CN114369333A - Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe - Google Patents

Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe Download PDF

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Publication number
CN114369333A
CN114369333A CN202210007434.9A CN202210007434A CN114369333A CN 114369333 A CN114369333 A CN 114369333A CN 202210007434 A CN202210007434 A CN 202210007434A CN 114369333 A CN114369333 A CN 114369333A
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parts
powder
brake shoe
carbon
fiber
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司云川
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Zhenheng Tianjin Technology Development Co ltd
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Zhenheng Tianjin Technology Development Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Composition of linings ; Methods of manufacturing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0008—Ferro
    • F16D2200/0021—Steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0026—Non-ferro
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0039—Ceramics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0052—Carbon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/006—Materials; Production methods therefor containing fibres or particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0082—Production methods therefor
    • F16D2200/0086—Moulding materials together by application of heat and pressure

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a friction material for a brake shoe of a high-speed rail and a method for preparing the brake shoe, wherein the friction material comprises the following raw materials in parts by weight: 15-20 parts of steel fiber, 7-10 parts of red copper fiber, 5-10 parts of basalt fiber, 8-12 parts of ceramic fiber, 5-10 parts of glass fiber, 8-12 parts of modified phenolic resin, 10-15 parts of graphite, 3-5 parts of butadiene-acrylonitrile rubber powder, 5-8 parts of carbon/carbon powder, 1-2 parts of magnesium oxide powder, 2-6 parts of molybdenum disulfide powder, 2-5 parts of aluminum oxide powder and 12-18 parts of barium sulfate powder. The friction material for the brake shoe of the high-speed rail and the brake shoe prepared by the method have the characteristics of good heat resistance, low stable friction coefficient and good shock resistance effect, can prevent the transfer, bonding, damage and scratch of a base material of the brake shoe during braking, and the defects of brake shoe block falling/crack, metal inlay and the like during braking, reduce the generation of fatigue crack and prolong the service life of the wheel tread.

Description

Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe
Technical Field
The invention relates to the technical field of high-speed rail brake devices, in particular to a friction material for a brake shoe of a high-speed rail brake and a method for preparing the brake shoe.
Background
Along with the continuous development of Chinese economy, the speed of railways in China is also continuously increased, and the railways enter the era of high-speed railways, wherein a brake device of a high-speed rail motor train unit is a core technology and key parts for ensuring the safe operation of the high-speed railways, the travel time between different cities is greatly shortened, great convenience is brought to the life of people, but a train brake system bears more and more heavy load, more rigorous requirements on the brake technology of trains are provided, the brake device comprises a brake, a brake shoe, a brake disc and the like, and the brake shoe in the brake device needs to be replaced regularly.
However, the existing brake shoe often generates the problem of brake shoe corrosion in a humid environment, adhesion and damage pairings can occur after corrosion, the defects of brake shoe block falling/crack and the like caused by strength reduction and wear aggravation after friction plate corrosion can occur, and metal inserts can also occur in the existing brake shoe in the braking process to cause damage to the wheel tread.
Therefore, the friction material for the brake shoe of the high-speed rail and the method for preparing the brake shoe are designed to solve the problems.
Disclosure of Invention
The invention provides a friction material for a brake shoe of a high-speed rail brake and a method for preparing the brake shoe, aiming at overcoming the defects;
a friction material for a brake shoe of a high-speed rail comprises the following raw materials in parts by weight:
15-20 parts of steel fiber, 7-10 parts of red copper fiber, 5-10 parts of basalt fiber, 8-12 parts of ceramic fiber, 5-10 parts of glass fiber, 8-12 parts of modified phenolic resin, 10-15 parts of graphite, 3-5 parts of butadiene-acrylonitrile rubber powder, 5-8 parts of carbon/carbon powder, 1-2 parts of magnesium oxide powder, 2-6 parts of molybdenum disulfide powder, 2-5 parts of aluminum oxide powder and 12-18 parts of barium sulfate powder.
Preferably, the carbon/carbon powder is obtained by turning a carbon disc subjected to high-temperature heat treatment at 2000-2500 ℃ into particles with the particle size of less than 60 meshes.
Preferably, the density of the carbon disk is 1.60 to 1.70g/cm 3. In the obtained carbon/carbon powder, the content of the carbon fiber is 50-60%.
Preferably, the length-diameter ratio of the steel fiber is (30-90): 1;
the length-diameter ratio of the red copper fibers is (40-80): 1;
the length-diameter ratio of the basalt fibers is (200-350): 1.
preferably, the diameters of the steel fibers, the red copper fibers and the basalt fibers are 0.04-0.05 mm.
A method for preparing a brake shoe for a high-speed rail comprises the following steps:
step 1: putting steel fibers, red copper fibers, basalt fibers, ceramic fibers, glass fibers and carbon/carbon powder which are weighed according to parts by weight into a high-speed mixer for premixing to obtain a premix;
step 2: putting the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder which are weighed according to the parts by weight into a high-speed mixer, and uniformly mixing the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder with the premix obtained in the step 1 to obtain a mixture;
and step 3: putting the mixture obtained in the step (2) into a drying oven for drying to obtain a friction material for a brake shoe of a high-speed rail brake;
and 4, step 4: and putting the obtained friction material into a mold of the brake shoe for hot press molding to obtain the prefabricated member of the subway brake shoe.
And 5: and (3) putting the obtained prefabricated part into an oven, and carrying out heat treatment for 16-18 h at the temperature of 150 ℃ to obtain the subway brake shoe.
Preferably, when the materials are mixed in the step 2, the rotating speed of the high-speed mixer is 1200 rpm.
Preferably, when drying in the step 3, the temperature of the oven is 80-85 ℃, the drying time is 1.0-2.0 h,
preferably, the temperature of the hot-press molding in the step 4 is 180-230 ℃, the pressure is 8-12 MPa, and the time is 100-250 s.
The invention has the beneficial effects that:
the friction material for the brake shoe of the high-speed rail and the brake shoe prepared by the method have the characteristics of good heat resistance, low stable friction coefficient and good shock resistance effect, can prevent the transfer, bonding, damage and scratch of a base material of the brake shoe during braking, and the defects of brake shoe block falling/crack, metal inlay and the like during braking, further protect a dual material, reduce the generation of fatigue crack and prolong the service life of a wheel tread.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and the description of the present invention, and any methods, apparatuses, and materials similar or equivalent to those described in the examples of the present invention may be used to practice the present invention.
The first embodiment is as follows:
a friction material for a brake shoe of a high-speed rail comprises the following raw materials in parts by weight:
15 parts of steel fiber, 7 parts of red copper fiber, 5 parts of basalt fiber, 8 parts of ceramic fiber, 5 parts of glass fiber, 8 parts of modified phenolic resin, 10 parts of graphite, 3 parts of nitrile rubber powder, 5 parts of carbon/carbon powder, 1 part of magnesium oxide powder, 2 parts of molybdenum disulfide powder, 2 parts of alumina powder and 12 parts of barium sulfate powder.
Wherein the carbon/carbon powder is obtained by turning a carbon disk subjected to high-temperature heat treatment at 2000 ℃ into 50-mesh particles, and the density of the carbon disk is 1.60g/cm3The carbon/carbon powder obtained had a carbon fiber content of 50%.
The length-diameter ratio of the steel fiber is 30: 1, the length-diameter ratio of the red copper fibers is 40: 1, the length-diameter ratio of the basalt fibers is 200: 1, the diameters of the steel fiber, the basalt fiber, the red copper fiber, the glass fiber and the basalt fiber are all 0.04 mm.
A method for preparing a brake shoe for a high-speed rail comprises the following steps:
step 1: putting the steel fibers, the red copper fibers, the basalt fibers, the ceramic fibers, the glass fibers and the carbon/carbon powder which are weighed according to the weight parts into a high-speed mixer for premixing to obtain a premix;
step 2: putting the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder which are weighed according to the parts by weight into a high-speed mixer, and uniformly mixing the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder with the premix obtained in the step 1, wherein the rotating speed of the high-speed mixer is 1200rpm, so that a mixture is obtained;
and step 3: putting the mixture obtained in the step (2) into an oven for drying, wherein the temperature of the oven is 85 ℃ and the drying time is 1.5h during drying, so as to obtain the friction material for the brake shoe of the high-speed rail brake;
and 4, step 4: and putting the obtained friction material into a mold of a brake shoe for hot press molding, wherein the temperature of the hot press molding is 200 ℃, the pressure is 10MPa, and the time is 150s, so as to obtain the prefabricated member of the subway brake shoe.
And 5: and (3) putting the obtained prefabricated part into an oven, and carrying out heat treatment for 18h at the temperature of 150 ℃ to obtain the subway brake shoe.
The subway brake shoe is prepared by the embodiment, the average value of the friction coefficient of the dry parking brake test is 0.32, the average value of the friction coefficient of the simulation operation test is 0.31, the average value of the static friction coefficient is 0.45, and the average value of the friction coefficient of the wet parking brake test is 0.30.
Example two:
20 parts of steel fiber, 10 parts of red copper fiber, 10 parts of basalt fiber, 12 parts of ceramic fiber, 10 parts of glass fiber, 12 parts of modified phenolic resin, 15 parts of graphite, 5 parts of nitrile rubber powder, 8 parts of carbon/carbon powder, 2 parts of magnesium oxide powder, 6 parts of molybdenum disulfide powder, 5 parts of alumina powder and 18 parts of barium sulfate powder.
Wherein the carbon/carbon powder is obtained by turning a carbon disk subjected to high-temperature heat treatment at 2500 ℃ into 50-mesh particles, and the density of the carbon disk is 1.70g/cm 3. In the obtained carbon/carbon powder, the content of carbon fibers is 60%, and the length-diameter ratio of the steel fibers is 90: 1, the length-diameter ratio of the red copper fibers is 80: 1, the length-diameter ratio of the basalt fibers is 350: 1, the diameters of the steel fibers, the red copper fibers and the basalt fibers are 0.05 mm.
A method for preparing a brake shoe for a high-speed rail comprises the following steps:
step 1: putting the steel fibers, the red copper fibers, the basalt fibers, the ceramic fibers, the glass fibers and the carbon/carbon powder which are weighed according to the weight parts into a high-speed mixer for premixing to obtain a premix;
step 2: putting the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder which are weighed according to the parts by weight into a high-speed mixer, and uniformly mixing the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder with the premix obtained in the step 1, wherein the rotating speed of the high-speed mixer is 1200rpm, so that a mixture is obtained;
and step 3: putting the mixture obtained in the step (2) into an oven for drying, wherein the temperature of the oven is 85 ℃ and the drying time is 1.0h during drying, so as to obtain the friction material for the brake shoe of the high-speed rail brake;
and 4, step 4: and putting the obtained friction material into a mold of a brake shoe for hot press molding, wherein the temperature of the hot press molding is 230 ℃, the pressure is 9MPa, and the time is 120s, so as to obtain the prefabricated member of the subway brake shoe.
And 5: and (3) putting the obtained prefabricated part into an oven, and carrying out heat treatment for 16h at the temperature of 150 ℃ to obtain the subway brake shoe.
The subway brake shoe is prepared by the embodiment, the average value of the friction coefficient of the dry parking brake test is 0.35, the average value of the friction coefficient of the simulation operation test is 0.34, the average value of the static friction coefficient is 0.48, and the average value of the friction coefficient of the wet parking brake test is 0.33.
In conclusion, the friction material for the brake shoe of the high-speed rail and the brake shoe prepared by the method have the characteristics of good heat resistance, low stable friction coefficient and good shock resistance effect, can prevent the transfer, bonding, damage and scratch of a base material of the brake shoe during braking, and the defects of brake shoe block falling/cracking, metal inlay and the like generated during braking, further protect the dual material, reduce the abrasion of the wheel tread and the generation of fatigue crack of the wheel tread, and prolong the service life of the wheel tread.
The foregoing embodiments are merely illustrative of the principles of this invention and its efficacy, rather than limiting it, and various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (9)

1. The friction material for the brake shoe of the high-speed rail is characterized by comprising the following raw materials in parts by weight:
15-20 parts of steel fiber, 7-10 parts of red copper fiber, 5-10 parts of basalt fiber, 8-12 parts of ceramic fiber, 5-10 parts of glass fiber, 8-12 parts of modified phenolic resin, 10-15 parts of graphite, 3-5 parts of butadiene-acrylonitrile rubber powder, 5-8 parts of carbon/carbon powder, 1-2 parts of magnesium oxide powder, 2-6 parts of molybdenum disulfide powder, 2-5 parts of aluminum oxide powder and 12-18 parts of barium sulfate powder.
2. The friction material for the brake shoe of the high-speed rail as claimed in claim 1, wherein the carbon/carbon powder is obtained by turning a carbon disc subjected to high-temperature heat treatment at 2000-2500 ℃ into particles smaller than 60 meshes.
3. The friction material for a brake shoe of a high-speed railway as claimed in claim 2, wherein the density of the carbon disk is 1.60-1.70g/cm 3. In the obtained carbon/carbon powder, the content of the carbon fiber is 50-60%.
4. The friction material for the brake shoe of the high-speed rail as claimed in claim 3, wherein the aspect ratio of the steel fiber is (30-90): 1, the length-diameter ratio of the red copper fibers is (40-80): 1, the length-diameter ratio of the basalt fibers is (200-350): 1.
5. the friction material for a brake shoe of a high-speed rail according to claim 4, wherein the diameter of the steel fibers, the red copper fibers and the basalt fibers is 0.04 to 0.05 mm.
6. A method for preparing a brake shoe for a high-speed rail is characterized by comprising the following steps:
step 1: putting steel fibers, red copper fibers, basalt fibers, ceramic fibers, glass fibers and carbon/carbon powder which are weighed according to parts by weight into a high-speed mixer for premixing to obtain a premix;
step 2: putting the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder which are weighed according to the parts by weight into a high-speed mixer, and uniformly mixing the modified phenolic resin, the graphite, the nitrile rubber powder, the carbon/carbon powder, the magnesium oxide powder, the molybdenum disulfide powder, the alumina powder and the barium sulfate powder with the premix obtained in the step 1 to obtain a mixture;
and step 3: putting the mixture obtained in the step (2) into a drying oven for drying to obtain a friction material for a brake shoe of a high-speed rail brake;
and 4, step 4: putting the obtained friction material into a mold of a brake shoe for hot press molding to obtain a prefabricated member of the subway brake shoe;
and 5: and (3) putting the obtained prefabricated part into an oven, and carrying out heat treatment for 16-18 h at the temperature of 150 ℃ to obtain the subway brake shoe.
7. The method for preparing the high-speed brake lining using the composite wear-resistant material according to claim 6, wherein the high-speed mixer rotates at 1200rpm during the mixing in the step 2.
8. The method for preparing the high-speed rail brake pad using the composite wear-resistant material according to claim 7, wherein the drying time in the step 3 is 1.0-2.0 hours, and the temperature of the drying oven is 80-85 ℃.
9. The method for preparing the high-speed rail brake pad applying the composite wear-resistant material as claimed in claim 8, wherein the hot-press molding in the step 4 is performed at a temperature of 180-230 ℃, a pressure of 8-12 MPa, and a time of 100-250 s.
CN202210007434.9A 2022-01-06 2022-01-06 Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe Withdrawn CN114369333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210007434.9A CN114369333A (en) 2022-01-06 2022-01-06 Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe

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Application Number Priority Date Filing Date Title
CN202210007434.9A CN114369333A (en) 2022-01-06 2022-01-06 Friction material for brake shoe of high-speed rail brake and method for preparing brake shoe

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114871429A (en) * 2022-05-26 2022-08-09 北京瑞斯福高新科技股份有限公司 Powder metallurgy friction material for new-generation high-speed motor train unit and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114871429A (en) * 2022-05-26 2022-08-09 北京瑞斯福高新科技股份有限公司 Powder metallurgy friction material for new-generation high-speed motor train unit and preparation method thereof
CN114871429B (en) * 2022-05-26 2024-02-20 北京瑞斯福高新科技股份有限公司 Powder metallurgy friction material for high-speed motor train unit and preparation method thereof

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Application publication date: 20220419