A friction control agent for train wheel tread and its preparation process

Abstract

The invention discloses a friction control agent for a train wheel step board and a preparation process thereof. The friction control agent contains the following components in percentage by mass: 25-50% of an adhesive agent, 30-50% of a lubricant, 5-15% of a friction increase agent, 10-30% of a friction modifying agent, 1-3% of a curing agent, 0-1.5% of an accelerator, and 1-3% of a mold release agent. The thermosetting organic resin and the thermosetting inorganic phosphate adhesive agent are utilized to form a network structure during heat molding, and the inorganic adhesive agent does not decompose at a high temperature; and the friction increase agent and the lubricant are utilized to effectively control the friction coefficient. The obtained friction control agent has the characteristics of high heat resistance, high hardness, high mechanical strength and good wear resistance, has good film-forming performance, has positive frictional characteristic, and can control the moderate friction coefficient, reduce running noise, effectively reduce steel rail and cartwheel abrasion, and ensure running safety.

Description

technical field [0001] The invention belongs to the field of wheel-rail lubrication, and in particular relates to a friction control agent for train wheel treads and a preparation process thereof. Background technique [0002] In the field of modern rail transportation, wheel-rail friction and lubrication are related to locomotive traction energy consumption, driving safety, wheel-rail material consumption and maintenance costs, so they are valued by the railway departments of various countries. With the further increase of the running speed of the train, the heavy load of the rolling stock continues to increase, and the force of the wheel-rail interaction continues to increase. At the same time, problems such as rail damage (cracks and peeling), "noise" curves, and rail wear are becoming more and more serious. protrude. Especially for rails on small-radius curves, due to the guiding effect of the curved rails on the train axle, the wheels and rails have mutual adhesion, cr...

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Problems solved by technology

[0003] After the 20th century, the lubrication technology of the wheel flange and the side of the rail has been greatly developed. However, in order to ensure the adhesion of the wheel and rail, the lubrication is limited to the wheel flange and the side of the rail, and is generally used in the curved section. The traditional concept believes that the rolling surface is a forbidden area for lubrication.

[0004] However, for the control of the friction coefficient of the train wheel tread, some road bureaus have begun to use it, but there is no mature product in China to promote it in all road bureaus, especially on lines with large curve radii and steep slopes, the anti-friction effect is not ideal and the cost is high; There are problems such as insufficient adhesion between the solid lubricating adhesive film and the surface of the wheel and rail, and the material is brittle and easily broken when heated.

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