invention
Fig. 1 is a kind of schematic cross-section for meridian tyre steel wire cord that the embodiment of the present invention one provides；
Fig. 2 is the schematic cross-section of 3+9 × 0.22+0.15HT structure all-steel cord commonly used in the prior art；
Fig. 3 is a kind of schematic cross-section of meridian tyre steel wire cord provided by Embodiment 2 of the present invention；
Fig. 4 is the schematic cross-section of 3+8 × 35HT structure all-steel cord commonly used in the prior art；
In figure: 1. core strand steel wires；2. intermediate layer strand steel wire；3. outer layer strand steel wire.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
It should be noted that in the description of the present invention, term "front", "rear", "left", "right", "upper", "lower", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be merely for convenience of description originally based on orientation or positional relationship shown in the drawings
It invents rather than requires the present invention that must be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term "front", "rear" used in present invention description, "left", "right", "upper", "lower" refer to the direction in attached drawing, term
"inner", "outside" refer respectively to the direction towards or away from geometric center of specific component.
As shown in Figure 1, a kind of meridian tyre steel wire cord is by a core strand steel wire, four steel wires of intermediate layer strand and outer layer strand
Ten steel wires volume twist, the section of all-steel cord is circle, and four steel wires of intermediate layer strand are centered around a core strand steel wire
Around compile twist, ten steel wires of outer layer strand be centered around around four steel wires of intermediate layer strand compile twist；Core strand steel wire selects diameter
For the steel wire of 0.10~0.24mm, the steel wire of intermediate layer strand steel wire and outer layer strand steel wire selection same diameter selects steel wire diameter
Range is 0.165~0.38mm.The present invention is made up by the structure of change all-steel cord because steel cord structure design is unreasonable
Bring defect improves the strike-through performance and shock resistance and fatigue performance of all-steel cord, reduces tire all-steel cord air
Content improves cotton tyre cord strength grade.Core strand steel wire is embedded in the centre of four steel wires of intermediate layer strand without twirl, core strand steel wire is compiled,
It is identical that intermediate layer strand steel wire and outer layer strand steel wire compile the orientation twisted；Core strand steel wire compiles twirl without the twirl lay pitch, intermediate layer strand steel wire is compiled
The lay pitch is 0.5 times that outer layer strand steel wire compiles the twirl lay pitch, increases the contact area between each layer steel wire, it is each to reduce all-steel cord
Point contact friction between layer steel wire avoids holding in radial use process because cord occurs in the abrasion of each layer steel wire point contact
The problem of loading capability fails, strike-through performance, anticorrosive, endurance and the shock resistance and bonding for improving radial are protected
Holding force, the service life for improving tire.
Core strand steel wire, intermediate layer strand steel wire, outer layer strand steel wire strength grade be regular tenacity NT, high intensity HT, superelevation
Intensity ST, Extra High Strength UT or very high strength MT.The present invention is suitable for regular tenacity NT, high intensity HT, superhigh intensity ST, spy
The steel wire of high-intensitive UT or very high strength MT different intensity grades carries out volume twirl, can be improved to compile and twists the strong of the all-steel cord formed
Degree requirement and strike-through performance and shock resistance and fatigue performance.
Embodiment one:
It is 0.12mm that core strand gauge of wire is selected in the present embodiment, and intermediate layer strand steel wire and outer layer strand gauge of wire are equal
For 0.20mm., it is 7.0mm that intermediate layer strand steel wire, which compiles the lay pitch twisted, and it is 14.0mm that outer layer strand steel wire, which is compiled and twisted,., intermediate layer strand steel
Silk 2 is 0.5 times that outer layer strand steel wire 3 compiles the lay pitch twisted.Core strand steel wire is used without twirl, intermediate layer strand steel wire and outer layer strand steel wire is compiled
Identical orientation is that S is twisted.The present embodiment steel cord 0.12+4+10 × 0.20ST structure is used for radial.
Table 1 is that the common 3+9 × 0.22+0.15HT structure all-steel cord of radial and the present invention are real in the prior art
Apply the performance indicator contrast table of example one:
Table 1
Fig. 2 is the schematic cross-section of 3+9 × 0.22+0.15HT structure all-steel cord commonly used in the prior art, in conjunction with figure
1, Fig. 2, table 1 are as can be seen that the diameter of 3+9 × 0.22+0.15HT structure all-steel cord is 1.14mm, core strand steel wire, middle layer
Stock steel wire is that S is twisted, twined the orientation of steel wire outside as Z twirl, and the lay pitch of core strand steel wire is 6.3mm, and the lay pitch of intermediate layer strand steel wire is
12.5mm, the lay pitch for twining steel wire outside is 3.5mm, and Fracture Force >=1360N, line density 3.85g/m, Fracture Force/line density is
353.3N/ (g/m), bonding force >=850N/25mm；The diameter of the all-steel cord of the embodiment of the present invention one is 0.92mm, core strand steel
Silk is that S is twisted without the orientation for compiling twirl, intermediate layer strand steel wire, outer layer strand steel wire, and core strand steel wire is embedded in four steel wires of intermediate layer strand
Centre, intermediate layer strand wire pitch are 7.0mm, and outer layer strand wire pitch is 14.0mm, and Fracture Force >=1460N, line density is
3.60g/m, Fracture Force/line density are 405.5N/ (g/m), bonding force >=950N/25mm；The two is compared, the embodiment of the present invention one
Using the steel wire of superhigh intensity grade, core strand steel wire diameter is 0.12mm, intermediate layer strand steel wire and outer layer strand gauge of wire are
0.20mm, core strand steel wire are without the twirl lay pitch, the lay pitch of intermediate layer strand steel wire is compiled embedded in the centre of four steel wires of intermediate layer strand
7.0mm, the lay pitch of outer layer strand steel wire are 14.0mm, reduce the diameter and line density, increasing of all-steel cord by reducing filament diameter
Add monofilament radical to improve cord strength, improves the fatigue performance of all-steel cord.
Embodiment two:
It is 0.18mm that core strand gauge of wire is selected in the present embodiment, and intermediate layer strand steel wire and outer layer strand gauge of wire are equal
For 0.30mm, it is 10.0mm that intermediate layer strand steel wire, which compiles the lay pitch twisted, and it is 20.0mm, intermediate layer strand steel wire that outer layer strand steel wire, which is compiled and twisted,
It is 0.5 times that outer layer strand steel wire compiles the lay pitch twisted.Core strand steel wire is without volume twirl, intermediate layer strand steel wire with outer layer strand steel wire using identical
Orientation is that S is twisted.The present embodiment steel cord 0.18+4+10 × 0.30HT structure is used for radial.
Table 2 is the common 3+8 × 35HT structure all-steel cord of radial in the prior art and the embodiment of the present invention two
Performance indicator contrast table:
Table 2
Fig. 4 is the schematic cross-section of 3+8 × 35HT structure all-steel cord commonly used in the prior art, in conjunction with Fig. 3, Fig. 4, table
2 as can be seen that the diameter of 3+8 × 0.35HT structure all-steel cord is 1.44mm, and core strand steel wire, intermediate layer strand steel wire are that S is twisted,
The lay pitch of core strand steel wire is 10.0mm, and the lay pitch of outer layer strand steel wire is 20.0mm, Fracture Force >=2860N, line density 8.44g/
M, Fracture Force/line density are 338.9N/ (g/m), bonding force >=1100N/25mm；The all-steel cord of the embodiment of the present invention two it is straight
Diameter is 1.38mm, and core strand steel wire is S twirl without the orientation for compiling twirls, intermediate layer strand steel wire, outer layer strand steel wire, during core strand steel wire is embedded in
The centre of four steel wires of interbed stock, intermediate layer strand wire pitch be 10.0mm, outer layer strand wire pitch be 20.0mm, Fracture Force >=
3020N, line density 8.06g/m, Fracture Force/line density are 374.7N/ (g/m), bonding force >=1180N/25mm；The two phase
Than, the embodiment of the present invention two using the steel wire of same intensity grade, core strand steel wire diameter is 0.18mm, intermediate layer strand steel wire and outer
Layer stock gauge of wire is 0.30mm, and core strand steel wire twists the lay pitch, intermediate layer strand without volume embedded in the centre of four steel wires of intermediate layer strand
The lay pitch of steel wire is 10.0mm, and the lay pitch of outer layer strand steel wire is 20.0mm, reduces the straight of all-steel cord by reducing filament diameter
Diameter and line density increase monofilament radical to improve cord strength, improve the rigidity and fatigue performance of all-steel cord.
By comparing above as can be seen that when production is with isopycnic radial, using the meridian of the invention made
Line tire intensity is than improving 10% or more using the radial intensity of prior art production.Radial tire steel wire of the present invention
Cord is had excellent performance, and can effectively improve the intensity of radial, is reduced tire production cost, is extended making for radial
Use the service life.
The embodiment of the present invention is only example.According to different applications, the ten of 1+4+10 structural outside layers stock of the invention
Root monofilament can reduce by a monofilament, and different-diameter can be used to match in the monofilament of intermediate layer strand and the monofilament of outer layer strand, structure
Formula is 1+4+9, orientation is divided into S/S or Z/Z.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of meridian tyre steel wire cord, characterized in that including core strand, intermediate layer strand and outer layer strand, the core strand is by a steel
Silk composition, no volume are twisted；The intermediate layer strand is twisted by four steel wires around core strand volume；The outer layer strand is surrounded by ten steel wires
Intermediate layer strand volume is twisted；The intermediate layer strand steel wire (2) is identical as outer layer strand steel wire (3) diameter, the intermediate layer strand steel wire
(2) orientation is identical as the orientation of outer layer strand steel wire (3), and it is that outer layer strand steel wire (3) are compiled that intermediate layer strand steel wire (2), which compiles the lay pitch twisted,
0.5 times for twisting the lay pitch；The section of the all-steel cord is circle.
2. meridian tyre steel wire cord according to claim 1, characterized in that core strand steel wire (1) diameter be 0.10 ~
0.24 mm。
3. meridian tyre steel wire cord according to claim 1, characterized in that the intermediate layer strand steel wire (2) and outer layer strand
Steel wire (3) diameter is 0.165 ~ 0.38mm.
4. meridian tyre steel wire cord according to claim 1, characterized in that core strand steel wire (1) diameter is 0.12
mm；The diameter of the intermediate layer strand steel wire (2) and outer layer strand steel wire (3) is 0.20mm.
5. meridian tyre steel wire cord according to claim 1, characterized in that core strand steel wire (1) diameter is 0.18
mm；The diameter of the intermediate layer strand steel wire (2) and outer layer strand steel wire (3) is 0.30mm.
6. meridian tyre steel wire cord according to claim 1, characterized in that the core strand steel wire (1) is twisted without volume；In described
The orientation of interbed stock steel wire (2) and outer layer strand steel wire (3) is that S is twisted.
7. meridian tyre steel wire cord according to claim 1, characterized in that the outer layer strand steel wire (3) compiles the lay pitch twisted
For 10.0-22.0 mm.
8. meridian tyre steel wire cord according to claim 1, characterized in that the intermediate layer strand steel wire (2) compiles the twirl twisted
Away from for 7.0mm；It is 14.0mm that the outer layer strand steel wire (3), which compiles the lay pitch twisted,.
9. meridian tyre steel wire cord according to claim 1, characterized in that the intermediate layer strand steel wire (2) compiles the twirl twisted
Away from for 10.0mm；It is 20.0mm that the outer layer strand steel wire (3), which compiles the lay pitch twisted,.
10. meridian tyre steel wire cord according to claim 1, characterized in that the core strand steel wire (1), intermediate layer strand steel
Silk (2), outer layer strand steel wire (3) strength grade be regular tenacity NT, high intensity HT, superhigh intensity ST, Extra High Strength UT or pole
High-intensitive MT.
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| CN201910495536.8A CN110284350A (en) | 2019-06-10 | 2019-06-10 | A kind of meridian tyre steel wire cord |
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| CN201910495536.8A CN110284350A (en) | 2019-06-10 | 2019-06-10 | A kind of meridian tyre steel wire cord |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735340A (en) * | 2019-11-22 | 2020-01-31 | 江苏兴达钢帘线股份有限公司 | seventeen radial tire steel cord |
| CN112647328A (en) * | 2020-12-28 | 2021-04-13 | 江苏兴达钢帘线股份有限公司 | Steel cord and preparation process thereof |
| CN112779797A (en) * | 2021-01-15 | 2021-05-11 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
| CN113123149A (en) * | 2021-04-22 | 2021-07-16 | 江苏兴达钢帘线股份有限公司 | Steel cord with glue permeation structure and preparation method thereof |
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| CN205368875U (en) * | 2015-12-31 | 2016-07-06 | 江苏兴达钢帘线股份有限公司 | Super -strength steel wire cord |
| CN109281026A (en) * | 2018-11-10 | 2019-01-29 | 江苏兴达钢帘线股份有限公司 | A kind of hypertonic colloidality energy meridian all-steel cord |
| CN210797071U (en) * | 2019-06-10 | 2020-06-19 | 江苏兴达钢帘线股份有限公司 | Radial tire steel wire cord |
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| CN110735340A (en) * | 2019-11-22 | 2020-01-31 | 江苏兴达钢帘线股份有限公司 | seventeen radial tire steel cord |
| CN112647328A (en) * | 2020-12-28 | 2021-04-13 | 江苏兴达钢帘线股份有限公司 | Steel cord and preparation process thereof |
| CN112779797A (en) * | 2021-01-15 | 2021-05-11 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
| CN113123149A (en) * | 2021-04-22 | 2021-07-16 | 江苏兴达钢帘线股份有限公司 | Steel cord with glue permeation structure and preparation method thereof |
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