CN110904551A - 1+ N + N + N structural steel cord - Google Patents
1+ N + N + N structural steel cord Download PDFInfo
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- CN110904551A CN110904551A CN201911258566.3A CN201911258566A CN110904551A CN 110904551 A CN110904551 A CN 110904551A CN 201911258566 A CN201911258566 A CN 201911258566A CN 110904551 A CN110904551 A CN 110904551A
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- 229910000746 Structural steel Inorganic materials 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 88
- 239000010959 steel Substances 0.000 claims abstract description 88
- 238000004804 winding Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
Images
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
- 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
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- 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
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
-
- 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
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
-
- 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
-
- 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
- D07B2201/2015—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
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Ropes Or Cables (AREA)
Abstract
The invention discloses a 1+ N + N + N structural steel cord, which comprises a central layer, an intermediate layer and an outer layer, wherein the central layer consists of a steel wire with the diameter of 1 plus N steel wires with the diameter of 2, the N steel wires with the diameter of 3 in the intermediate layer are wound around the central layer, and the N steel wires with the diameter of 4 in the outer layer are wound around the intermediate layer; the gaps between the adjacent wires in the same layer in the central layer are not less than 20 μm, and the gaps between the adjacent wires in the same layer in the intermediate layer and the outer layer are not less than 25 μm. The steel wire cord has an open structure, the steel wires are in line contact, the rubber permeation and breaking tension of the steel wire cord are greatly improved, the fatigue resistance and the load carrying performance of the steel wire cord are improved, the tire has good adaptability under severe environment road conditions, and the service life of the tire is prolonged.
Description
Technical Field
The invention relates to a steel cord of an all-steel truck radial tire, an engineering vehicle radial tire carcass and a rubber protection reinforcing layer, in particular to a 1+ N + N + N structural steel cord.
Background
The engineering radial tire is generally suitable for mines and large-scale engineering construction projects. The belt ply is a main stressed component of the radial tire and is used for bearing deformation stress such as periodic stretching, bending and shearing. The belt layer plays an important role in safety, comfort, high-speed performance and durability of the tire, and although these properties are related to the cutting angle, width and cord density of the belt layer, they are more closely related to the performance of the steel cord. The steel cord for the belted layer can be helpful to improve the performance of the belted layer only if the steel cord has higher strength, higher glue permeability and fatigue resistance, thereby improving the quality of the tire.
The Chinese patent publication No. CN103485216A discloses a three-layer steel cord with a 4+10+16 structure, and the Chinese patent publication No. CN206768318U discloses a steel cord for a carcass of an all-steel truck radial tire, in these prior patents, because a core strand is quadrangular, the rubber infiltration property of the steel cord is poor, particularly, the rubber is difficult to infiltrate into the inner layer of the core strand of the steel cord, and simultaneously, the whole cord can be conducted after air infiltration, the cord aging is accelerated, and the service cycle of the tire is shortened.
The existing engineering tire cord structure mainly has the structures of 3+6, 3+9+15+ W, 7 multiplied by 7+ W and the like, and the fatigue performance of the steel cord is reduced due to point contact among monofilaments, so that the service life of the tire is influenced.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a fully-rubberized 1+ N + N + N structural steel cord for an all-steel radial tire of an engineering vehicle, which has an open structure and is in line contact with steel wires, so that the rubber permeation and breaking tension of the steel cord are greatly improved, the fatigue resistance and the load-carrying performance of the steel cord are improved, the adaptability of the tire under severe environmental road conditions is better, and the service life of the tire is prolonged.
In order to achieve the purpose, the invention adopts the technical scheme that:
a1 + N + N + N structural steel cord comprising a central layer, an intermediate layer and an outer layer, said central layer consisting of one steel wire of diameter 1 plus N steel wires of diameter 2, in said intermediate layer N steel wires of diameter 3 are wound around the central layer, in said outer layer N steel wires of diameter 4 are wound around the intermediate layer; the gaps between the adjacent wires in the same layer in the central layer are not less than 20 μm, and the gaps between the adjacent wires in the same layer in the intermediate layer and the outer layer are not less than 25 μm.
Preferably, the diameter 1 and the diameter 2 of the central layer steel wire are 75-170% of the diameter 3 of the middle layer steel wire, and the diameter 4 of the outer layer steel wire is 75-170% of the diameter 3 of the middle layer steel wire.
Preferably, the central layer, the intermediate layer and the outer layer are co-twisted S/S/S or Z/Z/Z.
Preferably, the lay length of the central layer is 30-83% of that of the middle layer, and the lay length of the middle layer is 30-83% of that of the outer layer.
Preferably, the central layer comprises 1+ N steel wires, and N is 4-8; the middle layer comprises N steel wires, and N is 5-13; the outer layer comprises N steel wires, and N is 6-18.
Preferably, the central layer consists of a steel wire with the diameter of 1 plus N steel wires with the diameter of 2, when N is more than or equal to 6, the diameter of 1 > 2, and when N is more than or equal to 4 and less than 6, the diameter of 1 > 2. After adopting above-mentioned structure, guaranteed the appropriate clearance of steel wire, the structure is more open, improves rubber infiltration ability.
Preferably, the content of Cu in the steel wire is 58-74%, and the content of Zn in the steel wire is 26-42%.
Preferably, the steel wire is a cord with 0.66-1.20% of C content or a cord with 0.20-0.65% of C content.
Preferably, if the steel cord is required to be wound with an outer winding, the diameter of the outer winding is 0.15-0.25 mm, and the twisting direction is opposite to that of the outermost cord.
The radial tire uses the steel cord to reinforce the high-permeation rubber performance of the framework material.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a 1+ N + N + N structural steel cord, wherein a central layer is composed of a steel wire with the diameter of 1 plus N steel wires with the diameter of 2, N steel wires with the diameter of 3 are wound around the central layer in an intermediate layer, and N steel wires with the diameter of 4 are wound around the intermediate layer in an outer layer. In addition, the steel wires are in line contact, so that the rubber permeation and breaking tension of the steel wire cord are greatly improved, the fatigue resistance and the load carrying performance of the steel wire cord are improved, the adaptability of the tire under severe environment road conditions is better, and the service life of the tire is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a steel cord according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a steel cord according to yet another embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a 1+ N + N + N structural steel cord, in particular to a steel cord which is used as an all-steel truck radial tire, an engineering vehicle radial tire carcass and a rubber protection reinforcing layer and has high strength and good adhesive permeation and fatigue resistance.
As shown in FIG. 1, the 1+ N + N + N structural steel cord comprises a central layer A001, an intermediate layer A010 and an outer layer A100, wherein the central layer A001 is a steel wire with the diameter of 1 plus N and the diameter of 2, the diameter 1 > the diameter 2 when N is more than or equal to 6, and the diameter 1 > the diameter 2 when N is more than or equal to 4 and less than 6. After adopting above-mentioned structure, guaranteed the appropriate clearance of steel wire, the structure is more open, improves rubber infiltration ability. In the intermediate layer a 010N steel wires with a diameter of 3 are wound around the central layer a001 and in the outer layer a 100N steel wires with a diameter of 4 are wound around the intermediate layer a 010; the gaps D1 between adjacent wires of the same layer in the central layer are not less than 20 μm, and the gaps D2 and D3 between adjacent wires of the same layer in the intermediate layer and the outer layer are not less than 25 μm; wherein, 1+ N in the central layer A001, N is 4-8; the middle layer A010 has 5-13N; the outer layer A is 100, and N is 6-18.
Further, the diameters 1 and 2 of the steel wires of the central layer A001 are 75% -170% of the diameter 3 of the steel wire of the middle layer A010, and the diameter 4 of the steel wire of the outer layer is 75% -170% of the diameter 3 of the steel wire of the middle layer.
Furthermore, the central layer A001, the middle layer A010 and the outer layer A100 are twisted in the same direction of S/S/S or Z/Z/Z.
Furthermore, the lay length of the central layer A001 is 30% -83% of that of the middle layer A010, and the lay length of the middle layer A010 is 30% -83% of that of the outer layer A100.
By adopting the steel cord with the structure, the proper gap between the steel wires is ensured, and the closed gap is eliminated; in addition, the steel cord has an open structure, so that the penetration of rubber is ensured, the fatigue life of the cord is prolonged, the adhesive force is improved, and the excellent performance of the steel cord is ensured.
As an embodiment, the strength grade of the steel cord is NT, HT, SHT, ST, UT, MT.
In one embodiment, the steel wire has a Cu content of 58 to 74% and a Zn content of 26 to 42%. In actual use, the ternary alloy coating containing cobalt can be provided according to the needs of users.
In one embodiment, the steel wire is selected from a cord with a C content of 0.66-1.20% or a cord with a C content of 0.20-0.65%.
As an embodiment, if the steel cord with outer winding is needed, the diameter of the outer winding is 0.15-0.25 mm, the twisting direction is opposite to the twisting direction of the outermost cord, and the structural formula is as follows: 1+ N + W.
The invention also provides a radial tire, which uses the 1+ N + N + N structural steel cord to reinforce the high-permeation rubber performance of the framework material.
Examples
This example provides a 1+ N structural steel cord, the cross-sectional structure of which is shown in fig. 2, and the specific parameters of which are shown in table 1.
| |
0.23+6×0.20+11×0.205+11×0.35ST |
| Cord diameter + -5% mm | 1.75 |
| Direction of twist | S/S/S(Z/Z/Z) |
| Type of construction | Line contact |
| Lay length + -5% mm | 10/17/20 |
| Minimum breaking force/N | 4900 |
| Linear density. + -. 5% g/m | 13.69 |
TABLE 1
In the embodiment, on the basis of the original electroplating process, copper-plated steel wires with the tensile strength of 1350 +/-50 MP are selected, the compression ratio of a wet drawing die chain is more than or equal to 95 percent, and cords are produced in DTU/DTS/DTA production core wires and DTA/XD-16/GGZ 18. If the customer needs the steel cord with the outer winding, the outer winding is wound on an MV2 outer winding machine, and the twisting direction of the outer winding is opposite to that of the outermost cord.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A 1+ N structural steel cord comprising a central layer, an intermediate layer and an outer layer, characterized in that said central layer is composed of one steel wire of diameter 1 plus N steel wires of diameter 2, in said intermediate layer N steel wires of diameter 3 are wound around the central layer, in said outer layer N steel wires of diameter 4 are wound around the intermediate layer; the gaps between the adjacent wires in the same layer in the central layer are not less than 20 μm, and the gaps between the adjacent wires in the same layer in the intermediate layer and the outer layer are not less than 25 μm.
2. The 1+ N structural steel cord as claimed in claim 1, wherein the central layer steel wire diameter 1, 2 is 75% to 170% of the intermediate layer steel wire diameter 3, and the outer layer steel wire diameter 4 is 75% to 170% of the intermediate layer steel wire diameter 3.
3. 1+ N structural steel cord according to claim 1, characterised in that said central layer, intermediate layer and outer layer are co-twisted S/S or Z/Z.
4. The 1+ N structural steel cord according to claim 1, wherein the center layer lay length is 30 to 83% of the intermediate layer lay length, and the intermediate layer lay length is 30 to 83% of the outer layer lay length.
5. The 1+ N structural steel cord as claimed in claim 1, wherein said central layer comprises 1+ N steel wires, N being 4 to 8; the middle layer comprises N steel wires, and N is 5-13; the outer layer comprises N steel wires, and N is 6-18.
6. A1 + N + N + N structural steel cord according to claim 5, characterised in that said central layer consists of one steel wire with diameter 1 plus N wires with diameter 2, diameter 1 > diameter 2 when N > 6.
7. The 1+ N + N + N structural steel cord as set forth in claim 1, wherein the steel wire has a Cu content of 58 to 74% and a Zn content of 26 to 42%.
8. The 1+ N + N + N structural steel cord as set forth in claim 1, wherein the steel wire is selected from a cord having a C content of 0.66-1.20% or a cord having a C content of 0.20-0.65%.
9. The 1+ N structural steel cord as claimed in claim 1, wherein if the steel cord is required to have an outer winding, the diameter of the outer winding is 0.15 to 0.25mm, and the twist direction is opposite to the twist direction of the outermost cord.
10. A radial tire characterized by using the steel cord of any one of claims 1 to 9 for reinforcing the high bleed performance of a carcass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258566.3A CN110904551A (en) | 2019-12-10 | 2019-12-10 | 1+ N + N + N structural steel cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911258566.3A CN110904551A (en) | 2019-12-10 | 2019-12-10 | 1+ N + N + N structural steel cord |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110904551A true CN110904551A (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911258566.3A Pending CN110904551A (en) | 2019-12-10 | 2019-12-10 | 1+ N + N + N structural steel cord |
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| CN (1) | CN110904551A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497526A (en) * | 2020-04-16 | 2020-08-07 | 江苏通用科技股份有限公司 | Carcass structure of load-carrying radial tire |
| CN112779797A (en) * | 2021-01-15 | 2021-05-11 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06146182A (en) * | 1992-11-02 | 1994-05-27 | Sumitomo Rubber Ind Ltd | Steel cord |
| CN104372485A (en) * | 2014-11-11 | 2015-02-25 | 张家港市骏马钢帘线有限公司 | Steel cord for all-steel truck radical tire body and manufacturing technology of all-steel cord |
| CN204401211U (en) * | 2014-11-11 | 2015-06-17 | 张家港市骏马钢帘线有限公司 | Load radial tire belt all-steel cord |
| WO2015193099A1 (en) * | 2014-06-18 | 2015-12-23 | Nv Bekaert Sa | A 4+9+14 Steel Cord |
| CN107190540A (en) * | 2017-06-21 | 2017-09-22 | 盛利维尔（中国）新材料技术股份有限公司 | A kind of load-carrying tire carcass steel cord with 2+6+12 structures |
| CN207091804U (en) * | 2017-06-21 | 2018-03-13 | 盛利维尔（中国）新材料技术股份有限公司 | A kind of load-carrying tire carcass steel cord with 2+6+12 structures |
| CN209652636U (en) * | 2018-11-10 | 2019-11-19 | 江苏兴达钢帘线股份有限公司 | A kind of high fatigue durability steel cord |
| CN212103153U (en) * | 2019-12-10 | 2020-12-08 | 江苏兴达钢帘线股份有限公司 | 1+ N + N + N structural steel cord |
-
2019
- 2019-12-10 CN CN201911258566.3A patent/CN110904551A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06146182A (en) * | 1992-11-02 | 1994-05-27 | Sumitomo Rubber Ind Ltd | Steel cord |
| WO2015193099A1 (en) * | 2014-06-18 | 2015-12-23 | Nv Bekaert Sa | A 4+9+14 Steel Cord |
| CN104372485A (en) * | 2014-11-11 | 2015-02-25 | 张家港市骏马钢帘线有限公司 | Steel cord for all-steel truck radical tire body and manufacturing technology of all-steel cord |
| CN204401211U (en) * | 2014-11-11 | 2015-06-17 | 张家港市骏马钢帘线有限公司 | Load radial tire belt all-steel cord |
| CN107190540A (en) * | 2017-06-21 | 2017-09-22 | 盛利维尔（中国）新材料技术股份有限公司 | A kind of load-carrying tire carcass steel cord with 2+6+12 structures |
| CN207091804U (en) * | 2017-06-21 | 2018-03-13 | 盛利维尔（中国）新材料技术股份有限公司 | A kind of load-carrying tire carcass steel cord with 2+6+12 structures |
| CN209652636U (en) * | 2018-11-10 | 2019-11-19 | 江苏兴达钢帘线股份有限公司 | A kind of high fatigue durability steel cord |
| CN212103153U (en) * | 2019-12-10 | 2020-12-08 | 江苏兴达钢帘线股份有限公司 | 1+ N + N + N structural steel cord |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497526A (en) * | 2020-04-16 | 2020-08-07 | 江苏通用科技股份有限公司 | Carcass structure of load-carrying radial tire |
| CN112779797A (en) * | 2021-01-15 | 2021-05-11 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
| WO2022151623A1 (en) * | 2021-01-15 | 2022-07-21 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
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