CN106313926A - Surface modification method for changing surface infiltration performance of impregnated graphite - Google Patents
Surface modification method for changing surface infiltration performance of impregnated graphite Download PDFInfo
- Publication number
- CN106313926A CN106313926A CN201610856086.7A CN201610856086A CN106313926A CN 106313926 A CN106313926 A CN 106313926A CN 201610856086 A CN201610856086 A CN 201610856086A CN 106313926 A CN106313926 A CN 106313926A
- Authority
- CN
- China
- Prior art keywords
- laser
- impregnated graphite
- change
- modifying method
- laser marking
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
Abstract
The invention provides a surface modification method for changing the surface infiltration performance of an impregnated graphite. The surface modification method comprises the steps that a relevant laser marking machine pattern is drawn according to the shape of the impregnated graphite, the surface modification range is determined, and laser marking is performed according to a pattern filling scheme; a test piece to be modified is clamped to a laser operation table, and laser beam focusing is completed; the laser marking parameters are set, wherein the Q frequency is 20 kHz and the jump speed is 2,000 mm/s; different scanning parameters are selected for machining according to difference influences of laser machining on the surface topography and surface features, and the surfaces with the different infiltration performance are obtained, wherein the contact angle ranges 6.7 degrees to 135.8 degrees; meanwhile the whole mechanical performance of a graphite material is not influenced; and the method is easy to implement and can be popularized easily on a large scale.
Description
Technical field
The invention belongs to solid material surface technical field of modification, change impregnated graphite surface wettability particularly to one
The surface modifying method of energy.
Background technology
The features such as the high-temperature stability having due to graphite material itself, corrosion-resistant, resistance to irradiation, graphite material extensively should
For sealing, the field such as bearing, as the typical friction pair material of one.Mechanical performance through the graphite of resin impregnating
More excellent, thus in the thrust bearing under being often used in severe duty, join pair with the composition friction of other hard material.
In mechanical seal, thrust bearing, the friction and wear characteristic between friction pair determines these machines to a certain extent
The service life of tool system core parts and maintenance cycle.The wellability of material the most largely have impact on friction and joins pair
Friction and wear characteristic, especially in thrust bearing, by controlling surface imbibition characteristic and then interface sliding situation can be controlled,
So that thrust bearing realizes high bearing capacity, low friction torque.Therefore, in commercial Application, impregnated graphite surface infiltrates
Property controlled for control friction pair state, reduce frictional dissipation, improve bearing capacity have important practical value.
At present in mandate, the infiltrating patent in disclosed control surface, two classes can be divided into from principle: a class is by being coated with
The technology such as layer change surface molecule structure characteristic or surface energy (CN 101219804A, CN 1669777A, the CN of solid material
1916056A, CN 104419894A), thus change the wellability on surface, another kind of is by the method such as mechanical treatment, corrosion
Changing surface topography, roughness (CN 105665940A, CN 1660924A), the contact area changing solid liquid interface changes leaching
Lubricant nature.But in existing method, the technology such as coating realizes that difficulty is high, step is complicated, and the method changing surface topography changes only
Infiltration degree, it is impossible to change Wettability (hydrophilic/hydrophobic).
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of impregnated graphite surface that changes and soak
Lubricant nature can surface modifying method, simple effectively, step simple, there is infiltration controllability, based on laser marking machine, utilize laser
The hot-working and the surface texture that realize impregnated graphite surface change, and soak from surface topography and molecular characterization Angulation changes surface simultaneously
Lubricant nature.
To achieve these goals, the technical solution used in the present invention is:
A kind of surface modifying method changing impregnated graphite surface wettability energy, including:
Step one, according to impregnated graphite arbitrary shape associated laser marking machine pattern, determine surface modification scope, use figure
The scheme that case is filled carries out laser marking；
Step 2, test specimen to be modified is installed to laser operations platform, and completes laser beam focusing；
Step 3, arrange laser marking parameter be Q frequency for 20kHz, empty hop rate degree is 2000mm/s, at 500mm/s-
Adjust scanning speed in the range of 2000mm/s, in the range of 5W-15W, adjust laser power；
The Different Effects of surface topography and surface character is selected different parameters to add by step 4, utilization Laser Processing
Work, thus obtain different infiltrating surface.
Laser is utilized to irradiate impregnated graphite surface, by regulating different scanning speeds and laser power so that dipping stone
The microscopic appearance on ink surface changes, and molecular structure changes (Raman spectrum change), but is not formed significantly
Micro-texture, does not has obvious pattern array, has ultimately resulted in the controllable variations of impregnated graphite surface wettability.
Described scanning speed 500-2000mm/s, laser power parameters 5-15W, scanning times 1 time.
After laser treatment, the contact angle on impregnated graphite surface arbitrarily can control between 6.7 °～135.8 °.
The optical maser wavelength used is 1.06 μm.
Compared with prior art, the invention has the beneficial effects as follows:
(1) surface character of impregnated graphite is only changed, without affecting the overall mechanical properties of impregnated graphite；
(2) by the adjustment of different laser processing parameters, it is possible to achieve between 6.7 °～135.8 ° on a large scale in contact angle
Any regulation and control, the basis provided for the design of complicated interface sliding；
(3) surface modifying method simple, without using too much complex device, the local table in given shape can be carried out
Face is modified.
Accompanying drawing explanation
Fig. 1 is initial interface contacts Angle Measurements disclosed in the embodiment of the present invention.
Fig. 2 is hydrophilic treated surface contact angle measurement result disclosed in an embodiment of the present invention.
Fig. 3 is hydrophobic treatment surface contact angle measurement result disclosed in an embodiment of the present invention.
Fig. 4 is the scanning electron microscope comparison diagram of graphite surface in the embodiment of the present invention.
Fig. 5 is the Raman spectrum comparison diagram of graphite material in the embodiment of the present invention.
Detailed description of the invention
Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings with embodiment.
The present embodiment uses YAG-50 type lamp pumping laser marking (engraving) machine.Main performance index is as follows: optical maser wavelength
1.06 μm, laser peak power output 50W, laser repetition rate 20-80kHz, scan line speed≤7000mm/s, repeatable accuracy
0.003mm。
The solid sample that the present embodiment uses is the graphite annulus that FH82Z5 type resin impregnating graphite is made, sample external diameter
58mm, internal diameter 42mm.
First working face carries out laser focusing adjust so that working face is on confocal laser face, then basis
Specimen shape and intended modification area draw relevant modified figure, select suitable laser processing parameter to enter graphite sample
Row local surfaces is modified.
Embodiment 1:
Measuring its surface contact angle by surface tension instrument before laser modified is 75.6 °, as shown in fig. 1.Arrange sharp
Photoscanning speed is 2000mm/s, and laser repetition rate is 20kHz, and laser power is 12.5W, scanning times 1, localized region
After carrying out irradiation, utilize surface tension instrument to measure surface contact angle and become 17.2 °, as shown in Fig. 2 left side.
Embodiment 2:
Measuring its surface contact angle by surface tension instrument before laser modified is 75.6 °.Arranging laser scanning speed is
2000mm/s, laser repetition rate is 20kHz, and laser power is 10W, scanning times 1, after localized region carries out irradiation, profit
Measure surface contact angle by surface tension instrument and become 47.3 °, as shown in Fig. 2 right side.
Embodiment 3:
Measuring its surface contact angle by surface tension instrument before laser modified is 75.6 °.Arranging laser scanning speed is
2000mm/s, laser repetition rate is 20kHz, and laser power is 7.5W, scanning times 1, after localized region carries out irradiation, profit
Measure surface contact angle by surface tension instrument and become 96 °, as shown in Fig. 3 left side.
Embodiment 4:
Measuring its surface contact angle by surface tension instrument before laser modified is 75.6 °.Arranging laser scanning speed is
1000mm/s, laser repetition rate is 20kHz, and laser power is 5W, after scanning times 1 localized region carries out irradiation, utilizes
Surface tension instrument measures surface contact angle and becomes 135.8 °, as shown in Fig. 3 right side.
As shown in Figure 4, by the scanning electron microscope after observing each embodiment as a result, it is possible to see laser modified after impregnate stone
Ink surface there occurs morphology change, additionally it can also be seen that the molecular structure on surface also has from the result of the Raman spectrum of Fig. 5
New change, it is thus regarded that the change of surface imbibition characteristic is the two kinds of bars of change due to surface topography and surface molecule structure
Part produces.
Adjustment by different laser processing parameters, it is possible to achieve between 6.7 °～135.8 ° on a large scale in the appointing of contact angle
Meaning regulation and control, choose laser parameter in above-mentioned adjusting range, and along with the increase of laser power, contact angle diminishes therewith, works as laser
When power changes in the range of 5～7.5W, there is hydrophobicity change in surface；When laser power changes in the range of 10～15W, table
Face sends hydrophilic change.During drain water variation, the most notable when scanning speed is 1000mm/s, during hydrophilic change, scanning speed is
During 500mm/s the most notable.
These are only the preferred embodiments of the present invention, be not limited to the present invention, the present invention can have various change and
Change.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (5)
1. the surface modifying method changing impregnated graphite surface wettability energy, it is characterised in that including:
Step one, according to impregnated graphite arbitrary shape associated laser marking machine pattern, determine surface modification scope, use pattern to fill out
The scheme filled carries out laser marking；
Step 2, test specimen to be modified is installed to laser operations platform, and completes laser beam focusing；
Step 3, arrange laser marking parameter be Q frequency for 20kHz, empty hop rate degree is 2000mm/s, adjusts scanning speed and laser
Power is in OK range；
The Different Effects of surface topography and surface character is selected different parameters to be processed by step 4, utilization Laser Processing,
Thus obtain different infiltrating surface.
Change the surface modifying method of impregnated graphite surface wettability energy the most according to claim 1, it is characterised in that utilize
Laser irradiates impregnated graphite surface, by regulating different scanning speeds and laser power so that the microcosmic on impregnated graphite surface
Pattern, molecular structure change, but do not form significant micro-texture, have ultimately resulted in impregnated graphite surface wettability
Controllable variations.
The surface modifying method of change impregnated graphite surface wettability the most according to claim 1 or claim 2 energy, it is characterised in that
Described scanning speed 500-2000mm/s, laser power parameters 5-15W, scanning times 1 time.
Change the surface modifying method of impregnated graphite surface wettability energy the most according to claim 1, it is characterised in that process
After surface contact angle scope be 6.7 °-135.8 °.
Change the surface modifying method of impregnated graphite surface wettability energy the most according to claim 1, it is characterised in that made
Optical maser wavelength be 1.06 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856086.7A CN106313926B (en) | 2016-09-27 | 2016-09-27 | A kind of surface modifying method changing impregnated graphite surface wettability energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856086.7A CN106313926B (en) | 2016-09-27 | 2016-09-27 | A kind of surface modifying method changing impregnated graphite surface wettability energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106313926A true CN106313926A (en) | 2017-01-11 |
| CN106313926B CN106313926B (en) | 2019-01-29 |
Family
ID=57820762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610856086.7A Active CN106313926B (en) | 2016-09-27 | 2016-09-27 | A kind of surface modifying method changing impregnated graphite surface wettability energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106313926B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI827951B (en) * | 2021-07-05 | 2024-01-01 | 國立高雄大學 | Chemical detection platform having concave hole structure and manufacturing method thereof |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH097608A (en) * | 1995-06-21 | 1997-01-10 | Matsushita Electric Ind Co Ltd | Graphite electrode |
| CN2572059Y (en) * | 2002-09-28 | 2003-09-10 | 姚清辉 | Bearing free small submerged electric pump |
| CN2614282Y (en) * | 2003-03-18 | 2004-05-05 | 史志华 | Water-lubricated bearing diving electrical pump |
| CN101219804A (en) * | 2008-01-22 | 2008-07-16 | 北京科技大学 | Method for producing soakage controllable zinc oxide nano-stick array thin film |
| CN101748370A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院兰州化学物理研究所 | Preparation method of textured diamond-like carbon composite film for water lubrication |
| CN101994147A (en) * | 2009-08-12 | 2011-03-30 | 比亚迪股份有限公司 | Surface treatment method of metal base materials |
| CN103201531A (en) * | 2010-09-30 | 2013-07-10 | Ntn株式会社 | Composite plain bearing |
| CN103318878A (en) * | 2013-06-27 | 2013-09-25 | 江南石墨烯研究院 | Preparation method and application of large size and shape ratio graphene microsheet |
| CN103620277A (en) * | 2011-08-05 | 2014-03-05 | 伊格尔工业股份有限公司 | Mechanical seal |
| JP2014183155A (en) * | 2013-03-19 | 2014-09-29 | Ushio Inc | Semiconductor laser device |
| CN203926107U (en) * | 2014-06-10 | 2014-11-05 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump water lubrication radial guiding bearing |
| CN104567502A (en) * | 2014-12-25 | 2015-04-29 | 广东工业大学 | Laser preparation method of micro-heat pipe with discontinuous capillary structure |
| CN104632893A (en) * | 2014-12-25 | 2015-05-20 | 江南大学 | Porous hydrostatic pressure bearing structure based on hydrophobic interfaces |
| CN104646833A (en) * | 2014-12-25 | 2015-05-27 | 广东工业大学 | Laser preparation method of gradient wetted surface of metal substrate |
| CN104947116A (en) * | 2015-05-28 | 2015-09-30 | 湖北工业大学 | Method for preparing aluminum alloy superhydrophobic self-cleaning surface by using ultrashort pulse laser |
| CN104985328A (en) * | 2015-05-28 | 2015-10-21 | 湖北工业大学 | Method for preparing titanium alloy super-hydrophobic anti-frost surface using short pulse laser |
| CN104988507A (en) * | 2015-05-28 | 2015-10-21 | 湖北工业大学 | Method for preparing cast iron super-hydrophobic anti-corrosion surface by means of ultrafast laser |
| US20150376864A1 (en) * | 2013-02-21 | 2015-12-31 | Doosan Infracore Co., Ltd | Double-structure bush and bearing assembly comprising same |
| CN105255338A (en) * | 2015-10-27 | 2016-01-20 | 宝山钢铁股份有限公司 | Galvanized steel sheet excellent in surface abrasion resistance, corrosion resistance and acid and base resistance and water-based surface treating agent |
| CN105665940A (en) * | 2016-01-23 | 2016-06-15 | 北京工业大学 | Method for bidirectional and free control on wettability of surface of biological ceramic |
-
2016
- 2016-09-27 CN CN201610856086.7A patent/CN106313926B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH097608A (en) * | 1995-06-21 | 1997-01-10 | Matsushita Electric Ind Co Ltd | Graphite electrode |
| CN2572059Y (en) * | 2002-09-28 | 2003-09-10 | 姚清辉 | Bearing free small submerged electric pump |
| CN2614282Y (en) * | 2003-03-18 | 2004-05-05 | 史志华 | Water-lubricated bearing diving electrical pump |
| CN101219804A (en) * | 2008-01-22 | 2008-07-16 | 北京科技大学 | Method for producing soakage controllable zinc oxide nano-stick array thin film |
| CN101748370A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院兰州化学物理研究所 | Preparation method of textured diamond-like carbon composite film for water lubrication |
| CN101994147A (en) * | 2009-08-12 | 2011-03-30 | 比亚迪股份有限公司 | Surface treatment method of metal base materials |
| CN103201531A (en) * | 2010-09-30 | 2013-07-10 | Ntn株式会社 | Composite plain bearing |
| CN103620277A (en) * | 2011-08-05 | 2014-03-05 | 伊格尔工业股份有限公司 | Mechanical seal |
| US20150376864A1 (en) * | 2013-02-21 | 2015-12-31 | Doosan Infracore Co., Ltd | Double-structure bush and bearing assembly comprising same |
| JP2014183155A (en) * | 2013-03-19 | 2014-09-29 | Ushio Inc | Semiconductor laser device |
| CN103318878A (en) * | 2013-06-27 | 2013-09-25 | 江南石墨烯研究院 | Preparation method and application of large size and shape ratio graphene microsheet |
| CN203926107U (en) * | 2014-06-10 | 2014-11-05 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump water lubrication radial guiding bearing |
| CN104632893A (en) * | 2014-12-25 | 2015-05-20 | 江南大学 | Porous hydrostatic pressure bearing structure based on hydrophobic interfaces |
| CN104646833A (en) * | 2014-12-25 | 2015-05-27 | 广东工业大学 | Laser preparation method of gradient wetted surface of metal substrate |
| CN104567502A (en) * | 2014-12-25 | 2015-04-29 | 广东工业大学 | Laser preparation method of micro-heat pipe with discontinuous capillary structure |
| CN104947116A (en) * | 2015-05-28 | 2015-09-30 | 湖北工业大学 | Method for preparing aluminum alloy superhydrophobic self-cleaning surface by using ultrashort pulse laser |
| CN104985328A (en) * | 2015-05-28 | 2015-10-21 | 湖北工业大学 | Method for preparing titanium alloy super-hydrophobic anti-frost surface using short pulse laser |
| CN104988507A (en) * | 2015-05-28 | 2015-10-21 | 湖北工业大学 | Method for preparing cast iron super-hydrophobic anti-corrosion surface by means of ultrafast laser |
| CN105255338A (en) * | 2015-10-27 | 2016-01-20 | 宝山钢铁股份有限公司 | Galvanized steel sheet excellent in surface abrasion resistance, corrosion resistance and acid and base resistance and water-based surface treating agent |
| CN105665940A (en) * | 2016-01-23 | 2016-06-15 | 北京工业大学 | Method for bidirectional and free control on wettability of surface of biological ceramic |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI827951B (en) * | 2021-07-05 | 2024-01-01 | 國立高雄大學 | Chemical detection platform having concave hole structure and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106313926B (en) | 2019-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mao et al. | Laser surface texturing and related techniques for enhancing tribological performance of engineering materials: A review | |
| Vilhena et al. | Surface texturing by pulsed Nd: YAG laser | |
| Wu et al. | Study on the oxidation of WC-Co cemented carbide under different conditions | |
| CN102962656B (en) | Compound model processing method and device for cutter | |
| Van Buren et al. | Substantial drag reduction in turbulent flow using liquid-infused surfaces | |
| Xing et al. | Formation of bionic surface textures composed by micro-channels using nanosecond laser on Si3N4-based ceramics | |
| DE112016002815B4 (en) | Metal cutting tool with a solid body lubrication and its processing method | |
| US20220024125A1 (en) | Method for treatment of elements obtained by an additive manufacturing process | |
| Garcia-Giron et al. | Liquid-assisted laser ablation of advanced ceramics and glass-ceramic materials | |
| CN103111819A (en) | Preparation method of cutter surface antisticking antifriction micro mosaic composite texture | |
| US9364912B2 (en) | Method and device for the electrochemical machining of work pieces | |
| Klink et al. | Crater morphology evaluation of contemporary advanced EDM generator technology | |
| CN106313926A (en) | Surface modification method for changing surface infiltration performance of impregnated graphite | |
| CN104550952A (en) | Rapid laser printing device and method for water pump shell | |
| CN103111752A (en) | Method and device for forming micro-texture in composite mode on inner surface of cylinder sleeve through laser | |
| CN104526093B (en) | Method of manufacturing cathode for surface texture micro-electrochemical machining | |
| Hung et al. | Fabrication of microscale concave and grooves through mixed-gas electrochemical jet machining | |
| Mahajan et al. | MRR and surface morphological analysis of electrical-discharge-machined Co–Cr alloy | |
| Wang et al. | Study on SLM fabrication of precision metal parts with overhanging structures | |
| KR100871278B1 (en) | Aerostatic bearing spindle system using unidirectional porous metal | |
| Zhou et al. | Influence of processing medium on frictional wear properties of ball bearing steel prepared by laser surface melting coupled with bionic principles | |
| Mawignon et al. | Laser surface texturing under transformer oil conditions for improved process quality and tribological behaviors | |
| Li et al. | Application of lubrication theory to near-dry green grinding–feasibility analysis | |
| CN103921560A (en) | Laser color marking method and system | |
| CN107760861A (en) | A kind of laser for bearing of wind power generator surface melts surface modification device and method again |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |