Conductive rolling bearing with nickel graphite conductive coating and preparation method

A conductive coating and rolling bearing technology, which is applied in rolling contact bearings, rotating bearings, bearings, etc., can solve the problem of unavoidable eddy currents in bearing parts, high brittleness of resin-coated insulating coatings, and unavoidable eddy currents in bearing parts etc. to achieve the effects of reducing the probability of breakdown, low cost, and excellent self-lubricating properties

Pending Publication Date: 2021-10-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hybrid ceramic insulated bearing that insulates the bearing has complex processing technology, high production cost, and difficult to ensure the dimensional accuracy of the bearing.
Resin-coated insulating coating is brittle and has low thermal conductivity
Insulated bearings sprayed with ceramics have a good insul

Method used

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  • Conductive rolling bearing with nickel graphite conductive coating and preparation method
  • Conductive rolling bearing with nickel graphite conductive coating and preparation method
  • Conductive rolling bearing with nickel graphite conductive coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1:

[0041] This embodiment provides a conductive rolling bearing that is reliable in conductive properties and can effectively derive the bearing current to prevent electrocolate, such as figure 2 As shown, the rolling bearing includes a bearing inner ring 1, a bearing outer ring 2, a rolling body 3, and a retainer 4, and the rolling body 3 is mounted between the bearing inner ring 1 and the bearing outer ring 2, bearing inner ring 1 and bearing The raceway surface of the outer ring 2 is coated with a layer of nickel graphite conductive coating 5. The nickel graphite conductive coating is uniformly covers the outer surface of the bearing inner ring 1 and the outer tip 2 of the bearing outer ring 2 or the outer surface of the rolling body 3.

[0042] The larger the thickness of the nickel graphite conductive coating 5, the higher the porosity of the coating surface, and the conductive properties of the coating will decrease, the larger the thickness of the coating, ...

Example Embodiment

[0046] Example 2:

[0047] This embodiment provides a conductive rolling bearing that is reliable in conductive properties and can effectively derive the bearing current to prevent electrocolate, such as image 3 As shown, the rolling bearing includes a bearing inner ring 1, a bearing outer ring 2, a rolling body 3, and a retainer 4, and the rolling body 3 is mounted between the bearing inner ring 1 and the outer surface of the bearing inner ring 1 and the outer surface of the rolling body 3. Covered with a layer of nickel graphite conductive coating 5. The nickel graphite conductive coating is uniformly covers the outer surface of the bearing inner ring 1 and the outer tip 2 of the bearing outer ring 2 or the outer surface of the rolling body 3.

[0048] The larger the thickness of the nickel graphite conductive coating 5, the higher the porosity of the coating surface, and the electrically conductive properties of the coating will decrease, the larger the thickness of the coating, ...

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Abstract

The invention discloses a conductive rolling bearing with a nickel graphite conductive coating and a preparation method. The rolling bearing comprises a bearing inner ring, a bearing outer ring, a rolling body and a retainer, the rolling body is installed between the bearing inner ring and the bearing outer ring through the retainer, and the surfaces of raceways of the bearing inner ring and the bearing outer ring are each coated with the nickel graphite conductive coating or the outer surface of the rolling body is coated with the nickel graphite conductive coating. Compared with a traditional bearing, the conductive rolling bearing has the advantages of being good in conductivity, high in bearing capacity, resistant to high-temperature molten salt corrosion, good in lubricating performance and the like.

Description

technical field [0001] The invention belongs to a rolling bearing in the technical field of rolling bearings, and in particular relates to a conductive rolling bearing with a nickel-graphite conductive coating and a preparation method thereof. Background technique [0002] Urban subway traction motors, construction machinery high-power motors, electrified railway traction motors and other motors have large traction power, little environmental pollution, and are suitable for sustainable development. This is the development direction of traction motors. Electrified railways use electric locomotives as traction power, and bearings, as important core components of major equipment and main engines, are key components to ensure the normal operation of traction motors. Due to the interaction between the magnetic field of the motor and the rolling bearing, eddy currents inevitably exist in the bearing. In recent years, more and more electric corrosion failures have been detected in...

Claims

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Application Information

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IPC IPC(8): F16C19/52F16C33/32F16C33/62F16C33/64F16C33/58H01B1/02H01B1/04
CPCF16C19/52F16C33/32F16C33/62F16C33/64F16C33/58H01B1/02H01B1/04
Inventor 汪久根洪兆溪冯毅雄贾正阳
Owner ZHEJIANG UNIV
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