Preparation process of high-thermal-conductivity extruded aluminum alloy profile

A technology of aluminum alloy profile and preparation process, which is applied in the field of preparation process of extruded aluminum alloy profile with high thermal conductivity, can solve the problems of low product cost performance, high engineering cost, high price, etc., achieve safe and reliable electricity use, and reduce line loss , cost-effective effect

Active Publication Date: 2019-10-18
JIANGSU WEITENG COPPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these products and technologies are mastered by foreign companies. Their high prices make the cost performance of the products very low, which makes many users discouraged, and also makes the cost of many projects extremely high, which brings a great burden to the country and the people.

Method used

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  • Preparation process of high-thermal-conductivity extruded aluminum alloy profile

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of Al-Mg-Si aluminum alloy, by mass percentage: Si 0.33%, Mg 0.52%, Fe 0.12%, Cr and / or Mn 0.005%, V and / or Ti 0.02%, Cu 0.01% , Zn 0.05%, B 0.03%, other unavoidable impurity elements, the mass percentage of the other unavoidable impurity elements is not more than 0.02%, and the balance is Al.

[0027] The preparation steps are as follows:

[0028] 1) Melting and casting: According to the above mass percentage, aluminum is first added to the furnace, heated to 700°C to melt, and then other components except aluminum are added, and the casting rough material is obtained after melting.

[0029] 2) Refining: Control the temperature of the casting rough material described in step 1) at 720°C, add an appropriate amount of refining agent and refining agent, and refine for 15 to 20 minutes. The refining agent is Al-Ti-C or Al- Ti-B, the refining agent is 40% Na 3 AlF 6 +30%NaCl+30%KCl composition; then control the temperature at 680°C and let it stand f...

Embodiment 2

[0033] A method for preparing Al-Mg-Si aluminum alloy, by mass percentage: Si 0.35%, Mg 0.55%, Fe 0.12%, Cr and / or Mn 0.005%, V and / or Ti 0.02%, Cu 0.01% , Zn 0.05%, B 0.03%, other unavoidable impurity elements, the mass percentage of the other unavoidable impurity elements is not more than 0.02%, and the balance is Al.

[0034] The preparation steps are as follows:

[0035] 1) Melting and casting: According to the above mass percentage, aluminum is first added to the furnace, heated to 750°C to melt, and then other components except aluminum are added to obtain casting rough material after melting.

[0036]2) Refining: Control the temperature of the casting rough material described in step 1) at 730°C, add an appropriate amount of refining agent and refining agent, and refine for 18 minutes. The refining agent is Al-Ti-C or Al-Ti- B, the refining agent is 40% Na 3 AlF 6 +30%NaCl+30%KCl composition; then control the temperature at 700°C and let it stand for 15 to obtain the...

Embodiment 3

[0040] A preparation method of Al-Mg-Si aluminum alloy, by mass percentage: Si 0.35%, Mg 0.56%, Fe0.08%, Cr and / or Mn≤0.004%, Ti 0.01%, Cu≤0.001%, Zn 0.04%, B 0.011%, other unavoidable impurity elements, the mass percentage of the other unavoidable impurity elements is not more than 0.02%, and the balance is Al.

[0041] The preparation steps are as follows:

[0042] 1) Melting and casting: According to the above mass percentage, aluminum is first added to the furnace, heated to 800°C to melt, and then other components except aluminum are added, and the casting rough material is obtained after melting.

[0043] 2) Refining: Control the temperature of the casting rough material described in step 1) at 740°C, add an appropriate amount of refining agent and refining agent, and refine for 20 minutes. The refining agent is Al-Ti-C or Al-Ti- B, the refining agent is 40% Na 3 AlF 6 +30%NaCl+30%KCl composition; then control the temperature at 710°C and let it stand for 20min to obt...

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Abstract

The invention discloses a preparation process of a high-thermal-conductivity extruded aluminum alloy profile. The preparation process comprises the following steps of 1) extrusion, 2) refining, 3) extruding, and 4) effectiveness and the like. An online air cooling technology is adopted, the process of solid solution treatment is omitted, so that the production efficiency is improved; and optimization is carried out on various parameters, especially effective parameters in the preparation process so as to obtain an optimal scheme. According to the preparation process, the formula of the aluminum alloy is improved, the content of Mg and Si in the aluminum alloy component is reduced, Mg / Si ratio is controlled, so that the type of the alloy is in a slightly excess type of Si, and the harmful effect of V is eliminated by adding the boron adding element. On the premise of keeping the hardness, the conductivity of the product is improved. Through verification, the vickers hardness of the product can reach more than 11 Hw or above, the tensile strength is higher than 215 Mpa, the electric conductivity at 20 DEG C is higher than 56% IACS, and the heat conductivity coefficient can reach 220W / mK or above, and all technical parameters reach the world leading level.

Description

technical field [0001] The invention relates to a preparation process of extruded aluminum alloy profiles with high thermal conductivity. [0002] technical background [0003] At present, the domestic low-voltage busway market is becoming more mature and standardized, and the competition is more fierce. In some large-scale key engineering projects in some countries, in addition to high-grade products, there are more important demand factors, including energy saving and electricity safety. Reliable etc. But at present, there are almost no busway manufacturers with high conductivity and energy-saving grades in China, and even if there are, they can only reach the international level: such as some busway products produced by Schneider. [0004] Heat treatment has a significant effect on the strength and thermal conductivity of the alloy. Among them, the homogenization treatment can eliminate intragranular segregation and strengthen the phase Mg 2 Si will dissolve into the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/08C22F1/047C22F1/05
CPCC22C1/026C22C1/03C22C1/06C22C21/08C22F1/047C22F1/05
Inventor 施国斌
Owner JIANGSU WEITENG COPPER CO LTD
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