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High-performance aluminum alloy ingot for electric vehicle and preparation method

An aluminum alloy ingot and high-performance technology, which is applied in the field of high-performance aluminum alloy ingots for electric vehicles and their preparation, can solve the problems of poor fluidity, strict die-casting process requirements, and low yield, and achieve the effect of improving performance indicators.

Pending Publication Date: 2021-08-20
帅翼驰(河南)新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing electric vehicle aluminum alloy ingot adopts the ADC6 brand aluminum alloy ingot in the Japanese JIS 5032 standard, the magnesium content accounts for 2.5%-4.0%, and the silicon content accounts for less than 1%, resulting in poor fluidity after remelting of the alloy brand aluminum ingot , the defect rate of die-casting products is as high as more than 25%, the high proportion of magnesium content will cause a large loss in subsequent remelting, and the die-casting process after remelting is strict, and the yield is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing high-performance aluminum alloy ingots for electric vehicles, comprising the following steps:

[0030] S1, mix raw materials according to the composition of aluminum alloy;

[0031] S2, put the A00 aluminum ingot into the smelting furnace for melting, put other raw materials into the molten aluminum liquid when it reaches 650°C and perform preliminary stirring to obtain the aluminum alloy liquid;

[0032] S3, raising the temperature again to increase the temperature of the aluminum alloy liquid to 740°C, and then adding a refining agent to the aluminum liquid;

[0033] S4, refining the aluminum alloy liquid in an environment filled with argon;

[0034] S5, after refining, the aluminum alloy liquid is introduced into a standing furnace to stand still;

[0035] S6, after standing still, the temperature of the aluminum alloy liquid is raised to 730°C again, and then cast to obtain an aluminum alloy ingot.

[0036] Among them, the aluminum alloy in...

Embodiment 2

[0039] A method for preparing high-performance aluminum alloy ingots for electric vehicles, comprising the following steps:

[0040] S1, mix raw materials according to the composition of aluminum alloy;

[0041] S2, put the A00 aluminum ingot into the smelting furnace for melting, put other raw materials into the molten aluminum liquid when it reaches 700°C and perform preliminary stirring to obtain the aluminum alloy liquid;

[0042] S3, raising the temperature again to increase the temperature of the aluminum alloy liquid to 760°C, and then adding a refining agent to the aluminum liquid;

[0043] S4, refining the aluminum alloy liquid in an environment filled with argon;

[0044] S5, after refining, the aluminum alloy liquid is introduced into a standing furnace to stand still;

[0045] S6, after standing still, the temperature of the aluminum alloy liquid is raised to 740°C again, and then cast to obtain an aluminum alloy ingot.

[0046] Among them, the aluminum alloy in...

Embodiment 3

[0050] A method for preparing high-performance aluminum alloy ingots for electric vehicles, comprising the following steps:

[0051] S1, mix raw materials according to the composition of aluminum alloy;

[0052] S2. Put the A00 aluminum ingot into the melting furnace for melting. When it reaches 20°C, put other raw materials into the molten aluminum liquid and perform preliminary stirring to obtain the aluminum alloy liquid. After the A00 aluminum ingot is melted and reaches the temperature of T1, pass through the cloth The device puts the raw materials evenly into the melting furnace;

[0053] S3, raising the temperature again to increase the temperature of the aluminum alloy liquid to 750°C, and then adding a refining agent to the aluminum liquid. The refining agent includes sodium chloride, potassium chloride, lithium chloride, calcium oxide and dicarbon hexachloride;

[0054] S4, refining the aluminum alloy liquid in an environment full of argon, during refining, remove t...

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Abstract

The invention relates to the technical field of aluminum alloy preparation, in particular to a high-performance aluminum alloy ingot for an electric vehicle and a preparation method. By adjusting an existing aluminum alloy ingot formula, the magnesium content is greatly reduced, the silicon content is improved, the original performance can be met, the performance is higher than the original performance, and the performance index is improved; in the aspect of cost saving, the cost per ton can be saved by more than 200 yuan, the tensile strength is improved to 220 MPa from original 180 MPa and is improved by 22% through the adjustment of the new formula, the ductility is improved to 3% from original 2% and is improved by 50% through the adjustment of the new formula, and the hardness is improved to more than 65 from original 50 HB and is improved by 30% through the adjustment of the new formula; and the problems that the reject ratio of an existing aluminum alloy die-casting product is up to 25% or above, the follow-up remelting loss is large due to the high magnesium content proportion, the requirement for the die-casting technology after remelting is strict, and the yield is low are solved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a high-performance aluminum alloy ingot for electric vehicles and a preparation method thereof. Background technique [0002] At present, the automobile industry is developing rapidly, among which high-speed, energy-saving and comfortable electric vehicles are the focus of development, and aluminum alloy, as a necessary component, not only bears the weight of electric vehicles, but also is an integral part of the appearance of electric vehicles. Higher security requirements are required. [0003] The existing electric vehicle aluminum alloy ingot adopts the ADC6 brand aluminum alloy ingot in the Japanese JIS 5032 standard, the magnesium content accounts for 2.5%-4.0%, and the silicon content accounts for less than 1%, resulting in poor fluidity after remelting of the alloy brand aluminum ingot , The defect rate of die-casting products is as high as 25%, and th...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D7/00C22C1/02C22C1/06
CPCC22C21/02C22C1/026C22C1/06B22D7/005
Inventor 王果利于建乐赵聪马春健张秋德
Owner 帅翼驰(河南)新材料科技有限公司
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