CN106624349A - Aluminum alloy with bionic surface and aluminum alloy drill rod - Google Patents
Aluminum alloy with bionic surface and aluminum alloy drill rod Download PDFInfo
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- CN106624349A CN106624349A CN201611215496.XA CN201611215496A CN106624349A CN 106624349 A CN106624349 A CN 106624349A CN 201611215496 A CN201611215496 A CN 201611215496A CN 106624349 A CN106624349 A CN 106624349A
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- cell cube
- bionical cell
- bionical
- helicals
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 40
- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 21
- 238000010168 coupling process Methods 0.000 claims abstract description 21
- 238000005859 coupling reaction Methods 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 239000004411 aluminium Substances 0.000 claims description 53
- 229910052782 aluminium Inorganic materials 0.000 claims description 53
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 53
- 230000008018 melting Effects 0.000 claims description 19
- 238000002844 melting Methods 0.000 claims description 19
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000010006 flight Effects 0.000 claims description 4
- 238000007712 rapid solidification Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 30
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract description 5
- 238000005542 laser surface treatment Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 21
- 239000010410 layer Substances 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 6
- 229910001008 7075 aluminium alloy Inorganic materials 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 241000254173 Coleoptera Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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
- B23K26/354—Working by laser beam, e.g. welding, cutting or boring for surface treatment by melting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Plasma & Fusion (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Optics & Photonics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to an aluminum alloy with a bionic coupling surface and an aluminum alloy drill rod. Bionic unit bodies are processed on the surface of an aluminum alloy parent body. Vickers hardness of each bionic unit body is 140HV25/10-190HV25/10, crystalline grains are cell crystals and columnar crystals, the average value of the crystalline grain sizes is 5-30 micrometer. Different spaces and inclined angles of spiral bionic unit bodies or grid-shaped bionic unit bodies are prepared on the aluminum alloy drill rod, and can be correspondingly suitable for drilling of different stratums and combined according to the stratum characteristics of different regions in the practical application. Universality is good. A laser surface treatment method is adopted to prepare the bionic unit bodies with the crystalline grain structures being refined and the hardness being higher than the parent body on the surface of the aluminum alloy drill rod, so that hardness, abrasion resistance performance and toughness of the surface of the aluminum alloy drill rod are significantly improved. Compared with a traditional strengthening method, operation is easy, the production efficiency is high, automation is easy to achieve, and application and popularization are easy to achieve.
Description
Technical field
The invention belongs to metal material surface strengthening technologies field, is related to a kind of aluminium alloy with bionic surface, has
The aluminium drill pipe on high-strength tenacity Bionic wear-resisting top layer.
Background technology
In Process of Oil Well Drilling, drilling mud is transported to drill bit by being mainly used for of drilling rod, and is lifted with drill bit and carried
High, reduction rotates bottom outlet device.Drilling rod allows for bearing huge interior external pressure, distortion, bending and vibration.With common steel
Drilling rod ratio, the advantage such as the density of aluminium drill pipe is low, specific strength is high, corrosion resisting property is good is so that its application is more and more extensive.But
It is that aluminium drill pipe hardness is low, during drilling, barite, Iron Ore Powder in the borehole wall, sleeve pipe and drilling fluid etc. can lead
Cause the worn down of aluminium drill pipe.Wherein drilling rod accounts for main aspect with the abrasion of sleeve pipe and the borehole wall, and which greatly limits it should
With popularization.At present conventional aluminum alloy surface strengthening method mainly has anodizing, differential arc oxidation, CVD, PVD etc., can obtain
Higher strengthening layer.The method of this overall reinforcing is not only easily thinning to sleeve pipe generation, and the low intensity of matrix, is being subject to
During slightly larger load, strain incompatibility is also easy to produce cracking, comes off between strengthening layer and matrix.
The content of the invention
The invention solves the problems that a technical problem be to provide that a kind of case hardness is high, wearability is good with bionic coupling
The aluminium alloy on surface.
In order to solve above-mentioned technical problem, the aluminium alloy with bionic coupling surface of the present invention, it is characterised in that described
Aluminium alloy is 7000 series alloys, and the Vickers hardness that its parent Surface Machining has bionical cell cube, bionical cell cube is
140HV25/10-190HV25/10, crystal grain is cellular crystal and column crystal, and crystallite dimension mean value is 5-30 microns.
The preparation method of the above-mentioned aluminium alloy with bionic coupling surface is as follows：
Using the method for laser melting, laser beam is scanned in aluminum alloy surface so that its surface melting is simultaneously fast
Rapid hardening is consolidated, and on its surface bionical cell cube is formed；The laser melting method adopts laser power for 300W, defocusing amount
11mm, laser frequency is 5HZ, and laser current 120-175mA, laser pulse width is 3-8ms, and laser scanning speed is 0.5-1mm/s
Laser beam.
The laser current is preferably 175mA, and laser pulse width is 3ms, and laser scanning speed is preferably the laser of 0.8mm/s
Light beam.
In order to solve above-mentioned technical problem, the aluminium alloy with bionic coupling surface of the present invention, it is characterised in that described
Aluminium alloy is 6000 series alloys, and the Vickers hardness that its parent Surface Machining has bionical cell cube, bionical cell cube is
130HV25/10-175HV25/10 crystal grain is cellular crystal and column crystal, and crystallite dimension mean value is 5～30 micronized forms.
The preparation method of the above-mentioned aluminium alloy with bionic coupling surface is as follows：
Using the method for laser melting, laser beam is scanned in aluminum alloy surface so that its surface melting is simultaneously fast
Rapid hardening is consolidated, and on its surface bionical cell cube is formed；The laser melting method adopts laser power for 300W, defocusing amount
11mm, laser frequency is 5HZ, and laser current 120-170mA, laser pulse width is 3-7ms, and laser scanning speed is 0.5-1mm/s
Laser beam.
The laser current is preferably 170mA, and laser pulse width is 7ms, and laser scanning speed is preferably the laser of 0.6mm/s
Light beam.
The present invention utilizes bionic principle, using the method for laser melting, prepare in aluminum alloy surface be uniformly distributed, crystal grain group
Knit the strip or the bionical cell cube such as latticed of refinement.Bionical cell cube can define the bionical object of soft and hard alternation with parent
Structure.Bionical cell cube after refinement not only causes its hardness to raise but also wear-resisting as added dowel pin in aluminum alloy surface
Bionical cell cube is surrounded and is connected by protective layer, fertile material so as to which the stress distribution on surface is more uniform, both synthesis
The hardness that enables aluminum alloy to of effect and wear resistance and toughness and tenacity are significantly improved.With in prior art in metal material
Surface makes bionical cell cube and compares, and it 7000 is to prepare bionical cell cube with 6000 line aluminium alloy surfaces that the present invention is, due to
Aluminium alloy is entirely different in composition, tissue, aspect of performance with other metal materials, it is impossible to will process the method for other metal materials
It is directly used in aluminium alloy.During bionical cell cube is prepared using laser melting method, if there is a laser parameter to select not
When also resulting in the failure of an experiment.Such as inventor once selected defocusing amount to be respectively the number such as 10mm, 11mm, 12mm, 13mm, 14mm
Value, and change other specification is tested under each defocusing amount value conditions, it is final to determine that selection defocusing amount is 11mm.Through near
Experiment in 1 year, repeatedly adjusting parameter, finally determines optimal laser parameter scope so that the bionical list of 7075 aluminium alloys
The Vickers hardness of first body has reached 140HV25/10-190HV25/10, and crystallite dimension mean value has reached 5-30 microns.
The invention solves the problems that Second Problem be to provide a kind of aluminium drill pipe with bionic coupling surface, the drilling rod
With high-strength tenacity Bionic wear-resisting top layer, compared with common aluminum alloy drilling rod, its hardness, anti-wear performance and service life are obtained
Effectively improve.
In order to solve the above problems, the aluminium drill pipe with bionic coupling surface of the present invention can adopt following four kinds
Technical scheme.
Technical scheme one：Prepared by the aluminium drill pipe surface have the bionical cell cube of helical, and the bionical cell cube of helical is bionical
Width is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm, angle of inclination is θ1, θ1It is=50 ° -60 °, adjacent
Vertical range between the bionical cell cube of helical is h1,h1=3.5-6.0mm.
Above-mentioned surface prepares the aluminium drill pipe for having the bionical cell cube of helical, and its bionical cell cube hardness can reach
140HV25/10-190HV25/10 is higher than drilling rod parent hardness 30%-70%；Yield strength can reach 582MPa～
630.5MPa, higher than drilling rod parent 20%-30%；Fracture elongation up to 15%-20%, higher than drill rod matrix 10%-60%；
Service life improves 1.3 times or so.The aluminium drill pipe is particularly suitable for the brill of loose ground, unconsolidated rock and close earth's surface
Visit.
Technical scheme two：Prepared by the aluminium drill pipe surface have the bionical cell cube of helical, and the bionical cell cube of helical is bionical
Width is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm, angle of inclination is θ1, θ1It is=35 ° -50 °, adjacent
Hanging down between the bionical cell cube of helical, straight distance is h1,h1=3.5-6.0mm.
Above-mentioned surface prepares the aluminium drill pipe for having the bionical cell cube of helical, and its bionical cell cube hardness can reach
140HV25/10-190HV25/10, higher than drilling rod parent hardness 30%-70% yield strength can reach 582MPa～
630.5MPa, higher than drilling rod parent 20%-30%；Fracture elongation up to 15%-20%, higher than drill rod matrix 10%-60%；
Service life improves 1.4 times or so.The aluminium drill pipe is particularly suitable for the sedimentary rocks such as sandstone, shale and positioned at drilling rod middle part
The probing of position.
Technical scheme three：Prepared by the aluminium drill pipe surface have latticed bionical cell cube, latticed bionical cell cube
It is made up of the bionical cell cube of cross one another A helicals and the bionical cell cube of B helicals, the bionical cell cube of A helicals and the bionical list of B helicals
The width of fringe of first body is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm；The bionical cell cube of A helicals is inclined
Angle is θ1, θ1=50 ° -57 °, the angle between the bionical cell cube of A helicals and the bionical cell cube of B helicals is θ2, θ2=30 °-
60°；The centre-to-centre spacing between centre-to-centre spacing and the bionical cell cube of adjacent B helicals between the bionical cell cube of adjacent A helicals is h2, h2
=3.5-6.0mm.
Above-mentioned surface prepares the aluminium drill pipe for having latticed bionical cell cube, and its bionical cell cube hardness can reach
140HV25/10-190HV25/10 is higher than drilling rod parent hardness 30%-70%；Yield strength can reach 582MPa-630.5MPa,
Higher than drilling rod parent 20%-30%；Fracture elongation is higher than drill rod matrix 10%-60% up to 15%-20%；Service life is carried
It is high 1.5 times or so.The aluminium drill pipe be particularly suitable for the slightly hard metamorphic rock such as marble, cobble and positioned at drilling rod middle part it is on the lower side
The probing of position.
Technical scheme four：Prepared by the aluminium drill pipe surface have latticed bionical cell cube, latticed bionical cell cube
It is made up of the bionical cell cube of cross one another A helicals and the bionical cell cube of B helicals, the bionical cell cube of A helicals and the bionical list of B helicals
The width of fringe of first body is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm；The bionical cell cube of A helicals is inclined
Angle is θ1, θ1=40 ° -50 °, the angle between the bionical cell cube of A helicals and the bionical cell cube of B helicals is θ2, θ2=30 °-
60°；The centre-to-centre spacing between centre-to-centre spacing and the bionical cell cube of adjacent B helicals between the bionical cell cube of adjacent A helicals is h2, h2
=3.5-6.0mm.
Above-mentioned surface prepares 7075 aluminium drill pipes for having latticed bionical cell cube, and its bionical cell cube hardness can reach
140HV25/10-190HV25/10, higher than drilling rod parent hardness 30%-70%；Yield strength can reach 582MPa-
630.5MPa, higher than drilling rod parent 20%-30%；Fracture elongation is higher than drill rod matrix 10%-60% up to 15%-20%；
Service life improves 1.6 times or so.The aluminium drill pipe is particularly suitable for the magmatic rocks such as granite, basalt and positioned at drilling rod
The probing of bottom position.
Above-mentioned four kinds of aluminium drill pipes are drilled suitable for Different Strata, can be according to different geographical stratum characteristic during practical application
It is combined.For example for certain region stratum is followed successively by loose dirt bed, sedimentary rock rock layers, metamorphic rock rock layers, rock by shallow and depth
Magmatic rock rock layers, first can be drilled with the 4th kind of aluminium drill pipe, after the drilling rod enters stratum, by the third aluminium drill pipe and the
Four kinds of aluminium drill pipes are connected, and continue probing downwards；Until four kinds of aluminium drill pipes are all connected, work is carried out together
Make.
This application of Laser Surface Treatment be present invention employs than wide, the method for more flexible economic and reliable is processing
Aluminium drill pipe surface, so that its obdurability is also effectively lifted while improve wearability.
The present invention prepares the bionical cell cube that grain structure refinement, hardness are higher than parent on aluminium drill pipe surface.Consider
To the position of stratum residing for drilling rod and brill time consuming, so the bionical cell cube of helical and network-like bionical cell cube are devised, and
By change bionical cell cube spacing and angle of inclination meeting demand.The invention enables the hardness on aluminium drill pipe surface,
Abrasion resistance properties and obdurability are significantly improved.It is of the invention simple to operate compared with traditional intensifying method, production efficiency
It is high, it is easy to accomplish automation, it is easy to popularization and application.
The preparation method of the above-mentioned aluminium drill pipe with bionic coupling surface, comprises the steps：
Step one：Pre-grinding process and removing surface are carried out to aluminium drill pipe surface；
Step 2：Using the method for laser melting, laser beam is carried out on aluminium drill pipe surface along the track of setting
Scanning so that its surface melting and rapid solidification, formed on its surface be uniformly distributed, the bionical cell cube of grain structure refinement.
The aluminium drill pipe is 7000 series alloys, and laser melting method adopts laser power for 300W, out of focus
Amount 11mm, laser frequency is 5HZ, and laser current 120-175mA, laser pulse width is 3-8ms, and laser scanning speed is 0.5-1mm/
The laser beam of s.
The aluminium drill pipe is 6000 series alloys, and laser melting method adopts laser power for 300W, out of focus
Amount 11mm, laser frequency is 5HZ, and laser current 120-170mA, laser pulse width is 3-7ms, and laser scanning speed is 0.5-1mm/
The laser beam of s.
Aluminium drill pipe is relatively low due to hardness itself, and in use Jing often occurs worn down makes its service life big
It is big to reduce, wherein accounting for main aspect with the abrasion of the borehole wall and sleeve pipe.In order on the one hand improve aluminium drill pipe case hardness and
Wearability, on the other hand will not produce anti-attrition to sleeve pipe because of much higher hard again, and the present invention is by some superior bio knots in nature
Some successful experiences that the inspiration of structure and forefathers did, with reference to bionic theory, using the method for laser melting, in aluminium alloy table
Face prepares a kind of with high-strength tenacity, the structure of the soft and hard alternation of high-wearing feature.The present invention is prepared on aluminium drill pipe surface
Bionical cell cube defines the bionic coupling region of the bionical object structures of soft and hard alternation with its surface.Bionical unit after refinement
Body not only causes its hardness to raise, and cell cube on drilling rod surface as added dykes and dams to hinder rolling for sleeve pipe, is boring
Bar surface defines one layer of wear-resistant protective layer.And cell cube is surrounded and is connected by fertile material so as to the stress on surface point
Cloth is more uniform, and both comprehensive functions enable aluminum alloy to the hardness and wear resistance of drilling rod and are significantly improved, and extend
Its service life.The present invention have also been devised various shapes model while the case hardness and wearability of aluminium drill pipe is improved
Preferably match with sleeve pipe, and preparation process is simple, it is easy to popularization and application.
Description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 a are the overall appearance figures of the aluminium drill pipe that the bionical cell cube of helical exists with single size, and Fig. 1 b are helicals
The front view of the aluminium drill pipe that bionical cell cube exists with single size, Fig. 1 c are the expanded views of Fig. 1 b, and Fig. 1 d are in Fig. 1 b
The profile of drilling rod, Fig. 1 e are partial enlarged drawings at the I of Fig. 1 d.
Fig. 2 a are the overall appearance figures of the aluminium drill pipe that network-like cell cube exists with single size, and Fig. 2 b are Fig. 2 a
Expanded view, Fig. 2 c are the profiles of drilling rod in Fig. 2 a, and Fig. 2 d are partial enlarged drawings at the J of Fig. 2 c.
Fig. 3 is the overall distribution figure that drilling rod is used in the earth formation.
Specific embodiment
Biological evolution nearly tens hundreds of millions years, in very long biological evolution, biological constantly optimization structure, form, group
Knit to form optimal system to adapt to the change of environment.Traditional viewpoint thinks more smooth, and abrasion resistance properties can be better, with bionical
The continuous development of high-abrasive material, it is not smooth better to find.By observing dung beetle head, backboard, elytrum form
Relatively, the body surface for finding these animals has obvious abrasion resistant effect, in order to approach the simplicity of biological prototype and processing, grinds
Organism surface is reduced to several simple shapes such as convex closure, pit, ripple by the person of studying carefully.It is excellent why their body surface has
Performance, is mainly reflected in the result that multiple coupling units such as its body surface form, material, structure, flexibility interact.Their advantage master
Show：
1st, the structure that their body surface is formed all is a kind of a kind of state of soft and hard alternation；
2nd, the distribution of hard unit is not identical in their body surface；
3rd, the relative high rigidity of hard unit is all from its composition material or institutional framework difference with soft unit.It is this
Form, the combination of structure and composition material cause organism to have excellent mechanical property and wear resistance.
The present invention according to bionic theory, using the method for laser melting, by preparing not similar shape on aluminium drill pipe surface
The bionical cell cube of looks specifically bores time consuming and residing environment obtaining different hardness to better meet drilling rod.Institute
The cell cube of acquisition, similar to the hard unit of organism surface, grain structure is substantially refined and hardness, mechanical performance are superior to base
Body.And with the difference of model, the degree of grain refinement for being obtained and hardness difference, flexibility is high.
As shown in figure 3, stratum is typically by shallow and deep dirt bed loose successively, sedimentary rock rock layers, metamorphic rock rock layers, magmatic rock
Rock layers.
For loose dirt bed, the present invention prepares the bionical cell cube 12 of helical on the surface of aluminium drill pipe 11, and helical is bionical
The width of cell cube 12 is a1,a1=1.3-1.5mm；Depth is b1, b1=0.2-0.6mm, angle of inclination is θ1, θ1=50 ° -60 °,
Vertical range between the bionical cell cube of adjacent flights is h1,h1=5-6mm.
For sedimentary rock rock layers, the present invention is prepared on the surface of aluminium drill pipe 11 the bionical cell cube 12 of helical, and helical is imitated
Raw cell cube width is a1,a1=1.3-1.5mm；Depth is b1, b1=0.2-0.6mm, angle of inclination is θ1, θ1=35 ° -50 °,
Vertical range between the bionical cell cube of adjacent flights is h1,h1=3.5-5mm.
For metamorphic rock rock layers, the present invention is prepared on the surface of aluminium drill pipe 21 latticed bionical cell cube, latticed
Bionical cell cube is made up of the bionical cell cube 22 of cross one another A helicals and the bionical cell cube 23 of B helicals, the bionical unit of A helicals
The width of fringe of body 22 and the bionical cell cube 23 of B helicals is a1,a1=1.3-1.5mm；Depth is b1, b1=0.2-0.6mm；A spiral shells
The bionical angle of inclination of cell cube 22 of line is θ1, θ1=50 ° -57 °, between the bionical cell cube of A helicals and the bionical cell cube of B helicals
Angle is θ2, θ2=30 ° -60 °；Between centre-to-centre spacing and the bionical cell cube of adjacent B helicals between the bionical cell cube of adjacent A helicals
Centre-to-centre spacing be h2, h2=5-5.8mm.
For magma lithosphere, the present invention is prepared on aluminium drill pipe surface latticed bionical cell cube, latticed imitative
Raw cell cube is made up of the bionical cell cube of cross one another A helicals and the bionical cell cube of B helicals, the bionical cell cube of A helicals and B spiral shells
The width of fringe of the bionical cell cube of line is a1,a1=1.3-1.5mm；Depth is b1, b1=0.2-0.6mm；The bionical unit of A helicals
Body angle of inclination is θ1, θ1=40 ° -50 °, the angle between the bionical cell cube of A helicals and the bionical cell cube of B helicals is θ2, θ2=
30°-60°；The centre-to-centre spacing between centre-to-centre spacing and the bionical cell cube of adjacent B helicals between the bionical cell cube of adjacent A helicals is
h2, h2=3.8-5mm.
Embodiment 1
By taking 7075 aluminium drill pipes as an example, case hardness 110.3HV25/10 of 7075 aluminium alloys (adopts 25 kilograms, protects
Hold the hardness number for obtaining for 10 seconds), yield strength 485MPa, fracture elongation 14%, wearability.
7075 aluminium drill pipe surfaces prepare performance after bionical cell cube and are shown in Table 1, and using laser parameter 2 are shown in Table.
Table 1
Table 2
| Specimen coding | Defocusing amount/mm | Electric current/mA | Pulsewidth/ms | Sweep speed/mm/s | Frequency/HZ |
| 1 | 11 | 120 | 3 | 0.8 | 5 |
| 2 | 11 | 130 | 5 | 1 | 5 |
| 3 | 11 | 145 | 5 | 0.6 | 5 |
| 4 | 11 | 140 | 3 | 0.6 | 5 |
| 5 | 11 | 165 | 5 | 0.8 | 5 |
| 6 | 11 | 170 | 7 | 0.6 | 5 |
| 7 | 11 | 145 | 7 | 0.5 | 5 |
| 8 | 11 | 135 | 8 | 0.6 | 5 |
| 9 | 11 | 175 | 3 | 0.8 | 5 |
| 10 | 11 | 150 | 5 | 1 | 5 |
| 11 | 11 | 165 | 7 | 1 | 5 |
| 12 | 11 | 160 | 6 | 0.5 | 5 |
Embodiment 2
By taking 6082 aluminium drill pipes as an example, case hardness 103.5HV25/10 of 6082 aluminium alloys, yield strength 330MPa,
Fracture elongation 17%.
6082 aluminium drill pipe surfaces prepare performance after bionical cell cube and are shown in Table 3, and using laser parameter 4 are shown in Table, wherein resistance to
Mill property improve multiple be test in it is comprehensive chummy according to weight loss, also wear morphology；It is comprehensive that service life improves multiple
Hardness is closed, data are stretched, also wearability gets).
Table 3
Table 4
Claims (10)
1. a kind of aluminium alloy with bionic coupling surface, it is characterised in that the aluminium alloy is 7000 series alloys, it is female
Body surface face is machined with bionical cell cube, and the Vickers hardness of bionical cell cube is 140HV25/10-190HV25/10, and crystal grain is born of the same parents' shape
Brilliant and column crystal, crystallite dimension mean value is 5-30 microns.
2. the aluminium alloy with bionic coupling surface according to claim 1, it is characterised in that the bionical cell cube is adopted
Prepared with following methods：Using laser melting method, laser beam is scanned in aluminum alloy surface so that its surface melting
And rapid solidification, form bionical cell cube on its surface；The laser melting method adopts laser power for 300W, defocusing amount
11mm, laser frequency is 5HZ, and laser current 120-175mA, laser pulse width is 3-8ms, and laser scanning speed is 0.5-1mm/s
Laser beam.
3. the aluminium alloy with bionic coupling surface according to claim 2, it is characterised in that the laser current is
175mA, laser pulse width is 3ms, and laser scanning speed is the laser beam of 0.8mm/s.
4. a kind of aluminium alloy with bionic coupling surface, it is characterised in that the aluminium alloy is 6000 series alloys, it is female
Body surface face is machined with bionical cell cube, and the Vickers hardness of bionical cell cube is that 130HV25/10-175HV25/10 crystal grain is born of the same parents' shape
Brilliant and column crystal, crystallite dimension mean value is 5～30 micronized forms.
5. the aluminium alloy with bionic coupling surface according to claim 4, it is characterised in that the bionical cell cube is adopted
Prepared with following methods：Using the method for laser melting, laser beam is scanned in aluminum alloy surface so that melt on its surface
Change and rapid solidification, on its surface bionical cell cube is formed；The laser melting method adopts laser power for 300W, out of focus
Amount 11mm, laser frequency is 5HZ, and laser current 120-170mA, laser pulse width is 3-7ms, and laser scanning speed is 0.5-1mm/
The laser beam of s.
6. the aluminium alloy with bionic coupling surface according to claim 5, it is characterised in that the laser current is
170mA, laser pulse width is 7ms, and laser scanning speed is the laser beam of 0.6mm/s.
7. a kind of aluminium drill pipe with bionic coupling surface, it is characterised in that prepared by the aluminium drill pipe surface have helical
Bionical cell cube, the bionical width of the bionical cell cube of helical is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm,
Angle of inclination is θ1, θ1=50 ° -60 °, the vertical range between the bionical cell cube of adjacent flights is h1,h1=3.5-6.0mm.
8. a kind of aluminium drill pipe with bionic coupling surface, it is characterised in that prepared by the aluminium drill pipe surface have helical
Bionical cell cube, the bionical width of the bionical cell cube of helical is a1,a1=1.33-1.66mm；Depth is b1, b1=0.3-0.53mm,
Angle of inclination is θ1, θ1=35 ° -50 °, hanging down between the bionical cell cube of adjacent flights, straight distance is h1,h1=3.5-6.0mm.
9. a kind of aluminium drill pipe with bionic coupling surface, it is characterised in that prepared by the aluminium drill pipe surface have grid
The bionical cell cube of shape, latticed bionical cell cube is by the bionical cell cube of cross one another A helicals and the bionical cell cube structure of B helicals
Into the width of fringe of the bionical cell cube of A helicals and the bionical cell cube of B helicals is a1,a1=1.33-1.66mm；Depth is b1, b1
=0.3-0.53mm；The bionical cell cube angle of inclination of A helicals is θ1, θ1=50 ° -57 °, the bionical cell cube of A helicals and B helicals are imitative
Angle between raw cell cube is θ2, θ2=30 ° -60 °；Centre-to-centre spacing and adjacent B helicals between the bionical cell cube of adjacent A helicals
Centre-to-centre spacing between bionical cell cube is h2, h2=3.5-6.0mm.
10. a kind of aluminium drill pipe with bionic coupling surface, it is characterised in that prepared by the aluminium drill pipe surface have net
The bionical cell cube of trellis, latticed bionical cell cube is by the bionical cell cube of cross one another A helicals and the bionical cell cube structure of B helicals
Into the width of fringe of the bionical cell cube of A helicals and the bionical cell cube of B helicals is a1,a1=1.33-1.66mm；Depth is b1, b1
=0.3-0.53mm；The bionical cell cube angle of inclination of A helicals is θ1, θ1=40 ° -50 °, the bionical cell cube of A helicals and B helicals are imitative
Angle between raw cell cube is θ2, θ2=30 ° -60 °；Centre-to-centre spacing and adjacent B helicals between the bionical cell cube of adjacent A helicals
Centre-to-centre spacing between bionical cell cube is h2, h2=3.5-6.0mm.
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| CN114150309B (en) * | 2021-12-14 | 2023-08-29 | 长春工业大学 | Aluminum-based metal bionic surface containing pinning structure strengthening layer and preparation method thereof |
| CN114603104A (en) * | 2022-03-15 | 2022-06-10 | 长春工程学院 | Die-casting punch with composite bionic coupling structure and machining method thereof |
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