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Aluminum-clad steel wire and its preparation method

A technology of aluminum-clad steel wire and steel wire, which is applied in the field of aluminum-clad steel wire and its preparation, can solve the problem that the tensile strength cannot reach 2000MPa, and achieve the effect of optimizing the drawing process, simple steps, and convenient operation

Active Publication Date: 2021-08-17
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 its preparation method
  • Aluminum-clad steel wire and its preparation method
  • Aluminum-clad steel wire and its preparation method

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 2000 M...

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 method for preparing aluminum-clad steel wire, which includes the following steps: removing scale from carbon steel above grade 92A and lubricating the surface with high softening point lubricating powder, and then obtaining the required wire diameter through cold drawing process Steel wire; the steel wire is subjected to continuous isothermal quenching treatment to obtain a heat-treated steel wire with a sorbite conversion rate greater than 90% and a tensile strength greater than 1440Mpa; the surface of the heat-treated steel wire is polished, and then extruded and coated with a layer of aluminum to form a coated busbar; The coated busbar is stretched synchronously to the required wire diameter for multiple passes to form an aluminum-clad steel wire with a tensile strength greater than 2000MPa. The preparation method of the aluminum-clad steel wire provided by the present invention has simple steps and convenient operation. The lubricating powder with a high softening point is used to optimize the rough drawing production process, and the parameters such as the total compression rate and the pass compression rate are adjusted to optimize the bimetallic aluminum-clad steel wire. Drawing process, the prepared aluminum-clad steel wire has a tensile strength of more than 2000Mpa.

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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Patent Type & Authority Patents(China)
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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