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Brushless DC motor and preparation technology thereof

A technology of brush DC motor and DC motor, which is applied in the field of brushless DC generator and its preparation technology, can solve the problems of poor heat conduction, high motor performance of the motor, and low mechanical performance, so as to suppress the nucleation of bubbles and improve the durability Good thermal performance and thermal conductivity

Active Publication Date: 2016-12-07
卓尔博(宁波)精密机电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of motor will vibrate during operation, and the working environment is sometimes harsh. It often works in high temperature, high humidity, or even acid-base corrosion environment. Therefore, the material of the motor needs to have strong strength and good thermal conductivity. Now Some motor materials generally use ordinary stainless steel or cast aluminum materials. The mechanical properties of ordinary materials are not high and easy to be damaged. Poor heat conduction will also cause the internal temperature of the motor to be too high and the performance of the motor will decrease.

Method used

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  • Brushless DC motor and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw materials for configuring required components: Mg0.6%, Si0.4%, Mn0.1%, Cr0.1%, Fe0.1%, Ti0.1%, Zr0.18%, Sc0.5%, balance For Al, the raw materials are mixed and melted into molten aluminum, and then refined, the refining temperature is 690°C, the refining agent is hexachloroethane and titanium dioxide with a mass ratio of 2.3:1, and the refining time is 20 minutes;

[0029] The refined aluminum liquid is dripped out through the nozzle, and the dropped aluminum liquid is blown down to a powder form with a gas with a pressure of 3Mpa. The direction of the gas blowing out is at an angle of 45° to the direction of the solution dripping;

[0030] Screen the powder to obtain a powder with a particle size distribution of 9%% below 2μm, 39%% between 2-4μm, 39%% between 4-6μm and 9% above 6μm, and then press the powder with a density of 2.4 g / cm 3 , in the atmosphere of protective gas, the temperature was raised to 595°C at a rate of 10°C / min, and then kept at a temperature ...

Embodiment 2

[0033] Raw materials for configuring required components: Mg0.9%, Si0.6%, Mn0.2%, Cr0.2%, Fe0.2%, Ti0.2%, Zr0.2%, Sc0.6%, the balance is Al, the ratio of Mg to Si in the aluminum alloy is 1.7:1, the raw materials are mixed, melted into aluminum liquid, and then refined, the refining temperature is 710°C, and the refining agent is hexachloroethane with a mass ratio of 2.5:1 and titanium dioxide, the refining time is 25 minutes;

[0034] The refined aluminum liquid is dripped out through the nozzle, and the dropped aluminum liquid is blown down to a powder form with a gas with a pressure of 4Mpa, and the gas blowing direction is at an angle of 60° to the solution dripping direction;

[0035] Screen the powder to obtain a powder with a particle size distribution of 9% below 2 μm, 39% at 2-4 μm, 39% at 4-6 μm, and 9% above 6 μm, and then press the powder with a density of 2.5 g / cm 3 , in the atmosphere of protective gas, the temperature was raised to 597°C at a rate of 13°C / min, ...

Embodiment 3

[0038] Raw materials for configuring required components: Mg0.8%, Si0.5%, Mn0.1%, Cr0.1%, Fe0.1%, Ti0.1%, Zr0.18%, Sc0.5%, balance For Al, the raw materials are mixed and melted into molten aluminum, and then refined, the refining temperature is 700°C, the refining agent is hexachloroethane and titanium dioxide with a mass ratio of 2.4:1, and the refining time is 22 minutes;

[0039] The refined aluminum liquid is dripped out through the nozzle, and the dropped aluminum liquid is blown down to a powder form with a gas with a pressure of 3Mpa. The gas blowing direction and the solution dripping direction form an angle of 50°;

[0040] Screen the powder to obtain a powder with a particle size distribution of 9% below 2 μm, 40% at 2-4 μm, 40% at 4-6 μm, and 11% above 6 μm, and then press the powder with a density of 2.45g / cm 3 , in the atmosphere of protective gas, the temperature was raised to 596°C at a rate of 12°C / min, then kept at a temperature of 30min, extruded into an i...

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Abstract

The invention provides a brushless DC motor and belongs to the electromechanical field. The brushless DC motor is made of aluminium alloy and comprises a shell, wherein the shell is composed of a first end cover and a second end cover; a stator assembly and a rotor connected with the stator assembly are arranged in the shell; the stator assembly is fixedly arranged on a first bearing and a second bearing; the aluminium alloy comprises the following components in mass percent: 0.45-0.9% of Mg, 0.2-0.6% of Si, 0.1-0.2% of Mn, 0.1-0.2% of Cr, 0.1-0.2% of Fe, 0.1-0.2% of Ti, 0.18-0.2% of Zr, 0.5-0.6% of Sc and the balance of Al. The brushless DC motor obtained through reasonable element matching and the smelting, sintering and electroplating technologies has high strength, abrasion resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of generators, in particular to a brushless DC generator and a preparation process thereof. Background technique [0002] Brushless DC motor consists of a motor body and a driver. It is a typical mechatronic product. Brushless DC motors are widely used, such as automobiles, tools, industrial control, automation, and aerospace. In order to reduce the moment of inertia, the brushless DC motor usually adopts a slender structure. The weight and volume of the brushless DC motor are much smaller than that of the brushed DC motor, and the corresponding moment of inertia can be reduced by about 39%-50%. This kind of motor has good linearity in mechanical characteristics and adjustment characteristics, wide range of speed regulation, long life, easy maintenance and low noise, and there is no series of problems caused by brushes, so this kind of motor has a great role in the control system. application potential. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C21/08B22F3/02B22F3/20B22F9/08C25D15/00H02K5/02
CPCB22F3/02B22F3/20B22F9/082C22C1/06C22C21/08C25D15/00H02K5/02
Inventor 王成勇
Owner 卓尔博(宁波)精密机电股份有限公司
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