Wheel-rail solid lubrication block and preparation method thereof

A technology of solid lubrication and lubricating blocks, which is applied in the direction of track lubrication, track wetting/lubrication, and lubricating compositions, which can solve problems such as easy oxidation and environmental pollution, reduce friction, improve traction efficiency, and achieve better wear reduction effects good effect

Inactive Publication Date: 2015-09-23
吕卫东 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the friction coefficient of molybdenum disulfide is low, it is easy to oxidiz...

Method used

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  • Wheel-rail solid lubrication block and preparation method thereof
  • Wheel-rail solid lubrication block and preparation method thereof

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specific Embodiment approach 1

[0017] Specific implementation mode one: as Figure 1~2 As shown, the structure of the wheel-rail solid lubricating block provided by this embodiment is: a boss is provided on the top, a groove is provided at the bottom, and the structure of the boss and the groove is compatible; the material is: according to the mass ratio, polytetrafluoroethylene (PTFE): 35, high-purity graphite: 57, paraffin: 8; the main production process is as follows: first extrude polytetrafluoroethylene powder and high-purity graphite powder, and heat through step heating: room temperature ~ 120 ° C, 40 ℃ / hour, heat preservation for 1 hour; 120~240℃, 40℃ / hour, heat preservation for 1 hour; 240~330℃, 40℃ / hour, heat preservation for 1 hour; 330~375℃, 40℃ / hour, heat preservation for 1 hour; Cool down to room temperature, infiltrate paraffin, and complete the production of wheel-rail solid lubricating blocks.

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment differs from Embodiment 1 in that polytetrafluoroethylene (PTFE): 49, high-purity graphite: 45, and paraffin: 6.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment is different from Embodiment 1 in that polytetrafluoroethylene (PTFE): 62, high-purity graphite: 35, and paraffin: 3.

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Abstract

The invention discloses a wheel-rail solid lubrication block and a preparation method thereof. The lubrication block is prepared from the following materials in parts by weight: 30-70 parts of polytetrafluoroethylene powder, 30-70 parts of graphite powder and 2-10 parts of paraffin. The preparation method comprises the following steps: conducting extrusion formation on polytetrafluoroethylene powder and graphite powder; heating by the stepped heating method; then cooling to the room temperature by the stepped cooling-down method; enabling paraffin to permeate to obtain the wheel-rail solid lubrication block. The polytetrafluoroethylene material is low in friction coefficient and better in anti-friction effect, thereby prolonging the life cycles of both wheels and rails; as no molybdenum disulfide, lead or other rare and heavy metal is added, environmental protection is more facilitated; friction between the wheels and the rails is effectively reduced, so that the engine traction efficiency is improved, and energy conservation and emission reduction are further realized.

Description

technical field [0001] The invention relates to a rail transit locomotive vehicle component and a preparation method thereof, in particular to a locomotive vehicle wheel and rail lubricating device and a preparation method thereof. Background technique [0002] At present, the wheel and rail lubrication devices of rail transit rolling stock adopt liquid lubrication and solid lubrication. Liquid lubrication is generally powered by compressed air, and the lubricant is regularly and quantitatively coated on the wheel rim by electronic control to form a lubricating belt between the wheel and rail. This lubrication method is greatly affected by the environment. Different lubricants need to be used in winter and summer in cold regions. At the same time, due to the swing of the wheels of the rolling stock during operation, the lubricant coating is inaccurate. In addition, the high-speed rotation of the wheels makes part of the lubricant under the centrifugal force. Under the a...

Claims

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Application Information

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IPC IPC(8): C10M169/04B61K3/00C10N50/08C10N30/06
Inventor 吕卫东谢忠滨初振平
Owner 吕卫东
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