CN107190304A - A kind of method that solid lubricant is planted in laser micropore template - Google Patents
A kind of method that solid lubricant is planted in laser micropore template Download PDFInfo
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- CN107190304A CN107190304A CN201610157336.8A CN201610157336A CN107190304A CN 107190304 A CN107190304 A CN 107190304A CN 201610157336 A CN201610157336 A CN 201610157336A CN 107190304 A CN107190304 A CN 107190304A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
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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
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Abstract
The present invention relates to a kind of method that solid lubricant is planted in laser micropore template, belong to solid lubricant field；Specific embodiment is carried out according to the following steps：(1) laser micropore template construct；Array micropore is got with the wear-resisting clad layer surface of laser machine after a polish；(2) before depositing, template surface splash is fallen in pickling；(3) with the method for electrophoretic deposition by molybdenum disulfide (MoS2) and polytetrafluoroethylene (PTFE) (PTFE) mixed lubrication material be planted in micropore；(4) after depositing, dry in an oven；(5) by microwave sintering, it is densified lubricating layer.The lubricating layer that the inventive method is obtained is the storage by the micropore on abrasion-resistant matrix surface to lubriation material, and slow release lubriation material plays lasting lubrication during friction, its lubricating life is largely increased.
Description
Technical field
The present invention relates to solid lubrication technology field, specifically relate to one kind and plant MoS in laser micropore template2With PTFE hybrid solid lubriation materials.
Background technology
Lubriation material is divided into three kinds：Fluid lubricant (lubricating oil), semisolid lubricants (lubricating grease) and kollag.With respect to lubricating oil, fat, kollag has the advantages that very big.Lubricating oil, fat temperature are very narrow using scope, more than this temperature range, and lubricating oil, fat will lose its lubricant effect, and solid lubricant but very wide performance space；For bearing capacity, kollag is much stronger than lubricating oil, fat；In high vacuum, intense radiation, under gas or the medium extreme condition of fluid, lubricating oil, fat easily fail, it is also desirable to by means of kollag；Storage, transport and the use of kollag are to the pollution of environment and product also than lubricating oil, fat much less；The timeliness change of kollag is small, and keeping is more convenient.
Graphite, MoS2, the kollag fragility such as BN it is big, be lost in during lubrication quickly, conventional bonded solid lubricant coating slows down bleeding of lubricant, and Tang Guogang exists《The preparation method and self-lubrication pad of molybdenum disulfide self-lubricating composite coating》It is middle that graphite, molybdenum disulfide and copper powder are mixed into biphosphate al binder, by spraying, it is heating and curing to form lubricating layer, improves this method, but deficiency is still suffered from the performance such as its bearing capacity, lubricating life.
Li Qianqian exists《Magnetron sputtering prepares anti-attrition MoS2The method of/C/Ti laminated films》、《The preparation method of molybdenum disulfide base lubricating wear-resistant composite film》With Zhang Ping's《A kind of excellent MoS of wear Characteristics2- Ti composite membranes and preparation method thereof》MoS is prepared with the method for sputtering2With the composite coating of Ti compounds, by improving the intensity of composite lubricating film itself and bond strength with matrix.But, its manufacturing process requires harsh, and surface treatment is not in place before sputtering, easily peeling phenomenon occurs, and film gauge uniformity is difficult to control to when carrying friction.
Yin Minghua exists《A kind of mosaic solid lubrication bearing》In middle (center) bearing solid lubricant is filled in lubrication hole.But its lubrication hole used is through hole and aperture is larger, still can not effectively control the loss of solid lubricant.
The content of the invention
The problem of it is an object of the invention to overcome the solid lubrication duration short, so as to a kind of method that solid lubricant is planted in laser micropore template provided, constantly lubriation material can be discharged during friction, play the effect of continuous lubrication, thus solve the solid continuous lubrication time it is short the problem of.
To achieve these goals, the present invention provides a kind of method that solid lubricant is planted in laser micropore template, it is characterised in that comprise the following steps：
S1：Laser cladding layer is pre-processed, surface cleaning is allowed to, wherein, cladding layer is first polished, polished respectively, then carries out ultrasonic wave cleaning；
S2：Laser micropore processing is carried out to obtaining laser melting coating layer surface in S1, wherein, the laser cladding layer matrix obtained in S1 is placed in the laser processing technology platform of optical, mechanical and electronic integration, the Process Parameters on Laser cladding layer of adjustment Laser Processing carries out microporous processing, so as to obtain different pore size, different hole depths, different OC microcellular structures；
S3：Post-processed to obtaining micropore laser cladding layer matrix in S2, wherein, matrix surface wiping pickling solution will be first obtained in S2 and will be corroded, then taking-up is rinsed with clear water, is then cleaned by ultrasonic with alcohol, is finally dried up standby；
S4：Electrophoretic deposition is carried out to the micropore substrate that S3 is obtained, wherein, the electrophoretic deposition is carried out in the suspension for include solid lubricant, is dried in an oven after deposition；
S5：The lubricant coating obtained in S4 is sintered, is allowed to be densified.
Further, the micropore depth of the laser microporeization processing obtained in the step S2 is 20~45 μm, wherein, micropore depth is ferrous alloy surface away from the innermost distance of micropore.
Further, the micropore size of the laser microporeization processing obtained in the step S2 is 70~90 μm, wherein, micropore size is the maximum gauge of micropore.
Further, 100~200 μm of the hole center spacing of the micropore of the laser microporeization processing obtained in the step S2, wherein, micropore center spacing is the distance between the micropore center of circle.
Further, in the S4 solid lubricant that electrophoretic deposition is used suspension, wherein, electrophoretic deposition suspension is that 1.0~2.0g dispersants Qula is logical and 2.0~4.0g kollags in 200mL deionized water.
Further, in the S4 electrophoretic deposition use solid lubricant suspension, wherein, solid lubricant is MoS2With PTFE mixing material, PTFE mass fraction is 5~20%.
Further, in the step S5, using microwave sintering, 3 DEG C/min of programming rate, 300~350 DEG C of holding temperature, soaking time 2h.
The mechanism of laser micropore：Using laser beam is focused on to workpiece local heating, the material of focal point is set rapidly to heat up until melting and vaporizing, fusing, evaporation of materials outwards spray in the case where vaporizing the pressure produced, form micropore in this place.
The advantage of the invention is that：The present invention improves the abrasion resistance of workpiece by anti-attrition and wear-resisting two aspects, and the lubricating life of solid lubricant is improved further through two aspects of structure and material in terms of anti-attrition.
Wear-resisting aspect：Substrate used thereof of the present invention is laser cladding layer, and the cladding layer has high rigidity and high-wearing feature.
In terms of anti-attrition：1st, configuration aspects, solid lubricant is planted into laser micropore by the method for electrophoretic deposition, and it is stable store, lubriation material constantly discharges from micropore during workpiece phase mutual friction, make lubrication time to significantly being lifted, improve matrix greasy property.2nd, in terms of material, by adding PTFE, the consistency and bond strength of lubricant are improved.PTFE is a kind of lubricant in itself, and the hybrid energy of different lubricants improves the consistency of lubricant, reduces MoS2MoO is oxidized into during friction3And reduce lubricant effect.PTFE sintering character is good, can improve MoS2With the bond strength of substrate, and PTFE plasticity is good and have certain adhesive, and the loss of lubriation material is slow down in friction of workpiece.
Embodiment
For the purpose of the present invention, technical scheme is more clearly understood, below by embodiment, the present invention is described in further detail.
Embodiment 1
S1：Laser cladding layer matrix is pre-processed, its specification length of side 30mm, thickness 10mm bulk, matrix is polished successively with 500#, 800#, 1200#, 1500# and 2000# sand paper respectively, and the diamond abrasive pastes for being W2.5 with granularity are polished, and make surface smooth.Then it is cleaned by ultrasonic with acetone；
S2：Laser micropore processing is carried out to obtaining ferrous alloy matrix surface in S1, the ferrous alloy matrix obtained in S1 is placed on 20W laser processing technology platforms, its optical maser wavelength is 1064nm, lens 100mm.Equipment is opened, the technological parameter of Laser Processing is adjusted, i.e. average laser power 20W, laser pulse width 200nm, laser frequency 25kHz, single hole action time 0.3ms.Laser height is adjusted, is that workpiece surface is placed at laser focal.Graphics processing is drawn on computers, and it is 100 μm to set punching spacing.Laser machined, it is 71.5 μm that aperture is obtained on ferrous alloy surface, micropore depth is 19.7 μm, micropore centre-to-centre spacing is 100 μm of micropore；
S3：Handle obtaining the laser melting coating layer surface for containing micropore in surface in S2, wherein, matrix surface, which is wiped, with the mixed acid that hydrofluoric acid (mass fraction >=40%), nitric acid (mass fraction is 65%~68%) and water volume ratio are 1: 2: 3 configuration carries out corrosion pickling 1.5min, then taking-up is rinsed with clear water, in triplicate.Then it is cleaned by ultrasonic with acetone, is finally dried up standby；
S4：Electrophoretic deposition is carried out to the substrate that S3 is obtained, the template prepared is placed in MoS2Electrophoretic deposition is carried out in/PTFE (PTFE mass fractions are 5%) suspension, wherein suspension constituents lead to and 2.5g solid lubricants to left floating 1.5g dispersants Qula in 200mL decentralized medium deionized water.Electrophoretic deposition parameter is deposition voltage 100V, and electrode spacing 15mm, sedimentation time is 20min；
S5：The lubricant coating obtained in S4 is sintered, wherein selecting microwave sintering, sintering parameter is 3 DEG C/min of programming rate, 300 DEG C of holding temperature, soaking time 2h.
Embodiment 2
The present embodiment is same as Example 1, unlike：
S2：Laser micropore processing is carried out to obtaining ferrous alloy matrix surface in S1, the ferrous alloy matrix obtained in S1 is placed on 20W laser processing technology platforms, its optical maser wavelength is 1064nm, lens 100mm.Equipment is opened, the technological parameter of Laser Processing is adjusted, i.e. average laser power 20W, laser pulse width 200nm, laser frequency 25kHz, single hole action time 0.7ms.Laser height is adjusted, is that workpiece surface is placed at laser focal.Graphics processing is drawn on computers, and it is 100 μm to set punching spacing.Laser machined, it is 86.7 μm that aperture is obtained on ferrous alloy surface, micropore depth is 42.3 μm, micropore centre-to-centre spacing is 100 μm of micropore；
Embodiment 3
The present embodiment is same as Example 1, unlike：
S2：Laser micropore processing is carried out to obtaining ferrous alloy matrix surface in S1, the ferrous alloy matrix obtained in S1 is placed on 20W laser processing technology platforms, its optical maser wavelength is 1064nm, lens 100mm.Equipment is opened, the technological parameter of Laser Processing is adjusted, i.e. average laser power 20W, laser pulse width 200nm, laser frequency 25kHz, single hole action time 0.7ms.Laser height is adjusted, is that workpiece surface is placed at laser focal.Graphics processing is drawn on computers, and it is 100 μm to set punching spacing.Laser machined, it is 86.7 μm that aperture is obtained on ferrous alloy surface, micropore depth is 42.3 μm, micropore centre-to-centre spacing is 140 μm of micropore；
Embodiment 4
The present embodiment is same as Example 1, unlike：
S2：Laser micropore processing is carried out to obtaining ferrous alloy matrix surface in S1, the ferrous alloy matrix obtained in S1 is placed on 20W laser processing technology platforms, its optical maser wavelength is 1064nm, lens 100mm.Equipment is opened, the technological parameter of Laser Processing is adjusted, i.e. average laser power 20W, laser pulse width 200nm, laser frequency 25kHz, single hole action time 0.5ms.Laser height is adjusted, is that workpiece surface is placed at laser focal.Graphics processing is drawn on computers, and it is 100 μm to set punching spacing.Laser machined, it is 86.7 μm that aperture is obtained on ferrous alloy surface, micropore depth is 42.3 μm, micropore centre-to-centre spacing is 200 μm of micropore；
Embodiment 5
The present embodiment is same as Example 1, unlike：
S4：Electrophoretic deposition is carried out to the substrate that S3 is obtained, the template prepared is placed in MoS2Electrophoretic deposition is carried out in/PTFE (PTFE mass fractions are 10%) suspension, wherein suspension constituents lead to and 2.5g solid lubricants to left floating 1.5g dispersants Qula in 200mL decentralized medium deionized water.Electrophoretic deposition parameter is deposition voltage 100V, and electrode spacing 15mm, sedimentation time is 20min；
Embodiment 6
The present embodiment is same as Example 1, unlike：
S4：Electrophoretic deposition is carried out to the substrate that S3 is obtained, the template prepared is placed in MoS2Electrophoretic deposition is carried out in/PTFE (PTFE mass fractions are 20%) suspension, wherein suspension constituents lead to and 2.5g solid lubricants to left floating 1.5g dispersants Qula in 200mL decentralized medium deionized water.Electrophoretic deposition parameter is deposition voltage 100V, and electrode spacing 15mm, sedimentation time is 20min；
Embodiment 7
The present embodiment is same as Example 1, unlike：
S5：The lubricant coating obtained in S4 is sintered, wherein selecting microwave sintering, sintering parameter is 3 DEG C/min of programming rate, 350 DEG C of holding temperature, soaking time 2h.
The advantage of the invention is that：The present invention improves the abrasion resistance of workpiece by anti-attrition and wear-resisting two aspects, and the lubricating life of solid lubricant is improved further through two aspects of structure and material in terms of anti-attrition.
Wear-resisting aspect：Substrate used thereof of the present invention is laser cladding layer, and the cladding layer has high rigidity and high-wearing feature.
In terms of anti-attrition：1st, configuration aspects, solid lubricant is planted into laser micropore by the method for electrophoretic deposition, and it is stable store, lubriation material constantly discharges from micropore during workpiece phase mutual friction, make lubrication time to significantly being lifted, improve matrix greasy property.2nd, in terms of material, by adding PTFE, the consistency and bond strength of lubricant are improved.PTFE is a kind of lubricant in itself, and the hybrid energy of different lubricants improves the consistency of lubricant, reduces MoS2MoO is oxidized into during friction3And reduce lubricant effect.PTFE sintering character is good, can improve MoS2With the bond strength of substrate, and PTFE plasticity is good and have certain adhesive, and the loss of lubriation material is slow down in friction of workpiece.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any change or replacement expected without creative work, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be determined by the scope of protection defined in the claims.
Claims (7)
1. a kind of method that solid lubricant is planted in laser micropore template, its feature is, including following several
Individual step：
S1：Laser cladding layer matrix is pre-processed, surfacing, cleaning is allowed to, wherein, matrix is first
Polished, polished respectively, then carry out ultrasonic wave cleaning；
S2：Laser micropore processing is carried out to obtaining cladding layer matrix surface in S1, wherein, it will be obtained in S1
The laser cladding layer matrix obtained is placed in the laser processing technology platform of optical, mechanical and electronic integration, adjustment Laser Processing
Process Parameters on Laser cladding layer carry out microporous processing, so as to obtain different pore size, different hole depth, no
With OC microcellular structure；
S3：Subsequent treatment is carried out to obtaining micropore laser cladding layer matrix in S2, wherein, it will first be obtained in S2
Matrix surface wipes pickling solution and carries out corrosion pickling, and then taking-up is rinsed with clear water, then clear with alcohol ultrasound
Wash, finally dry up standby；
S4：Electrophoretic deposition is carried out to the micropore substrate that S3 is obtained, wherein, the electrophoretic deposition is including solid
Carry out, dried in an oven after deposition in the suspension of lubriation material；
S5：The lubricant coating obtained in S4 is sintered, is allowed to be densified.
2. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is that laser melting coating laminar substrate used has high rigidity, high-wearing feature.
3. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is that in the step S2, laser power is small, and action time is short, small to base material heat affecting.Using arteries and veins
Wash fibre laser off, it 15~20W, punching time is that 0.3~0.7ms, focal length are 0mm that laser power, which is,.
4. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is, the micropore size obtained in the step S2 is 70~90 μm, hole depth is 20~45 μm, in micropore
The heart is away from for 100~200 μm.
5. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is, in described step S4, and electrophoretic deposition suspension is 1.0~2.0g points in 200mL deionized water
Powder Qula is led to and 2.0~4.0g kollags.
6. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is that in described step S4, solid lubricant is MoS2With PTFE mixed lubrication material, PTFE
Mass fraction be 5%~20%.
7. a kind of method that solid lubricant is planted in laser micropore template as claimed in claim 1, it is special
Point is, in described step S3, using microwave sintering, 3 DEG C/min of programming rate, holding temperature
300~350 DEG C, soaking time 2h.
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Cited By (7)
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| CN107699942A (en) * | 2017-09-25 | 2018-02-16 | 谢金庚 | A kind of wear-resistant metal gear and preparation method thereof |
| CN108517549A (en) * | 2018-02-27 | 2018-09-11 | 中国计量大学 | A kind of preparation method of aluminium alloy compound anode oxide film |
| CN109127887A (en) * | 2018-07-28 | 2019-01-04 | 吴江市贝灵电机有限公司 | A kind of stamping parts surface covering |
| CN109208059A (en) * | 2018-09-11 | 2019-01-15 | 在邦润滑材料（上海）有限公司 | A kind of nano molybdenum disulfide coating swimming plating solution and preparation method thereof |
| CN110747461A (en) * | 2019-10-29 | 2020-02-04 | 江西省科学院应用物理研究所 | Wear-resistant coating with molybdenum disulfide, polytetrafluoroethylene and solid lubricant injected into friction surface and micropore array |
| CN113445043A (en) * | 2021-06-11 | 2021-09-28 | 西安工业大学 | Surface micro-pit self-lubricating coating and preparation method thereof |
| CN115895009A (en) * | 2022-12-16 | 2023-04-04 | 杨宗文 | Wear-resistant and super-hydrophobic polycarbonate substrate and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699942A (en) * | 2017-09-25 | 2018-02-16 | 谢金庚 | A kind of wear-resistant metal gear and preparation method thereof |
| CN108517549A (en) * | 2018-02-27 | 2018-09-11 | 中国计量大学 | A kind of preparation method of aluminium alloy compound anode oxide film |
| CN108517549B (en) * | 2018-02-27 | 2019-10-18 | 中国计量大学 | A kind of preparation method of aluminium alloy compound anode oxide film |
| CN109127887A (en) * | 2018-07-28 | 2019-01-04 | 吴江市贝灵电机有限公司 | A kind of stamping parts surface covering |
| CN109208059A (en) * | 2018-09-11 | 2019-01-15 | 在邦润滑材料（上海）有限公司 | A kind of nano molybdenum disulfide coating swimming plating solution and preparation method thereof |
| CN110747461A (en) * | 2019-10-29 | 2020-02-04 | 江西省科学院应用物理研究所 | Wear-resistant coating with molybdenum disulfide, polytetrafluoroethylene and solid lubricant injected into friction surface and micropore array |
| CN113445043A (en) * | 2021-06-11 | 2021-09-28 | 西安工业大学 | Surface micro-pit self-lubricating coating and preparation method thereof |
| CN115895009A (en) * | 2022-12-16 | 2023-04-04 | 杨宗文 | Wear-resistant and super-hydrophobic polycarbonate substrate and preparation method thereof |
| CN115895009B (en) * | 2022-12-16 | 2024-04-05 | 福州恒美光电材料有限公司 | Wear-resistant super-hydrophobic polycarbonate substrate and preparation method thereof |
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