Rail gauge surface lubricant, manufacturing method and use method thereof

Abstract

The present invention discloses a rail gauge surface lubricant, a manufacturing method, and a method for using the lubricant. The lubricant's components, in proportion by weight, are: 3-6 parts lithium grease, 3-8 parts polyethylene wax, 1-2 parts graphite, 0.5-1 parts asphalt glue, and 0.5-1 parts extreme pressure anti-wear agent. The lubricant, its manufacturing method, and its method for using the lubricant exhibit consistent performance at varying temperatures, are safe, and provide excellent wheel and rail lubrication and protection.

Description

Technical Field

[0001] The present invention relates to the field of industrial lubrication, and in particular to a rail gauge surface lubricant used in urban rail transportation such as railways, subways and urban rails, a manufacturing method thereof and a use method thereof. Background Art

[0002] The wheel flanges of urban rail transit vehicles, such as locomotives, subways, and intercity railways, are constantly in contact with and rub against the rails during operation. This wear is particularly severe on tight curves, shortening the service life of both wheels and rails. Urban rail transit is particularly characterized by high-density operation, high starting and braking accelerations, and tight curve radii. This leads to more severe wheel and rail wear and noise.

[0003] Existing rail gauge surface lubricants include grease and solid lubricant sticks, both of which have advantages and disadvantages. For example, grease lubrication has a low friction coefficient, but it will produce oil wedges that cause the rail to peel off pieces, and it is easy to be coated on the top surface of the rail, causing adhesion to decrease, posing a safety hazard; solid lubricant has a higher friction coefficient than grease, but has better extreme pressure resistance, will not produce oil wedges, will not move to the top surface of the rail, and has a wide operating temperature range. Summary of the Invention

[0004] The purpose of the present invention is to provide a rail gauge surface lubricant that combines the advantages of grease and solid lubrication. The manufacturing method and the use method of the lubricant have good wheel and rail lubrication and protection effects at different temperatures.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A rail gauge surface lubricant, comprising the following components in proportion by weight: 3-6 parts lithium grease, 3-8 parts polyethylene wax, 1-2 parts graphite, 0.5-1 parts asphalt glue, and 0.5-1 parts extreme pressure anti-wear agent. The model of the extreme pressure anti-wear agent is T351 or T353.

[0007] Lithium-based grease: Grease reduces friction and achieves lubrication. Polyethylene wax: Reduces friction and forms a solid network, connecting grease with components like graphite. Graphite: Reduces friction and has a layered structure, acting as a solid lubricant. Asphalt colloid: Improves the adhesion of grease, graphite, and metal. Extreme pressure anti-wear agent: Enhances the extreme pressure resistance of the lubricating film.

[0008] The components of the lubricant and their weight proportions are: 5% lithium-based grease, 6% polyethylene wax, 1.5% graphite, 0.75% asphalt glue, and 0.75% extreme pressure anti-wear agent.

[0009] A method for manufacturing a rail gauge surface lubricant comprises the following steps: firstly, uniformly mixing raw materials according to a certain proportion; then, melting the mixed raw materials; then, grinding and dispersing the melted raw materials through a sand mill; and finally, cooling and forming the ground and dispersed mixed liquid to prepare the rail gauge surface lubricant.

[0010] A method for using a rail gauge surface lubricant comprises the following steps: first, adding a solid lubricant to a storage container, then heating the storage container to melt the solid lubricant, and then spraying a liquid lubricant onto the rail gauge surface through a nozzle of a spraying device. As the liquid lubricant solidifies when it is cooled on the rail gauge surface, a lubricating film is formed on the rail gauge surface.

[0011] The melting temperature of the solid lubricant is 120-130°C.

[0012] The invention has the advantages of stable performance, safety, and good wheel and rail lubrication and protection under four-season temperature conditions; it avoids the drawbacks of lubricating material flowing on the side of the rail in summer and the rail oil peeling caused by the formation of oil slugs due to temperature changes in the four seasons; and it prevents normal spraying due to blockage of the oil passage and nozzle in winter; it has good extreme pressure resistance and adhesion performance; and it achieves the following performances: a drop melting point of 73±5°C, a flash point of ≥170°C, an ignition point of ≥200°C, a friction coefficient of ≤0.1, and metal surface adhesion of ≥Level 1. DETAILED DESCRIPTION

[0013] Example 1

[0014] A rail gauge surface lubricant is characterized by its components and their weight proportions being: 5% lithium-based grease, 6% polyethylene wax, 1.5% graphite, 0.75% asphalt glue, and 0.75% extreme pressure anti-wear agent.

[0015] A method for manufacturing a rail gauge surface lubricant comprises the following steps: firstly, uniformly mixing raw materials according to a certain proportion; then, melting the mixed raw materials; then, grinding and dispersing the melted raw materials through a sand mill; and finally, cooling and forming the ground and dispersed mixed liquid to prepare the rail gauge surface lubricant.

[0016] A method for using a rail gauge surface lubricant comprises the following steps: first, adding a solid lubricant to a storage container, then heating the storage container to melt the solid lubricant, and then spraying a liquid lubricant onto the rail gauge surface through a nozzle of a spraying device. As the liquid lubricant solidifies when it is cooled on the rail gauge surface, a lubricating film is formed on the rail gauge surface.

[0017] The melting temperature of the solid lubricant is 120-130°C.

[0018] The rail gauge surface lubricant, its manufacturing method and its use method of this embodiment have good performance and temperature at different temperatures, are safe, and have good wheel and rail lubrication and protection effects.

[0019] Example 2

[0020] A rail gauge surface lubricant is characterized by its components and their weight proportions being: 6 parts lithium-based grease, 8 parts polyethylene wax, 2 parts graphite, 0.5 parts asphalt glue, and 0.5 parts extreme pressure anti-wear agent.

[0021] A method for manufacturing a rail gauge surface lubricant comprises the following steps: firstly, uniformly mixing raw materials according to a certain proportion; then, melting the mixed raw materials; then, grinding and dispersing the melted raw materials through a sand mill; and finally, cooling and forming the ground and dispersed mixed liquid to prepare the rail gauge surface lubricant.

[0022] A method for using a rail gauge surface lubricant comprises the following steps: first, adding a solid lubricant to a storage container, then heating the storage container to melt the solid lubricant, and then spraying a liquid lubricant onto the rail gauge surface through a nozzle of a spraying device. As the liquid lubricant solidifies when it is cooled on the rail gauge surface, a lubricating film is formed on the rail gauge surface.

[0023] The melting temperature of the solid lubricant is 120-130°C.

[0024] The rail gauge surface lubricant, its manufacturing method and its use method of this embodiment have good performance and temperature at different temperatures, are safe, and have good wheel and rail lubrication and protection effects.

[0025] Example 3

[0026] A rail gauge surface lubricant is characterized by its components and their weight proportions being: 3 parts of lithium-based grease, 3 parts of polyethylene wax, 1 part of graphite, 1 part of asphalt glue, and 1 part of extreme pressure anti-wear agent.

[0027] A method for manufacturing a rail gauge surface lubricant comprises the following steps: firstly, uniformly mixing raw materials according to a certain proportion; then, melting the mixed raw materials; then, grinding and dispersing the melted raw materials through a sand mill; and finally, cooling and forming the ground and dispersed mixed liquid to prepare the rail gauge surface lubricant.

[0028] A method for using a rail gauge surface lubricant comprises the following steps: first, adding a solid lubricant to a storage container, then heating the storage container to melt the solid lubricant, and then spraying a liquid lubricant onto the rail gauge surface through a nozzle of a spraying device. As the liquid lubricant solidifies when it is cooled on the rail gauge surface, a lubricating film is formed on the rail gauge surface.

[0029] The melting temperature of the solid lubricant is 120-130°C.

[0030] The rail gauge surface lubricant, its manufacturing method and its use method of this embodiment have good performance and temperature at different temperatures, are safe, and have good wheel and rail lubrication and protection effects.

Claims

1. A solid lubricant for the gauge surface of a rail, characterized in that Its components and their weight proportions are: 5% lithium grease, 6% polyethylene wax, 1.5% graphite, 0.75% asphalt glue, and 0.75% extreme pressure anti-wear agent, where the model of the extreme pressure anti-wear agent is T351 or T353; The manufacturing method of the solid lubricant for the rail gauge surface comprises the following steps: firstly, uniformly mixing raw materials according to a proportion, then melting the mixed raw materials, then grinding and dispersing the melted raw materials through a sand mill, and finally cooling and forming the ground and dispersed mixed liquid to prepare the solid lubricant for the rail gauge surface.

2. The method for using a solid lubricant for a rail gauge surface according to claim 1, characterized in that The method comprises the following steps: firstly, adding a solid lubricant into a storage container, then heating the storage container to melt the solid lubricant, and then spraying a liquid lubricant onto the rail gauge surface through a nozzle of a spraying device. As the liquid lubricant solidifies when cooled on the rail gauge surface, a lubricating film is formed on the rail gauge surface. The melting temperature of the solid lubricant is 120-130°C.