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Aluminum-clad steel wire and preparation method thereof

A technology of aluminum-clad steel wire and steel wire, applied in the field of aluminum-clad steel wire and its preparation, can solve the problem that the tensile strength cannot reach 2000MPa

Active Publication Date: 2020-10-27
ZHONGTIAN ELECTRIC POWER OPTICAL CABLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tensile strength of the aluminum-clad steel wire produced at present cannot reach more than 2000MPa

Method used

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  • Aluminum-clad steel wire and preparation method thereof
  • Aluminum-clad steel wire and preparation method thereof
  • Aluminum-clad steel wire and preparation method thereof

Examples

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Effect test

preparation example Construction

[0023] see figure 1 , figure 1 It is a schematic flow chart of a method for preparing an aluminum-clad steel wire in an embodiment of the present invention, which specifically includes the following steps:

[0024] Step S11, performing mechanical peeling, abrasive belt grinding and surface lubrication on the carbon steel above grade 92A in sequence, and then obtaining a steel wire with a required wire diameter through a cold drawing process;

[0025] Step S12, performing continuous austempering on the steel wire to obtain a heat-treated steel wire with a sorbite conversion rate greater than 90% and a tensile strength greater than 1440Mpa;

[0026] Step S13, grinding the surface of the heat-treated steel wire, and then extruding and coating a layer of aluminum to form a coated bus bar;

[0027] In step S14, the clad busbar is stretched synchronously for multiple times to the required wire diameter to form an aluminum clad steel wire with a tensile strength greater than 2000MP...

Embodiment 1

[0035] Will the specification be The AS92A high-carbon steel hot-rolled wire rod passes through the mechanical peeling device, the abrasive belt grinding device, and the coating lubrication device in sequence, and is cold-drawn for 2 passes until the wire diameter required by the process is high carbon steel wire. The drawing speed is controlled at 100m / min, and the line temperature is controlled below 120°C. The coating is lubricated with high softening point lubricating powder, and the pass compression rate is:

[0036]

[0037] Will The high-carbon steel wire is quenched in a lead bath, the wire temperature is controlled at 910°C, the lead bath temperature is at 550°C, the DV value is at 62, the sorbite conversion rate is greater than 90%, and the tensile strength of the steel wire after heat treatment is greater than 1500MPa;

[0038] after heat treatment The surface of the steel wire is polished by multiple groups of rotary abrasive belt polishing machines, the ...

Embodiment 2

[0043] Will the specification be The AS92B high-carbon steel hot-rolled wire rod passes through the mechanical peeling device, the abrasive belt grinding device, and the coating lubrication device in sequence, and is cold-drawn for 2 passes until the wire diameter required by the process is high carbon steel wire. The drawing speed is controlled at 100m / min, and the line temperature is controlled below 120°C. The coating is lubricated with high softening point lubricating powder, and the pass compression rate is:

[0044]

[0045] Will The high-carbon steel wire is quenched in a lead bath, the wire temperature is controlled at 920°C, the lead bath temperature is at 545°C, the DV value is at 62, the sorbite conversion rate is greater than 90%, and the tensile strength of the steel wire after heat treatment is greater than 1550MPa;

[0046] after heat treatment The surface of the steel wire is polished by multiple groups of rotary abrasive belt polishing machines, the ...

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Abstract

The invention provides a preparation method for an aluminum-clad steel wire. The preparation method for the aluminum-clad steel wire comprises the following steps that oxide skin removing treatment isconducted on carbon steel which is above the 92A level, high-softening point lubricating powder is adopted to conduct surface lubrication, and then the steel wire with the needed wire diameter is acquired through a cold drawing technology; continuous isothermal quenching treatment is conducted on the steel wire, and the heat-treated steel wire with sorbite conversion rate greater than 90 percentand tensile strength greater than 1440 Mpa is acquired; the surface of the heat-treated steel wire is polished, a layer of aluminum is clad on the steel wire through extrusion, and a clad busbar is formed; and multi-pass synchronous drawing is conducted on the clad busbar until the needed wire diameter is acquired, and the aluminum-clad steel wire with tensile strength greater than 2000 Mpa is formed. The provided preparation method for the aluminum-clad steel wire is simple in steps and convenient to operate; the high-softening point lubricating powder is utilized, a rough drawing productiontechnology is optimized, parameters such as the total compression ratio and the pass compression ratio are adjusted, the aluminum-clad steel wire duplex metal drawing technology is optimized, and theprepared aluminum-clad steel wire has the tensile strength which is above 2000 Mpa.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an aluminum-clad steel wire and a preparation method thereof. Background technique [0002] Aluminum-clad steel wire is a bimetallic material compounded by metal steel and aluminum based on continuous extrusion cladding technology. It has many characteristics such as high strength and corrosion resistance. With the development of UHV transmission technology in China, the construction of transmission lines with UHV as the backbone network continues to advance. Under harsh conditions such as large spans, large spans, repeated ice, and strong winds, the requirements for the tensile strength of the ground wire are getting higher and higher. The tensile strength of the aluminum-clad steel wire produced at present cannot reach more than 2000MPa. Contents of the invention [0003] In view of this, it is necessary to provide a high-strength aluminum-clad steel wire, the tensile str...

Claims

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Application Information

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IPC IPC(8): B21C37/04C21D1/20C21D9/52
CPCB21C37/047C21D1/20C21D9/525
Inventor 王文辉孙光进李发才徐子龙葛政东
Owner ZHONGTIAN ELECTRIC POWER OPTICAL CABLES CO LTD
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