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Large-section aluminium alloy section for car doors/windows and manufacturing process of large-section aluminium alloy section

A technology of aluminum alloy profile and manufacturing process, which is applied in the direction of vehicle parts, metal layered products, upper structure sub-assembly, etc., can solve the problems of high cost and heat treatment energy consumption, and achieve the reduction of use cost, increase of production efficiency, energy The effect of low consumption

Active Publication Date: 2015-07-22
CHENGDU SUNSHINE ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the strength of general aluminum alloy is not as good as that of steel, in the process of manufacturing body profiles, continuous annealing treatment is required to improve its strength, but the cost of continuous production and heat treatment energy consumption are relatively large. The proportion of applications on automobile bodies is increasing, so it is imperative to develop new aluminum alloy materials

Method used

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  • Large-section aluminium alloy section for car doors/windows and manufacturing process of large-section aluminium alloy section

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Experimental program
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Effect test

Embodiment 1

[0029] like figure 1 As shown, the aluminum alloy profiles for large-section automobile doors and windows comprise an aluminum alloy substrate 1, a paint coating 2, a varnish coating 3 and a protective layer 4, and the aluminum alloy substrate 1 is coated with a paint coating 2. A layer of varnish coating 3 is coated on the top of the paint coating 2 , and a protective layer 4 is covered on the surface of the varnish coating 3 .

[0030] The thickness of the color paint coating is in the range of 50 μm to 70 μm.

[0031] The paint coating 2 is an ultraviolet photocuring paint coating, and the varnish coating 3 is an ultraviolet photocuring varnish coating.

[0032] The thickness of the protective layer 4 is 10 μm-20 μm.

[0033] A manufacturing process for aluminum alloy profiles for large-section automobile doors and windows, which includes the following steps:

[0034] S1. Preparation of aluminum alloy: 6063 alloy is used, and its composition mass percentage is: Mg: 0.45%...

Embodiment 2

[0046] Its structure is with embodiment 1.

[0047] A manufacturing process for aluminum alloy profiles for large-section automobile doors and windows, which includes the following steps:

[0048] S1. Preparation of aluminum alloy: 6063 alloy is used, and its composition mass percentage is: Mg: 0.7%, Si: 0.4%, Cu: 0.1%, Fe: 0.35%, Mn: 0.1%, Zn: 0.1%, Ti: 0.1% , and the rest are Al;

[0049] S2. Casting rod smelting: Put the prepared aluminum alloys into the melting furnace for smelting in turn. The temperature in the furnace is controlled at 790°C, and the refining agent is used for refining treatment. The temperature in the furnace is adjusted to 760°C, and the refining agent is used for refining. Refining treatment, slag removal, heat preservation for 0.75h, and slow cooling to room temperature to obtain aluminum alloy bars;

[0050] S3. Heat treatment strengthening: Put the aluminum alloy bar into the heating furnace, heat up to 440°C at a rate of 25°C / min, keep it warm f...

Embodiment 3

[0060] Its structure is with embodiment 1.

[0061] A manufacturing process for aluminum alloy profiles for large-section automobile doors and windows, which includes the following steps:

[0062] S1. Preparation of aluminum alloy: 6063 alloy is used, and its composition mass percentage is: Mg: 0.9%, Si: 0.2%, Cu: 0.1%, Fe: 0.35%, Mn: 0.1%, Zn: 0.1%, Ti: 0.1% , and the rest are Al;

[0063] S2. Casting rod smelting: Put the prepared aluminum alloys into the melting furnace in turn for smelting. The temperature in the furnace is controlled at 780°C to 800°C. Refining treatment is carried out with a refiner, and the temperature in the furnace is adjusted to 740°C. The refining agent is subjected to refining treatment, slag removal, heat preservation for 1 hour, and slow cooling to room temperature to obtain aluminum alloy bars;

[0064] S3. Heat treatment strengthening: Put the aluminum alloy bar into the heating furnace, heat up to 450°C at a rate of 30°C / min, keep it warm fo...

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Abstract

The invention relates to a large-section aluminium alloy section for car doors / windows. The large-section aluminium alloy section comprises an aluminium alloy substrate (1), a colored lacquer coating (2), a varnish coating (3) and a protective layer (4), wherein the aluminium alloy substrate (1) is coated with the colored lacquer coating (2); the colored lacquer coating (2) is coated with the varnish coating (3); and the surface of the varnish coating (3) is coated with the protective layer (4). The manufacturing process of the large-section aluminium alloy section comprises the following steps: S1, aluminium alloy preparing; S2, casting rod smelting; S3, heat treatment enhancing; S4, the rod pretreating forming pretreating; S5, die preparing; S6, extrusion forming S7, on-line quenching; S8, aging treatment; S9, coating and drying to obtain a finished product. The large-section aluminium alloy section and the manufacturing process have the advantages that 6063 alloy is subjected to smelting, heat treatment enhancing, quenching and aging and other treatment, so that the plasticity and the strength are improved greatly, the original advantages of light weight and corrosion resistance of the aluminium alloy are kept, the production efficiency is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of manufacturing automobile doors and windows, in particular to an aluminum alloy profile for large-section automobile doors and windows and a manufacturing process thereof. Background technique [0002] After decades of construction, China's automobile industry has begun to take shape, and automobile production has increased significantly. Especially after joining the WTO, instead of being wiped out as many people feared, China's automobile industry has relied on the capital of the international automobile industry and technology, achieved a great leap, China will be the world's largest and fastest growing auto market in the next 5 to 10 years, which has been generally recognized by the international industry. At present, many major international automobile manufacturers have come to China to establish joint ventures and continue to increase investment in China, showing a strong willingness to invest. For e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D25/00B32B15/04B21C37/00C22C21/08C22F1/047
Inventor 廖健
Owner CHENGDU SUNSHINE ALUMINUM