Preparation technology of Al-Er alloy lead wire

A preparation process and alloy wire technology, which is applied in the direction of metal/alloy conductors, cable/conductor manufacturing, electrical components, etc., can solve the problems of greatly affecting the conductivity

Inactive Publication Date: 2011-05-04
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Zr has a great influence on the conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] The aluminum ingot with an aluminum content greater than 99.9% is melted in a resistance crucible furnace, and the graphite clay crucible is used to melt the aluminum ingot at 780°C to 800°C, and then add aluminum-erbium master alloy (containing 6wt% erbium), ice crystal Stone covering, hexachloroethane degassing, electromagnetic stirring, standing for 30 minutes, pouring at 720 ℃ iron mold. Ingot size Φ110×330mm. An alloy with an erbium content of 0.07% by weight was smelted. Insulated at 300°C for 4 hours, hot-extruded into Φ10 rods, kept at 640°C for 10 hours, then water quenched at room temperature, then kept at 300°C for 4 hours, and then cold-drawn into Φ3 wires. Tensile strength: 128MPa; Yield strength: 123MPa; Elongation: 18.7%; Electrical conductivity: 63.1% IACS.

example 2

[0023] The aluminum ingot with an aluminum content greater than 99.9% is melted in a resistance crucible furnace, and the graphite clay crucible is used to melt the aluminum ingot at 780°C to 800°C, and then add aluminum-erbium master alloy (containing 6wt% erbium), ice crystal Stone covering, hexachloroethane degassing, electromagnetic stirring, standing for 30 minutes, pouring at 720 ℃ iron mold. Ingot size Φ110×330mm. An alloy with an erbium content of 0.07% by weight was smelted. Insulated at 300°C for 4 hours, hot-extruded into Φ10 rods, kept at 640°C for 10 hours, water quenched at room temperature, then cold-drawn into Φ3 wires, and then kept at 300°C for 4 hours. Tensile strength: 134MPa; Yield strength: 125MPa; Elongation: 21.2%; Electrical conductivity: 64.1% IACS.

example 3

[0025] The aluminum ingot with an aluminum content greater than 99.9% is melted in a resistance crucible furnace, and the graphite clay crucible is used to melt the aluminum ingot at 780°C to 800°C, and then add aluminum-erbium master alloy (containing 6wt% erbium), ice crystal Stone covering, hexachloroethane degassing, electromagnetic stirring, standing for 30 minutes, pouring at 720 ℃ iron mold. Ingot size Φ110×330mm. An alloy with an erbium content of 0.07% by weight was smelted. Insulated at 300°C for 4 hours, hot-extruded into Φ10 rods, kept at 640°C for 10 hours, then water-quenched at room temperature, then cold-drawn into Φ3 wires, and then held at 275°C for 10 hours. Tensile strength: 137MPa; Yield strength: 129MPa; Elongation: 18.8%; Electrical conductivity: 63.8% IACS.

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Abstract

The invention discloses a preparation technology of Al-Er alloy lead wire, comprising the following steps of: 1) configuring alloy, adding Er element into molten aluminium liquid (more than 99.9%) in a way of intermediate alloy according to the weight percentage of Er within the range of 0.07wt%-0.27wt%; 2) casting the aluminium liquid into cast ingots and then hot extruding into round aluminium rods; 3) carrying out solution treatment on the rods for 10h at the temperature of 640 DEG C, and then water quenching at the room temperature; and 4) carrying out heat preservation on the rods treated by quenching for 4-10h before being dawn and after being dawn at the temperature of 275-300 DEG C. The prepared lead wire maintains higher strength, good elongation percentage and good electric conduction performance.

Description

technical field [0001] The invention relates to a preparation process of an aluminum-erbium alloy wire, belonging to the technical field of metal alloys. Background technique [0002] Aluminum alloy wire is a conductive material with good heat resistance and high strength developed by adding effective alloying elements without affecting its conductivity and corrosion resistance. This aluminum alloy wire is used as a transmission line. In addition to its high strength, it can also significantly expand the capacity of the wire. The application of aluminum alloy series wires on the transmission line has significant social and economic benefits. [0003] The alloying element added in the current aluminum alloy wire is mainly Zr, and through proper heat treatment, Zr can be transformed into Al 3 The form of Zr is dispersed and precipitated in a large amount from the matrix, and becomes the main strengthening phase, thereby improving the strength of the aluminum alloy. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22F1/04H01B1/02H01B13/00
Inventor 黄晖张义文胜平陈子勇聂祚仁
Owner BEIJING UNIV OF TECH
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