CN112058611A - Method for processing engine shaft sleeve by adopting laser texturing - Google Patents
Method for processing engine shaft sleeve by adopting laser texturing Download PDFInfo
- Publication number
- CN112058611A CN112058611A CN202010935300.4A CN202010935300A CN112058611A CN 112058611 A CN112058611 A CN 112058611A CN 202010935300 A CN202010935300 A CN 202010935300A CN 112058611 A CN112058611 A CN 112058611A
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- laser
- texturing
- engine
- mixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09D7/20—Diluents or solvents
-
- 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
-
- 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
- C09D7/65—Additives macromolecular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2301/00—Inorganic additives or organic salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2320/00—Organic additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2234—Oxides; Hydroxides of metals of lead
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2244—Oxides; Hydroxides of metals of zirconium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Lubricants (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a method for processing an engine shaft sleeve by adopting laser texturing, which comprises the following steps: the method includes the steps that a vehicle engine shaft sleeve is cleaned; secondly, carrying out surface texturing treatment; carrying out heat treatment after polishing and cleaning; preparing a mixed paint; fifthly, spraying the mixed coating on the surface of the shaft sleeve by using a spray gun to obtain the shaft sleeve after the film is sprayed; sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature. The invention adopts laser surface texturing pretreatment process for the shaft sleeve, and adopts the antifriction and wear-resistant coating on the textured surface, thereby enhancing the binding force between the surface of the shaft sleeve and the coating, effectively improving the lubricating property between the shaft sleeve and the balance shaft, and also improving the corrosion resistance of the shaft sleeve in oil medium.
Description
Technical Field
The invention relates to the technical field of vehicle engines, in particular to a method for processing an engine shaft sleeve by adopting laser texturing.
Background
The main source of noise and vibration of vehicles is that various inertia forces cannot be completely balanced in the running process of an engine, and in order to reduce or eliminate the noise or vibration, various automobile factories at home and abroad currently adopt a balance shaft technology to eliminate or reduce the vibration of the engine.
The shaft sleeve in the engine takes cast iron as a base body, the shaft sleeve is arranged on the balance shaft to protect the balance shaft, but the balance shaft and the shaft sleeve are continuously rubbed in the matching use process, after the engine runs for a long time, the inner wall of the shaft sleeve is abraded, so that the gap between the balance shaft and the shaft sleeve is increased, the jump of the balance shaft is increased, the normal operation of the balance shaft is influenced, the working reliability of the engine is reduced, and the possibility of seizure of the balance shaft and the shaft sleeve of the engine is increased. At present, a mode of adding lubricating oil between a balance shaft and a shaft sleeve is adopted to ensure sufficient lubrication between the balance shaft and the shaft sleeve, but a small gap between the balance shaft and the shaft sleeve and relative high-speed operation enable the balance shaft and the shaft sleeve to be in frequent contact, and particularly, the balance shaft and the shaft sleeve are easy to wear under the conditions of starting and poor oil, so that the shaft sleeve has the problems that the shaft sleeve is seriously worn and even scrapped due to the fact that the self lubricating function of the shaft sleeve is incomplete in the using process, and on the other hand, the maintenance frequency of the balance shaft and the shaft sleeve can be increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for processing an engine shaft sleeve by adopting laser texturing to improve the lubricating property between the shaft sleeve and a balance shaft.
In order to solve the problems, the invention provides a method for processing an engine shaft sleeve by adopting laser texturing, which comprises the following steps:
the method includes the steps that a vehicle engine shaft sleeve is cleaned;
carrying out surface texturing treatment on the shaft sleeve obtained in the step by adopting an LMS-10 multidimensional laser fine micro-machining system;
the shaft sleeve obtained in the step II is subjected to heat treatment after being polished and cleaned;
preparing a mixed paint:
sequentially adding 100 parts of epoxy resin and 25-35 parts of molybdenum disulfide into 140-160 parts of dispersion medium by weight, grinding and dispersing by a conical mill, pouring into a ball milling tank, sequentially adding 1.3-1.5 parts of anticorrosive additive, 2.0-2.3 parts of wear-resistant additive, 0.1 part of polyisobutylene succinimide and 50 parts of dispersion medium, and carrying out ball milling for 24 hours to obtain uniformly dispersed mixed coating;
fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under compressed air or compressed nitrogen to obtain the shaft sleeve after film spraying;
sixthly, placing the shaft sleeve sprayed with the film for several minutes at room temperature in clean air, curing at a gradient temperature, and cooling at room temperature.
In the step II, laser processing parameters are set to be 10-100 KHz of pulse frequency, 6-7W of laser power, 1-5 times of processing times and 1-10 mm/s of scanning speed.
The condition of heat treatment in the step three is that the temperature is 50-200 ℃ and the time is 10-60 min.
The epoxy resin refers to novolac epoxy resin.
The purity of the molybdenum disulfide is more than 98%, and the particle size is less than 5 microns.
The anticorrosive additive is one or more of lanthanum fluoride, cerium fluoride and mixed rare earth.
The wear-resistant additive is prepared by mixing lead oxide, boron nitride and zirconium oxide according to the weight ratio of 0.8-1.0: 0.7-0.8: 0.5 part by weight of the uniformly mixed mixture.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 40-70% of acetone, 20-40% of dimethylbenzene and 10-40% of ethylene glycol ethyl ether according to volume percentage.
Sixthly, keeping the temperature at 100 +/-10 ℃ for 60 minutes under the condition of gradient temperature curing; keeping the temperature at 150 +/-10 ℃ for 60 minutes; keeping the temperature at 180 +/-10 ℃ for 120 minutes.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts laser surface texturing pretreatment process for the shaft sleeve, which can increase the bonding area between the coating and the substrate and disperse the tensile stress of the interface, thereby enhancing the bonding strength of the interface of the coating substrate, reducing the peeling of the coating and effectively improving the corrosion resistance of the coating. The laser texturing processing part on the surface of the shaft sleeve is shown in figure 1, the surface texture appearance of the shaft sleeve is a circular micro pit or a linear micro pit, the diameter is 20-200 micrometers or the line width is 20-100 micrometers, the depth is 1-50 micrometers, and the texture area density is 10-50%.
2. The invention adopts the antifriction and antiwear coating on the textured surface, enhances the binding force between the surface of the shaft sleeve and the coating, can effectively improve the lubricating property between the shaft sleeve and the balance shaft, and also improves the corrosion resistance of the shaft sleeve in an oil medium. Meanwhile, the lubricating device can provide excellent lubricating capability under oil-free conditions such as starting and the like, and the optimal vibration and noise reduction effect is realized.
3. The purity of the molybdenum disulfide in the mixed coating is more than 98 percent, and the granularity is less than 5 microns, so that the molybdenum disulfide can be well matched with a resin matrix, and the anti-friction and anti-wear performance of the coating is improved.
4. The mixed paint of the invention is provided with the anti-corrosion additive, thus effectively improving the anti-corrosion performance of the coating.
5. The mixed paint of the invention is provided with the wear-resistant additive, thus effectively improving the anti-friction and anti-wear performance of the coating.
6. The dispersion medium in the mixed coating is a mixed organic solvent, so that the epoxy resin can be fully dissolved in the solvent.
7. The polyisobutylene polysuccinimide in the mixed coating is used as a surfactant, so that the smoothness of the coating is improved.
8. The process of the invention is simple, and the prepared coating is proved by detection that the surface coating of the shaft sleeve after film spraying has high binding force and smooth surface, and the lubricating property between the shaft sleeve and the balance shaft is improved (see table 1).
TABLE 1 Main Performance index of coatings prepared according to the invention
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a laser surface texturing and film spraying portion of a shaft sleeve in embodiment 1 of the present invention (where 1 is an inner end surface of the shaft sleeve, and 2 is an inner hole surface of the shaft sleeve).
Fig. 2 is an SEM image of a laser-textured surface of a sleeve in example 1 of the present invention.
Fig. 3 is a SEM image of a cross section of the laser-textured surface sprayed film of the bushing in example 1 of the present invention.
Detailed Description
Embodiment 1 a method of treating an engine bushing with laser texturing comprising the steps of:
firstly, carrying out ultrasonic cleaning on a vehicle engine shaft sleeve in acetone for 10 min.
The shaft sleeve obtained in the steps is subjected to surface texturing treatment by adopting an LMS-10 multidimensional laser fine micromachining system. Wherein: the laser wavelength is 532nm, the laser power is 6.5W, the pulse frequency is 40KHz, the processing times are 3 times, and the scanning speed is 5 mm/s.
Fig. 2 is a SEM image of the laser-textured surface of the sleeve. As can be seen from FIG. 2, the texture morphology of the inner surface of the processed shaft sleeve component is circular micro-pits, the diameter is about 100 microns, the depth is 15 microns, and the texture area density is 20%.
And thirdly, slightly polishing the shaft sleeve obtained in the second step by using 1500# silicon carbide abrasive paper, then performing ultrasonic cleaning in acetone for 10min, and then performing heat treatment at 150 ℃ for 30 min.
Preparing a mixed paint:
according to the weight portion, firstly, 100g of epoxy resin and 30g of molybdenum disulfide are sequentially added into 150g of dispersion medium, the mixture is poured into a ball milling tank after being grinded and dispersed by a conical mill, then 1.5g of cerium fluoride, 2.2g of anticorrosive additive, 0.1g of polyisobutylene polysuccinimide and 50g of dispersion medium are sequentially added, and the uniformly dispersed mixed coating is obtained after ball milling is carried out for 24 hours.
Wherein: the wear-resistant additive is a mixture of 0.9g of lead oxide, 0.8g of boron nitride and 0.5g of zirconium oxide which are uniformly mixed.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 70% of acetone, 20% of dimethylbenzene and 10% of ethylene glycol ethyl ether according to volume percentage.
And fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under the gas pressure of 0.2MPa under the condition of compressed air (oil-free and water-free) or compressed nitrogen, and standing the sprayed shaft sleeve for 30min at room temperature to obtain the shaft sleeve after film spraying.
Sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature.
The coating thickness can obtain satisfactory effect within 20-50 microns. The film spraying part of the shaft sleeve is shown in figure 1.
FIG. 3 is a SEM image of the cross section of the laser-textured surface sprayed film of the bushing. As can be seen from fig. 3, the coating layer can be well combined with the shaft sleeve substrate and the laser-textured micro pits, and the bonding force between the coating layer and the surface of the shaft sleeve is improved.
Embodiment 2 a method of processing an engine bushing using laser texturing, comprising the steps of:
firstly, carrying out ultrasonic cleaning on a vehicle engine shaft sleeve in acetone for 10 min.
The shaft sleeve obtained in the steps is subjected to surface texturing treatment by adopting an LMS-10 multidimensional laser fine micromachining system. Wherein: the laser wavelength is 532nm, the laser power is 6.5W, the pulse frequency is 40KHz, the processing times are 3 times, and the scanning speed is 5 mm/s. The texture appearance of the surface of the processed shaft sleeve is as follows: circular micro-pits with diameter of 80 microns, depth of 20 microns and texture area density of 15%.
And thirdly, slightly polishing the shaft sleeve obtained in the second step by using 1500# silicon carbide abrasive paper, then performing ultrasonic cleaning in acetone for 10min, and then performing heat treatment at 150 ℃ for 30 min.
Preparing a mixed paint:
according to the weight portion, firstly, 100g of epoxy resin and 35g of molybdenum disulfide are sequentially added into 160g of dispersion medium, the mixture is poured into a ball milling tank after being grinded and dispersed by a conical mill, then 1.4g of cerium fluoride, 2.0g of anticorrosive additive, 0.1g of polyisobutylene polysuccinimide and 50g of dispersion medium are sequentially added, and the uniformly dispersed mixed coating is obtained after ball milling is carried out for 24 hours.
Wherein: the wear-resistant additive is a mixture of 0.8g of lead oxide, 0.7g of boron nitride and 0.5g of zirconium oxide which are uniformly mixed.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 60% of acetone, 30% of dimethylbenzene and 10% of ethylene glycol ethyl ether according to volume percentage.
And fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under the gas pressure of 0.2MPa under the condition of compressed air (oil-free and water-free) or compressed nitrogen, and standing the sprayed shaft sleeve for 30min at room temperature to obtain the shaft sleeve after film spraying.
Sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature.
Embodiment 3 a method of processing an engine bushing using laser texturing, comprising the steps of:
firstly, carrying out ultrasonic cleaning on a vehicle engine shaft sleeve in acetone for 10 min.
The shaft sleeve obtained in the steps is subjected to surface texturing treatment by adopting an LMS-10 multidimensional laser fine micromachining system. Wherein: the laser wavelength is 532nm, the laser power is 6W, the pulse frequency is 30KHz, the processing times are 2 times, and the scanning speed is 4 mm/s. The texture appearance of the surface of the processed shaft sleeve is as follows: linear micro-pits with width of 80 microns, depth of 30 microns and texture area density of 20%.
And thirdly, slightly polishing the shaft sleeve obtained in the second step by using 1500# silicon carbide abrasive paper, then performing ultrasonic cleaning in acetone for 10min, and then performing heat treatment at 150 ℃ for 30 min.
Preparing a mixed paint:
according to the weight portion, firstly, 100g of epoxy resin and 25g of molybdenum disulfide are sequentially added into 140g of dispersion medium, the mixture is poured into a ball milling tank after being grinded and dispersed by a conical mill, then 1.3g of cerium fluoride, 2.3g of anticorrosive additive, 0.1g of polyisobutylene polysuccinimide and 50g of dispersion medium are sequentially added, and the uniformly dispersed mixed coating is obtained after ball milling is carried out for 24 hours.
Wherein: the wear-resistant additive is a mixture of 1.0g of lead oxide, 0.8g of boron nitride and 0.5g of zirconium oxide which are uniformly mixed.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 50% of acetone, 30% of dimethylbenzene and 20% of ethylene glycol ethyl ether according to volume percentage.
And fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under the gas pressure of 0.2MPa under the condition of compressed air (oil-free and water-free) or compressed nitrogen, and standing the sprayed shaft sleeve for 30min at room temperature to obtain the shaft sleeve after film spraying.
Sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature.
Embodiment 4 a method of processing an engine bushing using laser texturing, comprising the steps of:
firstly, carrying out ultrasonic cleaning on a vehicle engine shaft sleeve in acetone for 10 min.
The shaft sleeve obtained in the steps is subjected to surface texturing treatment by adopting an LMS-10 multidimensional laser fine micromachining system. Wherein: the laser wavelength is 532nm, the laser power is 7W, the pulse frequency is 10KHz, the processing times are 1 time, and the scanning speed is 1 mm/s. The texture appearance of the surface of the processed shaft sleeve is as follows: linear micro-pits with width of 90 microns, depth of 25 microns and texture area density of 25%.
And thirdly, slightly polishing the shaft sleeve obtained in the second step by using 1500# silicon carbide abrasive paper, then performing ultrasonic cleaning for 10min in acetone, and then performing heat treatment for 60min at 50 ℃.
Preparing a mixed paint:
according to the weight portion, firstly, 100g of epoxy resin and 30g of molybdenum disulfide are sequentially added into 150g of dispersion medium, the mixture is poured into a ball milling tank after being grinded and dispersed by a conical mill, then 1.5g of cerium fluoride, 2.1g of anticorrosive additive, 0.1g of polyisobutylene polysuccinimide and 50g of dispersion medium are sequentially added, and the uniformly dispersed mixed coating is obtained after ball milling is carried out for 24 hours.
Wherein: the wear-resistant additive is a mixture of 0.85g of lead oxide, 0.75g of boron nitride and 0.5g of zirconium oxide which are uniformly mixed.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 40% of acetone, 40% of dimethylbenzene and 20% of ethylene glycol ethyl ether according to volume percentage.
And fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under the gas pressure of 0.2MPa under the condition of compressed air (oil-free and water-free) or compressed nitrogen, and standing the sprayed shaft sleeve for 30min at room temperature to obtain the shaft sleeve after film spraying.
Sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature.
Embodiment 5 a method of processing an engine bushing using laser texturing, comprising the steps of:
firstly, carrying out ultrasonic cleaning on a vehicle engine shaft sleeve in acetone for 10 min.
The shaft sleeve obtained in the steps is subjected to surface texturing treatment by adopting an LMS-10 multidimensional laser fine micromachining system. Wherein: the laser wavelength is 532nm, the laser power is 7W, the pulse frequency is 100KHz, the processing times are 5 times, and the scanning speed is 10 mm/s. The texture appearance of the surface of the processed shaft sleeve is as follows: linear micro-pits with width of 100 microns, depth of 35 microns and texture area density of 30%.
And thirdly, slightly polishing the shaft sleeve obtained in the second step by using 1500# silicon carbide abrasive paper, then performing ultrasonic cleaning in acetone for 10min, and then performing heat treatment at 200 ℃ for 10 min.
Preparing a mixed paint:
according to the weight portion, firstly, 100g of epoxy resin and 30g of molybdenum disulfide are sequentially added into 150g of dispersion medium, the mixture is poured into a ball milling tank after being grinded and dispersed by a conical mill, then 1.5g of cerium fluoride, 2.2g of anticorrosive additive, 0.1g of polyisobutylene polysuccinimide and 50g of dispersion medium are sequentially added, and the uniformly dispersed mixed coating is obtained after ball milling is carried out for 24 hours.
Wherein: the wear-resistant additive is a mixture of 0.9g of lead oxide, 0.8g of boron nitride and 0.5g of zirconium oxide which are uniformly mixed.
The dispersion medium is a mixed organic solvent obtained by uniformly mixing 40% of acetone, 20% of dimethylbenzene and 40% of ethylene glycol ethyl ether according to volume percentage.
And fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under the gas pressure of 0.2MPa under the condition of compressed air (oil-free and water-free) or compressed nitrogen, and standing the sprayed shaft sleeve for 30min at room temperature to obtain the shaft sleeve after film spraying.
Sixthly, the shaft sleeve sprayed with the film is placed in clean air at room temperature for a plurality of minutes, and then the shaft sleeve is solidified at the gradient temperature and cooled at room temperature.
In the above examples 1 to 5, the epoxy resin is novolac epoxy resin, which has good heat resistance, adhesion and corrosion resistance.
The purity of the molybdenum disulfide is more than 98 percent, and the particle size is less than 5 microns.
The anticorrosive additive is one or more of lanthanum fluoride, cerium fluoride and mixed rare earth.
The condition of gradient temperature solidification refers to keeping the temperature at 100 +/-10 ℃ for 60 minutes; keeping the temperature at 150 +/-10 ℃ for 60 minutes; keeping the temperature at 180 +/-10 ℃ for 120 minutes.
Claims (9)
1. A method of laser texturing an engine shaft sleeve, comprising the steps of:
the method includes the steps that a vehicle engine shaft sleeve is cleaned;
carrying out surface texturing treatment on the shaft sleeve obtained in the step by adopting an LMS-10 multidimensional laser fine micro-machining system;
the shaft sleeve obtained in the step II is subjected to heat treatment after being polished and cleaned;
preparing a mixed paint:
sequentially adding 100 parts of epoxy resin and 25-35 parts of molybdenum disulfide into 140-160 parts of dispersion medium by weight, grinding and dispersing by a conical mill, pouring into a ball milling tank, sequentially adding 1.3-1.5 parts of anticorrosive additive, 2.0-2.3 parts of wear-resistant additive, 0.1 part of polyisobutylene succinimide and 50 parts of dispersion medium, and carrying out ball milling for 24 hours to obtain uniformly dispersed mixed coating;
fifthly, spraying the mixed coating on the surface of the shaft sleeve obtained in the step three by using a spray gun under compressed air or compressed nitrogen to obtain the shaft sleeve after film spraying;
sixthly, placing the shaft sleeve sprayed with the film for several minutes at room temperature in clean air, curing at a gradient temperature, and cooling at room temperature.
2. The method of laser texturing an engine bushing according to claim 1, wherein: in the step II, laser processing parameters are set to be 10-100 KHz of pulse frequency, 6-7W of laser power, 1-5 times of processing times and 1-10 mm/s of scanning speed.
3. The method of laser texturing an engine bushing according to claim 1, wherein: the condition of heat treatment in the step three is that the temperature is 50-200 ℃ and the time is 10-60 min.
4. The method of laser texturing an engine bushing according to claim 1, wherein: the epoxy resin refers to novolac epoxy resin.
5. The method of laser texturing an engine bushing according to claim 1, wherein: the purity of the molybdenum disulfide is more than 98%, and the particle size is less than 5 microns.
6. The method of laser texturing an engine bushing according to claim 1, wherein: the anticorrosive additive is one or more of lanthanum fluoride, cerium fluoride and mixed rare earth.
7. The method of laser texturing an engine bushing according to claim 1, wherein: the wear-resistant additive is prepared by mixing lead oxide, boron nitride and zirconium oxide according to the weight ratio of 0.8-1.0: 0.7-0.8: 0.5 part by weight of the uniformly mixed mixture.
8. The method of laser texturing an engine bushing according to claim 1, wherein: the dispersion medium is a mixed organic solvent obtained by uniformly mixing 40-70% of acetone, 20-40% of dimethylbenzene and 10-40% of ethylene glycol ethyl ether according to volume percentage.
9. The method of laser texturing an engine bushing according to claim 1, wherein: sixthly, keeping the temperature at 100 +/-10 ℃ for 60 minutes under the condition of gradient temperature curing; keeping the temperature at 150 +/-10 ℃ for 60 minutes; keeping the temperature at 180 +/-10 ℃ for 120 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935300.4A CN112058611A (en) | 2020-09-08 | 2020-09-08 | Method for processing engine shaft sleeve by adopting laser texturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935300.4A CN112058611A (en) | 2020-09-08 | 2020-09-08 | Method for processing engine shaft sleeve by adopting laser texturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112058611A true CN112058611A (en) | 2020-12-11 |
Family
ID=73664366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010935300.4A Pending CN112058611A (en) | 2020-09-08 | 2020-09-08 | Method for processing engine shaft sleeve by adopting laser texturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112058611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662279A (en) * | 2020-12-15 | 2021-04-16 | 中国地质大学（武汉） | Erosion and wear resistant base material and preparation method and application thereof |
| CN113560152A (en) * | 2021-07-26 | 2021-10-29 | 中国科学院兰州化学物理研究所 | Surface lubrication treatment method for vacuum current-carrying sliding electric contact component |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055195A (en) * | 1990-06-02 | 1991-10-09 | 中国科学院兰州化学物理研究所 | Antirust dry film lubricant |
| CN101094731A (en) * | 2004-12-10 | 2007-12-26 | 马勒国际公司 | Connecting rod for a combustion engine and method for coating the plain bearing surfaces thereof |
| CN102559349A (en) * | 2011-12-21 | 2012-07-11 | 湖南江滨机器（集团）有限责任公司 | Dry film lubricant composition |
| CN103307106A (en) * | 2013-06-28 | 2013-09-18 | 江苏大学 | Self-lubricating processing method of bearing |
| CN103862883A (en) * | 2014-04-01 | 2014-06-18 | 深圳市沃尔核材股份有限公司 | Laser engraving typewriter |
| EP2334443B1 (en) * | 2008-08-01 | 2016-10-26 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Method for using a super-slippery thin layer characterised by the method for making same |
| CN106047060A (en) * | 2016-06-24 | 2016-10-26 | 河南科技大学 | Self-lubricating composite coating and preparation method and self-lubricating spherical plain bearing and preparation method |
| CN106676449A (en) * | 2015-11-04 | 2017-05-17 | 中国人民解放军装甲兵工程学院 | Method for improving bonding strength of coating |
| CN106925894A (en) * | 2017-03-15 | 2017-07-07 | 江苏理工学院 | A kind of method that laser micro molding prepares bearing corrosion-resistant surface |
| CN107759964A (en) * | 2017-10-25 | 2018-03-06 | 长沙五犇新材料科技有限公司 | A kind of polyformaldehyde composite material and its production and use |
| CN109054625A (en) * | 2018-07-20 | 2018-12-21 | 中国科学院兰州化学物理研究所 | A kind of air-bearing compound polyimide film and preparation method thereof |
| CN109836959A (en) * | 2017-09-20 | 2019-06-04 | 中国科学院金属研究所 | A kind of wear-resistant self-lubricating anticorrosive coating and the preparation method and application thereof |
| CN109937240A (en) * | 2016-11-22 | 2019-06-25 | 马勒发动机系统英国有限公司 | Slide unit, material and method |
-
2020
- 2020-09-08 CN CN202010935300.4A patent/CN112058611A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055195A (en) * | 1990-06-02 | 1991-10-09 | 中国科学院兰州化学物理研究所 | Antirust dry film lubricant |
| CN101094731A (en) * | 2004-12-10 | 2007-12-26 | 马勒国际公司 | Connecting rod for a combustion engine and method for coating the plain bearing surfaces thereof |
| EP2334443B1 (en) * | 2008-08-01 | 2016-10-26 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Method for using a super-slippery thin layer characterised by the method for making same |
| CN102559349A (en) * | 2011-12-21 | 2012-07-11 | 湖南江滨机器（集团）有限责任公司 | Dry film lubricant composition |
| CN103307106A (en) * | 2013-06-28 | 2013-09-18 | 江苏大学 | Self-lubricating processing method of bearing |
| CN103862883A (en) * | 2014-04-01 | 2014-06-18 | 深圳市沃尔核材股份有限公司 | Laser engraving typewriter |
| CN106676449A (en) * | 2015-11-04 | 2017-05-17 | 中国人民解放军装甲兵工程学院 | Method for improving bonding strength of coating |
| CN106047060A (en) * | 2016-06-24 | 2016-10-26 | 河南科技大学 | Self-lubricating composite coating and preparation method and self-lubricating spherical plain bearing and preparation method |
| CN109937240A (en) * | 2016-11-22 | 2019-06-25 | 马勒发动机系统英国有限公司 | Slide unit, material and method |
| CN106925894A (en) * | 2017-03-15 | 2017-07-07 | 江苏理工学院 | A kind of method that laser micro molding prepares bearing corrosion-resistant surface |
| CN109836959A (en) * | 2017-09-20 | 2019-06-04 | 中国科学院金属研究所 | A kind of wear-resistant self-lubricating anticorrosive coating and the preparation method and application thereof |
| CN107759964A (en) * | 2017-10-25 | 2018-03-06 | 长沙五犇新材料科技有限公司 | A kind of polyformaldehyde composite material and its production and use |
| CN109054625A (en) * | 2018-07-20 | 2018-12-21 | 中国科学院兰州化学物理研究所 | A kind of air-bearing compound polyimide film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王海斗等: "《固体润滑膜层技术与应用》", 31 March 2009, 国防工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112662279A (en) * | 2020-12-15 | 2021-04-16 | 中国地质大学（武汉） | Erosion and wear resistant base material and preparation method and application thereof |
| CN113560152A (en) * | 2021-07-26 | 2021-10-29 | 中国科学院兰州化学物理研究所 | Surface lubrication treatment method for vacuum current-carrying sliding electric contact component |
| CN113560152B (en) * | 2021-07-26 | 2022-09-30 | 中国科学院兰州化学物理研究所 | Surface lubrication treatment method for vacuum current-carrying sliding electric contact component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112058611A (en) | Method for processing engine shaft sleeve by adopting laser texturing | |
| CN106321635A (en) | Low friction bearing shell of engine and fabrication method of low friction bearing shell | |
| CN101275606A (en) | Manufacturing process of high-power low-speed diesel shaft bushing | |
| CN103147033B (en) | Vehicle shock absorber piston rod spraying technology | |
| CN106826571A (en) | A kind of method of gear surface complex intensifying | |
| CN101225856B (en) | Technique for manufacturing high-carbon steel thrust sliding bearing of high-power low speed diesel engine | |
| CN107570766A (en) | Cast iron drilling equipment and its boring method under interior cold low-temperature trace lubricating condition | |
| CN112008609A (en) | Core-shell abrasive jet polishing method | |
| CN113980545B (en) | Polyether-ether-ketone/black-phosphorus self-lubricating composite coating, composite material and preparation method of composite material | |
| CN108907074B (en) | Anti-oxidation release agent and preparation method and use method thereof | |
| CN109457211B (en) | Preparation method of wear-resistant antifriction coating with highly dispersed lubricant phase | |
| CN108330430B (en) | Method for improving bonding strength of crankshaft axial surface plasma spraying Mo coating | |
| CN215035987U (en) | Inner hole grinding coolant supply device based on eddy current cooling | |
| Enomoto et al. | New water-based fluids as alternatives to oil-based fluids in superfinishing processes | |
| CN102827669B (en) | The preparation method of autoreconditioning for worn metals additive, additive and lubricating oil | |
| CN109877713B (en) | Post-treatment method for coated cutter and micro-lubrication processing method after post-treatment method | |
| CN107312595A (en) | A kind of grinding steel ball liquid and preparation method thereof | |
| CN113430037A (en) | Special grinding fluid for ELID grinding of aluminum-based diamond composite material | |
| CN104833387A (en) | Oil nozzle abrasive flow machining single factor test analysis method | |
| CN108150651B (en) | Spray seal ring for stern shaft, spray material and method for manufacturing spray seal ring | |
| Razak et al. | A review of minimum quantity lubricant on machining performance | |
| RU2150369C1 (en) | Method of strengthening treatment of cylindrical surfaces by shot-blasting and cavities | |
| CN215788115U (en) | A drilling grinding device for flywheel ring gear processing | |
| CN100423856C (en) | Method for improving binding strength of coating on internal multiple keys | |
| JP2016169725A (en) | Manufacturing method of thermally-sprayed cylinder block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |