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Preparation method of industrial pure aluminum wire

A technology of industrial pure aluminum and industrial pure titanium, applied in conductors, conductive materials, conductive materials, etc., can solve problems such as difficulty in meeting industrial needs, limited total drawing deformation, and low strength.

Active Publication Date: 2020-07-07
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the total deformation of drawing is relatively limited, the increase in strength is small, and the mechanical resistance is relatively large during drawing, the size of the obtained product is limited, and it is difficult to meet the needs of the industry.

Method used

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  • Preparation method of industrial pure aluminum wire
  • Preparation method of industrial pure aluminum wire
  • Preparation method of industrial pure aluminum wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, melt purification treatment: select industrial pure aluminum AA1070 as the raw material, put the industrial pure aluminum in a resistance furnace and melt it to 720°C, then add 50ppm of industrial pure titanium to the melt and perform mechanical stirring, then add 300ppm of B element treatment, in which B element is added to the melt in the form of Al-3B master alloy. The melt is kept warm for 15 minutes so that the impurity elements form borides and precipitate to the bottom of the melt, realizing the separation of the impurity elements from the melt. After the heat preservation is over, the industrial pure aluminum liquid is cast into copper molds of different sizes to form cast rod.

[0038] Step 2, hot extrusion deformation: put the industrial pure aluminum cast rod obtained after purification treatment in a heat treatment furnace for heat preservation. The dimension of the bar after pressing is

[0039] Step 3, swaging treatment:

[0040] (1) First p...

Embodiment 2

[0044] Step 1, melt purification treatment: select industrial pure aluminum AA1070 as raw material, put industrial pure aluminum in a resistance furnace and melt it to 750°C, at this time add 75ppm industrial pure titanium to the melt and perform mechanical stirring, then add 400ppm B element treatment, in which B element is added to the melt in the form of Al-3B master alloy. The melt is kept warm for 20 minutes so that the impurity elements form borides and precipitate to the bottom of the melt to realize the separation of the impurity elements from the melt. After the heat preservation is over, the industrial pure aluminum liquid is cast into copper molds of different sizes to form cast rod.

[0045] Step 2, hot extrusion deformation: put the industrial pure aluminum cast rod obtained after purification treatment in a heat treatment furnace for heat preservation. The pressed bar size is in

[0046] Step 3, swaging treatment:

[0047] (1) First place the hot-extruded ...

Embodiment 3

[0051] Step 1, melt purification treatment: select industrial pure aluminum AA1070 as raw material, put industrial pure aluminum in a resistance furnace and melt it to 780°C, at this time add 100ppm industrial pure titanium to the melt and perform mechanical stirring, then add 600ppm B element treatment, in which B element is added to the melt in the form of Al-3B master alloy. The melt is kept warm for 30 minutes so that the impurity elements form borides and precipitate to the bottom of the melt to realize the separation of the impurity elements from the melt. After the heat preservation is over, the industrial pure aluminum liquid is cast into copper molds of different sizes to form cast rod.

[0052] Step 2, hot extrusion deformation: put the industrial pure aluminum cast rod obtained after the purification treatment in a heat treatment furnace for heat preservation, the heat preservation temperature is 350°C, and the extrusion ratio is adjusted by selecting an appropria...

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Abstract

The invention relates to a preparation method of an industrial pure aluminum wire. The preparation method of the industrial pure aluminum wire comprises a three-step process of melt purification treatment, hot extrusion treatment and rotary forging treatment, and particularly the low temperature rotary forging treatment process is used after the melt purification treatment and the hot extrusion treatment. According to the preparation method of the industrial pure aluminum wire, by constructing fine elongated grains in materials, the radial size of the fine elongated grains is small and beneficial to the improvement of the strength of the materials, the axial size greatly increases the electron transport distance, the scattering effect of the grain boundary on an electron is reduced, the conductivity of the materials is improved, the mechanical properties are further improved, so that a conductive aluminum alloy with high dimensional accuracy, good surface finish and excellent conductivity and strength is obtained.

Description

technical field [0001] The invention relates to the field of preparation of pure aluminum conductive alloys, in particular to a method for preparing industrial pure aluminum wires. Background technique [0002] Aluminum and aluminum alloys have the advantages of low density, high specific strength, and good electrical and thermal conductivity, and are more and more widely used in automobile manufacturing, electrical industry, aerospace and other fields. In recent years, with the development of the electrical and electrical industry, aluminum and aluminum alloys are increasingly used in wires and cables, electrical switches and other fields to replace copper and copper alloy conductors that are currently widely used. Copper and copper alloy conductors have excellent electrical conductivity and mechanical properties, and have always occupied a large proportion in the field of conductive materials. However, the reserves of copper resources in the world have decreased sharply, e...

Claims

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Application Information

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IPC IPC(8): C22B21/06C22C1/03B21C37/04H01B1/02
CPCC22B21/06C22C1/03C22C1/026H01B1/023B21C37/047
Inventor 聂金凤陆峰华赵永好李玉胜周浩曹阳
Owner NANJING UNIV OF SCI & TECH
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