17-strand radial tire steel cord
A technology of steel cords and steel wires, applied in the field of 17-strand radial tire steel cords, which can solve the problems of ineffective penetration of rubber, small gaps, and high air content in cords, so as to increase service life, improve corrosion resistance, and avoid failure Effect
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[0026] Example 1:
[0027] In this embodiment, the diameters of the core strand 1 steel wire, the middle layer strand 2 steel wire and the outer layer strand 3 steel wire are all 0.20 mm, such as figure 1 shown. The lay length of the middle layer strand 2 steel wire braiding is 10.0mm, and the outer layer strand 3 wire wire laying pitch is 16.0mm, that is, the lay length of the middle layer strand 2 steel wire braiding is the same as that of the outer layer strand 3 steel wire braiding. 0.625 times. The core strand 1 steel wire is not twisted, and the middle layer strand 2 steel wire and the outer layer strand 3 steel wire adopt the same twist direction, both of which are Z twist. The steel cord 7+10×0.20ST structure of this embodiment is used for radial tires.
[0028] Table 1 is the performance index comparison table of the 0.22+6+12×0.20HT structure steel cord commonly used in radial tires in the prior art and the first embodiment of the present invention:
[0029] Tab...
Example Embodiment
[0033] Embodiment 2:
[0034] In this embodiment, the diameter of the core strand 1 steel wire, the middle layer strand 2 steel wire and the outer layer strand 3 steel wire are all 0.225mm, such as image 3 shown. The twist length of the middle layer of ﹙2﹚ steel wire is 12.5mm, and the lay of the outer layer of 3 steel wire is 18.0mm, that is, the twist of the middle layer of 2 steel wire is the same as the outer layer of 3 steel wire. 0.695 times the distance. The core strand 1 steel wire is not twisted, the middle layer strand 2 steel wire and the outer layer strand 3 steel wire adopt the same twist direction, all of which are Z twist. The steel cord 7+10×0.225ST structure of this embodiment is used for radial tires.
[0035] Table 2 is the performance index comparison table of the 3+9+15×0.225HT structure steel cord commonly used in radial tires in the prior art and the second embodiment of the present invention:
[0036] Table 2
[0037]
[0038] Figure 4It is a...
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