CN105782243A - Solid lubrication treatment method for friction pair laser micro-texture surface - Google Patents

Solid lubrication treatment method for friction pair laser micro-texture surface Download PDF

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CN105782243A
CN105782243A CN201610148070.0A CN201610148070A CN105782243A CN 105782243 A CN105782243 A CN 105782243A CN 201610148070 A CN201610148070 A CN 201610148070A CN 105782243 A CN105782243 A CN 105782243A
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friction pair
texture
laser
micro
self
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CN105782243B (en
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何镇盐
解玄
华希俊
刘凯
孙建国
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Jiangsu University
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Jiangsu University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • B23K26/355—Texturing
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/06—Metal compounds
    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
    • C10M2201/0663—Molybdenum sulfide used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/08—Solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/50—Lubricating properties
    • F16C2202/54—Molybdenum disulfide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/40—Imides, e.g. polyimide [PI], polyetherimide [PEI]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Lubricants (AREA)
  • Sliding-Contact Bearings (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention provides a solid lubrication treatment method for a friction pair laser micro-texture surface. The method comprises the steps that a micro-pit shape is machined on the surface of a friction pair through the laser surface texturing technology; all components in a self-lubrication composite are evenly mixed and dried to be used later; the surface micro-pit in a pre-treated die is filled with the self-lubrication composite through a die hot-press curing filling method; pressure maintaining hot-press curing filling is conducted through a hot press; then, the filled friction pair is heated for 20 min at the temperature of 250 DEG C and then protected by 99.9% of N2 to be heated for 30 min at the temperature ranging from 370 DEG C to 385 DEG C, insulating sintering is conducted for 0.5 h-1.0 h, and sintering forming is conducted after cooling; and solid lubrication can be finished after surface posttreatment. According to the method, the high-temperature sliding friction performance of the self-lubrication surface of a micro-texture can be improved, a good lubricating effect can be achieved under the conditions such as the high temperature and the high pressure, the bearing capability of a nanometer composite solid lubricating agent is effectively improved, and the nanometer composite solid lubricating agent can be applied under some complex and strict work conditions.

Description

A kind of friction pair laser micro-texture surface solid lubrication processing method
Technical field
The invention belongs to surface of friction pair lubricating area, especially relate to a kind of friction pair laser micro-texture surface solid lubrication processing method.
Background technology
Sliding friction pair is widely used in various components of machine, wherein uses the most extensive with sliding bearing, and it is obtained for relatively broad application in every field such as aircraft, automobile, Wave-activated power generation equipments.Sliding bearing is the important mechanical part being mainly used to support axial workpiece in plant equipment, therefore inevitably results in bearing shell surface and produces certain friction and wear.Under general condition, sliding bearing is commonly used the modes such as water lubrication, oil lubrication and grease lubrication and is lubricated.But, under modernization processing conditions, machine uses ground more and more extensive under the special operation conditions such as high temperature, low temperature, heavy duty, vacuum, many dirt, radiation, and the composite lubricating film that conventional lubrication mode is formed is highly vulnerable to breakage and causes lubrication failure.
Laser surface micro-texture technology (LST technology) is development in recent years a kind of surface topography process technology, and this technology is that sliding bearing surface of friction pair provides a kind of novel solid lubricating system.The Surface Texture technology of a kind of advanced person that laser surface texture technology is got up as latest development, it is because of the many merits such as working (machining) efficiency height, machining accuracy height, good, the green non-pollution of controllability.It can process the Surface Texture patterns such as common circular pit, triangular depression, square pit, linear pattern groove, V-groove, ring shaped slot.
The patent of application number 201110148420.0 proposes one and carries out method for self-lubricating treatment of laser micro-texture at bearing surface, it first uses nick chamber or the laser micro-machining technology of micro groove to bearing surface, and then bearing surface uses the shaping bonding technology of self-lubricating composite；This method can effectively reduce the fretting wear of bearing surface, but plays the material MoS of antifriction function in its composite2Powder can occur oxidation reaction to lose the effect of lubrication antifriction in the high temperature more than 370 DEG C；The patent of Application No. 201210109126.3 proposes a kind of gear and cam face micro-embedding self-lubricating texture preparation method, but its used to mold the filling effect of sintering process after filler poor, remote-effects lubricant effect.
Summary of the invention
For the deficiency such as deposit in prior art that lubrication antifriction effect at high operating temperatures is poor and filling effect is poor, the invention provides a kind of friction pair laser micro-texture surface solid lubrication processing method, to improve friction pair lubricant effect at high temperature.
The present invention realizes above-mentioned technical purpose by techniques below means.
A kind of friction pair laser micro-texture surface solid lubrication processing method, comprises the steps:
(1) laser surface texturing techniques is used to process nick hole pattern at surface of friction pair；
(2) each component in self-lubricating composite is mixed, standby after drying；Described self-lubricating composite includes each component of following mass percent: 10-15% polyimides (PI), 74-80% nanometer MoS2, 0-10% CNT additive (CNTs), 0-5% bonding agent；
(3), after being pre-processed by die surface, by mould heat pressure solidification completion method, self-lubricating composite pre-fill described in step (2) is charged to the nick hole of surface of friction pair described in step (1)；Reusable heat press pressurization self-lubricating composite carries out pressurize hot-press solidifying filling；
(4) friction pair after filling in step (3) first heats 20min in temperature 250 DEG C, subsequently 99.9% N2Under protection, in temperature 370-385 DEG C, heat 30min, heat preservation sintering 0.5-1.0h, after cooling sinter molding；
(5) surface of friction pair of sinter molding described in step (4) is post-processed.
Preferably, the process of nick hole pattern is processed at surface of friction pair as follows: use YLP-HP-1-100-100-100 type optical fiber laser that surface of friction pair carries out the processing of laser surface micro-texture described in step (1), wherein optical maser wavelength is 1064nm, pulse width is 50-500ns, laser power is 20-150W, laser pulse repetition frequency is 10-100kHz, and laser instrument is 0.1-0.5ms to the duration of single nick hole texture, and texture density domination is at 20-50%.
Preferably, a diameter of 20-200 μm in described nick hole, the degree of depth is 5-80 μm.
Preferably, self-lubricating composite described in step (2) dries 2-3h to being dried at temperature 100-130 DEG C.
Preferably, described in step (2), the mass percent of CNT is 6%.
Preferably, described in step (3), the pressure of hot press is 7.5MPa.
Beneficial effects of the present invention:
A kind of friction pair laser micro-texture surface solid lubrication processing method of the present invention, by by nanometer MoS2Add in original self-lubricating composite with CNT, the high temperature sliding friction property on micro-texture self-lubricating surface can be improved, good lubricant effect is played under the conditions of high temperature, high pressure etc., and effectively enhance the bearing capacity of nano composite solid lubricant, can apply under some complicated harsh operating modes.Use laser micro-texture technology, it is possible to achieve the micro groove matched with lubrication, forming requirements or dimple size and distribution thereof；After using laser surface micro-texture technology and solid lubrication to combine, comparing the sample of other different surface treatment, filled composite lubricant texture surface coefficient of friction is minimum, and steadily；By surface solid self-lubrication treatment, reduce the Plastic Flow resistance of moulding material, it is achieved that the Optimum distribution of Frotteurism, improve yield rate and forming speed；Change the spraying coating process that kollag is traditional, protect working environment, be greatly saved the use cost of lubricant；Using and mold the method pointing kollag in micro-texture being combined with pressurize hot-press solidifying completion method, can be sufficient filling with solid lubricant, filling rate is up to 99.9%, and simple process, filling are uniformly, reliably.
Accompanying drawing explanation
Fig. 1 is the present invention pit schematic diagram through Laser Processing.
Fig. 2 is that nick cheats physical dimension figure.
Fig. 3 is for adding nanometer MoS2With interpolation ordinary solid MoS2Coefficient of friction comparison diagram.
Fig. 4 fills shape appearance figure for single nick hole and the micro-pit surface of entirety after using die pressing to fill.
Fig. 5 fills shape appearance figure for single nick hole and the micro-pit surface of entirety after using pressurize hot-press solidifying completion method to fill.
Fig. 6 is die pressing and pressurize hot-press solidifying completion method filler rear surface roughness comparison diagram.
Fig. 7 is coefficient of friction comparison diagram after die pressing and pressurize hot-press solidifying completion method filler.
Fig. 8 is for filling MoS2-PI micro-texture nano composite solid lubricated surface the friction coefficient time-varying relationship curve map at different ambient temperatures.
Fig. 9 is for filling MoS2-PI-CNTs micro-texture nano composite solid lubricated surface the friction coefficient time-varying relationship curve map at different ambient temperatures.
Figure 10 is for filling different content CNT sample coefficient of friction change curve.
Figure 11 is the friction coefficient content of carbon nanotubes change curve.
Figure 12 is sample TS2-1 and TS2-3 abrasion rear surface SEM shape appearance figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Comparative example 1
(1) laser surface texturing techniques is used to process nick hole pattern at surface of friction pair, detailed process is: use YLP-HP-1-100-100-100 type optical fiber laser that surface of friction pair carries out the processing of laser surface micro-texture, wherein optical maser wavelength is 1064nm, pulse width is 50-500ns, laser power is 20-150W, laser pulse repetition frequency is 10-100kHz, and laser instrument is 0.1-0.5ms to the duration of single nick hole texture, and texture density domination is at 20-50%.
(2) mix each component in self-lubricating composite, at temperature 100-130 DEG C, dry 2-3h to the most standby；Described self-lubricating composite includes each component of following mass percent: 20% polyimides (PI) and 80%MoS2；
(3), after being pre-processed by die surface, by mould heat pressure solidification completion method, self-lubricating composite pre-fill described in step (2) is charged to the nick hole of surface of friction pair described in step (1)；Die pressing specific process is: the solid lubricant powder being equipped with in advance is evenly coated with one layer on micro-texture specimen surface, compressing tablet is utilized after solid lubricant powder layer is carried out pre-pressing, to put a smooth compressing tablet the most lightly, now in order to after preventing the demoulding lubricants stick on compressing tablet, between solid lubricant powder layer and compressing tablet, put a high temperature resistant not sticky paper the thinnest both separated.Then sample and compressing tablet entirety are put in simple die pressue device, sample is formally pressurizeed by the nut that tights a bolt, after having pressurizeed, mould is put into and preset in the high temperature furnace that temperature is 250 DEG C (having reached the vitrification point of polyimides), mould is taken out after heating 20min, the nut that again tights a bolt pressurizes, put it into again and high temperature furnace is carried out heat 20min, high temperature furnace power supply is disconnected after so repeating three times, sample is allowed to naturally cool to room temperature with high temperature furnace, last die sinking is taken out sample and utilizes abrasive paper for metallograph to be removed by kollag unnecessary for specimen surface lightly；
(4) friction pair after filling in step (3) first heats 20min in temperature 250 DEG C, subsequently 99.9% N2Under protection, in temperature 370-385 DEG C, heat 30min, heat preservation sintering 0.5-1.0h, after cooling sinter molding；
(5) surface of friction pair of sinter molding described in step (4) is post-processed.
By in Fig. 1 and Fig. 2 it can be seen that nick hole marshalling, size uniform；The diameter in described nick hole can reach 20-200 μm, and the degree of depth is 5-80 μm.
Embodiment 1
(1) with described in comparative example 1.
(2) mix each component in self-lubricating composite, at temperature 100-130 DEG C, dry 2-3h to the most standby；Described self-lubricating composite includes each component of following mass percent: 20% polyimides (PI) and 80% nanometer MoS2；
(3), after being pre-processed by die surface, by mould heat pressure solidification completion method, self-lubricating composite pre-fill described in step (2) is charged to the nick hole of surface of friction pair described in step (1)；Reusable heat press pressurization self-lubricating composite carries out pressurize hot-press solidifying filling；Wherein mould heat pressure solidification is filled the most identical with described in comparative example 1, two groups of nuts up and down of the simple die pressue device after having tightened subsequently are nested in a pair smooth circular steel disk respectively, and be wholy placed in the high temperature furnace of 250 DEG C, take out after heating 40min, being placed on YB32-100B universal hydraulic press and keep constant hydraulic press pressure to pressurize it, the pressure of hot press is 7.5MPa；After sample naturally cools to room temperature, sample is taken out in die sinking, and during in order to prevent from pressurizeing, cooling velocity is too fast, and before pressurization starts, the upper and lower at mould respectively places one layer of smooth heat shield.
(4) friction pair after filling in step (3) first heats 20min in temperature 250 DEG C, subsequently 99.9% N2Under protection, in temperature 370-385 DEG C, heat 30min, heat preservation sintering 0.5-1.0h, after cooling sinter molding；
(5) surface of friction pair of sinter molding described in step (4) is post-processed.
Surface of friction pair obtained by above-described embodiment is investigated under the following conditions its coefficient of friction situation of change in time, test ambient temperature be respectively room temperature, 100 DEG C, 200 DEG C, 300 DEG C, 400 DEG C, the test period of every kind of temperature is 30min；Rotating speed is 100r/min, and test load is that 100N is constant, and result is as shown in Figure 8.
By alone for comparative example 1 common MoS2Nanometer MoS is used instead with in embodiment 12Contrast, from figure 3, it can be seen that add nanometer MoS2The coefficient of friction of rear specimen surface is lower, i.e. lubricant effect is more preferable, this is because nanometer MoS2Size than common MoS2Smaller, it is easier to be embedded and retained within the trough between surface of friction pair crest, thus increases the real contact area between two slidingsurfaces, and nanometer MoS2Specific surface area than common MoS2Specific surface area big many, its surface can be than common MoS2Surface can be high.In the cyclic process of " abrasion-repair-abrasion-repair " of surface solid lubricating film, due to nanometer MoS2Surface can be higher, it is easier to absorption on surface of friction pair, thus accelerates the repair to the solid lubricating film that is worn, so that the solid lubricating film formed is more continuous and firm, therefore containing nanometer MoS2The lubricant effect ratio of micro-texture solid lubricant surface containing common MoS2The lubricant effect of micro-texture solid lubricant surface more preferable；Nanometer MoS2Than common MoS2There is certain heat-resisting quantity.
By mould therefor hot pressing in comparative example 1 mould therefor hot-press solidifying completion method and comparative example 1-hot press pressurization contrast, can be seen that from Fig. 4, Fig. 5, Fig. 6 and Fig. 7, result shows that lubricant is substantially flush with surface of test piece in the nick hole that pressurize hot-press solidifying completion method processes, and shows that pointing is respond well.
Surface of friction pair obtained by embodiment 1 is investigated its coefficient of friction situation of change in time under the following conditions, test ambient temperature be respectively room temperature, 100 DEG C, 200 DEG C, 300 DEG C, 400 DEG C, the test period of every kind of temperature is 30min；Rotating speed is 100r/min, and test load is that 100N is constant, and result is as shown in Figure 8.
Embodiment 2
(1) with described in comparative example 1.
(2) mix each component in self-lubricating composite, at temperature 100-130 DEG C, dry 2-3h to the most standby；Described self-lubricating composite includes each component of following mass percent: 10-15% polyimides (PI), 74-80% nanometer MoS2, 0-12% CNT additive (CNTs), 0-5% bonding agent；
(3), after being pre-processed by die surface, by mould heat pressure solidification completion method, self-lubricating composite pre-fill described in step (2) is charged to the nick hole of surface of friction pair described in step (1)；Reusable heat press pressurization self-lubricating composite carries out pressurize hot-press solidifying filling；This step (3) is in the same manner as in Example 2.
(4) friction pair after filling in step (3) first heats 20min in temperature 250 DEG C, subsequently 99.9% N2Under protection, in temperature 370-385 DEG C, heat 30min, heat preservation sintering 0.5-1.0h, after cooling sinter molding；
(5) surface of friction pair of sinter molding described in step (4) is post-processed.
Surface of friction pair obtained by above-described embodiment is investigated under the following conditions its coefficient of friction situation of change in time, test ambient temperature be respectively room temperature, 200 DEG C, 400 DEG C, the test period of every kind of temperature is 30min；Rotating speed is 100r/min, and test load is that 100N is constant, and result is as shown in Figure 9.
Investigate 10-15% polyimides (PI), 74-80% nanometer MoS2, 0-12% CNT additive (CNTs) different ratio (the see table shown in) impact on friction pair coefficient of friction, as shown in Figure 10 and Figure 11, result shows that the interpolation of CNT additive (CNTs) can make the coefficient of friction of friction pair significantly reduce, and heat-resisting quantity strengthens.
As shown in figure 12, the sample TS2-1 surface of carbon-free nanoscale pipe has obvious polishing scratch, and the sample TS2-3 surface containing 6wt% CNT is without obvious polishing scratch, illustrates that appropriate CNT is conducive to reducing the abrasion on surface.
Described embodiment be the present invention preferred embodiment; but the present invention is not limited to above-mentioned embodiment; in the case of without departing substantially from the flesh and blood of the present invention, any conspicuously improved, replacement or modification that those skilled in the art can make belong to protection scope of the present invention.

Claims (6)

1. friction pair laser micro-texture surface solid lubrication processing method, it is characterised in that comprise the steps:
(1) laser surface texturing techniques is used to process nick hole pattern at surface of friction pair；
(2) each component in self-lubricating composite is mixed, standby after drying；Described self-lubricating composite includes as follows Each component of mass percent: 10-15% polyimides (PI), 74-80% nanometer MoS2, 0-10% CNT additive (CNTs), 0-5% bonding agent；
(3) after die surface being pre-processed, by mould heat pressure solidification completion method by self-lubricating composite described in step (2) Pre-fill is charged to the nick hole of surface of friction pair described in step (1)；Reusable heat press pressurization self-lubricating composite carries out pressurize heat Cured filling；
(4) friction pair after filling in step (3) first heats 20min in temperature 250 DEG C, subsequently 99.9% N2 Under protection, in temperature 370-385 DEG C, heat 30min, heat preservation sintering 0.5-1.0h, after cooling sinter molding；
(5) surface of friction pair of sinter molding described in step (4) is post-processed.
A kind of friction pair laser micro-texture surface solid lubrication processing method the most according to claim 1, it is characterised in that Described in step (1) surface of friction pair process nick hole pattern process as follows: use YLP-HP-1-100-100-100 Type optical fiber laser carries out the processing of laser surface micro-texture to surface of friction pair, and wherein optical maser wavelength is 1064nm, pulse width For 50-500ns, laser power is 20-150W, and laser pulse repetition frequency is 10-100kHz, and single nick is cheated by laser instrument The duration of texture is 0.1-0.5ms, and texture density domination is at 20-50%.
A kind of friction pair laser micro-texture surface solid lubrication processing method the most according to claim 1 and 2, its feature exists In, a diameter of 20-200 μm in described nick hole, the degree of depth is 5-80 μm.
A kind of friction pair laser micro-texture surface solid lubrication processing method the most according to claim 1 and 2, its feature exists In, self-lubricating composite described in step (2) dries 2-3h to being dried at temperature 100-130 DEG C.
A kind of friction pair laser micro-texture surface solid lubrication processing method the most according to claim 1 and 2, its feature exists In, described in step (2), the mass percent of CNT is 6%.
A kind of friction pair laser micro-texture surface solid lubrication processing method the most according to claim 1 and 2, its feature exists In, described in step (3), the pressure of hot press is 7.5MPa.
CN201610148070.0A 2016-03-15 2016-03-15 A kind of micro- texture surface solid lubrication processing method of secondary laser of friction Expired - Fee Related CN105782243B (en)

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CN107389346A (en) * 2017-07-27 2017-11-24 燕山大学 Surface Texture self-lubricating material friction pre-filled device and its pre-filled technique of friction
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GB2566224A (en) * 2017-06-27 2019-03-06 Univ Jiangsu Filling device and method for filling micro-texture pits with solid lubricating material
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CN108274125A (en) * 2018-01-17 2018-07-13 江苏大学 A kind of axis hole tightening matching surface and preparation method thereof
CN108274125B (en) * 2018-01-17 2024-06-07 江苏大学 Shaft hole tight-fit surface and manufacturing method thereof
CN108612759A (en) * 2018-07-09 2018-10-02 武汉科技大学 A kind of thrust pad bearing that inclines with micro- texture area and slip surface
CN109593442A (en) * 2018-12-26 2019-04-09 清华大学 A kind of selfreparing based on micro- texture surface, self-lubricating coat in use preparation method
CN109990196A (en) * 2019-03-27 2019-07-09 上海理工大学 For the secondary adaptive surface texture that rubs
CN110355078A (en) * 2019-07-29 2019-10-22 大连海事大学 A method of slowing down packaging solid self-lubricating agent in the micro- texture in surface and discharges
CN110883497B (en) * 2019-12-02 2020-10-20 北京理工大学 Self-lubricating formula supersound rolling press device of instrument bandeau microarray structure
CN110883497A (en) * 2019-12-02 2020-03-17 北京理工大学 Self-lubricating formula supersound rolling press device of instrument bandeau microarray structure
CN113103134A (en) * 2021-04-12 2021-07-13 江苏科技大学 Bearing bush texture internal solid lubricant pressing device and method
CN113103134B (en) * 2021-04-12 2022-04-15 江苏科技大学 Bearing bush texture internal solid lubricant pressing device and method
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