一种高压压铸电机转子铸造铝合金及其制备方法

By limiting the Si and Fe ratio in the aluminum alloy of new energy vehicle motor rotors to form a specific phase, and combining high-pressure die casting and heat treatment, the balance between strength and conductivity was solved, resulting in a high-performance motor rotor material suitable for new energy vehicles.

CN120888815BActive Publication Date: 2026-07-17SHANDONG BOYUAN PRECISION MASCH CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG BOYUAN PRECISION MASCH CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing aluminum alloy rotors for new energy vehicle motors have low strength and insufficient hardness. Furthermore, adding Mg to increase strength reduces conductivity, making it difficult to meet the requirements of high speed and high conductivity.

Method used

By limiting the proportions of Si and Fe in Al, Al-Si phase, Al3Fe phase, Al5FeSi phase, etc. are formed, which hinders dislocation movement and improves strength and hardness. At the same time, the Mg content is controlled to maintain high conductivity. Combined with high-pressure die casting and heat treatment processes, the uniformity of microstructure is ensured.

Benefits of technology

It achieves a balance of high strength, good hardness and high conductivity, meeting the mechanical performance requirements of motor rotors for new energy vehicles. Moreover, the material cost is low, the manufacturing process is simple, and it is easy to apply on a large scale.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure BDA0005475733940000081
    Figure BDA0005475733940000081
  • Figure BDA0005475733940000091
    Figure BDA0005475733940000091
Patent Text Reader

Abstract

本申请公开了一种高压压铸电机转子铸造铝合金及其制备方法，属于电机转子材料技术领域。该高压压铸电机转子铸造铝合金，包括以下质量百分数的组分：Si 0.65～0.75wt％、Fe 0.6～0.7wt％、Ti≤0.03wt％、Ga≤0.03wt％、Zn≤0.03wt％、Cu≤0.03wt％、Mn≤0.01wt％、Mg≤0.01wt％、其他杂质≤0.35wt％、余量为Al。通过对元素的种类及各元素的质量百分数做出具体地限定，添加特定比例的Si和Fe在Al中，三者相互作用，能够形成Al‑Si相、Al3Fe相、Al5FeSi相以及Fe‑Si相，有利于提升合金的强度和硬度，提升铝合金的机械性能；同时又限定了Mg的添加，使得合金具有良好的导电率。
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • High-thermal-conductivity aluminum alloy material and method for preparing material through waste aluminum recycling

    CN109468497A