Rail-side solid-liquid-solid lubricating material and manufacturing method thereof

Abstract

The invention discloses a rail-side solid-liquid-solid lubricating material and a manufacturing method thereof. The solid-liquid-solid lubricating material is prepared from the following raw materialsin percentage by weight: 18-35% of base oil, 1.5-5% of a thickening agent, 35-60% of wax, 10-20% of a solid lubricant, 2-5% of a tackifier, 1-5% of an extreme-pressure antiwear agent and 5-8% of other additives. According to the rail-side solid-liquid-solid lubricating material and the manufacturing method thereof, the solid-liquid-solid lubricating material has a low friction coefficient and relatively strong adhesion to a steel rail, can solve the problem that a lubricating material cannot adhere under the working condition of having water, has a low oil separating rate and certain degradation capacity, can effectively relieve the pollution of the lubricating material to the environment along a railway, and can reduce problems generated by a steel rail oil wedge.

Description

technical field [0001] The invention relates to a rail-side solid-liquid-solid lubricating material and a manufacturing method thereof. Background technique [0002] my country has a vast territory and complex geographical environment. There are more than 5,000 kilometers of curved rails with a radius of less than 300m on the railway line. The service life of the rails is generally only 1 to 2 years. Some curved rails on difficult roads can only be used for 11 months before wearing out. must be replaced. [0003] According to the analysis of the rail change statistics of the public works system, the rail wear rate data of 20% to 30% of the railway sections in my country exceeds the serious wear rate level of foreign countries, and about 60% of the curved section rails are caused by wheel stamping friction. Severe damage from grinding and side grinding. At present, domestic rail side lubrication mainly includes grease, solid-liquid-solid lubricating materials and supporting d...

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Problems solved by technology

[0004] 1) The public works system mainly installs vehicle-mounted lubricators on short-distance passenger cars, and assigns full-time oilers to work with the vehicles every day. The lubricating grease is sprayed on the side of the rail through the oil pipe. The lubricating grease is prone to oil throwing and oil leakage. There will be a large number of micro-cracks in the forward direction, and the oil wedge effect produced by excessive lubricating oil will cause the cracks to expand until they are peeled off. As a result, the top surface of the rail will be covered with pits of various sizes, thus accelerating the damage and scrapped

[0005] 2) The sensitivity of lubricating grease to temperature will appear: when the temperature is high, the consistency of the lubricating grease is small (the extreme pressure resistance performance is low, and the grease will reach the top surface of the rail due to wind, vehicle speed, etc., causing an accident of brake failure), while the temperature is low. When the consistency is high (it will affect the coating effect due to clogged oil pipe or nozzle), the change of consistency will cause inaccurate spraying position;

[0006] At present, the main problems of solid-liquid-solid lubrication products are: poor adhesion on the surface of the rail side, and the lubrication effect is not ideal; there is still an oil wedge problem, causing some rails to peel off; not only waste, but also scattered on the roadside pollute the environment

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