New energy automobile battery tray high-strength aluminum alloy sectional material and preparation method thereof

A technology of aluminum alloy profiles and new energy vehicles, which is applied in the field of aluminum alloy materials, can solve the problems of high-quality battery trays, poor tensile strength and yield strength of aluminum alloy profiles, and poor corrosion resistance, so as to avoid corrosion of equipment, Effect of improving surface quality and improving strength

Active Publication Date: 2020-06-26
FUJIAN MINFA ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in view of the above content, the present invention provides a high-strength aluminum alloy profile for a new energy vehicle battery tray and its preparation method, which solves the problem of poor tensile strength, yield strength or corrosion resistance of the existing aluminum alloy profile, which is difficult to meet the requirements of high-quality batteries. The question of pallet requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-strength aluminum alloy profile for a new energy vehicle battery tray, the aluminum alloy profile is composed of the following chemical components in mass percentages: Si: 0.65%, Mg: 0.48%, Zn: 0.35%, Fe: 0.10%, Cu: 0.15 %, Zr: 0.03%, La: 0.07%, Mo: 0.03%, Mn: 0.05%, Ti: 0.04%, Cr: 0.01%, Al: 98.04%.

[0033] The preparation method of the high-strength aluminum alloy profile of the new energy automobile battery tray includes the following steps:

[0034] (1) Melting:

[0035] Put the prepared raw materials into the smelting furnace for smelting, melting into a uniform melt, the smelting temperature is 735°C, and the smelting time is 4h;

[0036] (2) Refining:

[0037] 50% N 2 +30%Ar+20%CO mixed gas for the first refining, the mixed gas flow rate is 3.2L / min, the refining time is 8min, after removing the slag, let it stand for 25min, and then add 0.25% of the total mass of aluminum alloy profiles for zinc chloride For the second refining, after 30 minutes of r...

Embodiment 2

[0049] A high-strength aluminum alloy profile for a new energy vehicle battery tray, the aluminum alloy profile is composed of the following chemical components in mass percentage: Si: 0.72%, Mg: 0.54%, Zn: 0.3%, Fe: 0.08%, Cu: 0.20 %, Zr: 0.04%, Y: 0.05%, Mo: 0.05%, Mn: 0.06%, Ti: 0.03%, Cr: 0.03%, Al: 97.9%.

[0050] The preparation method of the high-strength aluminum alloy profile of the new energy automobile battery tray includes the following steps:

[0051] (1) Melting:

[0052] Put the prepared raw materials into the smelting furnace for smelting, melting into a uniform melt, the smelting temperature is 740°C, and the smelting time is 3.5h;

[0053] (2) Refining:

[0054] Into 55% N 2 +35%Ar+10%CO mixed gas for the first refining, the mixed gas flow rate is 2.8L / min, the refining time is 10min, after slag removal, let it stand for 30min, and then add 0.4% yttrium chloride of the total mass of the aluminum alloy profile to carry out For the second refining, after 25 m...

Embodiment 3

[0066] A high-strength aluminum alloy profile for a new energy vehicle battery tray, the aluminum alloy profile is composed of the following chemical components in mass percentage: Si: 0.8%, Mg: 0.6%, Zn: 0.4%, Fe: 0.06%, Cu: 0.25 %, Zr: 0.02%, Ce: 0.06%, Mo: 0.06%, Mn: 0.04%, Ti: 0.035%, Cr: 0.02%, Al: 97.655%.

[0067] The preparation method of the high-strength aluminum alloy profile of the new energy automobile battery tray includes the following steps:

[0068] (1) Melting:

[0069] Put the prepared raw materials into the smelting furnace for smelting, melting into a uniform melt, the smelting temperature is 745°C, and the smelting time is 3h;

[0070] (2) Refining:

[0071] Into 60% N 2 +25%Ar+15%CO mixed gas for the first refining, the mixed gas flow rate is 2.4L / min, the refining time is 12min, after slag removal, let it stand for 35min, and then add 0.5% manganese chloride of the total mass of aluminum alloy profiles for refining For the second refining, after 20 ...

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Abstract

The invention relates to the technical field of aluminum alloy materials and provides a new energy automobile battery tray high-strength aluminum alloy sectional material and a preparation method thereof. The problems that an aluminum alloy sectional material in the prior art is poor in tensile strength, yield strength or corrosion resistance and cannot meet the requirement for high-quality battery trays are solved. The aluminum alloy sectional material comprises chemical components: by mass, 0.65-0.8% of Si, 0.48-0.6% of Mg, 0.3-0.4% of Zn, 0.06-0.10% of Fe, 0.15-0.25% of Cu, 0.02-0.04% of Zr, 0.05-0.07% of rare earth elements, 0.03-0.06% of Mo, 0.04-0.06% of Mn, 0.03-0.04% of Ti, 0.01-0.03% of Cr, and the balance Al. The preparation method comprises the following steps of (1) smelting; (2) refining; (3) casting; (4) homogenizing treatment; (5) extrusion; (6) solid solution quenching; and (7) aging treatment.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to a high-strength aluminum alloy profile for a new energy vehicle battery tray and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, the energy problem is becoming more and more urgent, and the environmental problems caused by automobiles are also becoming more and more serious. Developing the new energy vehicle industry is an effective way to alleviate the energy crisis, reduce greenhouse gas emissions, and reduce environmental pollution. At present, new energy vehicles have become an important direction for the transformation of the automotive industry. As the power source of new energy vehicles, the battery is the most important part of the vehicle, and it is also a symbolic part that distinguishes it from other traditional fuel vehicles. If the heart of a traditional fuel vehicle is the engine, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/06C22F1/043B21C37/00
CPCB21C37/00C22C1/026C22C1/06C22C21/02C22F1/002C22F1/043
Inventor 黄长远张志勇
Owner FUJIAN MINFA ALUMINUM
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