Preparation method of anti-attrition and wear-resistant material for track

Abstract

The invention discloses a preparation method of an anti-attrition and wear-resistant material for a track. The invention has the beneficial effects that a protective film is automatically formed in motion friction through material technology innovation, direct wear between friction pairs is changed into friction wear between films formed by a coating material, and the purposes of reducing wear, resisting wear and reducing the maintenance amount are achieved on the premise of not changing the friction coefficient (adhesion coefficient), so that the purposes of reducing cost and increasing efficiency are achieved, and the service life of the brake pad is prolonged. In addition, corrugation can be reduced, noise can be reduced, the riding comfort of passengers can be relatively improved, and therefore the purpose of providing social benefits is achieved; meanwhile, the side-grinding anti-wear agent and the rail top improving agent are integrated, so that on one hand, a user does not need to worry that the side-grinding anti-wear agent is accidentally sprayed to a tread to cause a driving accident; 2, the production types of the anti-wear agent are reduced, and the production, use and management costs of the product are reduced; 3, the number of coating equipment can be reduced, the purchase cost is reduced, and 4, the variety of the coating equipment is reduced, and the management cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of traffic track wear reduction and anti-wear, and in particular to a method for preparing a track wear reduction and anti-wear material. Background Art

[0002] Rail wear in urban rail transit is mainly divided into two types: side wear and corrugation, and the spraying equipment used to improve wear is also two different types of equipment. The anti-wear materials used for side wear are currently mainly oil-based, composed of grease with various additives added; the anti-wear products used to improve rail top corrugation are mainly water-based. This type of friction control agent is mainly improved by drawing on coating production technology, and because of its complex composition and high production cost, it is not conducive to achieving the goal of cost reduction and efficiency improvement.

[0003] At present, due to the use of two types of friction control materials, two different coating equipment are also required to complete the improvement work of side grinding and corrugation respectively; on the one hand, the maintenance cost and management difficulty are increased due to the differences in materials and equipment; on the other hand, because the grease used for side grinding cannot be sprayed on the rail surface, it is necessary to reduce the amount of coating for side grinding to prevent it from being coated on the rail surface, which accordingly affects the coating effect, while also increasing the difficulty of coating, and the track safety may be threatened. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing a track wear-reducing and anti-wear material in order to solve the above-mentioned problems, so as to realize the combination of anti-wear improvers for side wear and corrugation wear. At the same time, by adding metal self-repairing raw materials for friction film formation into the formula, the direct friction wear between the two friction pairs of wheel and rail is changed to friction wear between the films formed by the coating material, thereby reducing wear and noise without changing the friction coefficient (adhesion coefficient).

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A method for preparing a rail wear-reducing and anti-wear material comprises the following steps:

[0007] Step 1: Weigh the graphite, talcum powder, and vermiculite powder required for production, weigh 0.2% of the KH-550 coupling agent by weight, put them into a ball mill, add solvent and ball mill for 2 hours;

[0008] Step 2: Add a batch of sodium hydroxymethyl cellulose to a hot water bath at 80 degrees Celsius and stir for 1 hour to completely dissolve it;

[0009] Step 3: After the water temperature drops to normal, add propylene glycol and glycerol, continue stirring for 1 hour, and then send it into a high shear homogenizer;

[0010] Step 4: Add the solid material after ball milling in step 1 to the homogenizer in step 3, continue to refine and homogenize for a certain period of time, and then add the metal wear self-repairing material to continue homogenization;

[0011] Step 5: Add ionized water and other additives to the homogenized material in step 4, and homogenize for 20 minutes to obtain a friction control agent product in a stable state.

[0012] Furthermore, the homogenization time after adding the ball-milled solid material in step 1 in step 4 is 1 hour, and the homogenization time after adding the metal wear self-repairing material in step 4 is 2 hours.

[0013] Furthermore, the remaining additives in step 5 include surfactants, thickeners, defoamers, suspending agents, and additives.

[0014] Furthermore, the friction controller product obtained in step 5 contains the following raw materials in percentage: glycerol: 6.2-6.7%; sodium hydroxymethyl cellulose: 1.5-1.7%; surfactant: 0.2-0.3; additive: 0.05-0.1%, graphite: 3-5%; suspending agent: 0.3-0.5%, defoaming agent: 1-1.5%; thickener: 1.5-2%, metal self-repairing material: 0.03-0.05%, talc: 1.5-1.7%; other solids: 1.5-2%, and the rest is solvent (ionized water).

[0015] Furthermore, the ratio of the product prepared in step 5 is 6.2-6.5% glycerol; 1.5-1.6% sodium hydroxymethyl cellulose; 0.22-0.26% surfactant; 0.05-0.08% additive, 3-4% graphite; 0.3-0.45% suspending agent, 1-1.4% defoaming agent; 1.6-2% thickener, 0.03-0.04% metal self-repairing material, 1.5-1.6% talc; other solids: 1.6-2%, and the rest is solvent (ionized water).

[0016] Furthermore, the ratio of the product prepared in step 5 is 6.3-6.5% glycerol; 1.52-1.6% sodium hydroxymethyl cellulose; 0.22-0.25% surfactant; 0.06-0.08% additive, 3.2-4% graphite; 0.3-0.4% suspending agent, 1-1.2% defoaming agent; 1.6-1.8% thickener, 0.03-0.035% metal self-repairing material, 1.55-1.6% talc; other solids: 1.7-2%, and the rest is solvent (ionized water).

[0017] Furthermore, other aggregates in the rail wear-reducing and anti-wear material include vermiculite powder, silicon dioxide and barite powder.

[0018] Furthermore, the propylene glycol has good wettability and also has the function of a solvent; the vermiculite powder, as a friction performance regulator, can improve the friction coefficient and also has the function of cleaning the wear surface; the talcum powder, as a friction modifier, has a tendency to easily split into scales and has special lubricity; the sodium hydroxymethyl cellulose, as an adhesive, forms a non-Newtonian fluid, and when the shear force is increased, the viscosity is significantly reduced, making the use and coating of the friction control agent more convenient.

[0019] The beneficial effects of the present invention are:

[0020] The present invention uses material technology innovation to automatically form a protective film during dynamic friction, and changes the direct wear between friction pairs into friction wear between films formed by coating materials. Under the premise of not changing the friction coefficient (adhesion coefficient), it reduces wear and resists wear, reduces the amount of maintenance and thus achieves the goal of reducing costs and increasing efficiency. It can also reduce corrugation and noise, and relatively improve the passenger comfort, thereby achieving the goal of providing social benefits. At the same time, by combining the side wear anti-wear agent and the rail top improver into one, there is no need to worry about the side wear agent being accidentally sprayed onto the tread and causing traffic accidents. Secondly, the types of anti-wear agent production are reduced, and the production, use and management costs of products are reduced. Thirdly, the number of coating equipment can be reduced to reduce the purchase cost. Fourthly, the types of coating equipment can be reduced to reduce the management cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a flow chart of a method for preparing a rail friction-reducing and anti-wear material. DETAILED DESCRIPTION

[0022] A method for preparing a rail wear-reducing and anti-wear material comprises the following steps:

[0023] Step 1: Weigh the graphite, talcum powder, and vermiculite powder required for production, weigh 0.2% of the KH-550 coupling agent by weight, put them into a ball mill, add solvent and ball mill for 2 hours;

[0024] Step 2: Add a batch of sodium hydroxymethyl cellulose to a hot water bath at 80 degrees Celsius and stir for 1 hour to completely dissolve it;

[0025] Step 3: After the water temperature drops to normal, add propylene glycol and glycerol, continue stirring for 1 hour, and then send it into a high shear homogenizer;

[0026] Step 4: Add the solid material after ball milling in step 1 to the homogenizer in step 3, continue to refine and homogenize for a certain period of time, and then add the metal wear self-repairing material to continue homogenization;

[0027] Step 5: Add ionized water and other additives to the homogenized material in step 4, and homogenize for 20 minutes to obtain a friction control agent product in a stable state.

[0028] In this embodiment, the homogenization time after adding the ball-milled solid material in step 1 in step 4 is 1 hour, and the homogenization time after adding the metal wear self-repairing material in step 4 is 2 hours.

[0029] In this embodiment, the remaining additives in step 5 include surfactants, thickeners, defoamers, suspending agents, and additives.

[0030] In this embodiment, the friction controller product obtained in step 5 contains the following raw materials in percentage: glycerol: 6.2-6.7%; sodium hydroxymethyl cellulose: 1.5-1.7%; surfactant: 0.2-0.3; additive: 0.05-0.1%, graphite: 3-5%; suspending agent: 0.3-0.5%, defoaming agent: 1-1.5%; thickener: 1.5-2%, metal damage self-repairing material: 0.03-0.05%, talc: 1.5-1.7%; other solids: 1.5-2%, and the rest is solvent (ionized water).

[0031] In this embodiment, the ratio of the product prepared in step 5 is 6.2-6.5% of glycerol; 1.5-1.6% of sodium hydroxymethyl cellulose; 0.22-0.26% of surfactant; 0.05-0.08% of additives; 3-4% of graphite; 0.3-0.45% of suspending agent; 1-1.4% of defoaming agent; 1.6-2% of thickener; 0.03-0.04% of metal self-repairing material; 1.5-1.6% of talc; other solids: 1.6-2%, and the rest is solvent (ionized water).

[0032] In this embodiment, the ratio of the product prepared in step 5 is 6.3-6.5% glycerol; 1.52-1.6% sodium hydroxymethyl cellulose; 0.22-0.25% surfactant; 0.06-0.08% additive, 3.2-4% graphite; 0.3-0.4% suspending agent, 1-1.2% defoaming agent; 1.6-1.8% thickener, 0.03-0.035% metal self-repairing material, 1.55-1.6% talc; other solids: 1.7-2%, and the rest is solvent (ionized water).

[0033] In this embodiment, the other aggregates in the rail wear-reducing and anti-wear material include vermiculite powder, silicon dioxide and barite powder.

[0034] In this embodiment, the propylene glycol has good wettability and also has the function of a solvent; the vermiculite powder, as a friction performance regulator, can not only improve the friction coefficient, but also has the function of cleaning the wear surface; the talcum powder, as a friction modifier, has a tendency to easily split into scales and has special lubricity; the sodium hydroxymethyl cellulose is used as an adhesive, and the solution it forms is a non-Newtonian fluid. When the shear force is increased, the viscosity is significantly reduced, making the use and coating of the friction control agent more convenient.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a rail wear-reducing and anti-wear material, characterized in that: It includes the following steps: Step 1: Weigh the graphite, talcum powder, and vermiculite powder required for production, weigh 0.2% of the KH-550 coupling agent by weight, put them into a ball mill, add solvent and ball mill for 2 hours; Step 2: Add a batch of sodium hydroxymethyl cellulose to a hot water bath at 80 degrees Celsius and stir for 1 hour to completely dissolve it; Step 3: After the water temperature drops to normal, add propylene glycol and glycerol, continue stirring for 1 hour, and then send it into a high shear homogenizer; Step 4: Add the solid material after ball milling in step 1 to the homogenizer in step 3, continue to refine and homogenize for a certain period of time, and then add the metal wear self-repairing material to continue homogenization; Step 5: Add ionized water and other additives to the homogenized material in step 4, and homogenize for 20 minutes to obtain a friction control agent product in a stable state.

2. The method for preparing a rail friction-reducing and anti-wear material according to claim 1, characterized in that: The homogenization time after adding the ball-milled solid material in step 1 in step 4 is 1 hour, and the homogenization time after adding the metal wear self-repairing material in step 4 is 2 hours.

3. The method for preparing a rail friction-reducing and anti-wear material according to claim 1, characterized in that: The remaining additives in step 5 include surfactants, thickeners, defoamers, suspending agents, and additives.

4. The method for preparing a rail friction-reducing and anti-wear material according to claim 1, characterized in that: The friction controller product obtained in step 5 contains the following raw materials in percentage: glycerol: 6.2-6.7%; sodium hydroxymethyl cellulose: 1.5-1.7%; surfactant: 0.2-0.3; Additives: 0.05-0.1%, graphite: 3-5%; Suspending agent: 0.3-0.5%, defoaming agent: 1-1.5%, thickener: 1.5-2%, metal self-repairing material: 0.03-0.05%, talcum powder: 1.5-1.7%, other solids: 1.5-2%, and the rest is solvent (ionized water).

5. The method for preparing a rail friction-reducing and anti-wear material according to claim 4, characterized in that: The ratio of the product prepared in step 5 is 6.2-6.5% of glycerol; 1.5-1.6% of sodium hydroxymethyl cellulose; and 0.22-0.26% of surfactant. Additives: 0.05-0.08%, graphite: 3-4%; Suspending agent: 0.3-0.45%, defoaming agent: 1-1.4%, thickener: 1.6-2%, metal self-repairing material: 0.03-0.04%, talcum powder: 1.5-1.6%, other solids: 1.6-2%, and the rest is solvent (ionized water).

6. The method for preparing a rail friction-reducing and anti-wear material according to claim 4, characterized in that: The ratio of the product prepared in step 5 is 6.3-6.5% of glycerol; 1.52-1.6% of sodium hydroxymethyl cellulose; and 0.22-0.25% of surfactant. Additives: 0.06-0.08%, graphite: 3.2-4%; suspending agent: 0.3-0.4%, defoaming agent: 1-1.2%; thickener: 1.6-1.8%, metal self-repairing material: 0.03-0.035%, talcum powder: 1.55-1.6%; other solids: 1.7-2%, and the rest is solvent (ionized water).

7. The method for preparing a rail friction-reducing and anti-wear material according to claim 4, characterized in that: Other aggregates in the rail friction-reducing and anti-wear material include vermiculite powder, silicon dioxide and barite powder.

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