Laminated iron core and manufacturing method therefor

A laminated iron core and manufacturing method technology, applied in the field of additive manufacturing, can solve problems such as deteriorating component performance, hindering system size miniaturization, reducing component power, etc., achieving reduced eddy current loss, improved grain orientation, and easy control Effect

Pending Publication Date: 2021-10-19
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current additive manufacturing technology can only be used to manufacture bulk magnetic cores, which have eddy current losses
Such eddy current loss will not only reduce the component power, but the heat generated by the eddy current can significantly deteriorate the performance of the component, and it will also hinder the miniaturization of the system

Method used

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  • Laminated iron core and manufacturing method therefor
  • Laminated iron core and manufacturing method therefor
  • Laminated iron core and manufacturing method therefor

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0024] The invention proposes a mechanism for manufacturing laminated iron cores by using additive manufacturing technology. Due to the adoption of additive manufacturing technology manufacturing process, the laminated iron cores are integrally formed without any intermediate assembly process.

[0025] The invention is preferably implemented in selective laser melting equipment. Among them, selective laser melting equipment is one of the additive manufacturing devices.

[0026] figure 2 is a schematic diagram of the selective laser melting apparatus. Such as figure 2 As shown, the selective laser melting apparatus 100 includes a laser source 110 , a mirror scanner 120 , a prism 130 , a powder feeding cylinder 140 , a forming cylinder 150 and a recovery cylinder 160 . Wherein, the laser source 110 is arranged above the selective laser melting d...

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Abstract

A laminated iron core manufacturing method is performed in an additive manufacturing printing apparatus, and includes the following steps: S1. feeding inert gas into the additive manufacturing printing apparatus, and performing laser scanning on silicon steel metal particles to start to melt the silicon steel metal particles from bottom to top layer by layer into a silicon steel metal layer; and S2. feeding treatment gas into the additive manufacturing printing apparatus, performing laser scanning on the silicon steel particles again to enable the treatment gas to react with the molten silicon steel metal particles to finally form an insulating nitride layer, and alternately performing the steps S1 and S2 till the laminated iron core of a structure having a plurality of alternate silicon steel metal layers and insulating nitride layers is formed. The method may manufacture a customized laminated iron core with a complex shape and good performance according to a requirement.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to a laminated iron core and a manufacturing method thereof. Background technique [0002] For electronics such as electric motors and power transformers, copper wire is usually wound around a soft ferromagnetic component, which has a high permeability to air to increase the magnetic flux. flux) to achieve high energy density and high efficiency (high strength and efficiency). [0003] Such as figure 1 As shown, in order to reduce the eddy current losses (eddy current losses) caused by the alternating magnetic field (fluctuating magnetic field), the laminated iron core 10 is made of silicon steel sheets covered with insulating films. The laminated core is usually used in power transformers and motor. Among them, the insulating film acts as a barrier for the eddy current, so that the eddy current only flows in a limited closed loop, that is, in figure 1 flow in the thickness...

Claims

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Application Information

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IPC IPC(8): B22F10/28B22F7/02B22F10/73B22F12/00B22F10/32B33Y10/00B33Y30/00B33Y80/00H02K15/00
CPCH02K15/00H02K15/02B33Y10/00H02K1/02B33Y50/02B33Y80/00B22F10/36B22F10/32B22F2999/00B22F10/73B22F10/28B22F10/366C22C33/0278Y02P10/25B22F12/44B22F10/38B22F12/70B22F3/101B22F2201/11B22F2201/02B22F3/1039B33Y70/00B22F12/49B22F12/41B22F2301/35B22F2302/20
Inventor 李长鹏张卿卿陈国锋卡特瑞娜·斯维纳连科
Owner SIEMENS AG
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