CN207295321U

CN207295321U - It is a kind of（2+4）The high strength steel cord of structure

Info

Publication number: CN207295321U
Application number: CN201720075578.2U
Authority: CN
Inventors: 焦小鹏; 赵年鹏; 赵存军; 潘振国
Original assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Current assignee: Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2018-05-01
Anticipated expiration: 2027-01-19

Abstract

The utility model proposes one kind（2+4）The high strength steel cord of structure includes the cored wire that two cored wire steel wires of the rectangular arrangement of internal layer are formed, and four uneven cover wires being arranged in around cored wire carry out volume sth. made by twisting around two cored wire steel wires, and the section of the steel cord of formation is ellipse；The cored wire steel wire of the internal layer is identical with the diameter of cover wire and twist direction is twisted with the fingers for S；The tensile strength of cored wire steel wire and cover wire is more than 3600Mpa, and the cored wire steel wire of internal layer and the diameter of cover wire are 0.27mm, and it is 16.0mm that cored wire and the cover wire of internal layer, which compile the lay pitch twisted with the fingers,.The high strength steel cord, using the less high-tensile steel wires of diameter as cored wire and cover wire line, the weight of belt in mitigation, reduces the production cost of tire, meets the light-weighted requirement of tire, reduces the dosage of steel wire in production to save cost.

Description

A kind of high strength steel cord of (2+4) structure

Technical field

Steel cord for tire technical field is the utility model is related to, more particularly to a kind of high strength steel curtain of (2+4) structure Line.

Background technology

In the modern life and production, people are increasing to the demand of automobile industry, this has just driven the fast of tire industry Speed development, also proposes increasingly higher demands to tire enterprise, continually develops high-performance, the tire product of low cost is the general trend of events Become.Main stressed member of the belt as radial, bears the load of tire about 60%.As tire steel curtain Line, not only will can make tire possess the performances such as excellent impact resistance, puncture-resistant, in addition also to consider the production of steel cord in itself The cost of cost and tire；The weight of tire is also reduced as far as possible, reduce the fuel consumption of vehicle.Based on this, using diameter compared with Carefully, the extra-high strength wire of intensity higher carries out the development of steel cord just into a trend of steel cord development.

Utility model content

For the demand in existing use, the purpose of this utility model is to provide a kind of the high-strength of (2+4 × 0.27) structure Steel cord is spent, it can meet the performance requirement of tire steel cord, can also make tire lightweight, reduce production cost and oil consumption Amount.

To reach the purpose of this utility model, the high strength steel cord of one kind (2+4) structure of the utility model is including interior The cored wire that two superhigh intensity cored wire steel wires of the rectangular arrangement of layer are formed, the superelevation that four uneven to be arranged in around cored wire are strong Degree cover wire carries out volume sth. made by twisting around two cored wire steel wires, and the section of the steel cord of formation is ellipse；The cored wire of the internal layer Steel wire is identical with the diameter of cover wire and twist direction is twisted with the fingers for S；The cored wire steel wire and cover wire diameter of internal layer are 0.27mm, It is 16.0mm that the cored wire of internal layer compiles the lay pitch twisted with the fingers with cover wire.

The beneficial effects of the utility model are the high strength steel cords, using the less extra-high strength wire of diameter As cored wire and cover wire line, the weight of belt in mitigation, reduces the production cost of tire, meets that tire is light-weighted and want Ask, reduce the dosage of steel wire in production to save cost.

Brief description of the drawings

By detailed description below in conjunction with the accompanying drawings, the utility model is foregoing to incite somebody to action with other objects, features and advantages Become apparent.Wherein：

Fig. 1 is the structure diagram of the high strength steel cord of one kind (2+4 × 0.27) structure of the utility model；

Fig. 2 show the lay pitch schematic diagram of the steel cord of Fig. 1.

Embodiment

With reference to shown in Fig. 1, the high strength steel cord of (2+4 × 0.27) structure of the utility model includes the rectangular row of internal layer The cored wire that two cored wire steel wires 10 of row are formed, four uneven cover wires 20 being arranged in around cored wire surround two cored wires Steel wire carries out volume sth. made by twisting, and the section of the steel cord of formation is ellipse；The cored wire steel wire 10 of the internal layer and cover wire 20 it is straight Footpath is identical and twist direction is twisted with the fingers for S；The cored wire steel wire and cover wire diameter of internal layer are 0.27mm.Cored wire steel wire and cover wire are equal Using according to newest《Radial steel cord》Unimach as defined in national standard (GB/ T_11181-2016) Silk, it improves 20% or so than the intensity of steel wire of the regular tenacity of same diameter.

When steel cord carries out twisting, due to the use of the unimach silk cord of small diameter, therefore, during twisting The lay pitch, the twist direction of different layers steel cord etc. is required for being redesigned accordingly.The lay pitch is big, and productivity is high, but fatigue durability It can decline, this is because when the lay pitch is bigger, the torsional deflection degree of cord monofilament in twisting is with regard to smaller, its elastic restoring force It is larger, it if this elastic restoring force cannot eliminate, can decline the fatigue performance of cord, service life shortens；The lay pitch Small, the fatigue performance of steel cord improves, and elongation is high, but the spinning loss of intensity is big, and productivity also reduces.So according to not It is the importance in steel cord R＆D process to carry out rational lay pitch design with the all-steel cord of intensity and different steel wire diameters Can parameter.In a preferred embodiment of the utility model, cored wire and the cover wire of the internal layer compile the lay pitch twisted with the fingers and are 16.0mm.In addition, the cross sectional shape of arrangement, that is, internal layer cord and outer layer cord of the steel cord in twisting is for its strike-through Performance has important influence, and important Consideration.

The high strength steel cord of (2+4 × 0.27) structure of the utility model is compiled sth. made by twisting by six roots of sensation extra-high strength wire and is formed, Internal layer cored wire and outer layer upper thread all use same diameter steel wire, and four cover wires not exclusively wrap two middle cored wire steel wires Wrap up in, leave more gaps, easy to the infiltration of rubber, be conducive to improve the bonding force between rubber and steel cord, so as to avoid Cause corrosion because moisture enters inside steel cord.It also has the superior functions such as preferable impact resistance, puncture-resistant.

The diameter of the high strength steel cord of (2+4 × 0.27) structure of the utility model, cored wire steel wire and cover wire is not The weight of suitable too small, the too small intensity that can influence steel cord of diameter, the too big thickness that can increase cord again of diameter and then increase tire Amount, therefore a diameter of 0.27mm of the wire of steel wire tire cord of the steel cord of the utility model selection；In addition, the lay pitch should not also select it is too small, Otherwise the strike-through performance of cord can be influenced, the lay pitch of the steel cord of the utility model is 16mm, it is appropriate increase the lay pitch, that is, monofilament it Between gap it is larger, be conducive to improve cord strike-through performance, improve intensity.

The steel cord of (2+4 × 0.27ST) structure of the utility model and the steel cord of current (2+4 × 0.22 HT) Performance parameter is compared as follows：

Project	2+4×0.27ST	2+4×0.22HT
			Cord diameter (± 5%)/mm	0.840	0.680
Twist direction	S	S
			The lay pitch (± 5%)/mm	16.0	14.0
Minimum Fracture Force/N	1058	655
			Line density (± 5%)/g/m	2.710	1.810

As can be seen from the table, compared with the steel cord of (2+4 × 0.22HT), the steel cord minimum Fracture Force of the utility model Increase significantly；The strike-through performance of cord is also improved using the larger lay pitch.

The utility model is not limited to the embodiment described, and those skilled in the art is not departing from the utility model Spirit is in the open scope, still be may make some modifications or changes, therefore the rights protection scope of the utility model is with claims Subject to the scope of restriction.

Claims

1. a kind of high strength steel cord of (2+4) structure, it is characterised in that the steel cord includes the two of the rectangular arrangement of internal layer The cored wire that root superhigh intensity cored wire steel wire is formed, four uneven superhigh intensity cover wires being arranged in around cored wire surround two Root cored wire steel wire carries out volume sth. made by twisting, and the section of the steel cord of formation is ellipse；The cored wire steel wire of the internal layer and cover wire Diameter is identical and twist direction is twisted with the fingers for S；The cored wire steel wire and cover wire diameter of internal layer are 0.27mm, cored wire and the outer layer steel of internal layer It is 16.0mm that silk, which compiles the lay pitch twisted with the fingers,.