CN106392303A - Machining method for cooling metal surface laser microtextures - Google Patents
Machining method for cooling metal surface laser microtextures Download PDFInfo
- Publication number
- CN106392303A CN106392303A CN201610981257.9A CN201610981257A CN106392303A CN 106392303 A CN106392303 A CN 106392303A CN 201610981257 A CN201610981257 A CN 201610981257A CN 106392303 A CN106392303 A CN 106392303A
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- China
- Prior art keywords
- texture
- metal surface
- surface laser
- cooling
- cooling metal
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Classifications
-
- 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
-
- 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
Abstract
The invention discloses a machining method for cooling metal surface laser microtextures. The machining method for cooling the metal surface laser microtextures comprises the following steps that (1) the surface of a to-be-machined metal part is polished; (2) dry to-be-machined metal part treated in the step (1) is frozen; and (3) the metal part subjected to freezing treatment is etched through a laser device, so that the textures in the required shape are obtained. According to the machining method for cooling the metal surface laser microtextures, freezing treatment is conducted on the metal part before laser machining so that the textures can be made uniform in shape, burrs on the texture surfaces are reduced, the number of aftertreatment procedures for texture machining is reduced, and the machining cost is reduced. The textures are uniform in shape, and lubricating liquid can be stored to make the lubricating performance stable.
Description
Technical field
The invention belongs to surface texture technical field, particularly to a kind of micro- texture processing method.
Background technology
Surface texture technology, as the cutting edge technology in terms of Surface Engineering, has antifriction, liquid storage and advantageously forms bullet
Property the hydrodynamic lubrication effect such as (EHL).Surface-texturing can improve the friction and wear behavior of surface of friction pair, extends its use
In the life-span, to raising surface of friction pair performance and lubricant effect, there is construction value, have to saving energy and protect environment important
Meaning.
Because texture is to industrial importance, many countries in the world, particularly industrially developed country put into a large amount of
Human and material resources and financial resources are engaged in the research of this respect.Many materials scientist, Physical Metallurgy and Branch of Mechanics all in succession from
The research work in thing texture field.There is surface irregularity, after the texture of processing in the existing texture that laser instrument is directly processed
Continuous process step is loaded down with trivial details, the inhomogenous problem of shape of processing.
Content of the invention
It is an object of the invention to provide a kind of cooling metal surface laser micro- texture processing method, to solve above-mentioned technology
Problem.
To achieve these goals, the present invention employs the following technical solutions：
A kind of cooling metal surface laser micro- texture processing method, comprises the following steps：
1) metalwork surface to be processed is processed by shot blasting；
2) by step 1) process after the metalwork to be processed freezing that is dried；
3) metalwork after freezing processing is carried out laser instrument lithography, obtain the texture of required form.
Further, step 2) in will in metalwork cold room at liquid nitrogen, dry ice or -20 DEG C freeze.
Further, step 2) in freezed after metalwork to be processed pack.
Further, step 2) in cooling time be 6h.
Further, step 1) metalwork a size of
Further, texture depth is 50nm～260 μm, and this texture is applied to mechanical movement part friction pair, can store profit
Synovial fluid, thus improving the friction and wear behavior on surface, extends its service life.
Further, step 3) texture be shaped to circular pit, a diameter of 250 μm, processing depth capacity be
268 μm, texture spacing is 625 μm.
Further, step 3) in, laser instrument makes lifting platform rise 5mm, after scanning after setting the parameter processing texture
Marking.
Further, the marking processing number of times of each texture is more than 5 times.
With respect to prior art, the invention has the advantages that：Metal surface laser is micro- knits for a kind of cooling of the present invention
Structure processing method, before Laser Processing, first carries out freezing processing to metalwork, and texture shape can be made homogeneous, reduces texture table
The burr phenomena in face, decreases the postprocessing working procedures of processing texture, saves processing cost.Texture shape is homogeneous, can store
Lubricating fluid makes greasy property stable.
Brief description
Fig. 1 is the surface texture shape and structure schematic diagram of present example 1,2,3；
Fig. 2 is the circular texture shape enlarged diagram of present example 1,2,3；
Fig. 3 is the circular texture of present example 1,2,3 apart from close-up schematic view；
Fig. 4 (a), (b), (c), (d) are respectively in present example 1 and use liquid nitrogen, dry ice, and the texture after refrigated cooling is micro-
Texture microgram in figure and invention comparative example 1；
Circular pit texture three-dimensional copolymerization Jiao's 3D display after Fig. 5 is freezing processing in present example 1 is schemed；
Fig. 6 is circular pit texture three-dimensional copolymerization Jiao's 3D display figure of present example 3；
Fig. 7 is that in present example 1, circular pit texture three-dimensional copolymerization Jiao after freezing processing fathoms figure；
Fig. 8 is that circular pit texture three-dimensional copolymerization Jiao of present example 2 fathoms figure；
Fig. 9 is that circular pit texture three-dimensional copolymerization Jiao of present example 3 fathoms figure；
Figure 10 is the circular pit texture three-dimensional copolymerization coke side view of present example 3；
Figure 11 is the circular pit texture three-dimensional copolymerization coke side view of comparative example 1 of the present invention.
Wherein：1- round pool shape texture；2- round pool shape texture spacing；3 metal dish.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment 1：
As shown in figure 4, a kind of present invention cooling metal surface laser micro- texture processing method, comprise the following steps：
1) metallic disc surface is processed by shot blasting；
2) metal dish being dried pack is put in household freezer, at cold room cooling at liquid nitrogen, dry ice, -20 DEG C
Reason 6h；The effect of sack is to completely cut off dampness, preventing from forming ice film because dampness acts on metal surface.
3) sample after cooling treatment is placed in laser instrument lithography, obtains the texture of required form：Laser instrument is arranged
Process well the parameter of texture, each 20 circles of upper and lower array, a diameter of 250 μm, the spacing between two circles is 625 μm, processing
Number of times is 5 times, adjusts laser energy, marking after scanning.
Embodiment 2：
A kind of present invention cooling metal surface laser micro- texture processing method, comprises the following steps：
1) metallic disc surface is processed by shot blasting；
2) metal dish being dried pack is put in household freezer, freeze 6h at -20 DEG C；
3) sample after cooling treatment is placed in laser instrument lithography, obtains the texture of required form：Laser instrument is arranged
Process well the parameter of texture, each 20 circles of upper and lower array, a diameter of 250 μm, the spacing between two circles is 625 μm, processing
Number of times is 5 times, adjusts laser energy, then adjusts lifting handwheel, makes lifting platform rise 5mm, marking after scanning.
Embodiment 3：
A kind of present invention cooling metal surface laser micro- texture processing method, comprises the following steps：
1) metallic disc surface is processed by shot blasting；
2) metal dish being dried pack is put in household freezer, freeze 6h at -20 DEG C；
3) sample after cooling treatment is placed in laser instrument lithography, obtains the texture of required form：Laser instrument is arranged
Process well the parameter of texture, each 20 circles of upper and lower array, a diameter of 250 μm, the spacing between two circles is 625 μm, every time
Processing number of times is 5 times, adjusts laser energy, then adjusts lifting handwheel, makes lifting platform rise 5mm, scribes, first pass after scanning
After the completion of marking, keep processing part motionless, click on marking, former texture continues processing 5 times, this operation, each pit is total
Meter marking is processed 30 times.
After machining, metal dish is put in beaker, flood metal with dehydrated alcohol reagent, put into ultrasonic cleaner
Middle cleaning, finally dries.
Comparative example 1：
A kind of present invention cooling metal surface laser micro- texture processing method, comprises the following steps：
1) metallic disc surface is processed by shot blasting；
2) it is placed in laser instrument lithography without the sample after freezing processing, obtain the texture of required form：By laser instrument
Set the parameter of processing texture, each 20 circles of upper and lower array, a diameter of 250 μm, the spacing between two circles is 625 μm,
Processing number of times is 5 times, adjusts laser energy, then adjusts lifting handwheel, makes lifting platform rise 5mm, scribes, first pass after scanning
After the completion of marking, keep processing part motionless, click on marking, processing 5 times, this operation circulation 30 times are continued on former texture.
Embodiment 1 obtains the texture of the more burr of texture surface, as shown in figure 5, the wherein most place for dry ice of burr
Reason mode, depth capacity is 168 μm, as shown in Figure 7；Embodiment 2 obtains depth and is 2.3 μm, shows smooth texture, such as Fig. 8
Shown；Embodiment 3 obtains texture surface almost impulse- free robustness, as shown in fig. 6, the homogeneous texture sample of figure pattern, depth capacity
For 268 μm, as shown in Figure 9.The texture shape heterogeneity that comparative example 1 obtains, and texture surface burr is compared with the freezing of embodiment 1-3
How a lot of burr after reason is, rough, as shown in figure 11.Illustrate after cooling treatment, circulate at low energies and repeatedly process, energy
Reach depth and surface topography and all good micro- texture of smooth degree.
Claims (6)
1. a kind of cooling metal surface laser micro- texture processing method is it is characterised in that comprise the following steps：
1) metalwork surface to be processed is processed by shot blasting；
2) by step 1) process after the metalwork to be processed freezing that is dried；
3) metalwork after freezing processing is carried out laser instrument lithography, obtain the texture of required form.
2. a kind of cooling metal surface laser micro- texture processing method according to claim 1 is it is characterised in that step 2)
Freeze in the middle cold room at liquid nitrogen, dry ice or -20 DEG C by metalwork.
3. a kind of cooling metal surface laser micro- texture processing method according to claim 1 is it is characterised in that step 2)
In freezed after metalwork to be processed pack.
4. a kind of cooling metal surface laser micro- texture processing method according to claim 1 is it is characterised in that step 2)
Middle cooling time is 6h.
5. a kind of cooling metal surface laser micro- texture processing method according to claim 1 is it is characterised in that step 3)
In, laser instrument makes lifting platform rise 5mm, marking after scanning after setting the parameter processing texture.
6. a kind of cooling metal surface laser micro- texture processing method according to claim 1 is it is characterised in that each is knitted
The marking processing number of times of structure is more than 5 times.
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| CN201610981257.9A CN106392303A (en) | 2016-11-08 | 2016-11-08 | Machining method for cooling metal surface laser microtextures |
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| CN201610981257.9A CN106392303A (en) | 2016-11-08 | 2016-11-08 | Machining method for cooling metal surface laser microtextures |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107643226A (en) * | 2017-08-28 | 2018-01-30 | 哈尔滨工业大学深圳研究生院 | A kind of method for improving ceramic material friction and wear behavior using Surface Texture |
| CN110695536A (en) * | 2019-09-20 | 2020-01-17 | 中国科学院上海光学精密机械研究所 | Laser processing method |
| CN113414542A (en) * | 2021-06-10 | 2021-09-21 | 常州信息职业技术学院 | Method and device for prolonging service life of surface of part friction pair |
| CN114682922A (en) * | 2022-03-08 | 2022-07-01 | 江苏大学 | Method for regulating and controlling super-hydrophobic surface stress and texture morphology of aluminum alloy prepared by laser etching |
| CN115635205A (en) * | 2022-10-15 | 2023-01-24 | 靖江先锋半导体科技有限公司 | Porous part surface machining method and manufacturing method of welding type spray disc |
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Application publication date: 20170215 |