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Starting motor carbon brush for vehicle engine and making method of the same

A technology of automobile engine and starter motor, which is applied in the direction of engine motor starting, engine starting, engine components, etc., which can solve the problems of wear and conductivity mutual restriction, achieve the effect of improving strength and solving lubrication problems

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

[0007] Prepare mixed graphite powder first, take 15 kg of phenolic resin and 15 kg of alcohol and mix for 15 minutes, then take 3 kg of epoxy resin and add it to the mixed phenolic resin and mix together for 15 minutes to make a composite resin. Mix the composite resin with 82 kg of graphite powder at a temperature of 90°C to make 100 kg of mixed graphite powder; then take 20 kg of mixed graphite powder and put it into a dry mixer, then take 75 kg of copper powder, 4 kg of molybdenum disulfide and Add 1 kg of cerium oxide into the dry mixer in the form of dry powder. After dry mixing in the dry mixer, it can be sent to the press to press the carbon brush of the starter motor of the automobile engine.

[0008] Product of the present invention reaches technical index as follows

[0009] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0010] μΩm g / c㎡ HR10 / 558 V μ

[0011] 0.05—0.50 3.5—5.0 60—100 0.8—1.3 0.10—0.20.

Embodiment 2

[0013] Prepare mixed graphite powder first, take 20 kg of phenolic resin and 20 kg of alcohol and mix for 15 minutes, then take 2 kg of epoxy resin and add it to the mixed phenolic resin and mix together for 15 minutes to make a composite resin. Mix the composite resin with 78 kg of graphite powder at a temperature of 90°C to make 100 kg of mixed graphite powder; then take 40 kg of mixed graphite powder and put it into a dry mixer, then take 55 kg of copper powder, 3.5 kg of molybdenum disulfide and Add 1.5 kg of cerium oxide into the dry mixer in the form of dry powder. After dry mixing in the dry mixer, it can be sent to the press to press the carbon brush of the starter motor of the automobile engine.

[0014] Product of the present invention reaches technical index as follows

[0015] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0016] μΩm g / c㎡ HR10 / 558 V μ

[0017] 20.05—0.50 3.5—5.0 60—100 0.8—1.3 0.10—0.20.

Embodiment 3

[0019] Prepare mixed graphite powder first, take 15 kg of phenolic resin and 15 kg of alcohol and mix for 15 minutes, then take 3 kg of epoxy resin and add it to the mixed phenolic resin and mix together for 15 minutes to make a composite resin. Mix the composite resin with 82 kg of graphite powder at a temperature of 90°C to make 100 kg of mixed graphite powder; then take 26 kg of mixed graphite powder and put it into a dry mixer, then take 70 kg of copper powder, 3.0 kg of molybdenum disulfide and Add 1.0 kg of cerium oxide into the dry mixer in the form of dry powder. After dry mixing in the dry mixer, it can be sent to the press to press the carbon brush of the starter motor of the automobile engine.

[0020] Product of the present invention reaches technical index as follows

[0021] Resistivity Bulk Density Rockwell Hardness Contact Pressure Drop Coefficient of Friction

[0022] μΩm g / c㎡ HR10 / 558 V μ

[0023] 0.05—0.50 3.5—5.0 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 starting motor carbon brush for a vehicle engine and a making method of the same. The starting motor carbon brush for the vehicle engine is characterized in that the starting motor carbon brush for the vehicle engine comprises the following components: a mixed graphite powder, a copper powder, molybdenum disulfide and cerium oxide, wherein the mixed graphite powder comprises the following components in percentage by weight: graphite powder, epoxy resin and phenolic resin. The making method of the same comprises the following steps that the phenolic resin and alcohol which have a same amount are firstly mixed for 15 minutes; the epoxy resin is added into the mixing phenolic resin and mixed with the phenolic resin together for 15 minutes so as to make composite resin; the mixed composite resin is mixed with the graphite powder at the temperature of 90 DEG C so as to make the mixed graphite powder; the copper powder, the molybdenum disulfide and the cerium oxide are added into the mixed graphite powder in a mode of dry powder; and the copper powder, the molybdenum disulfide, the cerium oxide and the mixed graphite powder are pressed to make the starting motor carbon brush for the vehicle engine after being mixed in a dry type mixer. The starting motor carbon brush for the vehicle engine has the advantages that with the selection of epoxy phenolic composite resion as an adhesive, the strength of the carbon brush is strengthened; with the molybdenum disulfide as a lubricant, the problem of lubrication at the starting instant is solved; and with the cerium oxide as a grinding agent, the electrical property of a motor keeps a stable level.

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] The automobile industry has become a pillar industry of our country. The technical level of the entire automobile industry is constantly improving, and all other components are moving towards the direction of the same life as the automobile. As the main wearing part of the engine starter motor, the life of the carbon brush basically determines the life of the starter motor, and has also become an important factor affecting the overall life of the engine. 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 problem of wear, the carbon brush is more importantly a conductor, and any changes to it will affect the current, thereby affecting the starting torque and speed. The two aspects often restrict ...

Claims

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Application Information

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IPC IPC(8): H01R39/20H01R43/12F02N11/00
Inventor 席平波
Owner 温州东南碳制品有限公司
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