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CN109458413B - Silicon carbide brake pad - Google Patents

Silicon carbide brake pad Download PDF

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Publication number
CN109458413B
CN109458413B CN201811338143.8A CN201811338143A CN109458413B CN 109458413 B CN109458413 B CN 109458413B CN 201811338143 A CN201811338143 A CN 201811338143A CN 109458413 B CN109458413 B CN 109458413B
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Prior art keywords
brake
brake pad
silicon carbide
layer
parts
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CN201811338143.8A
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CN109458413A (en
Inventor
张宇健
张磊
李军
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HARBIN XINHUI SPECIAL CERAMIC CO Ltd
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Ruian Chengfeng Plastic Co Ltd
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    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • 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
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/448—Sulphates or sulphites
    • 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
    • F16D2069/002—Combination of different friction materials
    • 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
    • F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
    • 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
    • F16D2069/005—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces having a layered structure
    • F16D2069/007—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces having a layered structure comprising a resilient layer
    • 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
    • F16D69/04—Attachment of linings
    • F16D2069/0425—Attachment methods or devices
    • F16D2069/045—Bonding
    • F16D2069/0466—Bonding chemical, e.g. using adhesives, vulcanising
    • 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
    • F16D2200/0043—Ceramic base, e.g. metal oxides or ceramic binder
    • 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
    • F16D2200/0078—Materials; Production methods therefor laminated
    • 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
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0061—Joining
    • F16D2250/0069—Adhesive bonding

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention provides a silicon carbide brake pad which comprises a brake pad monomer, a connecting plate and a hydraulic cylinder, wherein the brake pad monomer is arranged on the brake pad monomer; the brake block monomer is of a four-layer structure, and is sequentially provided with a friction layer, a heat insulation bottom cushion layer, a buffer connecting device layer and a bottom plate layer; the upper surface of the friction layer is provided with a concave-convex structure matched with the bulge on the brake disc; the brake block monomer welding is on the connecting plate, and the brake block monomer group that the connecting plate can connect brake dish with one side constitutes brake block monomer group, and the brake block monomer group of brake dish both sides sets up for the symmetry. The connecting plates on the two sides of the brake disc are controlled by an oil circuit system of the same hydraulic cylinder, and the manufactured silicon carbide brake pad has the advantages of high temperature and friction resistance, high strength, low possibility of damage, daily corrosion resistance, excellent short-distance braking performance and the like, and is low in manufacturing cost and easy for mass production.

Description

Silicon carbide brake pad
Technical Field
The invention belongs to the field of brakes, and particularly relates to a brake pad made of silicon carbide materials.
Background
Braking is commonly known as "braking". Stopping or reducing the speed of a running vehicle, other transportation means, machine, or the like. The general principle of braking is that a wheel or disk is fixed on the high-speed shaft of the machine, and a brake shoe, belt or disk matched with the wheel or disk is mounted on the machine base, so that the wheel or disk can produce braking torque under the action of external force. The electric bicycle is a special bicycle with two wheels and using accumulator as auxiliary energy source, and can implement manual riding, electric or electric boosting function. But mainly is a person traffic tool which is installed with an electromechanical integration of an electric motor, a controller, a storage battery, a rotating handle, a brake handle and other operation components and a display instrument system on the basis of a common bicycle; silicon carbide is prepared from quartz sand, petroleum coke, wood chips and other raw materials, and the silicon carbide material is used as a novel material which is the most extensive in application field, and has the advantages of wear resistance, corrosion resistance, oxidation resistance, high heat conduction speed, difficulty in deformation at high temperature and the like when being increasingly applied to the production of silicon carbide ceramics.
Application No. CN201420112280.0 discloses a device capable of shortening braking distance of an electric bicycle, which can reverse the motor of the electric bicycle through the circuit when braking, so as to realize short-distance braking during emergency braking, but this novel brake frequently needs to make the motor used as a power source reverse to generate unstable current to cause damage to the motor when frequently used, so that the motor of the electric bicycle is easily damaged.
The application document with the application number of CN201220694787.2 discloses a double-sided disc brake, which overcomes the defects of unstable and easy deformation of single-sided stress of the traditional one-way clamping type mechanical disc brake through double-sided clamping brake, has stronger braking force and can realize emergent short-distance braking, has a direct double-sided clamping mode, is convenient to install, simultaneously moves and clamps the disc brake on two sides simultaneously, and is light and thin; however, as the brake of the electric vehicle is very frequent, the novel friction plate and the disc are only braked by the traditional direct friction, the friction plate is damaged due to the long-time friction between the novel friction plate and the disc, and the brake failure can be caused when the condition is serious.
The brake on the market at present is comparatively fixed in form, and the structure and the material of brake can not satisfy the demand of frequent brake braking and short distance scram when emergency braking in daily life, consequently need improve in above each side urgently.
Disclosure of Invention
The invention overcomes the defects and provides the silicon carbide brake pad and the preparation method thereof, and the prepared silicon carbide brake pad has the advantages of high-temperature friction resistance, high strength, low possibility of damage, daily corrosion resistance, excellent short-distance braking performance and the like, and is low in manufacturing cost and easy for mass production.
A silicon carbide brake pad comprises a brake pad monomer, a connecting plate with a connecting arm and a hydraulic cylinder; the brake pad is characterized in that the brake pad monomer is of a four-layer structure, and is sequentially provided with a friction layer, a heat insulation bottom pad, a buffer connecting device layer and a bottom plate; the upper surface of the friction layer is provided with a concave-convex structure matched with the bulge on the brake disc; the brake block monomer welding be in on the connecting plate, the connecting plate can be connected the brake block monomer group of brake dish with one side is constituteed to the brake block monomer, the brake block monomer group of brake dish both sides sets up for the symmetry. The connecting plates on two sides of the brake disc are controlled by an oil circuit system of the same hydraulic cylinder, and each connecting plate is connected with three to four brake pad monomers.
The connecting plate is made of 60Si2 Mn.
The brake pad monomer is roughly cylindrical, and the concave-convex structure on the upper surface of the friction layer of the brake pad monomer is a groove uniformly arranged along the circumferential direction.
The concave-convex structure on the upper surface of the friction layer of the brake pad monomer is a groove which is obliquely arranged.
The buffer connecting device layer comprises an upper asbestos wrapping layer, a lower asbestos wrapping layer and a hard spring string group clamped between the upper asbestos wrapping layer and the lower asbestos wrapping layer. The hard springs of the hard spring string group are arranged between the upper asbestos wrapping layer and the lower asbestos wrapping layer in parallel.
The brake pad monomer is prepared from silicon carbide serving as a main material, the carbon content of the brake pad monomer is 10-35% of the weight of the brake pad monomer, and the brake pad monomer specifically comprises the following raw materials in parts by weight: 30-35 parts of silicon carbide, 15-23 parts of manganese oxide, 12-18 parts of barium sulfate, 9-17 parts of silicon dioxide, 10-13 parts of aluminum oxide, 5-10 parts of magnesium oxide and 5-8 parts of zirconium oxide; wherein the silicon carbide on the brake pad is in the shape of coarse ceramic particles, and the diameter of the particles is 0.2-3 mm.
The friction layer, the heat insulation bottom cushion layer, the buffer connecting device layer and the bottom plate layer of the brake pad monomer are connected through a binder, the binder is specifically polyamide resin, and the polyamide resin is uniformly coated among the layers.
The invention has the beneficial effects that:
(1) the traditional brake block is a single block, the driving force of the traditional brake block is arranged at a certain point on the whole brake block, the brake block on one side of a brake disc is always subjected to inclined abrasion after friction braking with the brake disc for a long time, the surface of the brake block is inclined after the surface of the brake block is seriously abraded, so that the matching between the brake block and the brake disc is unstable, and the friction area is reduced;
(2) the silicon carbide brake pad is made of silicon carbide as a main material, adopts the component combination with the carbon content of 10-35%, fully utilizes the high-temperature anti-friction capability of the silicon carbide material and the buffer capability improved to a certain extent after other metal materials are mixed and subjected to high-temperature smelting processing, and provides an optimal manufacturing method of the silicon carbide brake pad.
(3) The invention adopts a plurality of layers of silicon carbide brake block monomers, each layer is connected by using the adhesive, the adhesive is polyamide resin which is uniformly coated between each layer and can play a role of sufficient buffering, and each layer of the silicon carbide brake block monomers can generate different functions.
Drawings
FIG. 1 is a schematic view of the overall structure of a silicon carbide brake pad according to the present invention;
FIG. 2 is a schematic structural view of a silicon carbide brake pad monomer according to the present invention;
FIG. 3 is a schematic structural diagram of a silicon carbide brake pad according to an embodiment of the present invention.
Detailed Description
The silicon carbide brake pad of the present invention will be described in detail with reference to fig. 1 to 3.
Example 1
A silicon carbide brake pad comprises a brake pad monomer 1, a connecting plate 2 with a connecting arm 201 and a hydraulic cylinder 3; the brake pad is characterized in that the brake pad single body 1 is of a four-layer structure and is sequentially provided with a friction layer 101, a heat insulation bottom pad 102, a buffer connecting device layer 103 and a bottom plate 104; the upper surface of the friction layer 101 is provided with a concave-convex structure 1011 matched with the bulge on the brake disc 4; the brake block monomer 1 welding be in on the connecting plate 2, connecting plate 2 can connect brake disc 4 constitutes brake block monomer group with the brake block monomer 1 of one side, the brake block monomer group of 4 both sides of brake disc sets up for the symmetry.
The connecting plates 2 on two sides of the brake disc 4 are controlled by an oil circuit system of the same hydraulic cylinder 3, and each connecting plate 2 is connected with three to four brake pad monomers 1.
The connection plate 2 is made of 60Si2 Mn.
The brake pad single body 1 is in a substantially cylindrical shape, and the concave-convex structures 1011 on the upper surface of the friction layer 101 of the brake pad single body 1 are grooves uniformly arranged along the circumferential direction. The grooves are preferably provided in six and each groove may have a depth of 2-5mm to facilitate cooperation with the protrusions on the brake disc 4 to enhance braking force; the groove can be further provided with a plurality of radiating holes, and the radiating holes are positioned in the groove and cannot directly receive friction force between the radiating holes and the brake disc 4 during braking, so that stress concentration on the brake pad monomer 1 cannot be caused by defects of the radiating holes in the groove.
The concave-convex structure 1011 on the upper surface of the friction layer 101 of the brake pad single body 1 is a groove which is obliquely arranged.
The buffer connecting device layer 103 comprises an upper asbestos wrapping layer and a lower asbestos wrapping layer and a hard spring string group clamped between the two asbestos wrapping layers. The hard springs of the hard spring string group are arranged between the upper asbestos wrapping layer and the lower asbestos wrapping layer in parallel.
The brake pad monomer 1 is made of silicon carbide as a main material, the carbon content of the brake pad monomer 1 is 10-35% of the weight of the brake pad monomer, and the brake pad monomer specifically comprises the following raw materials in parts by weight: 30-35 parts of silicon carbide, 15-23 parts of manganese oxide, 12-18 parts of barium sulfate, 9-17 parts of silicon dioxide, 10-13 parts of aluminum oxide, 5-10 parts of magnesium oxide and 5-8 parts of zirconium oxide, which are formed by high-temperature smelting in a resistance furnace; the silicon carbide brake pad prepared by the method has high friction durability at high temperature, which is greatly improved compared with the common steel brake pad.
The friction layer 101, the heat insulation bottom cushion layer 102, the buffer connecting device layer 103 and the bottom plate layer 104 of the brake pad monomer 1 are connected through a bonding agent, the bonding agent is specifically polyamide resin, and the polyamide resin is uniformly coated among the layers.
According to the invention, the plurality of brake pad monomers are arranged in parallel, and are linked and pressed during braking, so that uneven friction caused by overlarge stress on a certain point during braking can be avoided, and the matching area between the whole brake pad and a brake disc after emergency braking is increased; the silicon carbide brake pad is made of silicon carbide serving as a main material, the mass fraction of carbon content is 10-35%, the high-temperature anti-friction capability of the silicon carbide material is fully utilized, and the buffering capability is improved to a certain extent after the silicon carbide brake pad is mixed with other metal materials and subjected to high-temperature smelting processing, so that the optimal manufacturing method of the silicon carbide brake pad is provided.
The brake pad adopts a plurality of layers of silicon carbide brake pad monomers, and specifically comprises a friction layer 101, a heat insulation bottom pad 102, a buffer connecting device layer 103 and a bottom plate, wherein the friction layer 101 is formed by grinding high-temperature wear-resistant material silicon carbide which is smelted in a resistance furnace at high temperature, and the carbon content is 10-35% of the weight of the brake pad monomer 1; the heat insulation bottom pad is made of a heat insulation material, a plurality of heat dissipation holes can be further formed in the heat insulation bottom pad, and the friction layer of the brake pad is cooled through the heat dissipation hole channels, so that the brake capacity is prevented from being reduced due to overhigh temperature of the friction layer caused by frequent use; the buffer connecting device layer consists of two asbestos wrapping layers and a hard spring string group clamped between the wrapping layers, the asbestos wrapping layers can be sewn or directly bonded by adopting a mechanical method, and the mutually fixedly connected asbestos wrapping layers wrap the hard spring string between the layers to prevent the hard spring string from being dislocated in the movement process and play a buffer role; the bottom plate comprises magnalium metal alloy, can realize better heat dispersion when guaranteeing the hardness as the base plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (5)

1. A silicon carbide brake pad comprises a brake pad monomer (1), a connecting plate (2) with a connecting arm (201) and a hydraulic cylinder (3); the brake pad is characterized in that the brake pad single body (1) is of a four-layer structure, and is sequentially provided with a friction layer (101), a heat insulation bottom pad (102), a buffer connecting device layer (103) and a bottom plate (104); the upper surface of the friction layer (101) is provided with a concave-convex structure (1011) matched with the bulge on the brake disc (4); the brake block single bodies (1) are welded on the connecting plate (2), the connecting plate (2) can be connected with the brake block single bodies (1) on the same side of the brake disc (4) to form a brake block single body group, the brake block single body groups on two sides of the brake disc (4) are symmetrically arranged, and the number of the brake block single bodies (1) contained in the two brake block single body groups is the same; the connecting plates (2) on two sides of the brake disc (4) are controlled by an oil circuit system of the same hydraulic cylinder (3), and each connecting plate (2) is connected with three to four brake pad monomers (1) through a connecting arm (201); the brake pad single body (1) is approximately cylindrical, and concave-convex structures (1011) on the upper surface of a friction layer (101) of the brake pad single body (1) are grooves uniformly arranged along the circumferential direction; the buffer connecting device layer (103) comprises an upper asbestos wrapping layer, a lower asbestos wrapping layer and a hard spring string group clamped between the upper asbestos wrapping layer and the lower asbestos wrapping layer; a plurality of heat dissipation holes are formed in the groove and are located in the groove.
2. Silicon carbide brake pad according to claim 1, characterized in that the connection plate (2) consists of 60Si2Mn.
3. The silicon carbide brake pad according to claim 1, characterized in that the concave-convex structure (1011) on the upper surface of the friction layer (101) of the brake pad single body (1) is a groove arranged obliquely.
4. The silicon carbide brake pad according to claim 1, wherein the hard springs of the hard spring string are juxtaposed between the upper and lower asbestos-coated sheets.
5. The silicon carbide brake pad according to claim 1 or 2, wherein the brake pad monomer (1) is made of silicon carbide as a main material, and specifically comprises the following raw materials in parts by weight: 30-35 parts of silicon carbide, 15-23 parts of manganese oxide, 12-18 parts of barium sulfate, 9-17 parts of silicon dioxide, 10-13 parts of aluminum oxide, 5-10 parts of magnesium oxide and 5-8 parts of zirconium oxide, which are formed by high-temperature smelting in a resistance furnace; wherein the silicon carbide on the brake pad is in the shape of coarse ceramic particles, and the diameter of the particles is 0.2-3 mm.
CN201811338143.8A 2018-11-12 2018-11-12 Silicon carbide brake pad Active CN109458413B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201354820Y (en) * 2008-12-29 2009-12-02 河北百吉汽车配件有限公司 Double-layer high-strength wear resistant brake pad
CN102102720A (en) * 2009-12-18 2011-06-22 中国科学院金属研究所 Ceramic/metallic double continuous phase composite material brake pad and preparation method thereof
CN105240424A (en) * 2015-11-23 2016-01-13 吴泽忠 Emergent brake device for vehicle
CN106763329A (en) * 2016-11-30 2017-05-31 北京天宜上佳新材料股份有限公司 The processing method of automobile brake sheet and automobile brake sheet
CN206668828U (en) * 2017-04-21 2017-11-24 奉化市东成摩擦材料有限公司 A kind of braking device with damping dust discharging function
CN107420466A (en) * 2017-09-25 2017-12-01 赵东顺 A kind of debris removal cooling brake disc
CN107763124A (en) * 2017-10-24 2018-03-06 北京天仁道和新材料有限公司 A kind of brake block and preparation method thereof
CN108757786A (en) * 2018-06-07 2018-11-06 北京天宜上佳高新材料股份有限公司 A kind of friction material and the brake block formed by its preparation and preparation method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201354820Y (en) * 2008-12-29 2009-12-02 河北百吉汽车配件有限公司 Double-layer high-strength wear resistant brake pad
CN102102720A (en) * 2009-12-18 2011-06-22 中国科学院金属研究所 Ceramic/metallic double continuous phase composite material brake pad and preparation method thereof
CN105240424A (en) * 2015-11-23 2016-01-13 吴泽忠 Emergent brake device for vehicle
CN106763329A (en) * 2016-11-30 2017-05-31 北京天宜上佳新材料股份有限公司 The processing method of automobile brake sheet and automobile brake sheet
CN206668828U (en) * 2017-04-21 2017-11-24 奉化市东成摩擦材料有限公司 A kind of braking device with damping dust discharging function
CN107420466A (en) * 2017-09-25 2017-12-01 赵东顺 A kind of debris removal cooling brake disc
CN107763124A (en) * 2017-10-24 2018-03-06 北京天仁道和新材料有限公司 A kind of brake block and preparation method thereof
CN108757786A (en) * 2018-06-07 2018-11-06 北京天宜上佳高新材料股份有限公司 A kind of friction material and the brake block formed by its preparation and preparation method

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