A compound deformation heat treatment method suitable for cu-cr-zr alloy wire

A deformation heat treatment, cu-cr-zr technology, applied in the field of composite deformation heat treatment, can solve the problems of lack of content in alloy ultra-fine wire processing and heat treatment methods

Active Publication Date: 2016-06-22
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the academic research and patent content on the alloy system are concentrated on the preparation, processing and heat treatment of alloy plates, strips and bars, while the content on the processing and heat treatment methods of alloy ultra-fine wires is relatively scarce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 1kg of Φ10mmCu-0.3wt.%Cr-0.1wt.%Zr alloy wire rod, and carry out solid solution treatment in a resistance furnace. The solid solution temperature is 950°C, the holding time is 1h, and quenched; Cold drawing to Φ2mm, the deformation amount is 96%, and the deformation amount of each pass is 12-18%; put the coiled wire after cold drawing into an argon-protected resistance furnace, and perform an aging treatment at 400°C for 10 hours , air-cooled to room temperature, and then subjected to secondary aging treatment, the aging temperature was 450°C, the holding time was 1.5h, and air-cooled to room temperature; it was drawn to Φ0.8mm through 11 passes on a continuous wire drawing machine, and the deformation was 87.75 %, the deformation amount of each pass is 5-8%, using an annealing furnace protected by inert gas (such as a tube furnace), annealing on-line protected by argon gas, and the annealing temperature is 450 ° C for 3 seconds; continuous silver plating; Each pas...

Embodiment 2

[0036] Take 10kg of Φ10mmCu-0.6wt.%Cr-0.06wt.%Zr alloy wire rod, carry out solid solution treatment in a resistance furnace, the solid solution temperature is 960°C, the holding time is 1h, quench water; the solid solution wire rod Cold drawn to Φ1.14mm, the amount of deformation is 98.7%, and the amount of deformation per pass is 11-15%; put the coiled wire after cold drawing into an argon-protected resistance furnace, and perform an aging treatment at a temperature of 420°C. Insulate for 15 hours, air cool to room temperature, and then carry out secondary aging treatment, the aging temperature is 475 ° C, holding time is 3 hours, air cool to room temperature; continuous silver plating; then draw to Φ0. 7mm, the deformation is 62.3%, and the deformation of each pass is 5-8%. Use an annealing furnace protected by inert gas (such as a tube furnace), and anneal on-line protected by argon gas. The annealing temperature is 400°C and stays for 1s.

[0037] Using the above composite...

Embodiment 3

[0039] Take 5kg of Φ6mmCu-0.2wt.%Cr-0.05wt.%Zr-0.05wt.%Sn alloy wire rod, carry out solid solution treatment in a resistance furnace, the solution temperature is 940°C, the holding time is 45min, and quenched; The wire rod after solid solution is cold-drawn to Φ1mm, the deformation amount is 97.2%, and the deformation amount of each pass is 12-18%. 475 ℃, heat preservation 3h, air cooling to room temperature; continuous nickel plating; drawing on a continuous wire drawing machine to Φ0.2mm, the deformation is 96%, the deformation of each pass is 5-8%, and the annealing furnace protected by inert gas (such as tube type furnace), argon protection online annealing, the annealing temperature is 520 ℃ for 2s.

[0040] Using the above composite deformation heat treatment process, a Φ0.2mm nickel-plated copper-chromium-zirconium-tin alloy wire with a tensile strength of 449MPa, an elongation of 8.1%, and an electrical conductivity of 85.5% IACS can be obtained.

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Abstract

The invention relates to a composite heat treatment method applicable to a Cu-Cr-Zr alloy wire, and belongs to the field of non-ferrous metal heat treatment. Th e method is as below: using the Cu-Cr-Zr alloy wire rod as a raw material wire billet; conducting a solid solution treatment; conducting multi-path cold drawn to form a disc wire; conducting a single-stage or multi-stage aging treatment;and conducting one or more rounds of continuous cold processing and annealing. The method is applicable to preparation process of ultrafine wires of a variety of low alloyed Cu-Cr-Zr-X alloy containing 0.15-0.6 wt.% of Cr, 0.03-0.4 wt.% of Zr,0.01-0.1 wt.% of fourth and fifth group elements (Sn, Si, Ag and RE) and the balance of Cu. The invention simplifies preparation processing technology for of the aging strengthening type of alloy wire,saves material and energy, at the same time ensures the stability of quality of wire, and can satisfy the usage requirement of cables with different comprehensive performance in many fields.

Description

technical field [0001] The invention relates to a composite deformation heat treatment method suitable for Cu-Cr-Zr alloy wires, especially suitable for composite deformation heat treatment of high-strength and high-conductivity Cu-Cr-Zr alloy ultra-fine wires, and belongs to the field of heat treatment of non-ferrous metals . Background technique [0002] High-end cables used in high-tech fields such as aerospace, automobiles, electronics, and new energy are important precision conductors. Twisted wire, wrapped with a polymer insulating layer and a metal shielding layer on the outer layer, has high electrical conductivity, high strength, good plasticity, high temperature resistance, and strong oxidation resistance. It is an indispensable basic material widely used in high-tech fields, and it undertakes the role of current transmission and signal transmission in special environments. [0003] International high-end wire and cable core alloy conductor materials include copp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/08C22C9/00
Inventor 解浩峰米绪军李艳锋尹向前高宝东黄国杰冯雪
Owner GRIMAT ENG INST CO LTD
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