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Carbon brush of motor of drum washing machine and method for manufacturing carbon brush

A drum washing machine and carbon brush technology, which is applied in the manufacture of brushes, circuits, current collectors, etc., can solve the problems of low work efficiency, shortened service life of carbon brushes, and high wear rate, so as to save production costs, reduce wear and tear, and have a long service life Effect

Inactive Publication Date: 2013-02-06
JIANGSU HUAYU CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Motor carbon brushes are widely used. The existing brushes for various types of motors are made of graphite powder and carbon powder or graphite powder and metal powder, which are fully mixed with binders (such as coal tar pitch, synthetic resin, etc.). , Pressed, roasted or solidified to form brush blanks. After the brush blanks are processed and assembled according to the drawings, the component carbon brushes can be made. However, the existing carbon brushes have a high wear rate in electric tools and are severely shortened. The service life of the carbon brush is shortened, resulting in low work efficiency, therefore, a new technical solution should be provided to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A drum washing machine motor carbon brush, the composition of the motor carbon brush includes the following components by weight percentage: 82% graphite powder, 13% asphalt, and 5% tungsten powder. The preparation method of the carbon brush of the motor of the drum washing machine comprises the following steps: adding graphite powder, pitch and tungsten powder into the mixer according to the above weight percentages for thorough mixing; 250 mesh; sieve the crushed powder, the particle size of the sieve is 100 mesh; enter the qualified powder into a compactor for compacting; put the compacted crude product into a sintering furnace for sintering, the conditions are as follows :

[0021] Process equipment: 5 temperature zone tunnel sintering furnace,

[0022] Process conditions: The furnace temperatures of tunnel sintering furnaces in 5 temperature zones are: 95°C, 145°C, 245°C, 345°C, 245°C,

[0023] Time: 8h;

[0024] After the sintering is completed, the rough produ...

Embodiment 2

[0026] A drum washing machine motor carbon brush, the composition of the motor carbon brush includes the following components by weight percentage: graphite powder 86%, asphalt 9%, tungsten powder 5%. The preparation method of the carbon brush of the motor of the drum washing machine comprises the following steps: adding graphite powder, pitch and tungsten powder into the mixer according to the above weight percentage for thorough mixing; The diameter of the crushed powder is 300 mesh; the crushed powder is sieved, and the particle size of the screen is 100 mesh; the powder that meets the requirements is entered into a compactor for compacting; the compacted crude product is put into a sintering furnace for sintering. as follows:

[0027] Process equipment: 5 temperature zone tunnel sintering furnace,

[0028] Process conditions: 5 temperature zone tunnel sintering furnace furnace temperatures are: 100°C, 150°C, 250°C, 350°C, 250°C,

[0029] Time: 9h;

[0030] After the si...

Embodiment 3

[0032] Drum washing machine motor carbon brush, the motor carbon brush composition includes the following components by weight percentage: graphite powder 89%, asphalt 9%, tungsten powder 2%

[0033] The preparation method of the carbon brush of the drum washing machine motor comprises the following steps: adding graphite powder, pitch and tungsten powder into the mixer according to the weight percentage as claimed in claim 1 and thoroughly mixing; , control the crushing particle size to 350 mesh; sieve the crushed powder, the particle size of the sieve is 100 mesh; enter the qualified powder into the compactor for compacting; put the compacted crude product into the sintering furnace Carry out sintering, the condition is as follows:

[0034] Process equipment: 5 temperature zone tunnel sintering furnace,

[0035] Process conditions: The furnace temperatures of tunnel sintering furnaces in 5 temperature zones are: 105°C, 155°C, 255°C, 355°C, 255°C,

[0036] Time: 10h;

[00...

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Abstract

The invention discloses a carbon brush of a motor of a drum washing machine. The carbon brush of the motor is characterized by comprising, by weight, from 80% to 90% of graphite powder, from 7% to 15% of asphalt and from 2% to 5% of tungsten powder. A method for manufacturing the carbon brush of the motor of the drum washing machine includes steps of adding the graphite powder, the asphalt and the tungsten powder into a mixer according to the respective weight percentages, and sufficiently mixing the graphite powder, the asphalt and the tungsten powder; feeding a mixture into a grinder after the graphite powder, the asphalt and the tungsten powder are sufficiently mixed to obtain the mixture, grinding the mixture, and sieving powder obtained after the mixture is ground; performing compression moulding for the powder; sintering; cutting and grinding surfaces after sintering is completed; coating solid glue on two surfaces of a crude product of the carbon brush of the motor after the surface grinding is completed to obtain the crude product; and then punching, embedding wires and grinding arcs to obtain a finished product. The grain size of screen cloth is 100 meshes. The carbon brush and the method have the advantages that a process is simple, conditions are easy to realize, the carbon brush obtained by the method is low in breakage rate and long in service life, loss can be effectively reduced, and the production cost can be effectively saved.

Description

technical field [0001] The invention relates to a carbon brush for a drum washing machine motor. [0002] The invention also relates to a preparation method for the carbon brush of the drum washing machine motor. Background technique [0003] Motor carbon brushes are widely used. The existing brushes for various types of motors are made of graphite powder and carbon powder or graphite powder and metal powder, which are fully mixed with binders (such as coal tar pitch, synthetic resin, etc.). , Pressed, roasted or solidified to form brush blanks. After the brush blanks are processed and assembled according to the drawings, the component carbon brushes can be made. However, the existing carbon brushes have a high wear rate in electric tools and are severely shortened. The service life of the carbon brush is shortened, resulting in low work efficiency. Therefore, a new technical solution should be provided to solve the above problems. Contents of the invention [0004] The ...

Claims

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Application Information

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IPC IPC(8): H01R39/20H01R43/12
Inventor 周兵
Owner JIANGSU HUAYU CARBON
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