CN214219191U - Compact polygonal steel cord - Google Patents
Compact polygonal steel cord Download PDFInfo
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- CN214219191U CN214219191U CN202022272978.7U CN202022272978U CN214219191U CN 214219191 U CN214219191 U CN 214219191U CN 202022272978 U CN202022272978 U CN 202022272978U CN 214219191 U CN214219191 U CN 214219191U
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Abstract
The utility model discloses an inseparable polygon steel cord, including a polygon core silk, the cross-section of polygon core silk is the pentagon structure, the circumscribed circle diameter of polygon core silk is D1, turn round around the polygon core silk to twist with the fingers and have with the same twist with the polygon core silk to many layers silk with the same lay length, layer silk includes intermediate layer silk and outer silk, the intermediate layer silk comprises five diameters for the intermediate level monofilament of D2, outer silk comprises ten diameters for the outer monofilament of D3, the circumscribed circle diameter D1 of polygon core silk, the diameter D2 of intermediate level monofilament and the diameter D3 of outer monofilament satisfy following relation: d1 is not less than D2 is not less than D3. The utility model provides an inseparable polygon steel cord all has the clearance between every monofilament, and rubber fully permeates through the clearance between the monofilament when vulcanizing and is embedded to every monofilament around, and rubber infiltration performance improves by a wide margin, has improved the adhesive force between steel cord and the rubber, has effectively improved the structural stability of steel cord.
Description
Technical Field
The utility model relates to a tire technical field especially relates to an inseparable polygon steel cord.
Background
The steel cord is the most widely applied framework material in rubber tire products, at present, the cross section of a core wire of the existing steel cord is of a circular structure, a plurality of monofilaments are wound together in the same twisting direction and with the same twisting pitch and different diameters, and the cross section of the core wire of the steel cord is large and can accommodate a plurality of monofilaments, so that the arrangement between the monofilaments and between layers is compact, and the rubber leakage performance and the air content are high in the vulcanization process because the twisting of the steel cord is compact.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is:
the existing steel cord has the disadvantages of tight arrangement between monofilaments and between layers, poor glue permeation performance in the vulcanization process and large air content.
The utility model provides a technical scheme that its technical problem adopted is:
a compact polygonal steel cord comprising a polygonal core filament having a cross-section of a pentagonal structure, the polygonal core filament having a circumscribed circle diameter of D1, the polygonal core filament being twisted around with a plurality of layer filaments having the same twist direction and the same twist pitch as the polygonal core filament, the layer filaments comprising intermediate layer filaments and outer layer filaments, the intermediate layer filaments being composed of five intermediate layer filaments having a diameter of D2, the outer layer filaments being composed of ten outer layer filaments having a diameter of D3, the circumscribed circle diameter D1 of the polygonal core filament, the diameter D2 of the intermediate layer filaments and the diameter D3 of the outer layer filaments satisfying the following relationships: d1 is not less than D2 is not less than D3.
Further, the circumscribed circle diameter D1 of the polygonal core wire ranges from 0.16mm to 0.20 mm.
Further, the circumscribed circle diameter D1 of the polygonal core filament and the diameter D2 of the intermediate layer monofilament satisfy the following relationship: D1/D2 is more than or equal to 0.70 and less than or equal to 0.80.
Further, the circumscribed circle diameter D1 of the polygonal core filament and the diameter D3 of the outer layer monofilament satisfy the following relationship: D1/D3 of which the ratio is more than or equal to 0.60 and less than or equal to 0.70.
Further, the diameter D1 of the circumscribed circle of the polygonal core filament is 0.16mm, the diameter D2 of the middle layer monofilament is 0.215mm, and the diameter D3 of the outer layer monofilament is 0.235 mm.
Further, the diameter D1 of the core filament is 0.20mm, the diameter D2 of the middle layer monofilament is 0.265mm, and the diameter D3 of the outer layer monofilament is 0.305mm
The utility model has the advantages that:
the utility model discloses a steel cord with compact structure of preparation, the heart yearn adopts circumscribed circle diameter to be D1's pentagon core silk, five root diameter D2's intermediate level monofilament arranges around pentagon core silk gappedly, ten root diameter D3's outer monofilament arranges around the intermediate level line gappedly, because the heart yearn adopts the pentagon core silk of circular inscription, the clearance between the intermediate level monofilament of steel cord enlarges, make rubber fully permeate the embedding to every steel cord monofilament around through the clearance between the monofilament when vulcanizing, rubber infiltration performance improves by a wide margin, the adhesive force between steel cord and the rubber has been improved effectively, and the structural stability of steel cord can effectively be improved to pentagon core silk prismatic structure.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of a compact polygonal steel cord of the present invention.
Detailed Description
As shown in fig. 1, a compact polygonal steel cord includes a polygonal core filament twisted with a plurality of layer filaments having the same twist direction and the same twist pitch as the core filament around the core filament, the layer filaments including a middle layer filament and an outer layer filament, the polygonal core filament having a circumscribed circle diameter of D1, the middle layer filament being composed of five middle layer filaments having a diameter of D2, and the outer layer filament being composed of ten outer layer filaments having a diameter of D3.
The section of the polygonal core wire is of a pentagonal structure, and the range of the circumscribed circle diameter D1 of the polygonal core wire is 0.16-0.20 mm; the circumscribed circle diameter D1 of the polygonal core filament, the diameter D2 of the intermediate layer monofilament and the diameter D3 of the outer layer monofilament satisfy the following relationship: d2 is not less than D3 and is not less than D1; the circumscribed circle diameter D1 of the polygonal core filament and the diameter D2 of the intermediate layer monofilament satisfy the following relationship: D1/D2 is more than or equal to 0.70 and less than or equal to 0.80; the circumscribed circle diameter D1 of the polygonal core filament and the diameter D3 of the outer layer monofilament satisfy the following relationship: D1/D3 of which the ratio is more than or equal to 0.60 and less than or equal to 0.70.
The compact polygonal steel cord comprises the following preparation steps:
(1) carrying out surface treatment on a wire rod with the carbon content of 0.70-0.95% and the diameter of 5.5mm, carrying out rough drawing, drawing to the diameter of 2.2-3.2mm, 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 1.0-1.8mm, (2) carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire in sequence, electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form a wet-drawn steel wire, (4) selecting one wet-drawn steel wire to be treated to form a polygonal core wire with the circumscribed circle diameter of D1, selecting five wet-drawn steel wires with the diameter of D2 as intermediate layer monofilaments, selecting ten wet-drawn steel wires with the diameter of D3 as outer layer monofilaments, twisting the wet-drawn steel wires with different diameters according to the structure of 1+5+10, stranding, forming a rope, and inspecting to form a compact polygonal steel cord.
Example 1
The compact polygonal steel cord of the embodiment comprises a pentagonal core wire with the diameter of an outer circumcircle of 0.16mm, a plurality of layer wires with the same twisting direction and the same twisting distance with the core wire are twisted around the core wire, each layer wire comprises a middle layer wire and an outer layer wire, the middle layer wire is composed of five middle layer monofilaments with the diameter of 0.215mm, and the outer layer wire is composed of ten outer layer monofilaments with the diameter of 0.235 mm.
The preparation method of the steel cord of the present embodiment includes the steps of:
(1) the method comprises the steps of (1) carrying out surface treatment on a wire rod with the carbon content of 0.70%, carrying out rough drawing, drawing to the diameter of 2.0mm, carrying out normalizing treatment to remove work hardening, carrying out middle drawing to obtain a dry-drawn steel wire with the diameter of 1.0mm, (2) carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire in sequence, and electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form a wet-drawn steel wire, (4) selecting one wet-drawn steel wire to form a polygonal core wire with the circumscribed circle diameter of 0.16mm through treatment, selecting five wet-drawn steel wires with the diameter of 0.215mm as middle layer monofilaments, selecting ten wet-drawn steel wires with the diameter of 0.235mm as outer layer monofilaments, twisting the wet-drawn steel wires with different diameters according to the structure of 1+5+10, stranding, forming a rope, and inspecting to form a compact polygonal steel cord.
Example 2
The compact polygonal steel cord of the present embodiment includes a core filament having a diameter of 0.20mm, a plurality of layer filaments twisted around the core filament in the same twist direction and the same twist pitch as the core filament, the layer filaments including a middle layer filament and an outer layer filament, the middle layer filament being composed of five middle layer filaments having a diameter of 0.265mm, and the outer layer filament being composed of ten outer layer filaments having a diameter of 0.305 mm.
The preparation method of the steel cord of the present embodiment includes the steps of:
(1) the method comprises the steps of (1) carrying out surface treatment on a wire rod with the carbon content of 0.95%, carrying out rough drawing, drawing to the diameter of 3.2mm, carrying out normalizing treatment to remove work hardening, carrying out middle drawing to obtain a dry-drawn steel wire with the diameter of 1.8mm, (2) carrying out lead bath isothermal quenching treatment on the dry-drawn steel wire in sequence, and electroplating brass to obtain a brass-plated steel wire, (3) carrying out wet drawing on the brass-plated steel wire to form a wet-drawn steel wire, (4) selecting one wet-drawn steel wire to form a polygonal core wire with the circumscribed circle diameter of 0.20mm through treatment, selecting five wet-drawn steel wires with the diameter of 0.265mm as middle layer monofilaments, selecting ten wet-drawn steel wires with the diameter of 0.305mm as outer layer monofilaments, twisting the wet-drawn steel wires with different diameters according to the structure of 1+5+10, stranding, forming a rope, and inspecting to form a compact polygonal steel cord.
Comparative example
Comparative example is a commercial round construction of a compact steel cord.
Examples of the experiments
The steel cords of examples 1 and 2 and the steel cord of comparative example were measured for the coating ratio based on the "adhesion property test method" of the steel cord test method (GB/T33159-2016).
The steel cords prepared in examples 1 and 2 and the steel cord prepared in comparative example were tested and compared by experiment, and the test data are as shown in table 1:
table 1: data comparison table of steel cords of examples 1 and 2 and steel cord of comparative example
As can be seen from Table 1, the steel cord of the utility model is compared with the steel cord of the comparative example in the embodiments 1 and 2, there is a clearance between every monofilament of the steel cord of the embodiments 1 and 2, so that the rubber can be fully infiltrated and embedded around every steel cord monofilament through the clearance between the monofilaments when being vulcanized, the rubber coating rate reaches 90%, the rubber infiltration performance is greatly improved, and the adhesive force between the steel cord and the rubber is effectively improved. Moreover, the pentagonal core wire prismatic structure can effectively improve the structural stability of the steel cord.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. 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 (6)
1. The compact polygonal steel cord comprises a polygonal core wire, the cross section of the polygonal core wire is of a pentagonal structure, the diameter of an excircle of the polygonal core wire is D1, a plurality of layer wires which are the same in twisting direction and the same in twisting distance with the polygonal core wire are twisted around the polygonal core wire, each layer wire comprises an intermediate layer wire and an outer layer wire, the intermediate layer wire is composed of five intermediate layer monofilaments with the diameter of D2, the outer layer wire is composed of ten outer layer monofilaments with the diameter of D3, the diameter of the excircle of the polygonal core wire D1, the diameter of the intermediate layer monofilaments D2 and the diameter of the outer layer monofilaments D3 meet the following relations: d1 is not less than D2 is not less than D3.
2. A tight polygonal steel cord according to claim 1, characterized in that the circumscribed circle diameter D1 of said polygonal core wire is in the range of 0.16-0.20 mm.
3. A tight polygonal steel cord according to claim 1, characterized in that the circumscribed circle diameter D1 of said polygonal core filament and the diameter D2 of said intermediate layer monofilament satisfy the following relation: D1/D2 is more than or equal to 0.70 and less than or equal to 0.80.
4. A compact polygonal steel cord according to claim 1, characterized in that the circumscribed circle diameter D1 of said polygonal core filament and the diameter D3 of said outer layer filaments satisfy the following relation: D1/D3 of which the ratio is more than or equal to 0.60 and less than or equal to 0.70.
5. A tight polygonal steel cord according to claim 1, characterized in that the diameter D1 of the circumcircle of said polygonal core filaments is 0.16mm, the diameter D2 of said intermediate layer filaments is 0.215mm and the diameter D3 of said outer layer filaments is 0.235 mm.
6. A compact polygonal steel cord according to claim 1, characterized in that the diameter D1 of the core filaments is 0.20mm, the diameter D2 of the middle layer filaments is 0.265mm and the diameter D3 of the outer layer filaments is 0.305 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022272978.7U CN214219191U (en) | 2020-10-13 | 2020-10-13 | Compact polygonal steel cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022272978.7U CN214219191U (en) | 2020-10-13 | 2020-10-13 | Compact polygonal steel cord |
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| Publication Number | Publication Date |
|---|---|
| CN214219191U true CN214219191U (en) | 2021-09-17 |
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| CN202022272978.7U Active CN214219191U (en) | 2020-10-13 | 2020-10-13 | Compact polygonal steel cord |
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| CN (1) | CN214219191U (en) |
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