A kind of preparation method and application of aluminum alloy profiles

A technology for aluminum alloy profiles and aluminum alloys, applied in the field of aluminum alloy processing, can solve problems such as overall strength, service life and storage limitations, and achieve the effects of easy large-scale industrial production, simple production process, and improved competitiveness.

Active Publication Date: 2020-12-22
CHONGQING ALUMINUM KING ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, 6061, 6082, and 6A01 series aluminum alloys are mostly used in the manufacture of automotive structural parts, such as anti-collision beams and beams, but their mechanical properties can barely meet the requirements of the national standard GB / T 6892-2015 (that is, 6082T6 wall thickness Regulations for products ≤5.00mm: tensile strength R m ≥290Mpa, non-proportional extension strength R p0.2 ≥250Mpa, elongation after breaking A 50 mm≥6%), and did not take into account the fatigue resistance of aluminum profiles and the phenomenon of parking effects, so this part has great limitations in terms of overall strength, service life and storage.

Method used

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  • A kind of preparation method and application of aluminum alloy profiles
  • A kind of preparation method and application of aluminum alloy profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing an aluminum alloy profile, comprising the steps of:

[0048] (1) Prepare an aluminum alloy ingot, and the composition and mass percentage thereof contained in the aluminum alloy ingot are:

[0049] Si: 1.00%, Fe: 0.25%, Cu: 0.15%, Mn: 0.50%, Mg: 0.80%, Cr: 0.12%, Ni: 0.01%, Zn: 0.01%, Ti: 0.01%, the balance is Al and impurities;

[0050] (2) heating the aluminum alloy ingot in step (1) with a multi-rod hot shear furnace at a temperature of 480°C, heating the mold to 460°C, and heating the ingot holder to 420°C;

[0051] (3) Add the aluminum alloy ingot heated in step (2) into the heated ingot barrel for extrusion treatment, wherein the extrusion ratio λ is 30, the extrusion speed is 4m / min, and the outlet temperature is 530 ℃;

[0052] (4) On-line quenching treatment of the extruded aluminum alloy, controlling the product temperature after quenching to ≤50°C;

[0053] (5) Stretching and cutting to length the aluminum alloy product after the qu...

Embodiment 2

[0057] A method for preparing an aluminum alloy profile, comprising the steps of:

[0058] (1) Prepare an aluminum alloy ingot, and the composition and mass percentage thereof contained in the aluminum alloy ingot are:

[0059] Si: 1.20%, Fe: 0.15%, Cu: 0.12%, Mn: 0.55%, Mg: 0.95%, Cr: 0.08%, Ni: 0.005%, Zn: 0.006%, Ti: 0.006%, and the balance is Al and impurities;

[0060] (2) heating the aluminum alloy ingot in step (1) with a multi-rod hot shear furnace at a temperature of 500°C, heating the mold to 480°C, and heating the ingot holder to 460°C;

[0061] (3) Add the aluminum alloy ingot heated in step (2) into the heated ingot barrel for extrusion treatment, wherein the extrusion ratio λ is 60, the extrusion speed is 10m / min, and the outlet temperature is 550 ℃;

[0062] (4) Perform on-line quenching treatment on the extruded aluminum alloy, and control the product temperature after quenching to ≤50°C;

[0063] (5) Stretch and cut to length the aluminum alloy after the q...

Embodiment 3

[0066] A method for preparing an aluminum alloy profile, comprising the steps of:

[0067] (1) Prepare an aluminum alloy ingot, and the composition and mass percentage thereof contained in the aluminum alloy ingot are:

[0068] Si: 1.10%, Fe: 0.22%, Cu: 0.13%, Mn: 0.52%, Mg: 0.85%, Cr: 0.05%, Ni: 0.008%, Zn: 0.005%, Ti: 0.008%, and the balance is Al and impurities;

[0069] (2) heating the aluminum alloy ingot in step (1) at a temperature of 485°C using a multi-rod hot shear furnace, heating the mold to 465°C, and heating the ingot holder to 430°C;

[0070] (3) Add the aluminum alloy ingot heated in step (2) into the heated ingot barrel for extrusion treatment, wherein the extrusion ratio λ is 33.96, the extrusion speed is 3m / min, and the outlet temperature is 535 ℃;

[0071] (4) Perform on-line quenching treatment on the extruded aluminum alloy, and control the product temperature after quenching to ≤50°C;

[0072] (5) Stretch and cut to length the aluminum alloy after th...

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Abstract

The invention provides a preparation method and application of aluminum alloy profile. The production technology comprises the steps that (1) an aluminum alloy cast ingot is prepared; (2) the aluminumalloy cast ingot is heated; (3) extrusion treatment is conducted; (4) quenching treatment is conducted; and (5) aging treatment is conducted, wherein the aging treatment temperature is 175+ / -5 DEG C,and the aging treatment time is 5.5+ / -0.2 hours. The aluminum alloy cast ingot has the outstanding performance, and can be applied to aluminum alloy products for automobile production, electric powerindustry, rail traffic, communication equipment and machining of mechanical parts, the mechanical performance is excellent, the life is long, the mechanical performance is still qualified after the product is stored for 6 months and subjected to aging at the temperature of 175+ / -5 DEG C and for 5.5+ / -0.2 hours, the aluminum alloy profile has the good storage aging, and the technology is simple, economic and efficient.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to a method for preparing an aluminum alloy profile and an application thereof. [0002] technical background [0003] Aluminum alloy is an alloy material made by adding some alloying elements to pure aluminum, such as Al-Mn alloy developed by adding manganese element to pure aluminum, Al-Cu alloy developed by adding copper element to pure aluminum, and Al-Cu alloy developed by adding copper element to pure aluminum. Al~Cu~Mg series hard aluminum alloys were developed by adding copper and magnesium elements. Compared with other materials, aluminum alloy has excellent comprehensive properties, such as low density, superior corrosion resistance, good plasticity and processing performance, strong electrical and thermal conductivity, low temperature brittleness resistance and radiation resistance, etc. It is widely used in aviation, Aerospace, machinery manufacturing, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22F1/043
CPCC22C21/02C22F1/002C22F1/043
Inventor 李平何建国凌宏潘震泽袁国策胡伟
Owner CHONGQING ALUMINUM KING ALUMINUM CO LTD
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