Brush material for manufacturing electric tool motor

A technology of electric tools and brushes, which is applied in the direction of motor generator connectors, circuits, collectors, etc., can solve the problems of inability to meet the requirements of brushes used in electric tool motors, poor anti-electromagnetic interference performance, and large impact sparks. Achieve the effects of moderate resistivity, good product stability and low spark level

Inactive Publication Date: 2018-03-09
SUZHOU DONSUN CARBONWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, at present, the general domestic brushes have poor stability, short life, large impact sparks, and poor anti-electromagnetic interference performance. Domestic carbon brush factories cannot meet the use requirements of electric tool motor brushes.

Method used

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  • Brush material for manufacturing electric tool motor
  • Brush material for manufacturing electric tool motor
  • Brush material for manufacturing electric tool motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] 1. Prepare materials according to the following proportions by weight (parts):

[0088]

[0089]

[0090] Wherein, the additive is one or a combination of molybdenum disulfide, tungsten disulfide and ferric oxide.

[0091] 2. Put natural graphite, artificial graphite, fluorinated graphite, silicon carbide, polytetrafluoroethylene, carbon fiber powder and additives in the kneading pot, turn on the rotating device of the kneading pot, and then add the graphene aqueous solution into the kneading pot by spraying. Make it evenly attached, turn on the heating for about 1.5h, raise the temperature to 130-140°C, stop kneading, add binder pitch, continue heating for hot kneading, and make the temperature uniformly rise to about 220°C for about 3 hours, then stop heating 2. Continue kneading and granulation. After about 1-2 hours, the matrix powder is obtained. After taking out the material, place it at room temperature, spread it evenly, with a thickness of ≤5cm, and let i...

Embodiment 2

[0101] 1. Prepare materials according to the following proportions by weight (parts):

[0102]

[0103]Wherein, the additive is one or a combination of molybdenum disulfide, tungsten disulfide and ferric oxide.

[0104] 2. Put natural graphite, artificial graphite, fluorinated graphite, silicon carbide, polytetrafluoroethylene, carbon fiber powder and additives in the kneading pot, turn on the rotating device of the kneading pot, and then add the graphene aqueous solution into the kneading pot by spraying. Make it evenly attached, turn on the heating for about 1.5h, raise the temperature to 130-140°C, stop kneading, add binder pitch, continue heating for hot kneading, and make the temperature uniformly rise to about 220°C for about 3 hours, then stop heating 2. Continue kneading and granulation. After about 1-2 hours, the matrix powder is obtained. After taking out the material, place it at room temperature, spread it evenly, with a thickness of ≤5cm, and let it stand for 5...

Embodiment 3

[0114] 1. Prepare materials (parts) according to the following proportions by weight:

[0115]

[0116] Wherein, the additive is one or a combination of molybdenum disulfide, tungsten disulfide and ferric oxide.

[0117] 2. Put natural graphite, artificial graphite, fluorinated graphite, silicon carbide, polytetrafluoroethylene, carbon fiber powder and additives in the kneading pot, turn on the rotating device of the kneading pot, and then add the graphene aqueous solution into the kneading pot by spraying. Make it evenly attached, turn on the heating for about 1.5h, raise the temperature to 130-140°C, stop kneading, add binder pitch, continue heating for hot kneading, and make the temperature uniformly rise to about 220°C for about 3 hours, then stop heating 2. Continue kneading and granulation. After about 1-2 hours, the matrix powder is obtained. After taking out the material, place it at room temperature, spread it evenly, with a thickness of ≤5cm, and let it stand for ...

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Abstract

The invention discloses a brush material for manufacturing an electric tool motor, relating to the field of materials. The brush comprises base powder and asphalt; in particular, the base powder comprises an aqueous solution of graphene; and the base powder further comprises graphite, silicon carbide and carbon fiber powder. The brush for the electric tool has moderate resistivity, low brush running spark grade, good commutation performance, good product stability, excellent abrasion resistance and electromagnetic interference resistance, and is especially suitable for medium and low power angle grinder motors.

Description

technical field [0001] The invention relates to a brush material for preparing electric tool motors and belongs to the field of material science. Background technique [0002] The brush is a conductive part used in the motor to contact the commutator or slip ring to form an electrical connection, and is an important component of the motor. As a sliding contact body that imports and exports current, it has good electrical, thermal and lubricating properties, and has a certain mechanical strength and the instinct to suppress commutation sparks. It is widely used in various AC and DC generators, synchronous motors, battery DC motors, crane motor collector rings, various types of welding machines, etc. Almost all DC motors and commutation motors use brushes. [0003] With the development of science and technology, the types of motors and the working conditions of use are becoming more and more diverse, so various types of brushes are required to meet the various requirements of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/22H01R43/12
CPCH01R39/22H01R43/12H01R2201/10
Inventor 郑海东殷玲吴志涛
Owner SUZHOU DONSUN CARBONWARE CO LTD
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