Corrosion-resisting motor rotor shaft

A technology of motor rotor shaft and motor rotor, which is applied to electric components, electrical components, electromechanical devices, etc., can solve the problems of reduced motor performance, inability to use, and not available, and achieves good corrosion resistance and improved service life.

Inactive Publication Date: 2012-07-04
天津科密尔铁芯有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon steel has poor corrosion resistance and cannot be directly used on pumps, mixers, fans and corresponding equipment working in corrosive environments
If the motor rotor shaft is made of stainless steel, although the corrosion resistance problem can be solved, the magnetic flux of the motor rotor is affected due to the non-magnetic conduction of stainless steel, which reduces the performance of the motor
For the above two contradictory problems, it is still not well resolved.

Method used

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  • Corrosion-resisting motor rotor shaft
  • Corrosion-resisting motor rotor shaft

Examples

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Embodiment Construction

[0008] like figure 1 As shown, a corrosion-resistant motor rotor shaft is composed of a front shaft 1 and a rear shaft 2. The front shaft 1 is the shaft body at the front end of the motor rotor 3 and is made of stainless steel. Rear axle 2 is made of carbon steel, generally adopts No. 45 steel. The entire rotor shaft is welded by the front shaft 1 and the rear shaft 2. The welding seam 5 of the front shaft 1 and the rear shaft 2 can be between the motor rotor 3 and the front bearing 4, or at the front end of the front bearing 4. It can be no less than 10mm Place (as shown in Figure 2), specifically where is more suitable, depending on the size of the pump body, it is better to make the front axle 1 with the part in contact with the fluid. The chamfer of the welding seam 5 between the front axle 1 and the rear axle 2 is 7-170 degrees, generally 60-120 degrees.

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PUM

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Abstract

The invention relates to a corrosion-resisting motor rotor shaft which consists of a front shaft and a rear shaft, wherein the front shaft is a shaft body at the front end of a motor rotor and is made of stainless steel, the rear shaft is made of carbon steel, the front shaft and the rear shaft are connected through welding, and the welding seam of the front shaft and the rear shaft can be positioned between the motor rotor and a front bearing or at a position away from less than 12mm from the front end of the front bearing. The corrosion-resisting motor rotor shaft has the beneficial effects that the structural scheme does not affect the quantity of magnetism of the motor rotor, the problems in the prior art can be well solved, a corrosion-resisting function can be achieved and the service life of the motor rotor shaft can be remarkably prolonged. The corrosion-resisting motor rotor shaft is suitable for pumps working with corrosive substances.

Description

technical field [0001] The invention relates to motor accessories, in particular to a non-corrodible motor rotor shaft, which is suitable for motors working on corrosive objects. Background technique [0002] As we all know, the motor is a general-purpose machine that converts electrical energy into mechanical energy, and it has a wide range of uses. However, since the magnetic flux of the motor rotor is an important parameter to determine the performance of the motor, the motor rotor shaft is made of magnetically conductive carbon steel. However, carbon steel has poor corrosion resistance and cannot be directly used on pumps, mixers, fans and corresponding equipment that work in corrosive environments. If stainless steel is used to manufacture the motor rotor shaft, although the corrosion resistance problem can be solved, the magnetic flux of the motor rotor is affected due to the non-magnetic conduction of stainless steel, which reduces the performance of the motor. For ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/22H02K5/12
Inventor 崔兆路
Owner 天津科密尔铁芯有限公司
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