116 results about "Tribology" patented technology

The invention discloses a cylindrical roller trajectory tracking method and device, and the cylindrical roller trajectory tracking method comprises the following steps: obtaining an actual measurement displacement sequence of a key point on the end surface of a roller under a global coordinate system based on a multi-reference matching digital image correlation method; drawing a key point displacement curve about key points and time according to the actually measured displacement sequence; judging the motion state of a roller according to the shape characteristics of the key point displacement curve, dividing a smooth part in the key point displacement curve into a rolling area, and dividing a part with jumping or sharp points into a sliding area; calculating the actual revolution angular velocity and the actual rotation angular velocity of the roller based on the actually measured displacement sequence corresponding to the sliding area; according to the method and the device, the image matching precision can be improved, meanwhile, the rolling and sliding components of the roller are accurately distinguished, the precision of the track of the cylindrical roller is improved, and high-precision and visual experimental data are provided for existing dynamics and tribology models.

The invention relates to a preparation process optimization method of a zirconium alloy material with high fretting wear resistance, which comprises the following steps: setting a chemical component optimization range of a zirconium alloy, including specific proportions of tin, iron, niobium, chromium and oxygen elements; establishing a computer simulation model, and predicting the wear volume, tribological stability and microstructure evolution of the material under the fretting wear condition; then, a complete optimization scheme is output based on the model optimization homogenization treatment temperature interval, the hot working deformation range, the cold working cumulative deformation degree and the annealing system; and finally, a preparation process sequence including smelting, homogenization treatment, hot working deformation, cold working deformation and final heat treatment is implemented, the zirconium alloy material with the equiaxed grain structure is prepared, and the wear resistance of the zirconium alloy material is verified through an experimental fretting wear performance test. Compared with the prior art, the method has the advantages that through systematic component design and process parameter simulation optimization, the material performance is remarkably improved, and the application reliability is enhanced.

The invention discloses a non-contact ice friction coefficient measuring method and device, and relates to the tribology testing technology, and the method comprises the following steps: obtaining a motion image of a slide block on an artificial ice rink by using a camera system; performing preprocessing and target detection on the acquired image to obtain coordinate information of the sliding block in a world coordinate system; and based on the coordinate data of the sliding block, fitting and solving the acceleration of the sliding block by adopting primary function expansion in combination with a Tikhonov regularization method, and carrying out inversion in combination with a friction mechanical model and a kinematic model to obtain an ice friction coefficient. Compared with a traditional contact type method, the in-situ high-precision measurement of the ice friction coefficient can be realized under the condition of no sensor attachment or external force interference, the defects of low measurement precision and strong invasiveness in the prior art are effectively overcome, and the method can be applied to the fields of winter road safety detection and ice and snow sports.

The invention discloses a wear-resistant diamond-like carbon composite film on the surface of a rubber material and a preparation method and application of the wear-resistant diamond-like carbon composite film. The abrasion-resistant diamond-like carbon composite film sequentially comprises a Ti transition layer and a DLC functional layer. Wherein the Ti transition layer is sputtered and deposited on the surface of a rubber material through a direct-current magnetic control power supply, so that the bonding strength of the film can be greatly improved; the DLC functional layer is deposited on the Ti transition layer, and the structure of the DLC functional layer can be flexibly regulated and controlled by adjusting on and off of a Ti target power supply, so that the tribological performance and the environmental adaptability of the composite film are optimized. The abrasion-resistant diamond-like composite film has the advantages of being high in bonding strength, low in friction coefficient, high in environmental adaptability and the like, can be used for surface strengthening and service life prolonging of rubber sealing materials in the marine environment, and is suitable for large-scale industrial production.

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

The invention discloses a preparation method of an organic-inorganic composite microcapsule as well as an obtained product and application of the organic-inorganic composite microcapsule. The preparation method comprises the following steps: firstly, preparing a MoS2-metal composite material by adopting pulse laser irradiation, mixing the MoS2-metal composite material, PAO5 oil, polysulfone and an organic solvent to obtain an organic phase, and dissolving lauryl sodium sulfate and polyvinyl alcohol in water to obtain a water phase; and mixing the organic phase and the water phase, and obtaining the microcapsule by adopting a solvent evaporation method. The method disclosed by the invention is simple to operate and low in cost, and the obtained microcapsule can automatically store a lubricant and has excellent tribological performance in the friction process.

The invention relates to the field of graphene composite materials, in particular to a high-thermal-conductivity graphene composite material for a self-lubricating coating, which is prepared from the following components in percentage by mass: 45 to 55 percent of matrix material, 10 to 15 percent of graphene, 20 to 25 percent of metal sulfide, 10 to 13 percent of high-thermal-conductivity filler, 3 to 5 percent of dispersing agent and 1 to 2 percent of interface modifier, in addition, the invention further discloses a preparation method of the high-thermal-conductivity graphene composite material for the self-lubricating coating, and the preparation method comprises the steps of raw material pretreatment, premixing, multi-stage jet mill compounding, post-treatment and the like. Stable and uniform dispersion of fluorinated graphene in a system is successfully realized, the problem of stress concentration caused by agglomeration is thoroughly avoided, and the mechanical integrity of the composite material and the consistency of tribological properties are remarkably improved.

One aspect of the invention relates to a test specimen (100) for characterizing vibration damping in adhesive or sliding contact between two components subjected to vibration, low-cycle, and tribological stress, wherein the specimen is provided with male and female fasteners (130) comprising a protrusion (131) extending from a free end of a first longitudinal rod and a recess (132) recessed at a free end of a second longitudinal rod. A second aspect of the invention relates to an apparatus (300) for characterizing vibration damping in adhesive or sliding contact between two components subjected to vibration, low-cycle, and tribological stress, wherein the apparatus is provided with a test bench (300) on which the test specimen (100) is mounted, and wherein the apparatus includes a vibrator (310) for transmitting vibrational excitation to the test specimen (100) and a static loading device (320) for transmitting low-cycle stress to the test specimen. A third aspect of the invention relates to a method (400) for implementing the characterization apparatus (300).

The application belongs to the field of copper alloy friction, and particularly relates to a heterogeneous layered copper-copper zinc alloy with friction anisotropy and a preparation method thereof. The method comprises the following steps: step (1), mechanical polishing of copper plates and copper zinc alloy plates; step (2), organic oil removal; step (3), alternately stacking the copper and the copper zinc alloy, and diffusion welding to form a copper-copper zinc material blank; step (4), cold rolling of the blank at room temperature with a total deformation of 88% to 98%; and step (5), annealing of the rolled blank in an argon stream at 300 DEG C to 350 DEG C for 3 to 4 hours to obtain the copper-copper zinc alloy. The copper / copper zinc alloy with different layer spacings obtained by the application can be used to study the relationship between the layer spacing and the friction anisotropy by adjusting the layer spacing, thereby providing a criterion for designing a heterogeneous layered alloy with excellent tribological properties.

The invention belongs to the technical field of brake friction materials and powder metallurgy, and discloses a preparation and regulation method for a three-dimensional latticed structure in a copper-based brake friction material. The copper-based brake friction material is mainly composed of copper-coated iron powder, molybdenum disulfide, crystalline flake graphite, silicon dioxide, superfine copper powder and other functional components. Wherein the three-dimensional latticed structure is constructed by superfine copper powder, and the comprehensive performance of the copper-based brake friction material is improved through multiple excellent performances such as high heat conduction performance and mechanical strength of the three-dimensional latticed structure; according to the invention, structural design and preparation are carried out on raw material powder by adopting a method of prefabricated particle preparation and particle bonding and coating, so that all functional components are uniformly distributed on the friction material, a three-dimensional latticed structure can be constructed, and the mechanical property and tribological property of the friction material are greatly improved; the copper-based brake friction material is high in mechanical performance, stable in friction coefficient, high in heat conduction performance, low in wear rate and excellent in performance under extreme working conditions.

A new type of oil cavity recess type static and dynamic pressure thrust bearing, with the development of high speed heavy load cutting technology, heavy equipment gradually to high speed heavy load development, we are more and more high performance requirements of static pressure thrust bearing, but with the increase of speed and load, the lubricating oil film because of the action of shear force and extrusion force, shear heat increases, oil film thin, even in local tribology failure phenomenon, and bearing because of local overheating deformation, resulting in lubricating oil leakage, and lubricating oil viscosity decreases, will produce static pressure loss, therefore, the patent puts forward a new type of oil cavity recess type static and dynamic pressure thrust bearing, so that the static pressure thrust bearing work, oil cavity and rotary workbench guide surface between the total wedge gap, under the condition of rotary workbench high speed rotation, meet the conditions of dynamic pressure effect, use dynamic pressure effect, through the dynamic pressure to make up for the lack of static pressure bearing capacity, in order to achieve the purpose of improving the bearing capacity and stability.

The invention relates to the technical field of material surface engineering and extreme working condition tribology, in particular to a wide-temperature-range composite lubricating component based on multi-scale design and interface self-adaption and a preparation method of the wide-temperature-range composite lubricating component based on multi-scale design and interface self-adaption. The composite lubricating structure comprises, from inside to outside, a metal bonding layer; the composition of the diffusion barrier layer is continuously and gradually changed from the alloy composition matched with the metal bonding layer to the ceramic composition; the self-lubricating functional layer comprises a ceramic metal composite matrix and a plurality of lubricant capsules dispersed in the ceramic metal composite matrix; the lubricant capsule comprises a ceramic shell layer and at least two lubricating phases with different temperature activation characteristics wrapped by the ceramic shell layer. According to the invention, continuous and effective lubrication in a wide temperature range is realized, the friction coefficient can be stabilized below 0.3, and the problems of reduction of the binding force between a coating and a matrix and early failure are solved.

The application provides a low-friction high-wear-resistance resin-based composite material and a preparation method and application thereof, and belongs to the field of composite materials. The polytetrafluoroethylene nano powder modified by radiation is used together with inorganic filler particles such as graphite nano powder, molybdenum disulfide nano powder and the like to prepare a polyphenylene sulfide-based composite material at a certain compounding ratio. The composite material shows excellent tribological properties. On this basis, by adding a chopped carbon fiber and the like as a reinforcing filler, a high-strength, low-friction high-wear-resistance polyphenylene sulfide-based composite material is prepared by using a multi-scale functional filler network structure constructed inside the composite material. The technical process route of the application is simple, and the manufacturing cost is low. The application can be used for preparing friction protection parts, low-friction wear-resistant structures, wear-resistant bearings, self-lubricating parts, mechanical gaskets and the like under dry friction, and has a very broad application prospect in the fields of aerospace, transportation, electronic devices and high-end mechanical equipment.

The application integrates a passive wireless temperature control sensing unit and a pulse eddy current nondestructive testing module, synchronously collects temperature, frequency offset and lattice strain data of a low-temperature bearing ring under rotating working conditions, constructs a thermal-force coupling correlation model through a low-temperature tribology-thermal conduction coupling analysis module, and outputs a friction heat generation rate prediction value. Relying on a federal learning edge inference module, distributed model training is completed, combined with homomorphic encryption to guarantee data security, and the data island restriction is broken through. Based on an optimization strategy, the edge controller dynamically adjusts the sensing sampling interval through reinforcement learning, solves a multi-objective optimization problem by using a non-dominated sorting genetic algorithm, and drives the hierarchical start and stop of the self-cooling system. The application eliminates the physical interference of wired sensing, realizes adaptive temperature control and energy-saving cooling of the bearing ring under low-temperature working conditions, and improves the temperature control precision and system generalization ability.

The invention belongs to the technical field of metal surface strengthening, and particularly relates to a preparation method of an oil-storage wear-resistant ceramic film layer on a titanium alloy surface. The laser remelting technology and the inherent micropore oil storage function of the micro-arc oxidation ceramic film layer are combined, structural densification reconstruction and lubrication modification are conducted on the micro-arc oxidation ceramic film layer, the hardness of the film layer can be effectively improved, the shear stress in the friction process is reduced, and then the abrasion resistance of the film layer can be greatly improved. The oil-storage wear-resistant ceramic film layer on the surface of the titanium alloy prepared by the preparation method disclosed by the invention has relatively small friction coefficient and wear rate, and the tribological performance of the titanium alloy is effectively improved; laser remelting can perform structural densification reconstruction on the micro-arc oxidation ceramic membrane layer, so that the membrane layer has compactness and controllable distribution of a porous structure; and the method is wide in application range and suitable for titanium alloy parts of various models.

The application relates to the technical field of power engineering cable installation, and discloses an optical and electrical combined cable integrated laying and protection system for complex working conditions, which comprises: a rigid base configured to be anchored at a turning node; and a self-adaptive bearing assembly rotatably installed on the rigid base; the bearing assembly comprises elastic split units arranged in an axial direction; each unit is converted from an open state to a holding state of wrapping the side wall of the cable under radial pressure; and the inner surface of the unit is provided with a partitioned friction structure, which comprises a bottom high-friction rolling driving surface and two side wing low-friction sliding decoupling surfaces; through the cooperation of the tribological anisotropic structure and the self-adaptive geometric deformation, the tangential shear wear in the deep envelope state is eliminated, and the physical damage problem of the cable sheath and the optical unit in high-tension laying is solved.

The invention belongs to the technical field of metallurgical materials, and relates to a preparation method of a Ti3SiC2 / BN / B4C reinforced copper-based brake pad material. According to the high-iron copper-based brake material prepared by taking nickel-chromium alloy, Sn and Si powder as raw materials, taking hBN and Ti3SiC2 as lubricants, taking cBN and B4C as hard phases and supplementing a small amount of nickel-chromium alloy, Sn and Si powder, the high-iron copper-based brake material has excellent tribological performance, mechanical reliability and service stability. In the aspect of a lubricating system, hBN is used as a high-temperature lubricant, so that the friction coefficient and abrasion are effectively reduced; ti3SiC2 serves as ternary layered ceramic and has the electric conduction and heat conduction performance of metal and the high temperature resistance performance of ceramic, a small amount of nickel-chromium alloy, Sn and Si powder are supplemented, and the problem that brake vibration and howling are likely to be generated due to excessive SiC and TiC hard phases of a carbon-ceramic brake interface is solved. The brake pad has the characteristics of high-temperature friction stability, low wear rate and environmental friendliness, and provides a high-reliability solution for a high-speed rail braking system.

The invention belongs to the technical field of ceramic materials, and particularly relates to a wide-temperature-range MAX-phase ceramic material and a preparation method thereof. The chemical general formula of the ceramic material is (Ti1-x-yMnxMoy) 3AlC2, the value range of x is greater than or equal to 0.15 and less than or equal to 0.25, the value range of y is greater than or equal to 0.05 and less than or equal to 0.15, and the sum of x and y is 0.3. The preparation method comprises the following steps: weighing titanium powder, manganese powder, molybdenum powder, aluminum powder and graphite powder according to a stoichiometric ratio, and additionally adding 1-3at.% of excessive aluminum powder; and carrying out ball-milling mixing, drying and sieving, and sintering by adopting a two-stage hot pressing sintering process to prepare the MAX phase ceramic material. Through Mo and Mn element solution strengthening, excessive Al adding and two-stage gradient heating sintering processes, the structural stability, the mechanical property and the tribological property of the material in the wide temperature range from the room temperature to 1600 DEG C are remarkably improved.

The invention discloses a high-wear-resistance Mg-Zn-Mg2Sn composite material and a preparation method thereof, and belongs to the technical field of metal-based composite materials. The preparation method comprises the following steps: firstly, uniformly premixing Mg, Sn and Zn powder to obtain mixed powder; secondly, carrying out high-energy ball milling treatment under a vacuum condition, and carrying out cold pressing on the ball-milled powder to form a prefabricated blank block; thirdly, isothermal treatment is carried out on the prefabricated blank block under the vacuum condition, hot pressed sintering is carried out under the same vacuum condition, and a compact sintering state material is obtained; and finally, carrying out T6 heat treatment on the sintered and molded billet. Mg is used as a matrix, and nanoscale Mg2Sn and MgZn2 intermetallic compound reinforced phases are generated in situ in the matrix by regulating and controlling the content of Sn and Zn elements and reaction parameters. The obtained composite material is high in density, has excellent interface bonding performance and high wear resistance, can keep good tribological stability in high-temperature, high-load and other complex service environments, is suitable for the fields of precise transmission parts, high-temperature wear-resistant components and the like, and has good application prospects and industrialization potential.

The present invention relates to the technical field of the development of a novel CraCubMncNid High Entropy based Alloy (HEA) system and process for preparation thereof. More particularly, the present invention relates to CraCubMncNid high entropy alloy-based system, wherein the concentration of a in the ranges of 5-17 atomic percent (at %), b in the range of 18-35 atomic percent (at %), c in the range of 17-34 atomic percent (at %), and d in the range of 23-37 atomic percent (at %). The unique combination of these elements unlocks a new level of performance and reliability, marking a significant advancement in the field of high entropy alloys. Cr—Cu—Mn—Ni-based High Entropy Alloys (HEAs) exhibiting cost effective, superior strength, hardness, tribological performance, and corrosion resistance at room temperature. Cr—Cu—Mn—Ni-based High Entropy Alloys (HEAs) alloy system a robust alternative to traditional nickel-based and nickel-iron-based superalloys in a wide range of applications.

The invention belongs to the technical field of solid lubrication of materials and space precision motion parts, and provides an annealing treatment method of a solid lubrication film. The method comprises the following steps: heating a solid lubricating film from room temperature to a first temperature at a first heating rate for first heat preservation, wherein the first temperature is 100-250 DEG C; second heating is conducted from the first temperature to a second temperature at a second heating rate, and second heat preservation is conducted, wherein the second temperature ranges from 250 DEG C to 500 DEG C; first cooling is conducted from the second temperature to a third temperature at the first cooling rate, and third heat preservation is conducted, wherein the third temperature ranges from 100 DEG C to 300 DEG C; and second cooling from the third temperature to the room temperature at a second cooling rate. According to the annealing treatment method provided by the invention, the tribological performance of the solid lubricating film is effectively improved.

A brake pad for a disc braking system comprising a caliper and a disc comprises a tribologically active friction member (2), a support (3) of the friction member (2) coupled to the friction member (2) and intended, in use, for assembling the brake pad in the caliper, an anchoring system for anchoring the friction member (2) to the support (3); the anchoring system comprises a net (5), associated with the support, and a plurality of nails (7a, 7b), welded to the support (3), that are incorporated into the friction member (2).

The invention relates to the technical field of composite materials, in particular to a high-wear-resistance reinforced polyaryletherketone composite material and a preparation method thereof.The high-wear-resistance reinforced polyaryletherketone composite material is prepared from, by mass, 10%-40% of fiber materials, 10%-30% of inorganic solid lubricants and the balance polyaryletherketone; wherein the inorganic solid lubricant comprises a VIA group metal compound; the VIA group metal compound is selected from metal sulfide and / or metal selenide, and the particle size of the VIA group metal compound is required to be 0.8-6 microns and less than or equal to 200 nanometers; the PAEK composite material is synergistically enhanced by regulating and controlling the micro-nano size ratio of the VIA group metal compound and combining with the carbon material, and meanwhile, the tribological performance is improved.

This invention relates to a wide-temperature-range wear-resistant adaptive lubrication dual-phase high-entropy ceramic material and its preparation method. The chemical composition of the dual-phase high-entropy ceramic material is (Hf... 0.2 Mo x Ti y Nb z Ta 0.2 )C-pwt%(Hf 0.2 Mo x Ti y Nb z Ta 0.2 B2, x+y+z=0.6, 0.15≤x≤0.25, 0.20≤y≤0.30, 0.15≤z≤0.20, 20≤p≤75; and the material has a hardness of 20.0~23.5 GPa at room temperature, exhibits excellent tribological properties over a wide temperature range from room temperature to 1100 ℃, and has a wear rate of 10. ‑5 -10 ‑7 mm 3 The friction coefficient is on the order of Nm, and is as low as 0.18. This invention also discloses a method for preparing this dual-phase high-entropy ceramic. Based on entropy regulation combined with dual-phase design, this invention, by controlling the material composition, microstructure, and preparation process, induces the exchange of metal elements and solid solution reactions during high-temperature preparation, resulting in a high-performance carbide-boride dual-phase high-entropy bulk ceramic material. This dual-phase high-entropy ceramic material possesses excellent mechanical properties and wide-temperature-range wear resistance and adaptive lubrication performance, making it suitable for applications under extreme and harsh conditions such as high temperatures.

The invention discloses a water turbine thrust bearing tribological behavior and heat transfer performance comprehensive test bench and a test method, the water turbine thrust bearing tribological behavior and heat transfer performance comprehensive test bench comprises a test bench, the test bench is provided with a driving unit and a thrust unit, the driving unit is provided with a runner plate, the thrust unit is provided with a thrust bearing unit, and the thrust bearing unit is provided with a thrust pad unit. The thrust pad unit and the runner plate are oppositely arranged; the test bench is also provided with an oil tank, and the thrust pad unit and the runner plate are located in the oil tank. The acquisition and control unit comprises a computer, and a torque sensor, a temperature sensor, an oil pressure sensor, an eddy current sensor and a pressure sensor which are electrically connected with the computer. According to the method, the real working condition of the thrust bearing of the water turbine can be reproduced, the coupling test and comprehensive analysis of the tribological characteristics and the thermal performance of the thrust bearing are realized, and accurate and reliable experimental data and theoretical basis are provided for design optimization, state evaluation and fault diagnosis of the thrust bearing.

This invention discloses a Cu-doped nitride composite coating and its preparation method, belonging to the field of current-carrying friction coating technology. The technical problem to be solved by this invention is how to improve the resistance of the substrate material to current-carrying friction, so that it can withstand the tribological material of the power system discharge effect to reduce the negative impact of stray current, thereby improving the bearing life and thus improving the stability and energy efficiency of electric vehicles. The technical solution adopted is as follows: the composite coating includes a substrate layer, a single Nb transition layer is disposed on the upper surface of the substrate layer, and an NbN-Cu coating is disposed on the upper surface of the single Nb transition layer. The atomic percentage of Cu element in the NbN-Cu coating is 6.88%≤Cu≤25.30%.

The present disclosure relates to a friction material composition comprising reactive poly aryl ether ketone (R-PAEK) as a binder. The present disclosure further relates to a process for the preparation of a friction material composition. Furthermore, the present disclosure relates to a process for the fabrication of an article by using the friction material composition. The friction material composition of the present disclosure does not require post curing while manufacturing brake pads. Further, the article fabricated by using the friction material composition of the present disclosure has longer shelf life and do not evolve noxious by-products and possesses superior physical and tribological properties.

The present invention relates to a compact and optimised solution for controlling a tribological pair intended to provide vehicle braking, so that so that the tribological pair is moved together or apart by means of threaded components associated with a compact mechanical arrangement, which allow precise control of braking and spacing between the elements of the tribological pair, such as brake pads and brake discs, also allowing the use of this braking for the parking brake, thereby eliminating the need for additional parts. The present invention pertains to the fields of tribology and mechanical, electrical and electronic engineering, and to the automotive sector.

A piston ring may include a split annular body having a plurality of exterior surfaces, an intermediate coating disposed on and directly contacting at least one exterior surface of the split annular body, and a tribological coating. The tribological coating may include a first layer disposed on and directly contacting the intermediate coating, and a second layer disposed on and directly contacting the first layer. The first layer may have a first hardness and a first porosity. The second layer may have a second hardness and a second porosity. The second hardness may be less than the first hardness. The second porosity may be greater than the first porosity.

The invention discloses an alloy / bamboo chip multi-layer composite material and a preparation process, the structure of the multi-layer composite material is formed by alternately arranging alloy sheets / bamboo chip sheets, and a binder is arranged between every two adjacent sheets; the outer surface of the end part of the multi-layer composite material is used as a friction surface, and the surface of the thin plate is perpendicular to the growth axial direction of the bamboo chip, so that the axial vascular bundle in the bamboo chip is perpendicular to the friction surface at the upper end; and according to the thickness dimension, the ratio of the alloy thin plate to the bamboo sheet thin plate is 1: 9-2: 1. The multi-layer composite material is obtained in a sheet layer stacking and bonding mode, the outer surfaces of the ends of the multi-layer composite material serve as friction surfaces, and the groove texture and bamboo fiber oil storage design is introduced into the outer surfaces of the ends of the multi-layer composite material, so that the tribological performance of the multi-layer composite material is remarkably improved, and the friction performance of the multi-layer composite material is improved. Therefore, a novel material capable of being used for a humanoid robot friction part is obtained, and light weight, high strength, excellent tribological performance and environmental friendliness are achieved.