Prestressed aluminum-cladding stranded wire

A technology of prestressed steel strands and aluminum-clad steel, which is applied in the direction of metal extrusion control equipment, bridges, manufacturing tools, etc., can solve the problems of easy corrosion, reduce the service life of bridges, and short service life, so as to prolong the service life , Improve the bonding strength and improve the effect of corrosion resistance

Active Publication Date: 2009-11-11
XINHUA METAL PROD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Existing bridge cable manufacturing mainly uses prestressed smooth steel wire and steel strand, prestressed galvanized steel wire or steel strand, and prestressed smooth steel wire and steel strand, prestressed galvanized steel wire and steel strand all exist easily to corrode, The problem of short service life, the bridge cables made of them also have these problems, these problems greatly reduce the service life of the bridge

Method used

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Examples

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Embodiment Construction

[0007] A prestressed aluminum-clad steel strand manufacturing process is: the prestressed steel strand is used for surface treatment by pickling, boronizing, and drying in conventional methods, and then drawn into required specifications by a wire drawing machine. Steel wire, so that the strength of the steel wire reaches 1800-1900MPa, the steel wire is cleaned, dried, and preheated to 400-450°C, and then enters the continuous extrusion coating machine; at the same time, the electrician after cleaning, drying, and straightening The aluminum rod or aluminum alloy rod enters from the other end of the continuous extrusion coating machine at the same time. The temperature in the mold cavity of the continuous extrusion coating machine is 450-500 ° C, the pressure is 60-70 MPa, and the coating speed is 120-130 m / First, the aluminum extruded by the continuous extrusion coating machine is wrapped on the surface of the steel wire, and the wire is taken up after cooling and drying to fo...

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Abstract

A production process of a prestress aluminum-cladding stranded wire comprises steps as follows of : executing surface treatment to the wire rod by conventional acid pickling, awning and drying, then through a drawbench drawing the steel wire to a desired specification, enabling the steel wire intensity to achieve certain intensity. Before entering a continuous extruding cladding machine, the steel wire is washed, dried, and preheated. Meanwhile, an electrician aluminum pole or an aluminum alloy pole is washed, dried and straightened. The aluminum pole enters from another end of cladding machine, and aluminum material is extruded by the continuous extruding cladding machine to wrap outside the steel wire. The next step is cooling, drying and recovering the wire. Then aluminum-cladding steel wire is intertwisted for forming stranded wire. After heating in an intermediate frequency stove, and carrying on the stabilizing treatment, the prestress aluminum-clad stranded wire is formed finally. The prestress aluminum-clad stranded wire in this invention has high intensity and has low relaxation and corrosion resistant properties.

Description

technical field [0001] The invention relates to a bimetallic composite material, in particular to an aluminum-clad steel strand for prestressing. Background technique [0002] Aluminum-clad steel strands for prestressing are mainly used in the manufacture of bridge cables. Existing bridge cable manufacturing mainly uses prestressed smooth steel wire and steel strand, prestressed galvanized steel wire or steel strand, and prestressed smooth steel wire and steel strand, prestressed galvanized steel wire and steel strand all exist easily to corrode, The problem of short service life, the bridge cables made by them also have these problems, which greatly reduce the service life of the bridge. Contents of the invention [0003] The purpose of the present invention is to provide a high-strength, low-slack, high-corrosion-resistant prestressed aluminum-clad steel strand for bridge cables. [0004] The manufacturing process of the aluminum-clad steel strand for prestressing in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/24B21C31/00B21C23/01B21C29/00D07B1/08E01D19/16
CPCB21C1/00D07B2201/2011D07B2501/2023D07B1/0693B21C23/24D07B2205/306
Inventor 段建华董昌华张建春何玉明
Owner XINHUA METAL PROD
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