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Formula of wheel-rack solid lubrication additive for railway traffic

A technology for rail transit and additives, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve problems such as burning of lubricating grease, difficulty in functioning, and difficulty in meeting lubricating needs

Inactive Publication Date: 2008-01-30
张念
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in summer, the instantaneous temperature of the wheel-rail friction point in some sections reaches 400-800°C, and the traditional lubricating grease is burned or evaporated instantly, making it difficult to play its due role
At the end of the last century, foreign countries have begun to apply wheel rim solid lubrication technology, and the research work of relevant domestic units has also entered the application stage, but most of them are based on organic compounds, and it is also difficult to meet the lubrication requirements under high temperature conditions in summer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Copper powder 10%, nickel powder 5%, hexagonal boron nitride 6%, tungsten sulfide 11%, calcium fluoride 10%, lauryl hydroxystearic acid 25%, paraffin wax 30%, ethylene propylene copolymer 3%. The above mixture is heated and melted, and ground by a colloid mill for 10 times at a temperature above 80°C. Then

[0016] Pouring molding.

[0017] The above samples were tested on a curve with a radius of 300 meters between Shijiazhuang and Taiyuan. Coat once a day with a coating rate of 200 g / km. After 5 days, the surface of the rail changed from rough to smooth.

Embodiment 2

[0019] Copper powder 10%, graphite 11%, tungsten sulfide 15%, calcium fluoride 5%, lauryl hydroxystearic acid 21%, paraffin wax 35%, ethylene propylene copolymer 3%. The above mixture is heated and melted, and ground by a colloid mill for 10 times at a temperature above 80°C. Then cast into shape. The above samples were tested on a group of turnouts on the Datong-Qinhuangdao coal transportation line. Before the test, the point rail of the switch was replaced every three months, and the surface of the point rail was scale-like. During the test period, it was coated once a day, and the coating amount was 30 grams per point rail. After 7 days, the state of the rail surface improved, and after 14 days, the surface of the rail became smooth.

[0020] In summary, the new wheel-rail lubricant formula involved in the present invention selects metal powder and high-temperature solid lubricating materials for synergistic effect, has strong bearing capacity, high temperature resistanc...

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PUM

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Abstract

The invention discloses a prescription of a wheeltrack lubricant additive, which is characterized by strong bearing capacity, high temperature resistance and long effective time upon one time coating, thereby solving the defect that factigue crack expansion of the wheeltrack is accelerated by traditional grease for the generation of oil wedge effect. The prescription comprises 1 percent-30 percent of metal powder, 3 percent-50 percent of high temperature solid lubricant material and 5 percent-50 percent of fatty acid by weight. The strip solid materials can be produced in virtue of other accessories by the prescription.

Description

Technical field: [0001] In the field of modern rail transportation, solving the friction problem between wheels and rails and implementing effective lubrication are related to a series of important contents such as locomotive traction energy consumption, driving safety, wheel and rail material consumption and maintenance costs, so it has always been subject to the railway departments of various countries. attention. With the further increase of railway operating speed, the problem of wheel-rail lubrication becomes more and more prominent. If wheel-rail lubrication is an important factor related to operating costs and maintenance costs for existing lines, then for high-speed railways, wheel-rail lubrication is already an important issue related to driving safety and high-speed operation; The problems that must be solved in operation have been paid attention to by designers of high-speed railways in various countries. Background technique: [0002] The wheel-rail lubrication...

Claims

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Application Information

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IPC IPC(8): C10M129/44C10M125/04C10M125/22C10M125/26
Inventor 张念
Owner 张念
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