Production method of aluminum alloy motor shell for new energy automobile

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...

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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 alloy motor housing for automobiles, the production method uses aluminum alloy horizontal extrusion machine for hot extrusion production, through the adjustment and control of chemical element content, mold, process and other aspects, so that the final production of aluminum alloy motor The shell meets the customer's assembly requirements

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