Treatment technique for acid washing surface of electronic rotor

A treatment process and a technology for motor rotors, which are applied in the field of pickling treatment process and motor rotor surface pickling treatment process, can solve the problems of increasing rotor core loss and load stray loss, reducing motor efficiency, reducing contact resistance, etc. Achieve the effect of reducing stray loss and improving efficiency

Active Publication Date: 2006-07-05
SHANGHAI ELECTRICAL APPLIANCES RES INSTGROUP
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, die-casting aluminum tends to reduce the contact resistance between the rotor cage and the iron core, thus increasing the core loss of the rotor and stray load loss, reducing the efficiency of the motor and increasing the temperature rise of the stator winding

Method used

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  • Treatment technique for acid washing surface of electronic rotor

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Embodiment Construction

[0009] The present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0010] refer to figure 1 , which is a flow chart of the pickling process of the present invention to greatly reduce the stray loss of the motor.

[0011] As shown in the figure, the surface pickling treatment process of the motor rotor, the process steps are:

[0012] First select the rotors whose efficiency test fails to meet the standard as the rotors for pickling. Then process them step by step:

[0013] The first step: remove the outer circle of the rotor by about 0.10mm;

[0014] The second step: mix hydrochloric acid and water into a 1:1 solution;

[0015] Step 3: Treat the outer surface of the rotor with hydrochloric acid solution and paint all over;

[0016] Step 4: Put the motor rotor that has been completely painted on the surface into an oven to dry for an unlimited time.

[0017] The minimum time limit for drying the treated moto...

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Abstract

This invention relates to a motor rotor surface pickling technique which is applied in reducing the iron loss and stray load loss in cage induction motor rotors. It is unique that rotors not eligible in frequency testings are screened out for pickling at first and then processed as follows. Firstly, the rotor is lathed by 0.10mm in outer circle. Secondly, hydrochloric acid and water are mixed into solution at a ratio of 1:1. Thirdly, the whole outer circle surface of the rotor is treated with hydrochloric acid solution. Fourthly, the entirely treated rotor is placed into an oven for drying without definite time limitation. This invention beneficially reduces the stray load loss to 1/5 of the original value at most and promotes the motor efficiency, typically by 0.5~1.5% for middle or small low-voltage motors.

Description

technical field [0001] The invention relates to a pickling treatment process, more specifically to a pickling treatment process for the surface of a motor rotor, and belongs to the technical field of motor manufacturing process. Background technique [0002] The cage-shaped asynchronous motor is a common asynchronous motor with a wide range of applications and low prices. Its structure includes a stator and a rotor. The rotor is generally made of die-cast aluminum to reduce costs and meet the needs of mass production. [0003] However, die-cast aluminum tends to reduce the contact resistance between the rotor cage and the iron core, thus increasing the core loss of the rotor and stray load loss, reducing the efficiency of the motor and increasing the temperature rise of the stator winding. [0004] At present, some motor manufacturers, in order to improve motor efficiency, reduce core loss and load stray loss, ensure that high-efficiency motors exported to the United States ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/12
Inventor 王少景
Owner SHANGHAI ELECTRICAL APPLIANCES RES INSTGROUP
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