CN212541927U

CN212541927U - High-strength wire

Info

Publication number: CN212541927U
Application number: CN201922410102.1U
Authority: CN
Inventors: 傅文汇; 李章刚
Original assignee: Aptiv Electric System Co ltd
Current assignee: Aptiv Electric System Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2021-02-12
Anticipated expiration: 2029-12-28

Abstract

The utility model relates to a high strength wire, including insulating layer and the heart yearn that connects gradually, the insulating layer wraps up the heart yearn, the heart yearn includes the conductor and the 0.9-carbon steel wire of mutual contact, 0.9-carbon steel wire surface coating anti-corrosion coating. Compared with the prior art, the strength is higher, and the impact resistance can be ensured while the strength is improved.

Description

High-strength wire

Technical Field

The utility model belongs to the technical field of the cable technique and specifically relates to a high strength wire is related to.

Background

At present, 0.13mm²Wires have gradually begun to be used in the wiring harness of cars. Since the cross-sectional area of the core wire is small, the diameter of the monofilament is very small, and therefore high tensile strength and good electrical conductivity are required. The structure of general heart yearn is 7 single strand copper alloy silk, and in pencil assembly, whole car installation and subsequent customer use, any one of heart yearn can not break, otherwise can cause the potential safety hazard. At present, the conductor material of the core wire is generally adoptedThe alloy is copper-magnesium alloy, copper-tin alloy or copper-silver alloy, and the strength of the copper alloy is generally 600-900 MPa.

Too low a strength may result in insufficient tensile strength and breakage. However, an excessive increase in strength also leads to a decrease in impact resistance, and a breakage of the wire due to a sudden force applied during the assembly process.

The specification of the Chinese invention patent CN1993776A discloses that a lead conductor is formed by combining a stainless steel wire and a copper wire, and is used for enhancing the strength of the conductor, but the enhancing capability of the stainless steel wire is limited.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to provide a high strength wire that intensity is high and shock resistance is strong in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the high-strength lead comprises an insulating layer and a core wire which are sequentially connected, wherein the core wire is wrapped by the insulating layer, the core wire comprises a conductor and a 0.9-carbon steel wire which are mutually contacted, and an anti-corrosion layer is coated on the surface of the 0.9-carbon steel wire.

The conductor is a copper alloy conductor.

The anti-corrosion layer is pure copper.

The number of the conductors is 6, the 6 conductors surround a 0.9-carbon steel wire, and the insulating layer wraps the 6 conductors.

The 6 conductors are twisted.

The strength of the conductor is 700-900MPa, and the strength of the 0.9-carbon steel wire is 900-1800 MPa.

The thickness of the anti-corrosion layer is 2-12 um.

The conductor is a conductor with the conductivity of 75% -82%.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the core wire comprises a 0.9-carbon steel wire, and compared with a stainless steel wire, the strength is higher; the carbon content of the 0.9-carbon steel wire is 0.90%, so that the impact resistance can be ensured while the strength is improved.

(2) The cost of the 0.9-carbon steel wire is lower, so that the material cost of the integral wire is also lower.

(3) The density is reduced, the steel density is lower than that of copper, and the combination of 0.9-carbon steel wire and 6 conductors can reduce the weight of the wire to a certain extent compared with 7 single-strand copper alloy wires.

(4) The anti-corrosion layer of pure copper can prevent the copper alloy conductor from electrochemical corrosion and ensure the stability of the copper alloy conductor.

(5) The strength of the conductor is 700-900MPa, and the strength of the 0.9-carbon steel wire is 900-1800MPa, so that the 0.9-carbon steel wire and the copper alloy conductor can be simultaneously subjected to plastic deformation and connected together during the crimping process.

(6) The 0.9-carbon steel wire has excellent mechanical performance, and the tensile performance is 1-2 times that of a copper alloy conductor, so that the integral tensile strength of the wire is higher.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the wire core of the present invention;

reference numerals:

1 is a conductor; 2 is 0.9-carbon steel wire; 3 is an anti-corrosion layer; and 4, an insulating layer.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

The embodiment provides a novel high-strength wire, as shown in fig. 1 and fig. 2, comprising an insulating layer 4 and a core wire which are sequentially connected, wherein the insulating layer 4 wraps the core wire, the core wire comprises a conductor 1 and a 0.9-carbon steel wire 2 which are mutually contacted, the 0.9-carbon steel wire 2 refers to a carbon steel wire with a carbon content of 0.90%, and the surface of the 0.9-carbon steel wire 2 is coated with an anti-corrosion layer 3; the core wire comprises a 0.9-carbon steel wire 2, which has higher strength compared with a stainless steel wire; the carbon content of the 0.9-carbon steel wire 2 is 0.90%, the impact resistance can be ensured while the strength is improved, and the material cost and the density of the whole lead are lower.

The 0.9-carbon steel wire 2 is positioned at the center of the core wire, the number of the conductors 1 is 6, the conductors 1 are distributed around the 0.9-carbon steel wire 2, and the 6 conductors 1 are twisted.

The strength of the 0.9-carbon steel wire 2 is between 900-1800MPa, and the strength is close to or slightly higher than that of the conductor 1, so that the 0.9-carbon steel wire and the copper alloy can be simultaneously plastically deformed and connected together during the crimping process. If the strength of the 0.9-carbon steel wire is too high relative to the strength of the copper alloy, the 0.9-carbon steel wire is not easy to deform and fails due to loose crimping during crimping; the tensile elongation of the 0.9-carbon steel wire 2 is more than 5 percent, so that the integral tensile strength of the wire is higher.

The materials of the anti-corrosion layer 3 are: pure copper, brass or zinc or tin or nickel, with a thickness between 2-12um, overall, tends to be with pure copper layers; the anti-corrosion layer 3 made of pure copper can prevent the copper alloy conductor from electrochemical corrosion and ensure the stability of the copper alloy conductor. The anti-corrosion layer 3 can be combined on the interface of the 0.9-carbon steel wire 2 by adopting a composite method, an electroplating method or a hot-dip plating method, and the combined interface of the anti-corrosion layer 3 and the conductor 1 is metallurgically combined.

The conductor 1 is a copper alloy conductor, the material of the copper alloy conductor is copper magnesium or copper tin alloy, the conductivity is 75% -82%, the strength is between 700 and 900MPa, the overall strength is ensured, and the twisting is easy.

The insulating layer 4 may be any insulating material, such as XLPE, PP, PVC, PPE, TPU, etc.

The core wire may be of a compressed construction so that the whole is more stable and the overall cross-sectional area (diameter) is smaller.

Claims

1. The high-strength lead comprises an insulating layer (4) and a core wire which are sequentially connected, wherein the insulating layer (4) wraps the core wire, and is characterized in that the core wire comprises a conductor (1) and a 0.9-carbon steel wire (2) which are in contact with each other, and an anti-corrosion layer (3) is coated on the surface of the 0.9-carbon steel wire (2).

2. A high-strength wire as claimed in claim 1, wherein said conductor (1) is a copper alloy conductor.

3. A high-strength wire according to claim 2, wherein said corrosion-resistant layer (3) is pure copper.

4. A high strength wire as claimed in claim 1, wherein said conductors (1) have 6 pieces, said 6 pieces of conductors (1) are surrounded by a 0.9-carbon steel wire (2), and said insulating layer (4) surrounds said 6 pieces of conductors (1).

5. A high strength wire according to claim 4, wherein said 6 conductors (1) are twisted.

6. The high-strength wire as claimed in claim 1, wherein the strength of the conductor (1) is 700-900MPa, and the strength of the 0.9-carbon steel wire (2) is 900-1800 MPa.

7. A high-strength wire according to claim 1, wherein the thickness of said corrosion-resistant layer (3) is 2-12 um.

8. A high-strength wire according to claim 1, wherein said conductor (1) is a conductor (1) having an electric conductivity of 75% to 82%.