CN110172692B - Method for compositely strengthening self-repairing of surface of cutter head of shield machine - Google Patents
Method for compositely strengthening self-repairing of surface of cutter head of shield machine Download PDFInfo
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- CN110172692B CN110172692B CN201910330984.2A CN201910330984A CN110172692B CN 110172692 B CN110172692 B CN 110172692B CN 201910330984 A CN201910330984 A CN 201910330984A CN 110172692 B CN110172692 B CN 110172692B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
Abstract
The invention provides a method for compound strengthening and self-repairing of the surface of a cutter head of a shield machine.
Description
Technical Field
The invention relates to the field of cutter repair, in particular to a method for compositely strengthening self-repairing of the surface of a cutter head of a shield machine.
Background
The shield machine is an advanced material manufacturing key technology integrating multiple subjects such as materials, machinery, transmission and the like, marks a national comprehensive advanced manufacturing level, has higher equipment value and higher construction cost, has complex working environment and serious abrasion in the use process of a shield machine cutter head, is generally scrapped and processed when the service life of the shield machine is not enough to continue to a next project after the shield machine finishes one project, but can make the performance of a remanufactured product reach or even exceed that of a new product by a professional repairing or upgrading method through technologies such as a composite surface engineering technology, a nano surface engineering technology and the like under the main melody of constructing a saving society, an environment-friendly society and developing circular economy at present, and has more excellent effects on saving resources and energy and protecting the environment.
The microcapsule self-repairing method is the most applied method in the field of self-repairing coatings at present, microcapsules containing a repairing agent are embedded in a polymer matrix or a coating in advance, when the matrix or the coating material is damaged, the capsules break and release the repairing agent, and when the repairing agent meets a catalyst in the matrix or the coating, a crosslinking curing reaction occurs to repair a crack surface, so that the self-repairing of the damaged part is realized.
The graphene coating has excellent high heat conduction, high temperature resistance and wear resistance, the graphene nanoplatelets can enhance the adhesive force of the coating, so that the graphene coating has excellent wear resistance and scratch resistance, and simultaneously has good heat resistance and heat conductivity, heat generated in the friction process can be quickly dispersed, and chemical degradation caused by local overheating of the surface of the coating is prevented; by adopting a nano particle reinforced composite material technology, the outstanding characteristics of high strength, high modulus, high strength and low friction coefficient of the novel two-dimensional nano material graphene are fully utilized, and the friction and wear properties of the graphene composite material are improved; TiC has very high melting point and hardness, and has good heat transfer performance and electrical conductivity; the carbon nano tube is a material with the highest specific strength which can be prepared at present, other engineering materials are used as a matrix to be made into a composite material together with the carbon nano tube, so that the composite material can show good strength, elasticity, fatigue resistance and isotropy, and the performance of the composite material is greatly improved.
The composite mineral fiber (FKF fiber) is a group of novel reinforcing materials for friction and sealing materials, which comprises various mineral fibers, is supplemented with a small amount of organic fibers and other reinforcing components according to different purposes, has the reinforcing effect which can meet the basic requirements of disc brake pads and drum brake pads, can meet the reinforcing requirements of most rubber and sealing plates, can meet the requirements of the brake pads on friction performance, has heat resistance superior to asbestos and has high cost performance; the glass fiber belongs to inorganic silicate fiber and has the advantages of high strength, corrosion resistance, good thermal stability (capable of stably working below 550 ℃ for a long time), and the like; the glass fiber material has better adhesive property and excellent frictional wear performance after the modified resin, the rubber powder and the like are added.
Disclosure of Invention
The invention aims to provide a method for compounding, strengthening and self-repairing the surface of a cutter head of a shield machine, which solves the problems of complex working environment and serious abrasion of the cutter head of the shield machine in the using process.
The technical scheme of the invention is as follows: a method for compounding, strengthening and self-repairing the surface of a cutter head of a shield machine; the coating obtained by the method can overcome the problems of complex working environment and serious abrasion and frequent repair of the cutter head of the shield machine in the using process; the specific implementation method comprises the following steps:
(1) surface cleaning: removing rust and oil stains on the surface of the cutter head;
(2) repairing surface cracks: uniformly mixing 10-30 parts of nanoscale graphene, 10-30 parts of TiC10, 10-30 parts of carbon nano tube, 10-30 parts of molybdenum dioxide and 10-30 parts of Q235 powder through ultrasonic vibration, spraying the mixture to a cutter abrasion part through a powder feeding nozzle, filling protective gas, heating to 3200-3500 ℃, controlling the laser power to be 1500-2000W, controlling the spot diameter to be 100-150 um and controlling the laser heat treatment time to be 1-1.5 s, and performing laser cladding on the cutter abrasion part for one or more times under the laser irradiation to form a laser cladding graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 micro-sheet layer on the surface of the cutter abrasion part; after cooling the cutter to room temperature, carrying out stress relief annealing by induction heating to 620-640 ℃, keeping the temperature for 2-3 h, and then air cooling to room temperature;
(3) modification of phenolic resin: mixing nano-scale SiO210 to 30 parts of TiO210 to 30 parts of Al2O3Adding 10-30 parts of ZnO powder and 10-30 parts of phenolic resin, and uniformly mixing by ultrasonic vibration to prepare nano modified phenolic resin;
(4) preparing an outer coating: uniformly mixing 20-30 parts of nano modified phenolic resin, 20-30 parts of FKF fibers, 3-6 parts of glass fibers, 3-6 parts of carbon fibers, 3-6 parts of barite, 3-6 parts of ferrochromium mineral powder, 3-6 parts of fluorite powder, 3-6 parts of alpha-alumina, 30-40 parts of KH-550 coupling agent and 30-40 parts of polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsules through ultrasonic vibration to obtain the FKF composite fiber friction enhanced self-repairing outer layer coating material;
(5) outer layer coating adhesion: spraying the prepared FKF composite fiber friction-enhanced self-repairing outer layer coating material on a repaired laser cladding graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 micro-sheet layer through a spraying machine, then pressing through a pressing machine, wherein the pressing temperature is 160-170 ℃, the pressing pressure is 14-17 MPa, the heat and pressure are maintained for 70-80 s/mm, the temperature is slowly increased to 200-220 ℃, and then the temperature is maintained for 8-10 hours;
(6) grinding: and finally, carrying out grinding processing on the outer coating attached to the cutter head according to the size of the cutter head, and finally obtaining the composite reinforced self-repairing material for the surface of the cutter head of the shield machine after the inspection is qualified.
The invention has the beneficial effects that:
the invention provides a method for compounding, strengthening and self-repairing the surface of a cutter head of a shield machine, which solves the problems of complex working environment, serious abrasion and frequent repair of the cutter head of the shield machine in the using process, and when the service life of the cutter head of the shield machine is not enough to continue to the next project after the shield machine finishes one project, the performance of a remanufactured product can reach or even exceed that of a new product by a method of specialized repair or upgrading modification through technologies such as a compound surface engineering technology, a nano surface engineering technology and the like, thereby avoiding scrapping treatment, and having obvious effects of saving resources and energy and protecting the environment.
The microcapsule added to the production raw materials is to embed the microcapsule containing the repairing agent into a polymer matrix or a coating in advance, when the matrix or the coating material is damaged to generate micro cracks, the stress concentration at the tips of the cracks can lead the capsules to break and release the repairing agent, and when the repairing agent meets a catalyst in the matrix or the coating, a cross-linking curing reaction is generated to repair the crack surfaces, so that the self-repair of the damaged parts is realized.
The graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 powder coating added to the production raw materials has excellent high heat conduction, high temperature resistance and wear resistance, can enhance the adhesive force of the coating, has good heat resistance and heat conductivity, can quickly disperse heat generated in the friction process, and prevents the chemical degradation caused by local overheating of the surface of the coating; by adopting a nano particle reinforced composite material technology, the outstanding characteristics of high strength, high modulus, high strength and low friction coefficient of the novel two-dimensional nano material graphene are fully utilized, and the friction strength, hardness, fatigue resistance and wear resistance of the graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 coating are improved;
the nano-material modified phenolic resin added in the raw materials for production is prepared by adding nano-SiO into the traditional phenolic resin2、TiO2、Al2O3ZnO, composite mineral fiber, glass fiber and carbon fiber are used as reinforcements, barite, chromite powder, fluorite, calcium carbonate and alpha-alumina material are used as friction fillers, KH-550 coupling agent is used as affinity agent, and the nano modified phenolic resin can organically bond all components of the friction material together, endow the material with certain structural strength, greatly influence the friction and wear performance of the material, particularly the high-temperature friction and wear function, and have good pressure resistance.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments
Example 1:
a method for compositely strengthening and self-repairing the surface of a cutter head of a shield machine comprises the following steps:
(1) surface cleaning: removing rust and oil stains on the surface of the cutter head;
(2) repairing surface cracks: uniformly mixing 10 parts of nanoscale graphene, 10 parts of TiC10 parts of carbon nano tube, 10 parts of molybdenum dioxide and 10 parts of Q235 powder through ultrasonic vibration, filling protective gas into a cutter head abrasion part through a powder feeding nozzle, heating to 3200 ℃, wherein the laser power is 1500W, the spot diameter is 100um, the laser heat treatment time is 1s, and carrying out one-time or multiple-time laser cladding on the cutter head abrasion part under the irradiation of laser to form a laser cladding graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 micro-sheet layer on the surface of the cutter head abrasion part; cooling the cutter to room temperature, then carrying out stress relief annealing by induction heating to 620 ℃, preserving heat for 2h, and then air cooling to room temperature;
(3) modification of phenolic resin: mixing nano-scale SiO210 parts of TiO210 parts of Al2O3Adding 10 parts of ZnO powder and 10 parts of ZnO powder into phenolic resin, and uniformly mixing by ultrasonic vibration to prepare nano modified phenolic resin;
(4) preparing an outer coating: uniformly mixing 20 parts of nano modified phenolic resin, 20 parts of FKF fibers, 3 parts of glass fibers, 3 parts of carbon fibers, 3 parts of barite, 3 parts of chromite powder, 3 parts of fluorite powder, 3 parts of alpha-alumina, 30 parts of KH-550 coupling agent and 30 parts of polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsules together through ultrasonic vibration to obtain an FKF composite fiber friction-enhanced outer self-repairing coating material;
(5) outer layer coating adhesion: spraying the prepared FKF composite fiber friction-enhanced self-repairing outer layer coating material on the repaired laser cladding graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 micro-sheet layer through a spraying machine, then pressing through a pressing machine, wherein the pressing temperature is 160 ℃, the pressing pressure is 14MPa, the heat preservation and pressure maintenance is carried out for 70s/mm, the temperature is slowly increased to 200 ℃, and then the temperature is maintained for 8 hours;
(6) grinding: and finally, carrying out grinding processing on the outer coating attached to the cutter head according to the size of the cutter head, and finally obtaining the composite reinforced self-repairing material for the surface of the cutter head of the shield machine after the inspection is qualified.
Example 2:
(1) surface cleaning: removing rust and oil stains on the surface of the cutter head;
(2) repairing surface cracks: 20 parts of nanoscale graphene, 20 parts of TiC20 parts, 20 parts of carbon nano tube, 20 parts of molybdenum dioxide and 20 parts of Q235 powder are uniformly mixed through ultrasonic vibration and then sprayed to a cutter head abrasion part through a powder feeding nozzle, protective gas is filled in and the temperature is raised to 3300 ℃, the laser power is 1700W, the diameter of a light spot is 130um, the laser heat treatment time is 1.2s, and under the irradiation of laser, one-time or multiple-time laser cladding is carried out on the cutter head abrasion part, so that a laser cladding graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 micro-sheet layer is formed on the surface of the cutter head abrasion part; cooling the cutter to room temperature, then carrying out stress relief annealing by induction heating to 620-640 ℃, keeping the temperature for 2.5h, and then air-cooling to room temperature;
(3) modification of phenolic resin: mixing nano-scale SiO220 parts of TiO220 parts of Al2O3Adding 20 parts of ZnO powder and 20 parts of ZnO powder into phenolic resin, and uniformly mixing by ultrasonic vibration to prepare nano modified phenolic resin;
(4) preparing an outer coating: uniformly mixing 25 parts of nano modified phenolic resin, 25 parts of FKF fibers, 4 parts of glass fibers, 4 parts of carbon fibers, 4 parts of barite, 4 parts of chromite powder, 4 parts of fluorite powder, 4 parts of alpha-alumina, 35 parts of KH-550 coupling agent and 35 parts of polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsules together through ultrasonic vibration to obtain an FKF composite fiber friction-enhanced outer self-repairing coating material;
(5) outer layer coating adhesion: spraying the prepared FKF composite fiber friction-enhanced self-repairing outer layer coating material on the repaired laser cladding graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 micro-sheet layer through a spraying machine, then pressing through a pressing machine, wherein the pressing temperature is 165 ℃, the pressing pressure is 15MPa, the heat preservation and pressure maintenance is 75s/mm, the temperature is slowly increased to 210 ℃, and then the temperature is maintained for 9 hours;
(6) grinding: and finally, carrying out grinding processing on the outer coating attached to the cutter head according to the size of the cutter head, and finally obtaining the composite reinforced self-repairing material for the surface of the cutter head of the shield machine after the inspection is qualified.
Example 3:
(1) surface cleaning: removing rust and oil stains on the surface of the cutter head;
(2) repairing surface cracks: uniformly mixing 30 parts of nanoscale graphene, 30 parts of TiC30 parts of carbon nano tube, 30 parts of molybdenum dioxide and 30 parts of Q235 powder through ultrasonic vibration, spraying the mixture to a cutter abrasion part through a powder feeding nozzle, filling protective gas, heating to 3500 ℃, controlling the laser power to 2000W, the diameter of a light spot to be 150um and the laser heat treatment time to be 1.5s, and carrying out one-time or multiple-time laser cladding on the cutter abrasion part under the irradiation of laser to form a laser cladding graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 micro-sheet layer on the surface of the cutter abrasion part; cooling the cutter to room temperature, then carrying out stress relief annealing by induction heating to 620-640 ℃, keeping the temperature for 3h, and then air-cooling to room temperature;
(3) modification of phenolic resin: mixing nano-scale SiO230 parts of TiO230 parts of Al2O3Adding 30 parts of ZnO powder and 30 parts of ZnO powder into phenolic resin, and uniformly mixing by ultrasonic vibration to prepare nano modified phenolic resin;
(4) preparing an outer coating: uniformly mixing 30 parts of nano modified phenolic resin, 30 parts of FKF fibers, 6 parts of glass fibers, 6 parts of carbon fibers, 6 parts of barite, 6 parts of ferrochromium ore powder, 6 parts of fluorite powder, 6 parts of alpha-alumina, 40 parts of KH-550 coupling agent and 40 parts of polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsules together through ultrasonic vibration to obtain an FKF composite fiber friction-enhanced outer self-repairing coating material;
(5) outer layer coating adhesion: spraying the prepared FKF composite fiber friction-enhanced self-repairing outer layer coating material on the repaired laser cladding graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 micro-sheet layer through a spraying machine, then pressing through a pressing machine, wherein the pressing temperature is 170 ℃, the pressing pressure is 17MPa, the heat preservation and pressure maintenance is 80s/mm, the temperature is slowly increased to 220 ℃, and then the temperature is maintained for 10 hours;
(6) grinding: and finally, carrying out grinding processing on the outer coating attached to the cutter head according to the size of the cutter head, and finally obtaining the composite reinforced self-repairing material for the surface of the cutter head of the shield machine after the inspection is qualified.
Claims (5)
1. A method for compound strengthening and self-repairing of the surface of a cutter head of a shield machine is characterized in that compound strengthening is carried out through laser cladding of repair powder on the surface of the cutter head, heat preservation is carried out after stress annealing, then a self-repairing material is pressed on the surface of the cutter head to obtain a self-repairing outer layer coating, and the coating obtained through the method can solve the problems that the working environment is complex and the abrasion is serious and the repair is frequent in the using process of the cutter head of the shield machine; the preparation process comprises the following steps: (a) removing rust and oil stains on the surface of the cutter head; (b) uniformly mixing nanoscale graphene, TiC, carbon nano tube, molybdenum dioxide and Q235 powder through ultrasonic vibration, spraying the powder to a cutter wear part through a powder feeding nozzle, filling protective gas, heating to 3200-3500 ℃, controlling the laser power to be 1500-2000W, controlling the spot diameter to be 100-150 um, controlling the laser heat treatment time to be 1-1.5 s, and carrying out one-time or multiple-time laser cladding on the cutter wear part under the irradiation of laser to form a graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 micro-sheet layer on the surface of the cutter wear part; after the cutter head is cooled to the room temperature, stress relief annealing is carried out through induction heating, the temperature is kept for 2-3 hours, and then air cooling is carried out to the room temperature; (c) modifying phenolic resin to obtain nano SiO2、TiO2、Al2O3Adding ZnO powder into phenolic resin, and uniformly mixing by ultrasonic vibration to prepare nano modified phenolic resin; (d) uniformly mixing nano modified phenolic resin, FKF fibers, glass fibers, carbon fibers, barite, ferrochromium ore powder, fluorite powder, alpha-alumina, KH-550 coupling agent and a polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsule to obtain the FKF composite fiber friction enhanced self-repairing outer layer coating material.
2. The method for compositely strengthening and self-repairing the surface of the shield machine cutter head according to claim 1, characterized in that the coating obtained by the method comprises the following components: 10-30 parts of nanoscale graphene, 10-30 parts of TiC10, 10-30 parts of carbon nano tube, 10-30 parts of molybdenum dioxide, 10-30 parts of Q235 powder and nanoscale SiO210 to 30 parts of TiO210 to 30 parts of Al2O310-30 parts of ZnO powder, 10-30 parts of nano modified phenolic resin, 20-30 parts of FKF fibers, 3-6 parts of glass fibers, 3-6 parts of carbon fibers, 3-6 parts of barite, 3-6 parts of ferrochromium mineral powder, 3-6 parts of fluorite powder, 3-6 parts of alpha-alumina, 30-40 parts of KH-550 coupling agent and 30-40 parts of polyurea formaldehyde coated dicyclopentadiene (DCPD) microcapsules.
3. The method for compositely strengthening and self-repairing the surface of the cutter head of the shield tunneling machine according to claim 1, which is characterized in that: the microcapsule added to the production raw materials is to embed the microcapsule containing the repairing agent into a polymer matrix or a coating in advance, when the matrix or the coating material is damaged to generate micro cracks, the stress concentration at the tips of the cracks can lead the capsules to break and release the repairing agent, and when the repairing agent meets a catalyst in the matrix or the coating, a cross-linking curing reaction is generated to repair the crack surfaces, so that the self-repair of the damaged parts is realized.
4. The method for compositely strengthening and self-repairing the surface of the cutter head of the shield tunneling machine according to claim 1, which is characterized in that: the graphene-TiC-carbon nanotube-molybdenum dioxide-Q235 coating added to the production raw materials has excellent high heat conduction, high temperature resistance and wear resistance, can enhance the adhesive force of the coating, has good heat resistance and heat conductivity, can quickly disperse heat generated in the friction process, and prevents the chemical degradation caused by local overheating of the surface of the coating; by adopting a nano particle reinforced composite material technology, the outstanding characteristics of high strength, high modulus, high strength and low friction coefficient of the novel two-dimensional nano material graphene are fully utilized, and the performances of the friction strength, hardness, fatigue resistance and abrasion of the graphene-TiC-carbon nano tube-molybdenum dioxide-Q235 coating are improved.
5. The method for compositely strengthening and self-repairing the surface of the cutter head of the shield tunneling machine according to claim 1, which is characterized in that: the nano-material modified phenolic resin added in the raw materials for production is prepared by adding nano-SiO into the traditional phenolic resin2、TiO2、Al2O3ZnO, composite mineral fiber, glass fiber and carbon fiber are used as reinforcements, barite, chromite powder, fluorite, calcium carbonate and alpha-alumina material are used as friction fillers, KH-550 coupling agent is used as affinity agent, and the nano modified phenolic resin can organically bond all components of the friction material together, endow the material with certain structural strength, greatly influence the friction and wear performance of the material, particularly the high-temperature friction and wear function, and have good pressure resistance.
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| CN101619156A (en) * | 2008-07-01 | 2010-01-06 | 北京工商大学 | Application of micro-capsule self-repair technology in automobile brake shoe made of composite material |
| CN106757012A (en) * | 2017-01-18 | 2017-05-31 | 燕山大学 | A kind of graphene-containing and titanium carbide self-lubricating wear-resistant coating |
| CN108914117A (en) * | 2018-07-25 | 2018-11-30 | 刘常利 | A kind of intensifying method and cutter head of shield machine of cutter head of shield machine |
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| RU2591826C2 (en) * | 2014-09-17 | 2016-07-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Удмуртский государственный университет" (ФГБОУ ВПО "УдГУ") | Method of applying corrosion-resistant carbon coating on steel surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619156A (en) * | 2008-07-01 | 2010-01-06 | 北京工商大学 | Application of micro-capsule self-repair technology in automobile brake shoe made of composite material |
| CN106757012A (en) * | 2017-01-18 | 2017-05-31 | 燕山大学 | A kind of graphene-containing and titanium carbide self-lubricating wear-resistant coating |
| CN108914117A (en) * | 2018-07-25 | 2018-11-30 | 刘常利 | A kind of intensifying method and cutter head of shield machine of cutter head of shield machine |
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