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Motor rotor aluminum alloy for new energy automobile and preparation method of motor rotor aluminum alloy

A new energy vehicle, aluminum alloy technology, applied in the direction of motors, electric vehicles, vehicle parts, etc., can solve the problems of rotor motors that are difficult to meet performance requirements, become thinner, and aluminum strips are broken, so as to achieve increased strength and increased composition Effect of supercooling and improving alloy strength

Pending Publication Date: 2022-08-09
聊城市博源节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the flow of aluminum liquid is not smooth when casting aluminum, the aluminum bars in the cast aluminum rotor slots will be broken or thinned, making it difficult for ordinary rotor motors (motors whose rotor bar material is pure aluminum) to meet performance requirements

Method used

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  • Motor rotor aluminum alloy for new energy automobile and preparation method of motor rotor aluminum alloy
  • Motor rotor aluminum alloy for new energy automobile and preparation method of motor rotor aluminum alloy
  • Motor rotor aluminum alloy for new energy automobile and preparation method of motor rotor aluminum alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of an aluminum alloy for a motor rotor for a new energy vehicle comprises the following steps:

[0030] (1) Heat the aluminum ingot to 755°C in a melting furnace, add 0.5 wt % Fe, 0.2 wt % Cu, 0.05 wt % Yb element and 0.1 wt % Er element, and after it is completely melted, a melt is obtained ;

[0031] (2) Maintain the melt temperature at 740°C, and use the method of rotating nitrogen injection to carry out refining treatment. During the refining process, adjust the air blowing amount to ensure that the melt level is stable. The refining time is 20 minutes. ;

[0032] (3) Preheat the centrifugal casting mold at 725°C, set the rotational speed to 250r / min, and perform casting with a casting temperature of 720°C; after solidification, the casting equipment stops rotating, and the casting is naturally cooled to room temperature to obtain a new energy vehicle Aluminum alloy with motor rotor.

Embodiment 2

[0034] A preparation method of an aluminum alloy for a motor rotor for a new energy vehicle comprises the following steps:

[0035] (1) heating the aluminum ingot to 770°C in a smelting furnace, adding 0.6wt% Fe, 0.3wt% Cu and 0.08wt% Yb element, and after it is completely melted, a melt is obtained;

[0036] (2) maintaining the melt temperature at 750 ℃, adopting hexachloroethane that accounts for 0.7% of the melt mass to carry out refining treatment, the refining time is 10min, and the slag is removed after refining, and it is left to stand for more than 30min;

[0037] (3) Preheat the centrifugal casting mold at 740°C, set the rotational speed to 200r / min, and perform casting with a casting temperature of 730°C; after solidification, the casting equipment stops rotating, and the casting is naturally cooled to room temperature to obtain a new energy vehicle Aluminum alloy with motor rotor.

Embodiment 3

[0039] A preparation method of an aluminum alloy for a motor rotor for a new energy vehicle comprises the following steps:

[0040] (1) heating the aluminum ingot to 740°C in a smelting furnace, adding 0.4wt% of Fe, 0.1wt% of Cu and 0.15wt% of Er elements, and after it is completely melted, a melt is obtained;

[0041] (2) Maintain the melt temperature at 730°C, and use the method of rotating nitrogen injection to carry out refining treatment. During the refining process, adjust the amount of air blowing to ensure that the melt level is stable. The refining time is 30 minutes. After refining, the slag is removed and left standing for more than 30 minutes. ;

[0042] (3) Preheat the centrifugal casting mold at 710°C, set the rotational speed to 300r / min, and perform casting with a casting temperature of 710°C; after solidification, the casting equipment stops rotating, and the casting is naturally cooled to room temperature to obtain a new energy vehicle Aluminum alloy with mo...

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Abstract

The invention discloses a motor rotor aluminum alloy for a new energy automobile and a preparation method of the motor rotor aluminum alloy, and belongs to the technical field of new energy automobile motor rotor materials. The motor rotor aluminum alloy for the new energy automobile comprises the following components in percentage by mass: 0.4-0.6 wt% of Fe, 0.1-0.3 wt% of Cu, 0.02-0.23 wt% of heavy rare earth elements and the balance of Al. The motor rotor aluminum alloy for the new energy automobile, provided by the invention, has excellent mechanical properties.

Description

technical field [0001] The application relates to an aluminum alloy for a motor rotor of a new energy vehicle and a preparation method thereof, and belongs to the technical field of motor rotor materials for a new energy vehicle. Background technique [0002] New energy vehicles refer to the use of unconventional vehicle fuels as the power source (or the use of conventional vehicle fuels, the use of new vehicle power units), and the integration of advanced technologies in vehicle power control and drive. Structure of the car. The motor is mainly composed of a stator and a rotor, and the rotor is cast from metals such as aluminum and copper. The rotor is one of the key factors in determining the efficiency of the motor, and the material of the cast rotor is even more critical. [0003] Compared with other materials, aluminum alloys have become the key materials for new energy vehicle motor rotors due to their light weight, corrosion resistance, high specific strength, easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02B22D13/04
CPCC22C21/00C22C1/026B22D13/04Y02T10/64
Inventor 郑广会赵培振陆松温春国
Owner 聊城市博源节能科技有限公司
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