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A kind of high-strength and high-conductivity cu-cr-fe-mg-p alloy wire and its preparation method

A cu-cr-fe-mg-p, alloy wire technology, applied in the direction of anodic oxidation, etc., can solve the problems of uneven structure performance, reduced strength performance, difficult cooling rate, etc., to achieve uniform structure performance and overcome strength performance The effect of reducing and improving the conductivity

Active Publication Date: 2019-09-10
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, age-strengthened conductive copper alloys need to undergo solution quenching to obtain supersaturated solid solutions. The purpose of this process is to obtain the power of aging precipitation, which has the process characteristics of rapid cooling. However, copper alloys prepared on a large scale have a large coil weight , large length characteristics, the rapid quenching process is difficult to obtain consistent cooling rates in different parts of this type of material, leading to the problem of uneven microstructure and properties of this type of material in large-scale preparation
In addition, the matching between electrical conductivity and strength properties is always two properties that are difficult to balance in the development of high-strength and high-conductivity copper alloys, that is, the improvement of electrical conductivity usually leads to the decrease of strength properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Dosing according to the following ingredients: Cr 0.35%, Fe 0.1%, Mg 0.1%, P 0.06%, the balance is pure copper, Cr and P are added in the form of copper-chromium master alloy and copper-phosphorus master alloy respectively. Prepare Cu-Cr-Fe-Mg-P alloy wire according to the steps of smelting-continuous casting-continuous extrusion-drawing-aging treatment-multi-pass drawing-aging treatment-electrochemical surface oxidation:

[0032] (1) Melting: Pure copper is smelted in a melting furnace by induction melting. The furnace lining material is made of highly stable MgO material. After the pure copper is melted, it is covered with 120mm graphite flakes to isolate the air. The melting temperature reaches 1300°C , add pure iron, copper-chromium master alloy, pure magnesium and copper-phosphorus master alloy successively, heat preservation 20min, transfer to holding furnace, obtain alloy melt;

[0033] (2) Continuous casting: analyze the composition of the alloy melt in the hold...

Embodiment 2

[0038] The ingredients are formulated according to the following mass percentages: Cr 0.25%, Fe 0.07%, Mg 0.07%, P0.03%, and the balance is pure copper, wherein Cr and P are in the form of copper-chromium master alloy and copper-phosphorus master alloy respectively join in. Prepare Cu-Cr-Fe-Mg-P alloy wire according to the steps of smelting-continuous casting-continuous extrusion-drawing-aging treatment-multi-pass drawing-aging treatment-electrochemical surface oxidation:

[0039] (1) Melting: Pure copper is smelted in a melting furnace by induction melting. The furnace lining material is made of highly stable MgO material. After the pure copper is melted, it is covered with 120mm graphite flakes to isolate the air. The melting temperature reaches 1300°C , add pure iron, copper-chromium master alloy, pure magnesium and copper-phosphorus master alloy successively, heat preservation 20min, transfer to holding furnace, obtain alloy melt;

[0040](2) Continuous casting: analyze t...

Embodiment 3

[0045] The ingredients are formulated according to the following mass percentages: Cr 0.30%, Fe 0.06%, Mg 0.1%, P0.039%, and the balance is pure copper, wherein Cr and P are in the form of copper-chromium master alloy and copper-phosphorus master alloy respectively join in. Prepare Cu-Cr-Fe-Mg-P alloy wire according to the steps of smelting-continuous casting-continuous extrusion-drawing-aging treatment-multi-pass drawing-aging treatment-electrochemical surface oxidation:

[0046] (1) Melting: Pure copper is smelted in a melting furnace by induction melting. The furnace lining material is made of highly stable MgO material. After the pure copper is melted, it is covered with 120mm graphite flakes to isolate the air. The melting temperature reaches 1300°C , add pure iron, copper-chromium master alloy, pure magnesium and copper-phosphorus master alloy successively, heat preservation 20min, transfer to holding furnace, obtain alloy melt;

[0047] (2) Continuous casting: analyze ...

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Abstract

The invention discloses a high-strength high-conductivity Cu-Cr-Fe-Mg-P alloy wire and a preparation method thereof, and belongs to the field of conductive copper alloy wires. The alloy wire comprises, by mass, 0.25-0.35% of Cr, 0.05-0.1% of Fe, 0.05-0.1% of Mg, 0.03-0.06% of P less than or equal 0.05% of inevitable impurities and the balance Cu. The preparation method comprises the steps of smelting, continuous casting, continuous extrusion, drawing, aging treatment, multi-pass drawing, aging treatment, electrochemical surface oxidation. Through the preparation method, the uniformity of the performance of the long-length wire is ensured, matching of the mechanical performance and the conductivity is optimized, and the prepared copper apply wire has the good comprehensive performance suchas high strength and conductivity, fatigue resistance and high-temperature softening resistance.

Description

technical field [0001] The invention relates to the field of conductive copper alloy materials, in particular to a high-strength and high-conductivity Cu-Cr-Fe-Mg-P alloy wire and a preparation method thereof. Background technique [0002] At present, age-strengthened conductive copper alloys need to undergo solution quenching to obtain supersaturated solid solutions. The purpose of this process is to obtain the power of aging precipitation, which has the process characteristics of rapid cooling. However, copper alloys prepared on a large scale have a large coil weight , large length, rapid quenching process is difficult to obtain a consistent cooling rate in different parts of this type of material, leading to the problem of uneven microstructure and properties of this type of material prepared on a large scale. In addition, the matching between electrical conductivity and strength properties is always two properties that are difficult to balance in the development of high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08C25D11/34
Inventor 张建波满绪存陈俏胡涛涛靳一鸣李勇肖翔鹏
Owner JIANGXI UNIV OF SCI & TECH
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