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1507results about "Braking discs" patented technology

High-strength short fiber carbon ceramic brake disc and preparation method thereof

PendingCN119490353ASmall and uniform particle sizeevenly dispersedBraking discsActuatorsCeramic compositeBall mill
The invention discloses a high-strength short fiber carbon ceramic brake disc and a preparation method thereof, and the preparation method comprises the following steps: carrying out ball milling on silicon powder and carbon powder, mixing with thermosetting resin powder and thermoplastic resin powder, uniformly mixing carbon fiber and a coupling agent, adding the mixed powder, and uniformly mixing again. According to the short fiber carbon ceramic brake disc provided by the invention, the ball-milled silicon powder and carbon powder are uniformly dispersed in the matrix, meanwhile, the thermoplastic resin with good fluidity is added to form a network structure in the matrix, through holes are formed after carbonization, and the high-strength short fiber carbon ceramic brake disc is obtained. Silicon steam can enter in the ceramization process, and the problem that the carbon-ceramic composite material which is high in fiber content and large in thickness and formed at high temperature and high pressure is difficult to infiltrate can be effectively solved. The carbon-ceramic short fiber brake disc prepared by the method is low in aperture ratio and high in impact strength.
Owner:HUNAN SHIXIN NEW MATERIALS CO LTD

Component of a brake for a vehicle and method for the production thereof

The invention relates to a component of a brake for a vehicle, comprising a metal main body having a surface (5a, 5b) that is provided with a coating (B) for increasing the wear resistance thereof, said coating comprising an intermediate layer (Z) deposited on the main body (2) and a cover layer (D) deposited on the intermediate layer (Z), the cover layer (D) being formed from a stainless steel matrix (E) having hard material particles (HP) embedded therein. In order to furthermore confer optimized use properties to such a component, the invention proposes that the hard material particles (HP) embedded into the stainless steel matrix (E) of the cover layer (D) have an average particle diameter of 10 µm to 125 µm and that the hard material particles (HP) have a non-molten core region (K) which is composed of uninfluenced material of the hard material particles (HP), said core region being surrounded at least in sections by a mixing zone (M) formed by material of the stainless steel matrix (E) and material of the respective hard material particle (HP), by means of which the hard material particles (HP) are in each case connected to the stainless steel matrix (E) in an integrally bonded manner. The invention also proposes a method, by which such a coated component can be produced.
Owner:FRITZ WINTER EISENGIESSEREI GMBH & CO KG

Preparation method of carbon fiber reinforced metal matrix composite brake disc

The invention relates to a preparation method of a carbon fiber reinforced metal matrix composite brake disc, and belongs to the technical field of brake disc preparation. Immersing the carbon fiber in an ethanol solution containing a silane coupling agent, and drying; the aluminum-based alloy powder, the copper-based alloy powder and the silicon carbide particles are put into a planetary ball mill to be subjected to ball milling, and metal matrix mixed powder is obtained; the pretreated carbon fibers are woven into a three-dimensional woven prefabricated body, then pores of the prefabricated body are evenly filled with metal matrix mixed powder, cold press molding is conducted, and a composite material prefabricated body is obtained; putting the composite material prefabricated body into a vacuum hot-pressing sintering furnace, and sintering to form a carbon fiber reinforced metal matrix composite material brake disc blank; after solution treatment, adding a rare earth coordination type enhancer and carrying out aging treatment; the carbon fiber reinforced metal matrix composite brake disc prepared by the method has excellent wear resistance and mechanical properties, and can meet the use requirements of modern high-performance vehicles on brake discs.
Owner:烟台美丰机械集团有限公司

Ceramic reinforced iron-based wear-resistant coating for cast iron brake disc and preparation method of ceramic reinforced iron-based wear-resistant coating

The invention belongs to the technical field of brake discs, and relates to a cast iron brake disc ceramic reinforced iron-based wear-resistant coating and a preparation method thereof.The cast iron brake disc ceramic reinforced iron-based wear-resistant coating comprises a brake disc base body, an iron-based transition coating and a composite wear-resistant coating, the composite wear-resistant coating is formed by mixing iron-based alloy powder, B4C ceramic particles and CeO2 rare earth powder; the preparation method comprises the following steps: 1, carrying out laser cladding on iron-based alloy powder on a brake disc substrate to prepare an iron-based transition coating; 2, carrying out ball milling and mixing according to a weight ratio to prepare composite wear-resistant mixed powder; 3, performing laser cladding on the iron-based transition coating with composite wear-resistant mixed powder; the B4C + CeO2 ceramic particles are mixed into the iron-based alloy powder, so that microcracks of the brake disc coating are reduced, the wear resistance and hardness are improved, dust pollution is reduced, the service life is prolonged, and the friction performance better meets the brake disc strengthening requirement.
Owner:XIAN UNIV OF TECH

Brake disc

The utility model provides a brake disc which comprises a friction ring, a first connecting piece and a second connecting piece. A second connecting piece is annularly arranged on the outer ring of the disc cap, the first connecting piece and the second connecting piece are fixedly connected in the axial direction of the brake disc, the second connecting piece is provided with a plurality of interval parts and a plurality of abutting parts, the interval parts and the abutting parts are annularly arranged at intervals in the circumferential direction of the disc cap, and the abutting parts abut against the first connecting piece; the interval part is located on the side, facing the first connecting piece, of the second connecting piece, the first connecting piece and the second connecting piece form an interval in the axial direction of the brake disc through the interval part, and the second connecting piece can deform through the interval part. By means of the technical scheme, the problem that in the prior art, a split type brake disc is poor in thermal deformation performance can be solved.
Owner:YANTAI WINHERE AUTO PART MFG

Multi-part brake disc, friction disc ring, fastening element and brake disc production method

The invention relates to a multi-part brake disc, in particular a lightweight brake disc, comprising a friction disc ring part and a receiving cup part, the friction disc ring part being arranged radially outside the receiving cup part in a torque-resistant manner. Further, the friction disc ring part and the receiving cup part are operably connected by at least one elongate fastening element, where the at least one elongate fastening element is arranged in the through hole of the receiving cup part and the bore hole of the friction disc ring part. The multi-part brake disc is characterized in that the at least one elongated fastening element is arranged simultaneously in the receiving cup part and the friction disc ring part only in an inserted manner, and the at least one elongated fastening element is fixed in the friction disc ring part in a frictional locking manner.
Owner:GOTEC GORSCHLÜTER GMBH

Grey cast iron, in particular for disc brake components

A grey cast iron may have within a ferrous matrix: an amount of carbon between 3.60 and 3.90% by weight; an amount of silicon between 1.40 and 1.90% by weight; an amount of titanium not higher than 0.10% by weight; an amount of boron between 0.04 and 0.07% by weight; an amount of vanadium between 0.07 and 0.14% by weight; an amount of manganese between 0.60% and 0.90% by weight; an amount of nickel not higher than 0.20% by weight; an amount of chromium not higher than 0.35% by weight; an amount of copper not higher than 0.35% by weight; an amount of phosphorus not higher than 0.10% by weight; an amount of sulphur not higher than 0.12% by weight; an amount of tin not higher than 0.10% by weight; an amount of molybdenum not higher than 0.10% by weight.
Owner:FRENI BREMBO SPA

Preparation method of performance-adjustable carbon-ceramic brake disc

The invention relates to a preparation method of a brake disc, in particular to a preparation method of a performance-adjustable carbon-ceramic brake disc, and solves the technical problems of lower mechanical property, poorer toughness, non-uniform structure, unstable performance, long preparation period and more residual Si in the existing carbon-ceramic brake disc. The method comprises the following steps: 1) preparing an interface layer on a carbon fiber preform by adopting a reaction precursor to obtain the carbon fiber preform with the interface layer; 2) introducing a ceramic raw material into the carbon fiber preform with the interface layer to obtain a ceramic component-containing carbon fiber preform with the density of 0.7-1.0 g / cm < 3 >; the preparation method comprises the following steps of (1) preparing a carbon fiber preform containing a ceramic component, (2) preparing the carbon fiber preform containing the ceramic component, (3) introducing a carbon source into the carbon fiber preform containing the ceramic component to obtain a carbon-carbon green body, (4) processing the carbon-carbon green body according to a digital model to obtain a carbon-carbon brake disc, and (5) carrying out reaction infiltration on the carbon-carbon brake disc by using a raw material to obtain the carbon-ceramic brake disc with the density of 1.8-2.5 g / cm < 3 >, the particle size range of the raw material is 1-100 [mu] m, and the use amount of the raw material is 1-3 times that of the carbon-carbon brake disc.
Owner:SDIC CERAMIC MATRIX COMPOSITES RES INST (XIAN) CO LTD

Brake caliper with cover

The present disclosure relates to a brake calliper for a disc brake. The brake calliper comprises a supporting structure, a cover with a pin, and a fixing disc. The supporting structure has a bridge and at least one bridge finger which has a brake lining side, an outer side and a bore which is incorporated into the outer side and which runs from the outer side in the direction of the brake lining side. The cover has a pin protruding into the bore. The fixing disc has a disc edge which has an outer diameter D and which is positively held in the bore and with a disc center which has a through-opening, through which the pin protrudes. The disc center has a clamping region which is bulged relative to the disc edge in the direction of the brake lining side and which fixedly clamps the pin in the through-opening by a clamping edge. The disclosure also relates to such a fixing disc itself.
Owner:ZF ACTIVE SAFETY GMBH

Carbon-carbon composites, carbon-ceramic composites and anti-oxidation coatings, aircraft brake discs

The present invention relates to the field of carbon-carbon composite materials, and discloses a carbon-carbon composite material, a carbon-ceramic composite material, an anti-oxidation coating, and an aircraft brake disc. The anti-oxidation coating comprises components by weight: 150 parts of an aqueous solution of aluminum dihydrogen phosphate with a content of 37-43%, 70-130 parts of tin powder, 60-120 parts of silicon carbide powder, 15-60 parts of glass powder with a softening point of 600°C-900°C, 15-50 parts of kaolin, and 10-30 parts of boron carbide powder. The anti-oxidation coating can form a coating with good thermal stability and chemical stability by accurately proportioning and mixing a plurality of materials, and can protect the carbon-carbon composite material from oxidation under a high temperature environment.
Owner:YOUCAITEC MATERIAL CO LTD

Floating brake disc

The invention provides a floating type brake disc which comprises a brake ring which is an annular piece capable of rotating around a central rotation axis, and the central rotation axis defines the axial direction, the radial direction and the circumferential direction of the floating type brake disc. A disc cap configured to have a cap portion extending substantially in a radial direction and a skirt portion defining an annular outer circumferential surface of the disc cap extending in a circumferential direction, the disc cap being detachably attached to an annular inner ring of the brake ring extending in the circumferential direction via the annular outer circumferential surface, the brake ring can move between an attaching position and a separating position relative to one side of the brake ring in the axial direction; and an annular elastic biasing member, the elastic biasing member being arranged in such a way that when the disc cap is in the attached position, the elastic biasing member is arranged between the disc cap and the brake ring in the circumferential direction and exerts a biasing force on the brake ring in the axial direction against the disc cap.
Owner:NANJING YUEJIN BRAKING SYST FOR AUTOMOBILE

Electromagnetic disc brake with automatic clearance compensation function

The invention discloses an electromagnetic disc brake with a gap automatic compensation function, and relates to the technical field of electromagnetic disc brakes, the electromagnetic disc brake comprises a mounting base and a connecting shell, one side of the mounting base is provided with a shell, an electromagnet is mounted in the mounting base, one side of the electromagnet is provided with an armature, and the armature is connected with the shell. One side of the armature is connected with multiple sets of reset springs, and one end of each reset spring is fixed to the inner side of the shell. According to the electromagnetic disc brake with the gap automatic compensation function, the gap between the armature and the electromagnet can be detected through the microswitch, and when the gap exceeds the range, the thin hydraulic cylinder can be started to drive the hydraulic plunger head to push the armature to move, so that the gap between the armature and the electromagnet returns to normal, and compensation is completed; the sealing mechanism can prevent external dust from making contact with the armature and other components, so that the braking effect is kept, and the heat dissipation mechanism can dissipate heat of the braked components.
Owner:NUCLEON XINXIANG CRANE

Preparation method of brake disc for rail transit vehicle

The invention relates to a preparation method of a brake disc for a rail transit vehicle, which comprises the following steps: completely filling a friction layer, a heat dissipation substrate and heat dissipation ribs in a forming stage, but only forming a part of a circular truncated cone, only forming 70-85% of the overall height of the circular truncated cone and 65-85% of the overall inclination of the circular truncated cone, and meanwhile, controlling the shaping pressure to be 150-250MPa, the temperature to be 350-380 DEG C and the time to be 10-30 seconds, so as to facilitate demolding, and meanwhile, forming the brake disc for the rail transit vehicle. When the boss and the remaining circular truncated cone are filled, axial and circumferential materials can synchronously flow to fill the mold cavity, and the situation that the materials flow in other directions after reaching the mold wall and rub the mold wall to roll in a mold release agent attached to the mold wall, and the mold release agent is accumulated is effectively avoided.
Owner:HUNAN JINTIAN ALUMINUM HI TECH CO LTD

Preparation method of carbon-ceramic brake disc with composite friction layer and carbon-ceramic brake disc

The invention relates to a ceramic product and a preparation method thereof, in particular to a preparation method of a carbon-ceramic brake disc with a composite friction layer and the carbon-ceramic brake disc, which are used for overcoming the defects that the production cost is increased and the large-scale application of the carbon-ceramic brake disc is restricted due to low material utilization rate in the manufacturing process of the carbon-ceramic brake disc. The preparation method of the carbon-ceramic brake disc with the composite friction layer sequentially comprises the following steps of preparation of the carbon-carbon composite material, rough machining, preparation of the heat conduction functional layer, preparation of the composite friction layer, ceramic treatment and finish machining. The heat conduction function layer can effectively reduce the temperature of the disc face in the braking process, the service life of calipers and other surrounding accessories is prolonged, the components of the composite friction layer are uniform and can be designed, and noise and shaking can be reduced in the braking process; in addition, the utilization rate of raw materials is improved and the production cost is reduced by using the residual stub bar. Meanwhile, the invention further discloses a carbon ceramic brake disc with the composite friction layer.
Owner:SDIC CERAMIC MATRIX COMPOSITES RES INST (XIAN) CO LTD

Electromagnetic brake with air gap convenient to adjust

The utility model relates to the technical field of brakes, and provides an electromagnetic brake convenient to adjust an air gap, which comprises a stator, an armature and a brake disc which are sequentially arranged in the axial direction, and further comprises a dustproof flange cover, the dustproof flange cover is arranged outside the stator in a matched mode, and the brake disc is arranged between the dustproof flange cover and the armature; an air gap measuring hole is formed in the side of the dustproof flange cover, and a locking screw used for abutting against the stator is screwed into the side of the dustproof flange cover. According to the utility model, the air gap can be adjusted more quickly and conveniently, and the operation is simple.
Owner:CHENGDU CHAODECHUANG TECH CO LTD

Split compound brake device, disassembly and assembly method thereof and railway vehicle

The invention provides a split compound brake device, a disassembly and assembly method thereof and a railway vehicle, the split compound brake device comprises a shell main body, a mandrel, a split static disc, a split movable disc and an actuator, and a plurality of guide parts are respectively constructed in the axial direction of the shell main body; the mandrel is configured in the shell main body, and a disc hub with an axial spline is arranged on the mandrel; the split static disc is matched with the guide part and is suitable for sliding along the guide part; the split type movable disc and the split type static disc are matched to form a friction pair and are configured to slide in the axial direction of the disc hub. The actuators are arranged at the two ends of the shell body and are configured to drive the split type static disc and the split type movable disc to extrude and brake each other. The split type movable discs and the split type static discs are matched to form friction pairs, so that the number of the friction pairs can be increased by increasing the number during connection, then the braking force can be adjusted, the braking force does not need to be adjusted by configuring a plurality of brake discs and clamps, and structure simplification and light weight of the bogie are facilitated.
Owner:CRRC QINGDAO SIFANG CO LTD

Water-cooling brake disc structure

The invention discloses a water-cooling brake disc structure in the technical field of brake discs, which comprises a disc body, calipers and brake pads positioned on two sides of the disc body, and further comprises a pumping and draining piece arranged in the calipers, one side of the pumping and draining piece is connected with a liquid inlet pipe, the other side of the pumping and draining piece is connected with a liquid draining pipe, and in the process that the brake pads on two sides are far away from or close to each other, the liquid draining pipe is connected with the liquid draining pipe. The pumping and draining piece sprays cooling liquid to the side part of the disc body through the liquid inlet pipe and the liquid draining pipe; when the brake pad is controlled to move in the braking process, due to the fact that the vertical plate fixedly connected with the brake pad drives the piston rods on the two sides to act, the piston rods drive the pistons to pump cooling liquid into the piston cylinders through the liquid inlet pipe in the reciprocating motion process of the piston cylinders, then the cooling liquid is discharged through the liquid outlet pipe and sprayed to the brake pad, and cooling treatment is conducted on the brake pad; the whole process does not need to consume electric power resources, is beneficial to energy conservation and environmental protection, and reduces the use cost.
Owner:WUHE GUANGCHI TRANSPORTATION EQUIP CO LTD

Brake disc connecting structure, brake device and railway vehicle

The invention relates to the technical field of rail transit, in particular to a brake disc connecting structure, a full-disc type brake device and a rail vehicle. In the brake disc connecting structure, a brake disc comprises a plurality of brake movable discs and a plurality of brake movable discs which are arranged at intervals, a core shaft is suitable for being connected with a braked power shaft, the core shaft is arranged at the axis of the brake disc in a penetrating mode, the core shaft is fixedly connected with all the brake movable discs and can synchronously rotate, and all the brake discs can enable the core shaft to brake the power shaft through mutual extrusion. Wherein a center plate is arranged in the mandrel, one end of the center plate is connected with the inner wall of the mandrel, and the other end of the center plate is connected with a braked power shaft. The brake disc connecting structure is simple in overall structure and easy to disassemble and assemble, so that the later maintenance cost is reduced; moreover, the brake disc connecting structure utilizes the center plate in the mandrel to realize internal heat dissipation of the mandrel, so that the internal heat transfer path of the mandrel is prolonged, the influence of dynamic heat energy on the motor bearing is effectively reduced, the service life of the motor bearing is prolonged, and the use safety of the motor bearing is improved.
Owner:CRRC QINGDAO SIFANG CO LTD

Carbon-ceramic brake disc with composite functional layer and preparation method of carbon-ceramic brake disc

The invention relates to the technical field of brake discs, in particular to a carbon-ceramic brake disc with a composite functional layer and a preparation method of the carbon-ceramic brake disc. The problems that a brake disc is insufficient in strength and poor in ablation resistance are solved. The preparation method comprises the following steps: carrying out low-temperature plasma treatment and silicon dioxide sol impregnation on carbon fibers, and inserting a graphene oxide film between woven layers, so as to obtain a carbon fiber preform; primary densification is carried out through pretreatment activation, low-temperature permeation and high-temperature permeation, and two graphitization treatments are combined; siliconizing is carried out through low-pressure permeation, high-pressure strengthening and laser cladding, and secondary densification is carried out through precursor impregnation and cracking; the titanium zirconium silicide-nano aluminum oxide composite layer generated through the embedding process forms a compact oxidation film at high temperature, and the silicon carbide nano crystal whiskers are subjected to chemical vapor deposition, so that the strength and ablation resistance of the prepared carbon ceramic brake disc are improved.
Owner:XUANCHENG JIAZI NEW MATERIALS CO LTD

Organic track brake pad material with high friction coefficient and preparation method thereof

The invention belongs to the technical field of brake pad materials, and aims to solve the problems that the friction coefficient of an existing organic-based brake pad is unstable, so that brake failure is likely to occur, the driving safety is affected, the operation cost is increased due to frequent replacement of the brake pad, and normal operation of rail transit is affected. Therefore, the invention provides the organic track brake pad material with the high friction coefficient and the preparation method thereof. The material comprises 20-30% of thermosetting phenolic resin, 8-15% of bismaleimide resin, 8-12% of polyimide resin, 6-10% of high-strength carbon fiber, 6-10% of aramid fiber, 4-8% of basalt fiber, 3-6% of graphite, 2-5% of molybdenum disulfide, 3-6% of copper fiber, 2-5% of silicon carbide particles, 3-6% of barium sulfate, 2-4% of aluminum oxide, 2-4% of talcum powder, 2.5-5% of a curing agent and 1.5-3.5% of other auxiliaries. The friction performance of the organic track brake pad material is improved under the condition that other performance of the organic track brake pad material is not reduced, the defect of the friction performance of an existing brake pad material is effectively overcome, and reliable guarantee is provided for high-performance safe operation of track traffic.
Owner:YOUCAITEC MATERIAL CO LTD

Brake disc, preparation method, braking system and vehicle

The invention provides a brake disc, a preparation method, a braking system and a vehicle. The brake disc comprises a compact area and a plurality of nano-porous areas distributed in the compact area at intervals. Wherein the compact area comprises a carbon fiber reinforced silicon carbide material, and the nano-porous area comprises continuous-phase cracked carbon and carbon particles distributed in the cracked carbon; wherein the pore diameter of the nano-porous area is in the range of 10 nm to 100 nm, and the porosity is in the range of 15% to 30%. The nano porous area in the brake disc can improve the toughness of the brake disc, so that the service life of the carbon ceramic brake disc can be prolonged.
Owner:BYD CO LTD

Reduced drag stator clip

Stator clips may be disposed in the recesses of aircraft brake stator disks to increase the lug strength of the stator disk. The clips may interface with the splines of a torque plate and may comprise ridges that reduce contact between the torque plate barrel and the clip, while maintaining the overall integrity of the clip structure. Furthermore, reduced contact may enable a reduction in drag, improving brake performance.
Owner:GOODRICH CORP

High-strength carbon ceramic brake disc and preparation method thereof

The invention provides a high-strength carbon ceramic brake disc. The high-strength carbon ceramic brake disc comprises 40-60 vol% of carbon, 30-55 vol% of silicon carbide and 3-13 vol% of silicon. The carbon comprises a resin carbon fiber phase and a deposited carbon fiber phase, and the resin carbon fiber phase comprises resin carbon and skeleton carbon fiber coated by the resin carbon; the deposited carbon fiber phase comprises deposited carbon and filled carbon fibers coated with the deposited carbon; the content of the resin carbon fiber phase is 35-55%, and the content of the deposited carbon fiber phase is 3-15%. According to the high-strength carbon ceramic brake disc, the resin carbon fiber phase is used as a main material, the resin is used for impregnating fibers, curing is performed, then chopping is performed, and during chopping and impregnating of the resin carbon fiber phase, due to protection of the resin, fiber damage is small, and the strength of the brake disc is effectively improved; part of filling fibers which are subjected to chemical vapor deposition but have a smaller k value of fiber bundles are also added into a matrix, and a deposited carbon fiber phase can play a role in deflecting cracks in a product due to the existence of an interface of deposited carbon / carbon fibers, so that the toughness of the material is ensured.
Owner:深圳市佰斯倍新材料科技有限公司

Disc brake disc assembly capable of cooling and use method

The invention relates to the technical field of disc brake discs, and particularly discloses a disc brake disc assembly capable of cooling, which comprises a main body structure and a cooling structure, the cooling structure is detachably arranged on a caliper main body of the main body structure, according to the scheme, the disc brake disc is designed to be assembled, and the assembled disc brake disc forms a hollow H shape; meanwhile, copper pipes are symmetrically arranged on the inner side walls, cooling liquid can be contained in the copper pipes, efficient heat conduction, absorption and heat dissipation are conducted, and in the running and rotating process, fan blades in the middle of the disc brake set rotate under wind power to promote and improve internal heat dissipation; in addition, wind power is generated through the cooling assembly by means of an air pump, low-temperature wind power flowing out of one end of a vortex three-way pipe is blown to the disc brake disc through the vortex three-way pipe, the cooling speed is increased, the cooling effect is improved, and driving safety is guaranteed.
Owner:TAIZHOU ANTAI BICYCIE CO LTD

Carbon-ceramic brake disc of gradient composite structure and preparation method and application of carbon-ceramic brake disc

The invention discloses a carbon-ceramic brake disc of a gradient composite structure, the carbon-ceramic brake disc is composed of a porous carbon-ceramic matrix and a gradient composite coating arranged on the surface of the porous carbon-ceramic matrix, the gradient composite coating is composed of a transition layer and a surface layer, the transition layer is a gradient Cf / SiC layer, and the surface layer is a gradient Cf / SiC layer. The carbon-ceramic brake disc comprises a carbon-ceramic base body, a transition layer and a surface layer, the transition layer is arranged on the surface of the carbon-ceramic base body, the volume fraction of carbon fibers in the transition layer is progressively decreased in a gradient mode from inside to outside, the volume fraction of SiC is progressively increased in a gradient mode from inside to outside, and the surface layer is a SiC / ZrB2 composite layer. The gradient composite coating is arranged on the surface of the carbon-ceramic base body, and the volume fraction of the carbon fibers in the inner layer is progressively decreased in a gradient mode from inside to outside; therefore, the difference of interlayer thermal expansion coefficients is greatly reduced, the cracking risk of the surface layer and the matrix is reduced, the surface layer has ultrahigh-temperature protection capability, the interface thermal stress of the carbon-ceramic brake disc provided by the invention is reduced by 62%, and the ultrahigh-temperature service life is prolonged by more than 3 times.
Owner:CHINA STATE RAILWAY GRP CO LTD +1

Ceramic particualte coating for wear improvement

A method is provided for decreasing a wear rate of a brake stack or a heat sink wear rate and increasing a brake life of the brake stack or the heat sink. The method includes coating a wear surface of a brake disk with at least one of an engineered ceramic material or ceramic solution, thereby forming a coated brake disk and installing the coated brake disk in a multi-disk brake system.
Owner:GOODRICH CORP

High-speed laser cladding metal ceramic coating, cast iron brake disc and preparation method and application of cast iron brake disc

The invention provides a high-speed laser cladding metal ceramic coating, a cast iron brake disc and a preparation method and application of the cast iron brake disc. The high-speed laser cladding metal ceramic coating comprises the following preparation raw materials in percentage by mass: 40%-60% of stainless steel, 10%-20% of SiC, 10%-30% of ZrO2, 5%-10% of Ti and 1%-2% of CeO2. According to the coating, the hardness, the wear resistance, the friction coefficient and the toughness of a cast iron matrix can be remarkably improved, and the braking requirement of a motor vehicle under the extreme working condition can be well met. The invention further provides the cast iron brake disc and a preparation method and application thereof.
Owner:CHANGSHA KABANG SUPERHARD MATERIAL TECH CO LTD

Brake disc with nickel-free steel layer and method for making a brake disc

PendingUS20250102029A1Braking discsBraking members
Provided is a brake disc for a disc brake having a braking band made of gray cast iron or steel, provided with two opposite braking surfaces, each of which defines at least partially one of two main faces of the brake disc. The brake disc is provided with a base layer composed of a totally nickel-free steel that covers at least one of the two opposite braking surfaces of the braking band. The totally nickel-free steel of the base layer is composed of 10% to 15% chromium (Cr), at most 1% silicon (Si), at most 4% manganese (Mn), 0.16% to 0.5% carbon, and iron (Fe) as a balance.
Owner:FRENI BREMBO SPA

Novel brake and hub motor

The present application belongs to the technical field of mechanical braking and provides a novel brake and a hub motor. The novel brake comprises: a brake stator, an armature, a main coil, an elastic component, N friction discs, N movable plates and assembly parts, wherein the N movable plates and the N friction discs are alternately arranged, the N-th movable plate and the N-th friction disc are adjacently arranged, the N-th friction disc abuts against a limiting step, and N is an integer larger than or equal to 1. The peripheral size of the N friction discs is larger than the peripheral size of the N movable plates, the peripheries of the N friction discs all being provided with fitting parts, and the fitting parts being configured to fit a braking part. The N friction discs and the N movable plates are all sleeved on the periphery of the brake stator, so that the total thickness of the novel brake is greatly reduced. The friction discs no longer fit a brake axle by means of a central hole, but fit the braking part by means of the fitting parts arranged on the peripheries, so that the novel brake can be applied to a wider range of application scenarios, and the sizes of the brake stator and the armature can be designed more freely, thus reducing the overall size of the novel brake.
Owner:ALTRA IND MOTION SHENZHEN CO LTD

Brake module for a vehicle flap drive system, and vehicle flap drive system

The invention relates to a brake module (100) for a vehicle flap drive system with at least one first friction partner (130) and at least one second friction partner (160, 170), wherein the friction partners (130, 160, 170) each have at least one friction surface (140, 150, 180, 190) which rub against one another during braking operation, wherein the first friction partner (130) is formed in one piece from a plastic with a carbon fiber content.The invention further relates to a vehicle flap drive system comprising a brake module (100).
Owner:STABILUS GMBH