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Al-Zn-Fe series motor rotor alloy and preparation method and application thereof

A motor rotor and alloy technology, which is applied in the field of new energy vehicle motor rotor materials, can solve the problem that rotor alloys cannot take into account excellent high temperature creep resistance and mechanical properties at the same time, and achieve increased diffusion activation energy, good anti-crack properties, The effect of improving toughness

Active Publication Date: 2022-07-29
SHANDONG BOYUAN PRECISION MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above problems, an Al-Zn-Fe series motor rotor alloy and its preparation method and application are provided. By optimizing the alloy composition and its treatment process, it solves the problem that the new energy vehicle motor rotor alloy in the prior art cannot take into account the excellent performance at the same time. Problems of high temperature creep resistance and mechanical properties

Method used

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  • Al-Zn-Fe series motor rotor alloy and preparation method and application thereof

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Effect test

Embodiment 1

[0026] An Al-Zn-Fe series motor rotor alloy comprises the following components in mass percentage: Zn: 0.5%, Fe: 0.4%, Si: 0.1%, and the balance is Al.

[0027] The preparation method of the Al-Zn-Fe series motor rotor alloy comprises the following steps:

[0028] (1) According to the composition ratio of the Al-Zn-Fe series motor rotor alloy, add zinc-containing material, iron-containing material and aluminum-containing material into the smelting furnace, and smelt at 710 ° C to obtain a molten liquid;

[0029] (2) adding Si to step (1) molten liquid, then adding melt mass 0.5wt% nitrogen gas to carry out melt refining treatment, refining temperature is 740 ℃, treatment time is 10min;

[0030] (3) The melt was allowed to stand for more than 30 min, and cast at 715° C., and centrifugal casting treatment was performed, and the centrifugal casting speed was 300 r / min to obtain an Al-Zn-Fe motor rotor alloy.

Embodiment 2

[0032] An Al-Zn-Fe series motor rotor alloy comprises the following components in mass percentage: Zn: 1.8%, Fe: 0.2%, Si: 0.3%, and the balance is Al.

[0033] The preparation method of the Al-Zn-Fe series motor rotor alloy comprises the following steps:

[0034] (1) According to the composition ratio of the Al-Zn-Fe series motor rotor alloy, add zinc-containing material, iron-containing material and aluminum-containing material into the smelting furnace, and smelt at 750 ° C to obtain a molten liquid;

[0035] (2) adding Si to step (1) molten liquid, then adding melt mass 0.8wt% hexachloroethane to carry out melt refining treatment, refining temperature is 720 ℃, treatment time 30min;

[0036] (3) The melt was allowed to stand for more than 30 minutes, cast at 730° C., and centrifugally cast with a rotational speed of 200 r / min to obtain an Al-Zn-Fe-based motor rotor alloy.

Embodiment 3

[0038] An Al-Zn-Fe series motor rotor alloy comprises the following components in mass percentage: Zn: 2.0%, Fe: 0.1%, Cu: 0.6%, and the balance is Al.

[0039] The preparation method of the Al-Zn-Fe series motor rotor alloy comprises the following steps:

[0040] (1) According to the composition ratio of the Al-Zn-Fe series motor rotor alloy, add zinc-containing material, iron-containing material and aluminum-containing material into the smelting furnace, and smelt at 730 ° C to obtain a molten liquid;

[0041] (2) adding Cu to the molten liquid in step (1), then adding 1wt% argon gas of the melt mass to carry out melt refining treatment, the refining temperature is 740°C, and the treatment time is 20min;

[0042] (3) The melt is allowed to stand for more than 30 minutes, cast at 720° C., centrifugally casted, and the rotational speed of centrifugal casting is 240r / min to obtain an Al-Zn-Fe series motor rotor alloy.

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Abstract

The invention discloses an Al-Zn-Fe series motor rotor alloy and a preparation method and application thereof, and belongs to the technical field of new energy automobile motor rotor materials. The invention relates to an Al-Zn-Fe series motor rotor alloy, which comprises the following components in percentage by mass: 0.5 to 2.0 percent of Zn, 0.1 to 0.4 percent of Fe, 0.1 to 1.0 percent of IVA or IB group elements and the balance of Al. According to the Al-Zn-Fe series motor rotor alloy, by optimizing alloy components and a treatment process thereof, the problem that in the prior art, a new energy automobile motor rotor alloy cannot give consideration to excellent high-temperature creep resistance and mechanical property at the same time is solved.

Description

technical field [0001] The application relates to an Al-Zn-Fe series motor rotor alloy, a preparation method and application thereof, and belongs to the technical field of new energy vehicle motor rotor materials. 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), the integration of advanced technologies in vehicle power control and driving, and the formation of advanced technical principles. New technology, new structure of the car. After the motor rotor has been in service for a long time, the fatigue damage in the high temperature and low stress area is relatively large, and the long-term high temperature cyclic alternating load will have a great impact on the fatigue performance of the rotor, and the rotor generally has heating conditions. It will cause low cycle fatigue and creep loss of the rotor, and may even lead to safe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/06C22C21/10C22C21/18H02K1/22H02K15/02
CPCC22C1/026C22C1/06C22C21/10C22C21/18H02K1/22H02K15/02Y02T10/64
Inventor 郑广会赵培振陆松郑世玉
Owner SHANDONG BOYUAN PRECISION MASCH CO LTD
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