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2000 aluminum alloy profile and manufacturing method thereof

A technology for an aluminum alloy profile and a manufacturing method, applied in the field of aluminum profiles, can solve the problems of deterioration of external appearance, occurrence of orange peel, rough recrystallized structure, etc., and achieve the effects of excellent bendability, simplified manufacturing process, and reduced manufacturing cost.

Active Publication Date: 2020-04-14
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the extruded tube formed of 2024 alloy has such a configuration that the interior of the material has a fibrous structure (tissue structure) and the surface area of ​​the material has a rough recrystallized structure, orange peel may occur during bending, and the external appearance may be deterioration

Method used

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  • 2000 aluminum alloy profile and manufacturing method thereof
  • 2000 aluminum alloy profile and manufacturing method thereof
  • 2000 aluminum alloy profile and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for manufacturing a 2000 aluminum alloy profile, comprising the following steps in sequence:

[0031] (1) Prepare aluminum alloy raw materials according to the ratio, and add the prepared aluminum alloy raw materials into a smelting furnace for uniform mixing and then melt and cast them into aluminum alloy ingots, wherein the aluminum alloy raw materials include the following components in mass percentage:

[0032]

[0033] Cu is an element combined with Mg, and Mg is an element combined with Cu and Si. The appropriate content can not only effectively improve the strength of the aluminum alloy material but also avoid cracks that may occur during bending due to the excessive strength of the aluminum alloy material.

[0034] Mn, Cr, Zr and V ensure uniform recrystallization and grain refinement during extrusion. When at least one of Mn, Cr, Zr, and V is not included in the aluminum alloy material, grains of the aluminum alloy material may be coarsened due to F...

Embodiment 2

[0055] A method for manufacturing a 2000 aluminum alloy profile, comprising the following steps in sequence:

[0056] (1) Prepare aluminum alloy raw materials according to the ratio, and add the prepared aluminum alloy raw materials into a smelting furnace for uniform mixing and then melt and cast them into aluminum alloy ingots, wherein the aluminum alloy raw materials include the following components in mass percentage:

[0057]

[0058] (2) Homogenization: heat the aluminum alloy ingot prepared in step (1) at a temperature of 540° C. for more than 3 hours, and then cool the homogenized ingot to room temperature.

[0059] (3) Extrusion: first heat the billet cooled to room temperature to 350° C. to 450° C., and then place the heated billet in an extruder for hot extrusion to obtain an aluminum alloy profile.

[0060] In the extrusion step, the extruding speed of the aluminum alloy profile from the extruder is above 15 m / min, and the extrusion ratio is above 32.

[0061] ...

Embodiment 3

[0066] A method for manufacturing a 2000 aluminum alloy profile, comprising the following steps in sequence:

[0067] (1) Prepare aluminum alloy raw materials according to the ratio, and add the prepared aluminum alloy raw materials into a smelting furnace for uniform mixing and then melt and cast them into aluminum alloy ingots, wherein the aluminum alloy raw materials include the following components in mass percentage:

[0068]

[0069] B, like Ti, can refine the casting structure and suppress the occurrence of cracks during casting when producing aluminum alloy materials, and an appropriate content can prevent the increase in the number of coarse intermetallic compounds and also prevent possible deterioration of bendability. Among them, the content of B is more preferably 20 ppm or less.

[0070] It should be noted that, in this aluminum alloy raw material, inevitable impurities such as Fe and Zn are contained. When Fe content is high, Fe will reduce the grain size of ...

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Abstract

The invention relates to a 2000 aluminum alloy profile and a manufacturing method thereof, and belongs to the field of aluminum profiles. Through the steps of preparation of aluminum alloy raw materials in proportion and casting into an aluminum alloy cast ingot, homogenization, extrusion, softening annealing, cold processing, solution treatment and artificial aging, the processed aluminum alloy material has excellent bendability and high strength, does not have surface defects, can be manufactured without a straightening step, and does not generate surface defects such as orange peel in bending processing. According to the scheme, the straightening step is omitted, so that the manufacturing process is simplified, and the manufacturing cost is saved.

Description

technical field [0001] The invention belongs to the field of aluminum profiles, and in particular relates to a 2000 aluminum alloy profile and a manufacturing method thereof. Background technique [0002] High-strength aluminum alloys have been widely used in the field of transportation to achieve lightweight vehicles. The 2000 series aluminum alloys (such as 2017 alloy and 2024 alloy) are widely used in structural members due to their excellent fatigue strength. These aluminum alloys are commonly used as T3-temper, T4-temper, T6-temper, T8-temper, etc. Aluminum alloys used as structural components in vehicles can be bent according to the specific application. T3 tempered materials, T4 tempered materials, T6 tempered materials, T8 tempered materials, etc. formed of 2000 series aluminum alloys may crack when subjected to bending due to excessive strength, or may crack due to excessive springback. A shape change occurs. [0003] At present, 2000 series aluminum alloys are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/16C22C21/14C22C21/08C22C21/02C22C1/02C22F1/057C22F1/047C22F1/043
CPCC22C1/02C22C21/02C22C21/08C22C21/14C22C21/16C22F1/043C22F1/047C22F1/057
Inventor 刘旭东刘欢胡皓宋超杜连欢杨学均庞俊铭
Owner CHINA ZHONGWANG
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