CN113969511A - High-permeability-rubber intensive steel cord - Google Patents
High-permeability-rubber intensive steel cord Download PDFInfo
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- CN113969511A CN113969511A CN202111357834.4A CN202111357834A CN113969511A CN 113969511 A CN113969511 A CN 113969511A CN 202111357834 A CN202111357834 A CN 202111357834A CN 113969511 A CN113969511 A CN 113969511A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 91
- 239000010959 steel Substances 0.000 title claims abstract description 91
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000010073 coating (rubber) Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration 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
- 238000011056 performance test Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 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
-
- 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
-
- 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
- D07B2201/2009—Wires or filaments characterised by the materials used
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/208—Enabling filler penetration
Landscapes
- Ropes Or Cables (AREA)
Abstract
The invention provides a high-permeability-rubber dense steel cord, and belongs to the technical field of steel cords. The technical scheme is as follows: a high-permeability-rubber-density steel cord is characterized in that the steel cord is formed by alternately and continuously twisting n layers of cord segments and n +1 layers of cord segments, wherein n is greater than 1 and is an integer. The invention has the beneficial effects that: the coating rate and the adhesive property of the steel cord can be improved.
Description
Technical Field
The invention relates to the technical field of steel cords, in particular to a high-permeability-rubber intensive steel cord.
Background
With the development of the global automobile industry and highways, radial tires are rapidly developing. The steel cord is used as a main framework material of the radial tire, accounts for about 20% of the mass of the tire, and the fatigue performance of the steel cord and the adhesive property between the steel cord and rubber can be effectively improved by reasonably selecting the steel cord product, so that the effective service life of the tire is prolonged. When the diameter of a single filament of the steel cord disclosed in the market is determined, the rubber permeation performance of the steel cord is basically equivalent, and the adhesive performance of a steel cord product and rubber cannot be enhanced in the true sense.
Disclosure of Invention
The invention aims to provide a high-bleeding-density steel cord capable of improving the bleeding performance and the adhesive performance of the steel cord.
The invention is realized by the following measures: a high-permeability-rubber-density steel cord is characterized in that the steel cord is formed by alternately and continuously twisting n layers of cord segments and n +1 layers of cord segments, wherein n is greater than 1 and is an integer.
Furthermore, the outmost steel wire number of the n layers of cord segments and the n +1 layers of cord segments is consistent, and the inner steel wire number of the n +1 layers of cord segments is 1.
Further, the steel cord is made up of two layers of cord segments and three layers of cord segments alternately and continuously twisted, i.e., the steel cord is sometimes made up of two layers, sometimes three layers.
Further, the outer layers of the three-layer curtain line segments and the two-layer curtain line segments are 10 steel wires, the middle layer of the three-layer curtain line segments is 5 steel wires, and the inner layer of the two-layer curtain line segments is 6 steel wires. The three ply cord segments constitute a (1 +5+ 10) structure and the two ply cord segments constitute a (6+10) structure. The (6+10) structure and the (1 +5+ 10) structure form periodic alternate twisting, the alternate twisting position of the structure is a large glue seepage port and a steel wire fixing node, and the steel cord can make up the defects of the steel cord in the prior art, improve the adhesive property of the steel cord and rubber and prolong the service life of the tire;
furthermore, the steel wires of the cross section of the middle layer of the three-layer curtain line segment are distributed in a regular pentagon shape, and the middle layer is distributed around 1 core wire of the inner layer.
Furthermore, the steel wires of the inner layer cross section and the outer layer cross section of the two layers of curtain line segments are all equal-edge parts, and the outer layer of the cross section is wrapped on the inner layer in a semi-wrapping shape.
Further, the length of the n layers of curtain line segments is the same as that of the n +1 layers of curtain line segments.
Further, the length of the n layers of curtain line segments is the same as that of the n +1 layers of curtain line segments and is 0.5m-1.5 m. The lengths of the n layers of curtain line segments and the n +1 layers of curtain line segments are the same, and the lengths are preferably consistent, so that the later-stage processing is facilitated.
Further, the length of the n layers of curtain line segments is the same as that of the n +1 layers of curtain line segments.
Furthermore, the outer diameters of the n layers of curtain line segments and the n +1 layers of curtain line segments are basically consistent, and the maximum error of the outer diameters is not more than 0.002 mm.
Furthermore, the steel cord is twisted in the Z direction by n layers of cord segments and n +1 layers of cord segments.
Further, a tire comprising the high-permeability rubber-dense steel cord as described above.
Compared with the prior art, the invention has the beneficial effects that: the steel cord in this application adopts n layer curtain line section and n +1 layer curtain line section to twist in turn and twist in succession and make for the exchange of n layer curtain line section and n +1 layer curtain line section is twisted the department and is oozed the jiao kou greatly, the infiltration of steel wire and rubber at the in-process sizing material of vulcanizing of being convenient for has increased substantially the rubber permeation rate and the rubber coating rate of steel cord, the improvement of steel cord rubber permeation rate and rubber coating rate has improved the adhesive property of steel cord and rubber, life has been prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a three-layer shade of the present invention.
FIG. 2 is a schematic cross-sectional structural view of a two-ply cord segment of the present invention.
Fig. 3 is experimental data.
Wherein the reference numerals are: 1. three layers of inner layers of cord segments; 2. a middle layer of three layers of cord thread segments; 3. three layers of outer layers of cord segments; 4. two layers of inner layers of cord thread segments; 5. two layers of cord segment outer layers.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
The first embodiment is as follows:
referring to fig. 1-2, a high-permeability-rubber-density steel cord, which is made of n cord segments and n +1 cord segments alternately and continuously twisted, n being greater than 1 and an integer.
The number of the steel wires at the outermost layers of the n layers of cord line segments and the n +1 layers of cord line segments is consistent, and the number of the steel wires at the inner layers of the n +1 layers of cord line segments is 1.
Except that the number of steel wires in the inner layer of the n +1 layer of cord thread section is 1, the other layers of the n +1 layer of cord thread section and the n layer of cord thread section all adopt a plurality of steel wires, the number of the steel wires increases progressively from the center to the outside, and the cross section of the steel wires is distributed in an equilateral shape.
Example two:
referring to fig. 1-2, the steel cord is made up of two layers of cord segments and three layers of cord segments, alternately and continuously twisted, i.e. the steel cord sometimes consists of two layers and sometimes consists of three layers.
The outer layer 3 of the three-layer cord segment and the outer layer 5 of the two-layer cord segment are both 10 steel wires, the middle layer 2 of the three-layer cord segment is 5 steel wires, and the inner layer 4 of the two-layer cord segment is 6 steel wires. The three layers of cord segments constitute a (1 +5+ 10) structure and the two layers of cord segments constitute a (6+10) structure. The (6+10) structure and the (1 +5+ 10) structure are periodically alternately twisted, the positions of the structure exchange twisting are large glue seeping openings and steel wire fixing nodes, and the steel cord can make up the defects of the steel cord in the prior art, improve the adhesive property of the steel cord and rubber and prolong the service life of the tire.
The steel wires of the cross section of the middle layer 2 of the three-layer cord thread section are distributed in a regular pentagon shape, and the middle layer 2 of the three-layer cord thread section is distributed around 1 core wire of the inner layer 1 of the three-layer cord thread section.
The cross section of the inner layer 4 of the two-layer cord thread section and the cross section of the outer layer are equal-edge-shaped parts, and the outer layer of the cross section is wrapped in a semi-wrapping shape.
The length of the second layer of curtain line segment is the same as that of the third layer of curtain line segment. The length of the second layer curtain line segment is the same as that of the third layer curtain line segment and is 0.5m-1.5 m. The lengths of the n layers of curtain line segments and the n +1 layers of curtain line segments are the same, and the lengths are preferably consistent, so that the later-stage processing is convenient
Example three:
referring to fig. 1-2, on the basis of the first embodiment:
the length of the n layers of curtain line segments is the same as that of the n +1 layers of curtain line segments.
The length of the n layers of curtain line segments is the same as that of the n +1 layers of curtain line segments and is 0.5m-1.5 m. The lengths of the n layers of curtain line segments and the n +1 layers of curtain line segments are the same, and the lengths are preferably consistent, so that the later-stage processing is facilitated.
Example four:
referring to fig. 1-2, on the basis of the first embodiment or the second embodiment or the third embodiment:
the outer diameters of the n layers of curtain line segments and the n +1 layers of curtain line segments are basically consistent, and the maximum error of the outer diameters is not more than 0.002 mm.
Example five:
a tire comprises a high-permeation-rubber dense steel curtain in an application example or an example II or an example III or an example IV or an example V.
Example six:
referring to fig. 1 to 3, a comparative experiment was performed on several sets of (6+10) cord segments and (1 +5+ 10) cord segments alternately and continuously twisted steel cords with the prior art, which selected the steel cords of (1 +6+ 12) structure and the steel cords of (1 +5+ 10) structure.
Selecting a sample: selecting a steel cord with the alternating length of 1m according to the cutting length of a customer cord fabric, wherein the cord fabric made of the steel cord with the specification is mainly used for a tire body, a straight cutting process is adopted, and the meter number is set to simultaneously comprise a (6+10) cord segment and a (1 +5+ 10) cord segment, wherein the length ratio of the (6+10) cord segment to the (1 +5+ 10) cord segment is 1: 1.
and selecting a steel cord with almost the same specification in the prior art according to the specification of the sample of the product to sample.
The product sample and the prior art sample are respectively subjected to breaking force, adhesive property and air pressure drop (glue permeation rate test), the sample and the result selected in the specific test are shown in figure 3, and the data in the table are average values obtained by multiple experiments of different samples under the same parameters:
wherein 0.175/0 in the figure indicates that the monofilament diameter of the inner layer in the (1 +5+ 10) section is 0.175, and there is no corresponding layer in the (6+10) section;
in the figure, 0.215/(0.175 for any one) indicates that the five steel wires in the middle layer of the (1 +5+ 10) stage are all 0.215, and the steel wire diameters in the inner layer of the (6+10) stage are 1.75 for 1 and 0.235 for the other five (the middle layer in the table is consistent with the expression of the inner layer of the (6+10) stage).
Breaking force experiment: three types of steel cord samples are selected to be subjected to multiple breaking force detection experiments, and the length of each experiment sample is 1 m.
Adhesion performance test: three types of steel cord samples are selected, 5 sections (for example, a samples are a1, a2, a3, a4 and a5 respectively) are melted for each sample, the length of each sample is about 1m, the samples are ensured not to loose heads, and the selected samples are worn with gloves to prevent the samples from being polluted. It should be noted that when the 5-stage sample is subjected to a vulcanization test, the sample is in contact with the rubber (the embedded depth is 25 mm), and the arrangement order of the sample in the mold requires reference to the test method.
③ testing the glue permeability: three types of steel cord samples are selected, and 3 samples with the length of about 300mm are cut from each sample.
In the experiment, the breaking tension experiment refers to a steel cord test method GB/T33159-2016 and an experimental equipment INSTRON3365 tension machine; the adhesive property test refers to a steel cord test method GB/T33159-2016, and experimental equipment such as an open rubber mixing mill, a plate vulcanizing machine and an INSTRON3365 tensile machine; the experimental method refers to the air pressure drop machine operation manual, and the experimental equipment is an air pressure drop machine.
From the experimental data in the table, it can be known that the coating rate, the air pressure drop and the adhesive force of the present application are all better than those of the prior art, and the breaking force is also slightly greater than that of the prior art.
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, e.g. as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (10)
1. A high-permeability-rubber-density steel cord is characterized in that the steel cord is formed by alternately and continuously twisting n layers of cord segments and n +1 layers of cord segments, wherein n is greater than 1 and is an integer.
2. A high-permeability-rubber-dense steel cord as claimed in claim 1, wherein the n layers of said cord segments and the n +1 layers of said cord segments have the same total number of steel wires and the number of steel wires at the outermost layer is the same and the number of steel wires at the inner layer of said n +1 layers of said cord segments is 1.
3. A high-permeability-rubber-density steel cord according to claim 2, characterized in that said steel cord is made of two-ply cord segments and three-ply cord segments twisted alternately and continuously.
4. A high-permeability-rubber-density steel cord as claimed in claim 3, wherein the outer layers of the three-layer cord segment and the two-layer cord segment are each 10 steel wires, the middle layer of the three-layer cord segment is 5 steel wires, and the inner layer of the two-layer cord segment is 6 steel wires.
5. A high-permeability-rubber-density steel cord as claimed in claim 4, characterized in that the steel filaments of the cross section of the middle layer of said three-layer cord section are distributed in a regular pentagon.
6. A high-permeability-rubber-density steel cord as claimed in claim 4, characterized in that the steel filaments of the inner and outer layer cross-sections of said two-layer cord section are each of equilateral sections.
7. A high-permeability-rubber-dense steel cord as claimed in claim 1, characterized in that said n layers of cord segments and n +1 layers of cord segments are the same length.
8. A high-permeability-rubber-dense steel cord as claimed in claim 7, characterized in that said n layers of cord segments and n +1 layers of cord segments are the same length and are 0.5m-1.5 m.
9. A high-permeability-rubber-dense steel cord according to any one of claims 1 to 6, characterized in that the length of said n layers of cord segments and n +1 layers of cord segments are the same.
10. A tyre comprising a high-permeability-rubber-density steel cord according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111357834.4A CN113969511A (en) | 2021-11-16 | 2021-11-16 | High-permeability-rubber intensive steel cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111357834.4A CN113969511A (en) | 2021-11-16 | 2021-11-16 | High-permeability-rubber intensive steel cord |
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| Publication Number | Publication Date |
|---|---|
| CN113969511A true CN113969511A (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111357834.4A Pending CN113969511A (en) | 2021-11-16 | 2021-11-16 | High-permeability-rubber intensive steel cord |
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Application publication date: 20220125 |