Production method of aluminum alloy motor shell for new energy automobile

A technology for new energy vehicles and production methods, which is applied in the field of production of aluminum alloy motor casings for new energy vehicles, can solve difficult problems, and achieve the effects of improved formability, smooth surface, and good corrosion resistance

Active Publication Date: 2018-11-06
CHINA ZHONGWANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a new energy source in order to solve the problem that the existing motor casing production method is difficult to produce an aluminum alloy casing with complex structure, high dimensional accuracy, good surface quality and high mechanical properties. The production method of aluminum

Method used

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  • Production method of aluminum alloy motor shell for new energy automobile
  • Production method of aluminum alloy motor shell for new energy automobile
  • Production method of aluminum alloy motor shell for new energy automobile

Examples

Experimental program
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Embodiment 1

[0027] A method for producing an aluminum alloy motor case for a new energy vehicle, comprising the steps of:

[0028] A. Calculate the amount of each aluminum alloy raw material and prepare the aluminum alloy raw material according to the ratio. The ratio of the mass percentage of each element of the aluminum alloy raw material is as follows:

[0029]

[0030] Add the prepared aluminum alloy raw materials into the smelting furnace and mix them evenly, then melt them into liquid aluminum alloys, and melt and cast the liquid aluminum alloys into aluminum alloy ingots. Two-stage ceramic sheets are used for filtration, and Al-Ti-B wire refiner is added during the smelting process to refine the grains;

[0031] B. Carry out homogenization treatment to the aluminum alloy ingot obtained in step A. The temperature of the homogenization treatment is 450° C., and the holding time is 15 hours. The surface of the homogenized aluminum alloy ingot is sawed to reduce the amount of alumin...

Embodiment 2

[0037] The difference between embodiment 2 and embodiment 1 is that the mass percentage ratio of each element of the aluminum alloy raw material in step A is as follows:

[0038]

Embodiment 3

[0040] The difference between Example 3 and Example 1 is that the temperature of the homogenization treatment in Step B is 470° C., and the holding time is 12 hours.

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Abstract

The invention belongs to the technical field of motor shell manufacturing and relates to a production method of an aluminum alloy motor shell for a new energy automobile. Aluminum alloy is composed of0.40-0.60% of Si, less than or equal to 0.20% of Fe, less than or equal to 0.10% of Cu, less than or equal to 0.10% of Mn, 0.35-0.60% of Mg, less than or equal to 0.1% of Ti, less than or equal to 0.05% of Cr, less than or equal to 0.15% of Zn, less than or equal to 0.05% of other single impurity and the balance of Al, wherein the impurities in total are less than or equal to 0.15%. Performance of the aluminum alloy motor shell which is prepared finally is enabled to reach requirements on mechanics and size of the motor shell by regulating alloy ingredient content, optimizing die structure and controlling extrusion process, quenching mode and prescription system, and normal delivery of the aluminum alloy motor shell can be completed through simple processing later.

Description

technical field [0001] The invention belongs to the technical field of motor casing manufacturing, and relates to a production method of an aluminum alloy motor casing for a new energy vehicle. Background technique [0002] Due to the demand for energy saving and emission reduction, the motor housing is an important part of the motor drive system of new energy vehicles. Its material is replaced by aluminum alloy for cast iron, which not only reduces the weight of the vehicle itself, but also improves the heat dissipation effect of the motor. Aluminum alloy motor casing has light weight, high strength, good heat dissipation and corrosion resistance. The traditional aluminum alloy motor shell is produced by casting molding method, and the product is prone to defects such as segregation and sand holes, and the uniformity is not good; after casting, the turning process is complicated, and the dimensional accuracy cannot be guaranteed by increasing the production steps. The assem...

Claims

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Application Information

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IPC IPC(8): C22F1/05C22C21/08C22C21/02C22C1/02
CPCC22C1/026C22C21/02C22C21/08C22F1/002C22F1/05
Inventor 刘勇凯王睿李延军王爽冯小东徐宁王志永蒋鑫伟李响
Owner CHINA ZHONGWANG
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