Method for producing aluminum alloy bar material

A manufacturing method and technology of aluminum alloy, applied in the field of bar manufacturing, can solve the problem that the strength and electrical conductivity of the alloy bar cannot meet the requirements at the same time, and achieve the effects of excellent comprehensive mechanical properties, good surface quality and good formability.

Inactive Publication Date: 2013-06-19
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The present invention aims to solve the technical problem that the strength and electrical conductivity of the alloy rods prepa

Method used

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specific Embodiment approach 1

[0018] Specific embodiment 1: The method for manufacturing an aluminum alloy rod of this embodiment is carried out according to the following steps:

[0019] 1. The mass percentages of each element are Si: 0.05% to 0.5%, Fe: 0.05% to 0.5%, Cu: 1.4% to 2.0%, Mn: 0.2% to 0.6%, Mg: 1.8% to 2.8%, Cr: 0.1%~0.25%, Ni: 0.02%~0.1%, Zn: 5.5%~7.0%, Ti: 0.01%~0.05% and the balance Al, weigh the aluminum ingot, aluminum manganese master alloy, aluminum chromium master alloy, Pure zinc ingot, pure magnesium ingot, pure copper ingot and aluminum titanium boron wire;

[0020] 2. The metal weighed in step 1 is added to a smelting furnace for smelting, the smelting temperature is 730-760℃, and the smelting time is 8-9h to obtain an aluminum alloy melt;

[0021] 3. Put the aluminum alloy melt obtained in step 2 at a casting temperature of 730~745℃, a casting speed of 80~85mm / min, a cooling water intensity of 0.04~0.08MPa, and a cooling water temperature of 10~20℃. Casting to obtain an aluminum alloy...

specific Embodiment approach 2

[0032] Specific embodiment two: this embodiment is different from specific embodiment one in that the mass percentages of each element in step one are Si: 0.05%, Fe: 0.15%, Cu: 1.8%, Mn: 0.3%, and Mg: 2.2% , Cr: 0.15%, Ni: 0.01%, Zn: 6.2%, Ti: 0.01% and the balance Al, weigh the aluminum ingot, aluminum-manganese master alloy, aluminum-chromium master alloy, pure zinc ingot, pure magnesium ingot, pure Copper ingot and aluminum titanium boron wire. Others are the same as the first embodiment.

specific Embodiment approach 3

[0033] Specific embodiment three: This embodiment is different from specific embodiment one or two in that in step two, the melting temperature is 750°C, and the melting time is 8.5h. Others are the same as the first or second embodiment.

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Abstract

The invention relates to a method for producing an aluminum alloy bar material, and relates to the method for preparing the bar material. The method provided by the invention solves the technical problem that the strength and conductivity of the alloy bar materials prepared by the current methods can not be satisfied. The production method comprises the following steps: 1)weighting; 2) melting; 3) casting; 4) cutting, removing oxide skin; 5) performing uniformization annealing; 6) heating and extruding; 7) performing solid solution treatment; 8) stretching and straightening; 9) performing roll straightening; and 10) performing aging treatment. The tensile strength of the prepared aluminum alloy bar material is no less than 650N/mm<2>, the non-proportional extension strength is no less than 610N/mm<2>, the heat conductivity is more than 120W/m.K at 25 DEG C, and the conductivity is greater than 1.67*107S/m at 25 DEG C. The prepared aluminum alloy bar material is used for high and new technology field.

Description

Technical field [0001] The invention relates to a method for manufacturing a bar. Background technique [0002] At present, my country's high-tech fields need a special aluminum alloy bar product, which requires the tensile strength of this alloy bar to reach 650N / mm 2 , Non-proportional extension strength reaches 610N / mm 2 、The thermal conductivity is greater than 120W / m·K at 25°C, and the electrical conductivity is greater than 1.67×10 at 25°C 7 S / m, but the strength and conductivity of alloy bars produced by the existing technology cannot meet the requirements at the same time, so they cannot meet the application requirements of products in this field. Summary of the invention [0003] The invention aims to solve the technical problem that the strength and electrical conductivity of the alloy bar prepared by the existing method cannot meet the requirements at the same time, thereby providing a manufacturing method of the aluminum alloy bar. [0004] The manufacturing method of an...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22F1/053
Inventor 白晓霞王凤春吕丹吕新宇金龙兵刘科研吴欣凤
Owner NORTHEAST LIGHT ALLOY CO LTD
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