行业组件数据 · 2026

转子轭部

繁體:轉子軛部

转子轭部,又称转子磁轭或转子铁芯,是电机和发电机转子的关键部件,为永磁体或绕组提供结构支撑,并作为低磁阻的磁通路径。

技术定义与适配语境
典型 转子轭部 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

转子轭部,又称转子磁轭或转子铁芯,是电机和发电机转子的关键部件。它作为结构骨架,支撑永磁体或绕组,同时为磁通提供低磁阻路径。该部件通常由叠压的电工钢片制成,以减小涡流损耗并提高效率。在永磁电机中,轭部增强磁通集中,防止漏磁,直接影响转矩密度和电机整体性能。 转子轭部基于电磁原理工作,为永磁体或转子绕组产生的磁通提供高磁导率路径。它使磁通在转子结构中集中,减小磁路中的磁阻,并在旋转过程中承受机械力。通过完成转子磁极之间的磁路,实现电能与机械能的高效转换。

组件规格

定义
转子轭部,又称转子磁轭或转子铁芯,是电机和发电机转子的关键部件。它作为结构骨架,支撑永磁体或绕组,同时为磁通提供低磁阻路径。该部件通常由叠压的电工钢片制成,以减小涡流损耗并提高效率。在永磁电机中,轭部增强磁通集中,防止漏磁,直接影响转矩密度和电机整体性能。

转子轭部基于电磁原理工作,为永磁体或转子绕组产生的磁通提供高磁导率路径。它使磁通在转子结构中集中,减小磁路中的磁阻,并在旋转过程中承受机械力。通过完成转子磁极之间的磁路,实现电能与机械能的高效转换。
工作原理
The rotor back iron operates on electromagnetic principles by providing a high-permeability path for magnetic flux generated by permanent magnets or rotor windings. It concentrates magnetic flux through the rotor structure, minimizes magnetic reluctance in the circuit, and supports mechanical forces during rotation. By completing the magnetic circuit between rotor poles, it enables efficient energy conversion between electrical and mechanical forms.
材料
电工钢叠片(通常为M19、M36或M43牌号)硅钢合金(硅含量3-4%)冷轧无取向电工钢(CRNO)特殊应用场合偶尔使用软磁复合材料(SMC)。厚度范围为0.35mm至0.65mm并带有绝缘涂层以减小涡流。
Core Loss
<4.0 W/kg at 1.5T, 50Hz
Permeability
>1500 μr
Stack Length
20-150mm typical
Material Grade
M19, M36, M43
Outer Diameter
50-300mm typical
Stacking Factor
0.95-0.97
Lamination Thickness
0.35-0.65mm
Insulation Resistance
>100 MΩ
标准
ISO 683-17IEC 60404-8-7ASTM A677DIN EN 10106

行业分类与别名

转子轭部 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Insufficient material thickness or poor material selection->Magnetic saturation resulting in reduced torque and efficiency->Proper material specification with adequate saturation flux density, finite element analysis (FEA) for magnetic circuit design
Poor lamination insulation or manufacturing defects->Increased eddy current losses leading to overheating and reduced efficiency->Quality control of insulation coatings, proper stacking pressure during assembly, electrical testing of completed cores
Inadequate mechanical design or material fatigue->Structural deformation or cracking at high rotational speeds->Mechanical stress analysis, proper material selection for fatigue resistance, balanced rotor design

工业生态与工程逻辑

0
Magnetic saturation leading to reduced efficiency
1
Eddy current losses causing overheating
2
Mechanical deformation under high rotational speeds
3
Corrosion in harsh environments
4
Delamination of steel sheets

合规与检测

tolerance
±0.05mm for critical dimensions, ±0.1° for angular alignment, surface roughness Ra ≤ 1.6μm
test method
Magnetic flux density testing using gaussmeters, core loss measurement with Epstein frame, dimensional verification with CMM, insulation resistance testing at 500VDC

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary function of rotor back iron in electric motors?

The rotor back iron serves two main functions: providing mechanical support for rotor components and completing the magnetic circuit by offering a low-reluctance path for magnetic flux, which enhances motor efficiency and torque production.

Why is electrical steel laminated for rotor back iron construction?

Electrical steel is laminated into thin sheets (typically 0.35-0.65mm) to minimize eddy current losses that occur when the rotor rotates in the magnetic field. The laminations are insulated from each other to break up circulating currents, significantly improving motor efficiency.

How does rotor back iron design affect motor performance?

Proper rotor back iron design directly impacts torque density, efficiency, and thermal performance. Optimal thickness, material selection, and geometric design minimize magnetic saturation, reduce losses, and prevent excessive heating during operation.

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CNFX Industrial Component Index · 电气设备制造

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