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Preparation method for high-performance aluminum plate hard bar

A high-performance, aluminum plate technology, which is used in the preparation and heat treatment of aluminum and aluminum alloys, can solve the problems of low energy density and low electrical conductivity of cold-rolled aluminum plates, so as to improve energy density and avoid property and personal safety hazards , the effect of reducing the annealing time

Inactive Publication Date: 2019-09-17
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing high-performance aluminum plate hard bars, which solves the problems of low electrical conductivity and low energy density of cold-rolled aluminum plate hard bars produced in the prior art

Method used

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  • Preparation method for high-performance aluminum plate hard bar
  • Preparation method for high-performance aluminum plate hard bar
  • Preparation method for high-performance aluminum plate hard bar

Examples

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preparation example Construction

[0025] The invention provides a method for preparing a high-performance aluminum plate hard bar, the specific steps are as follows:

[0026] Step 1. Weigh the pure aluminum powder and carry out cold pressing treatment. During the cold pressing process, the pressure is 280MPa~300MPa to obtain aluminum powder blocks. After cold pressing, the aluminum powder has a fast density of 75%~80%, which makes the subsequent arc melting process more efficient. easy to carry out;

[0027] Step 2, smelting the aluminum powder block obtained in step 1: the aluminum powder block obtained in step 1 is smelted by vacuum arc. The molecular pump vacuumizes, and the degree of vacuum is 10 -3 ~10 -4 Pa, then pass in 0.04MPa~0.07MPa argon gas for atmosphere protection, adjust the arc and rotate the arc gun evenly to heat the aluminum powder block evenly until it melts. The arc current of the arc gun is 140A~150A. After melting, turn off the arc and turn over the aluminum block to continue Arc heat...

Embodiment 1

[0033] Prepare high-performance aluminum plate hard bars, weigh 500g of pure aluminum powder with an electronic balance, and cold press it into an aluminum powder block of Φ21mm×70mm under a pressure of 300MPa.

[0034] Put the aluminum powder block on the water-cooled copper plate in the vacuum arc melting equipment, first use the mechanical pump and the molecular pump to evacuate to a vacuum degree of 10 -3 Pa, then pass in 0.06MPa argon gas for atmosphere protection, adjust the arc current to 150A, evenly rotate the arc gun to heat the aluminum powder block evenly until it melts, extinguish the arc after melting and turn over the aluminum block to continue arc heating, repeat 5 times , so that the smelting is uniform and sufficient, and finally the arc is extinguished, and the fine-grained pure aluminum ingot is obtained by virtue of the characteristics of fast heating and fast cooling of the arc smelting;

[0035] The surface of the aluminum block obtained by arc melting i...

Embodiment 2

[0038] Prepare high-performance aluminum plate hard bars, weigh 650g of pure aluminum powder with an electronic balance, and cold press it into an aluminum powder block of Φ21mm×90mm under a pressure of 290MPa.

[0039] Put the aluminum powder block on the water-cooled copper plate in the vacuum arc melting equipment, first use the mechanical pump and the molecular pump to evacuate to a vacuum degree of 10 -3 Pa, then pass in 0.05MPa argon gas for atmosphere protection, adjust the arc current to 145A, evenly rotate the arc torch to heat the aluminum powder block evenly until it melts, extinguish the arc after melting and turn over the aluminum block to continue arc heating, repeat 4 times , so that the smelting is uniform and sufficient, and finally the arc is extinguished. With the help of the characteristics of fast heating and fast cooling of arc smelting, aluminum powder blocks with fine grains are obtained;

[0040] The surface of the aluminum powder block obtained by arc...

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Abstract

The invention discloses a preparation method for a high-performance aluminum plate hard bar, and the specific steps are as follows: firstly weighing pure aluminum powder and performing cold pressing treatment to obtain an aluminum powder block; then, smelting the obtained aluminum powder block; and then, performing cold deformation treatment to the smelted aluminum powder block; finally, performing the annealing treatment to the aluminum powder block after cold deformation, and obtaining an annealing aluminum plate; the preparation method for the high-performance aluminum plate hard bar provided by the invention has the characteristics of high electrical conductivity, low hardness, good fatigue resistance, light weight and thin thickness, and great energy density.

Description

technical field [0001] The invention belongs to the technical field of preparation and heat treatment of aluminum and aluminum alloys, and in particular relates to a method for preparing high-performance aluminum plate hard bars. Background technique [0002] In modern industry and manufacturing industry, the aluminum plate hard bar prepared by cold rolling pure aluminum ingots is directly used in many occasions. However, due to the effect of cold rolling, there are a large number of textures and dislocations in the hard aluminum plate, resulting in a decrease in electrical conductivity and an increase in hardness of the pure aluminum plate. For some hard aluminum plates used in special occasions or working conditions, it is often hoped that they not only have high electrical conductivity and low hardness, but also have good fatigue resistance and lightening and thinning as mentioned many times in new energy. To improve the comprehensive performance of energy density. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22F1/04C22F1/02
CPCC22C1/026C22F1/02C22F1/04
Inventor 邹军涛石林石浩梁淑华
Owner XIAN UNIV OF TECH