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Carbon brush for starting motor of automotive engine and production method thereof

A technology for automobile engines and starter motors, which is applied to circuits, current collectors, electrical components, etc., and can solve problems such as wear and conductivity mutual constraints

Inactive Publication Date: 2012-05-09
温州东南碳制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of mutual restriction between the wear and conductivity of the carbon brush of the starter motor of the automobile engine in the prior art, and provide a carbon brush of the starter motor of the automobile engine and its production method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Prepare mixed graphite powder first, take 70 kg of graphite powder and add 15 kg of pitch, mix under the condition of heating to 220 degrees, then lower the temperature to 100 degrees, then take 15 kg of phenolic resin and add it to the mixture of pitch graphite in the mixture, Mix again under the condition of 90 degrees, then dry the mixed mixture, and then grind it into mixed graphite powder for use. Take 30 kg of mixed graphite powder and put it into the dry mixer, then take 65 kg of copper powder and 5 kg of niobium diselenide and add it to the dry mixer in the form of dry powder, and dry mix it in the dry mixer. The press is used to press the carbon brush of the starter motor of the automobile engine.

[0007] Product of the present invention reaches technical index as follows

[0008] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0009] μΩm g / c㎡ HR10 / 558 V μ

[0010] 0.5—5.0 2.5—4.0 60—100 0.8—1.3 0.10—0.20.

Embodiment 2

[0012] Prepare mixed graphite powder first, take 70 kg of graphite powder and add 15 kg of pitch, mix under the condition of heating to 220 degrees, then lower the temperature to 100 degrees, then take 15 kg of phenolic resin and add it to the mixture of pitch graphite in the mixture, Mix again under the condition of 90 degrees, then dry the mixed mixture, and then grind it into mixed graphite powder for use. Take 55 kg of mixed graphite powder and put it into the dry mixer, then take 39 kg of copper powder and 6 kg of niobium diselenide and add it to the dry mixer in the form of dry powder, and dry mix it in the dry mixer, then you can The press is used to press the carbon brush of the starter motor of the automobile engine.

[0013] Product of the present invention reaches technical index as follows

[0014] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0015] μΩm g / c㎡ HR10 / 558 V μ

[0016] 0.5—5.0 2.5—4.0 60—100 0.8—1.3 0.10—0...

Embodiment 3

[0018] Prepare mixed graphite powder first, take 75 kg of graphite powder and add 5 kg of pitch, mix under the condition of heating to 220 degrees, then lower the temperature to 100 degrees, then take 20 kg of phenolic resin and add it to the mixture of pitch graphite in the mixture, Mix again under the condition of 90 degrees, then dry the mixed mixture, and then grind it into mixed graphite powder for use. Take 42 kg of mixed graphite powder and put it into the dry mixer, then take 55 kg of copper powder and 3 kg of niobium diselenide and add it to the dry mixer in the form of dry powder, and dry mix it in the dry mixer. The press is used to press the carbon brush of the starter motor of the automobile engine.

[0019] Product of the present invention reaches technical index as follows

[0020] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0021] μΩm g / c㎡ HR10 / 558 V μ

[0022] 0.5—5.0 2.5—4.0 60—100 0.8—1.3 0.10—0.20.

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PUM

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Abstract

The invention relates to a carbon brush for a starting motor of an automotive engine and a production method thereof, and the carbon brush is characterized by comprising the following components: mixed graphite powder, copper powder and niobium diselenide, wherein the mixed graphite powder comprises the following components: graphite powder, asphalt and phenolic resin. The preparation method of the carbon brush for the starting motor of the automotive engine is characterized by comprising the following steps of: firstly preparing the mixed graphite powder, adding the asphalt into the graphite powder to mix at a temperature of 220 DEG C and adding the phenolic resin after the temperature is slowly lowered below 100 DEG C; then mixing at a temperature of 90 DEG C and grinding the dried powder into the mixed graphite powder for standby; adding the copper powder and the niobium diselenide into the mixed graphite powder in a manner of dry powder, mixing in a dry mixer and pressing the carbon brush for the starting motor of the automotive engine. The invention has the advantages that as resin modified asphalt is adopted as an adhesive agent, the carbon brush has the advantages of a resin adhesive agent and an asphalt adhesive agent, so that the strength of the carbon brush is improved, and the carbon brush is not superhard; and as the niobium diselenide is used as a lubricating agent, the lubrication problem of the carbon brush is effectively solved.

Description

technical field [0001] The invention relates to a carbon brush for an automobile engine starter motor and a production method thereof. Background technique [0002] Automobiles are becoming more and more important in people's life in our country, and people have higher and higher requirements for the performance of automobiles, forcing the entire automobile industry to continuously improve the technical level, and all other parts are moving toward the same lifespan as the automobile. direction forward. As the main wearing part of the generator, the carbon brush has a life span that basically must be the life of the generator. In order to achieve the goal of the same service life, the domestic carbon brush industry is making its own efforts in different directions. However, in addition to the lifespan of the carbon brush, the more important thing is that it bears the heavy responsibility of leading out the current. Any modification to it will affect the current size, power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/22H01R39/26H01R43/12
Inventor 席平波
Owner 温州东南碳制品有限公司
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