CN110189874A - A kind of preparation method of the insulator based on 3D printing technique - Google Patents
A kind of preparation method of the insulator based on 3D printing technique Download PDFInfo
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- CN110189874A CN110189874A CN201910453809.2A CN201910453809A CN110189874A CN 110189874 A CN110189874 A CN 110189874A CN 201910453809 A CN201910453809 A CN 201910453809A CN 110189874 A CN110189874 A CN 110189874A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
- B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
- B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
- H01B19/04—Treating the surfaces, e.g. applying coatings
Abstract
The invention belongs to increases material manufacturing technology fields, more particularly, to a kind of preparation method of insulator based on 3D printing technique.Include the following steps: that (1) carries out the 3D printing of insulator using Selective Laser Sintering, carry out 3D printing under the conditions of different print parameters settings, obtains several insulation submodels under the conditions of different print parameters；The print parameters include laser power, sweep speed and sweep span；(2) electric performance test is carried out to several insulation submodels under the conditions of the different print parameters setting of acquisition, the electric property includes AC breakdown strength, dc breakdown field strength, relative dielectric constant and volume resistivity；(3) corresponding 3D printing parameter is determined in the requirement of electric property in actual work according to insulator；(4) 3D printing for carrying out insulator using Selective Laser Sintering according to determining 3D printing parameter, obtains the insulator of mechanical performance and excellent electric properties.
Description
Technical field
The invention belongs to increases material manufacturing technology fields, more particularly, to a kind of insulator based on 3D printing technique
Preparation method.
Background technique
Insulator is the important component of overhead transmission line, and the conducting wire for transmitting electric energy is in high potential, and shaft tower is in
On the one hand ground potential, insulator make conducting wire and shaft tower electrically insulate, conducting wire are on the other hand made mechanically to be connected with shaft tower,
Insulator will bear the effect of the various mechanical forces such as wind load, the icing of conducting wire self weight and conducting wire.These active forces pass through insulator
Shaft tower is passed to, shaft tower still suffers from the gravity of insulator itself.Therefore insulator will meet electric property and mechanicalness simultaneously
It can both sides requirement.
In terms of electric property, insulator still suffers from the behaviour of transient state other than bearing the effect of long-term work voltage
Make the effect of overvoltage and lightning surge, it is desirable that insulator should be able to bear the effect of these voltages, insulation breakdown not occur, no
Edge flashing occurs, can not damage；In mechanical properties, it is desirable that insulator can be steady under the effect of long-term mechanical load
It is fixed reliably to work, while requiring also have preferable ability to bear to hurricane and earthquake.To insulator in addition to electric property and machine
Outside the requirement of tool aspect of performance, insulator is also required to have preferable weather resistance and anti-aging property.It is required that insulator can be resisted
Sleet frost, exposing to the weather, in freezing winter and in sultry summer, can reliablely and stablely work, and should have tens under various adverse weather conditions
The service life in year.
The super-pressure greatly developed in recent years, extra-high voltage AC and DC transmission system, the requirement to suspension insulator is increasingly
The insulation system of height, design also becomes increasingly complex, if processed using traditional handicraft, needs by " mud-forming-glazing-processed
Firing-porcelain piece inspection-assembling " etc. forms (wet process technique) until finished product packing, and beveled structure is flexible and changeable, production process
Lengthy and tedious complexity, the higher suspension insulator of some complexities can not also be completed with mold.Therefore, traditional manufacturing technique is gradually
It is unable to satisfy the demand of people.
And recent decades, 3D printing are quickly grown, technology is also more and more mature.3D printing technique is also referred to as increasing material manufacturing skill
Art is based on three-dimensional CAD model data, and by adhesive materials such as powdered high molecular material or filament-type plastics, successively printing comes
Construct object.Currently, 3D printing technique is with photocuring technology (SLA), Selective Laser Sintering (SLS), fusion sediment skill
Based on art (FDM) etc..Compared to traditional insulator manufacturing technology, 3D printing technique can easily produce various complicated knots
The insulator of structure, this is that traditional manufacturing technology is unable to handle.Therefore, it is each to print shape to can use 3D printing technique for we
Different suspension insulator.
However, existing 3D printing technique is concerned only with the mechanical performance of printed product, rarely has the electrical resistance of concern printed product
Energy.And electric property is most important for insulator.Corresponding requirements are not achieved in line insulator electric property, will lead to defeated
Electric line break down, can not power transmission, serious person will lead to insulator fever explosion, cause serious electrical accident.From 20th century
At the beginning of the eighties to 21 century, topical regional and large area blackout totally 68 occur for China's power grid, wherein 32 are by exhausted
Caused by edge pollution flashover, Zhan always power failure number 47%.Therefore in order to improve the electric property of 3D printing insulator, it is suitable to find out
Print parameters, to meet electric property required for insulator.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of insulation based on 3D printing technique
Son preparation method, by fully considering influence of the 3D printing parameter to insulator electric property, by testing laser power,
The influence of sweep speed and sweep span to the disruptive field intensity of insulator and relative dielectric constant determines print parameters, thus
The bad technical problem of the insulator electric property that the solution prior art is prepared based on 3D printing technique.
To achieve the above object, according to one aspect of the present invention, a kind of insulator based on 3D printing technique is provided
Preparation method, include the following steps:
(1) condition is arranged in different print parameters in the 3D printing that insulator is carried out using Selective Laser Sintering
Lower carry out 3D printing obtains several insulation submodels under the conditions of different print parameters；The print parameters include laser function
Rate, sweep speed and sweep span；
(2) electric performance test is carried out to several insulation submodels under the conditions of the different print parameters setting of acquisition,
The electric property includes disruptive field intensity, relative dielectric constant and volume resistivity；
(3) corresponding 3D printing parameter is determined in the requirement of electric property in actual work according to insulator；
(4) 3D printing for being carried out insulator using Selective Laser Sintering according to determining 3D printing parameter, is obtained
Insulator.
Preferably, under the conditions of each group of identical print parameters setting, the insulation submodel that step (1) printing obtains is at least
It is 3.
Preferably, step (3) determine 3D printing parameter are as follows: laser power be 8~12W, sweep speed be 3000~
4000mm/s, sweep span are 0.1~0.3mm.
Preferably, the 3D printing parameter that step (3) determines are as follows: laser power 9W, sweep speed 3000mm/s, scanning
Spacing is 0.1mm.
Preferably, using nylon powder as substrate, the 3D printing of the insulator is carried out.
Preferably, the preparation method, further comprises the steps of:
(5) surface polishing treatment is carried out to obtained insulator, obtains the insulator of surface polishing.
Preferably, the preparation method, further comprises the steps of:
(6) Hydrophobic Coatings are applied to the insulator surface of the surface polishing, makes the insulator that there is hydrophobicity.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) influence of the electric property of present invention insulator as made from being printed with 3D printing technique print parameters air exercise,
Selection determines suitable print parameters, and then prints and obtain the insulator of excellent electric properties.Compared with prior art, it sufficiently examines
Influence of the 3D printing process to insulator electric property is considered, the insulator being prepared has more compared with the existing technology
For excellent electric property.
(2) present invention prepares insulator, SLS 3D printing skill using selection laser sintering technology SLS3D printing technique printing
Art sintering energy is big, powder sintered comparatively dense, and molded part intensity is high, and the present invention selects the higher SLS printing of molded part intensity
Technology prints insulator, can be made the insulator that mechanical performance is met the requirements.
(3) preparation method of the insulator provided by the invention based on 3D printing technique is used not only for printing insulator
Fitting, insulator overall structure can print to obtain by means of the present invention.
(4) influence the present invention is based on print parameters to electric property determines 3D printing parameter, can be adapted for different electricity
The printing of the insulator of gas performance requirement, the printing of insulator higher for electrical performance demands, also can be very easy
Corresponding print parameters are obtained, so that the insulator for meeting particular requirement be prepared.
(5) the present invention provides a kind of technical thought of completely new 3D printing insulator, the insulator being prepared is not only
Mechanical performance is excellent, and has fully considered the influence of the insulator electric property of 3D printing process, has both machine to obtain
The insulator 3D printing manufacture of tool performance and electric property provides new idea and method.
Detailed description of the invention
Fig. 1 is the preparation method flow chart of the insulator the present invention is based on 3D printing technique；
Fig. 2 is the 3D printing device figure that the embodiment of the present invention 1 prints insulator；
Fig. 3 is 1 straight fluid breakdown test electrode structural chart of the embodiment of the present invention；
Fig. 4 is 1 dc breakdown field strength measurement system diagram of the embodiment of the present invention；
Fig. 5 is 1 dc breakdown field strength of the embodiment of the present invention-laser power figure；
Fig. 6 is 1 wideband dielectric of the embodiment of the present invention and impedance spectrometer measurement system diagram；
Fig. 7 be the embodiment of the present invention 1 1MHz under laser energy density and relative dielectric constant relationship；
Fig. 8 is the experimental principle figure that the embodiment of the present invention 1 measures volume resistivity；
Fig. 9 is the connection schematic diagram of 1 sample and electrode of the embodiment of the present invention；
Figure 10 is 1 volume resistivity of the embodiment of the present invention-laser power figure；
Figure 11 is that the embodiment of the present invention 1 prints obtained insulation sub-pictures.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
A kind of preparation method of insulator based on 3D printing technique provided by the invention, includes the following steps:
(1) condition is arranged in different print parameters in the 3D printing that insulator is carried out using Selective Laser Sintering
Under insulator 3D model is printed, the print parameters include laser power, sweep speed and sweep span；It obtains different
Several insulation submodels under the conditions of print parameters setting；
(2) electric performance test is carried out to several insulation submodels under the conditions of the different print parameters setting of acquisition,
The electric property includes disruptive field intensity, relative dielectric constant and volume resistivity；
(3) corresponding 3D printing parameter is determined in the requirement of electric property in actual work according to insulator；
(4) 3D printing for being carried out insulator using Selective Laser Sintering according to determining 3D printing parameter, is obtained
Insulator.
For the 3D printing parameter of the insulator of more accurate acquisition excellent electric properties, the difference that step (1) obtains
Insulation submodel under the conditions of print parameters setting is at least 10.In order to avoid experimental error, each group of identical printing ginseng
Under the conditions of number setting, the insulation submodel that step (1) printing obtains is at least 3.
The 3D printing parameter determined according to the electrical performance demands of setting, step (3) are as follows: laser power is 8~12W, is swept
Retouching rate is 3000~4000mm/s, and sweep span is 0.1~0.3mm.
Under preferred embodiment, 3D printing parameter are as follows: laser power 9W, sweep speed 3000mm/s, sweep span are
Corresponding to obtain electric property highest when 0.1mm, wherein the dc breakdown voltage of insulator is 81.57kV/mm, alternating current breakdown electricity
Pressure is 42.96kV/mm, and the relative dielectric constant under 1MHz is 3.4, and volume resistivity is 22G Ω m.
Selective Laser Sintering (SLS technology) uses laser sintering technology, and sintering energy is big, powder sintered more to cause
Close, molded part intensity is high, and insulator has higher requirement to mechanical performance, and the present invention selects the higher SLS of molded part intensity to beat
Print technology prints insulator.
Fusing point of the printed material that SLS printing technique requires with fixation, and the material as insulator, need to have one
Fixed insulation performance.Comprehensively consider, the present invention selects using nylon powder to be substrate, carries out the 3D printing of the insulator.It can
To select the nylon powder of various models, such as can be using 12 powder of nylon as printed material.
Traditional composite electric insulator core bar is made of epoxy resin and glass fibre, and the machinery for being primarily subjected to transmission line of electricity is answered
Power, such as tensile stress, bending stress；Full skirt mainly has silicon rubber composition, is primarily subjected to the electric field stress of transmission line of electricity, such as resistance to
Compressive Strength, edge flashing etc..As it can be seen that it is sufficiently large to guarantee that insulator full skirt in normal course of operation is able to bear as far as possible
Electric field strength, to guarantee that insulator will not generating body breakdown or edge flashing.Primary study is different during the experiment by the present invention
To the influence of insulator electric property under the conditions of print parameters, so that it is determined that suitable print parameters.
Electric property of the present invention includes disruptive field intensity, relative dielectric constant and volume resistivity, wherein puncturing
Field strength includes AC breakdown strength and dc breakdown field strength.
After obtaining suitable print parameters by means of the present invention, in some embodiments, step (4) is specifically according to as follows
The 3D printing of step progress insulator:
Insulator CAD model is converted into STL format by (4-1), is imported in computer.(4-2) is in piston-type work top
It is upper to use 12 powder of roller layer overlay nylon, powder is preheating to the fusion temperature of slightly below powder.(4-3) CO2 laser beam exists
Under the control of computer, according to the information of cross section profile, powder is scanned.Powder temperature rises to melting point, powder particle
Fusing, is mutually bonded, that is, is sintered；Not scanned region, powder or loose condition (of surface), as powder and next layer of workpiece
Support.After (4-4) scans through one layer, pistons work platform declines the height of a layer cross section layer, then carries out next layer of powdering and sintering,
So circulation, eventually forms insulator.(4-5) removes excessive powder, obtains insulator.
In some embodiments, after insulator is prepared using the above method in the present invention, after also carrying out surface to insulator
Processing, further comprises the steps of:
(5) surface polishing treatment is carried out to obtained insulator, obtains the insulator of surface polishing.
(6) Hydrophobic Coatings are applied to the insulator surface of the surface polishing, makes the insulator that there is hydrophobicity, made absolutely
Edge has smooth surface and certain hydrophobicity.
The following are embodiments:
Embodiment 1
A kind of preparation method of the insulator based on 3D printing technique, as shown in Figure 1, including the following steps:
(1) select molded part intensity higher selectivity laser sintering technology as printing technique；
(2) material of insulation performance required for definite melting point required for SLS technology and insulator is selected while meeting,
That is nylon 12；
(3) item is arranged in different print parameters in the 3D printing that test sample is carried out using Selective Laser Sintering
Test sample is printed under part, the print parameters include laser power, sweep speed and sweep span；Difference is obtained to beat
Print the insulator model sample under the conditions of parameter setting；
The 3D printing of insulation submodel, laser power setting are carried out using selective laser sintering device as shown in Figure 2
For 3~42W range, sweep speed is set as 3000~4000mm/s range, and sweep span is set as 0.1~0.3mm range, often
One group of print conditions prints 3 insulator model samples；
(4) electric performance test, institute are carried out to the insulator model sample under the conditions of the different print parameters setting of acquisition
Stating electric property includes AC breakdown strength, dc breakdown field strength, volume resistivity and relative dielectric constant.
Wherein, in disruptive field intensity of the testing laser power to impression block pattern product, the dc breakdown electricity of 3D printing sample
Pressing experimental enviroment condition is 15 ± 2 DEG C, relative humidity (50 ± 5) %.Since the voltage of application is higher, tested in air
When be easy to produce edge flashing and violent corona discharge, therefore test and carried out in there is the silicone oil compared with high electric strength.Using
High voltage direct current generator is as voltage output, and testing equipment is damaged since breakdown causes current or voltage to fluctuate in order to prevent,
It connects in the loop with sample protective resistance.The electrode form used when measuring its body disruptive field intensity is as shown in Figure 3.
The system of the measurement disruptive field intensity of design is as shown in Figure 4.In Fig. 4, high voltage direct current generator is for generating high pressure；It protects
The effect of shield resistance be in order to prevent insulation breakdown when electric current is excessive leads to equipment damage, R=10M Ω；The model of divider is
SGB-100B, no-load voltage ratio 1000:1, input impedance are 640M Ω, and effect is the virtual voltage for measuring sample both ends.By test product and
Electrode is integrally put into oil cylinder.
Different laser power samples measure 6 groups of dc breakdown voltages, pass through dc breakdown voltage and sample actual (real) thickness
Ratio, acquires dc breakdown field strength, and experimental result is as shown in Figure 5.
As shown in Figure 5, the dc breakdown field strength of sample is with the changing rule of laser energy density and the changing rule of density
It is similar.When laser energy density is too small, sample porosity is big, and internal flaw and hole are more, dc breakdown field strength very little；When
Laser energy density reaches 0.03J/mm2When, the porosity of sample is minimum, disruptive field intensity highest, average value 81.57kV/mm,
About 88.7% (theoretical value 92kV/m) of theoretical value；In 0.03~0.06J/mm2In range, the dc breakdown field strength of sample
It is declined slightly, this is primarily due to laser power increase, causes the thickness of sintered sample to increase, when laser energy density reaches
0.06J/mm2When, thickness of sample is about 2mm, and the dc breakdown field strength of sample reduces with the increase of thickness of sample；Work as laser
Energy density is greater than 0.06J/mm2When, sample has begun generation thermal oxidative degradation, and thickness of sample is severely deformed, deformation
Main cause is that the excessively high intensity in transmission for leading to laser of laser energy is excessively high, when being sintered first layer powder, produces excessive Z
Axis " surplus ".From the aspect of dc breakdown field strength, optimal laser energy density is 0.03J/mm2, corresponding laser power
For 9W.
The dc breakdown field strength of molded samples is mainly influenced by its porosity size, and density is bigger, and disruptive field intensity is higher.
Increasing laser power can be such that powder is preferably sintered, and improve the density of molded samples, but excessively high laser power input can make
Dusty material overheat, brings following problem:
(a) thermal oxide for aggravating dusty material causes molded samples discoloration, penalty, when local temperature is more than to decompose
When temperature, nylon powder generates intensive decomposition, and molded samples performance further deteriorates.
(b) temperature gradient of the nylon powder material under laser beam irradiation and its surrounding powder material increases, and causes to form
Sample generates buckling deformation.
(c) heat transfer effect causes the powder outside laser beam flying region to be attached on molded part, loses molded samples clearly
Clear profile, influences precision.
In influence of the testing laser power to relative dielectric constant, used in the measurement of 3D sample relative dielectric constant
Equipment is Novocontrol wideband dielectric and impedance spectrometer, and test macro Concept40 has extremely wide frequency measurement model
Enclose (3 μ Hz-3GHz).The system is mainly made of four parts, i.e., software section, signal generation point, temprature control unit and
Other hardware components, as shown in Figure 6.
Dielectric spectrometry is carried out to 3D printing material by Novocontrol wideband dielectric and impedance spectrometer, it is specific to test
Process is as follows:
(1) alcohol wipe test product surface is used, the filth on surface is removed；
(2) sample is put into sample frame, and deposited in test cavity；
(3) ac voltage signal amplitude is set, and the voltage effective value that this test is chosen is 1V；
(4) frequency range of the broadband dielectric spectroscopy measured needed for setting, the frequency range that this test is chosen are as follows: 0.1Hz-
1MHz；
(5) start to test.
Relative dielectric constant of the sample under 1MHz frequency under different laser powers is measured, is averaged, experimental result is such as
Shown in Fig. 7.
Experiment discovery, when laser energy density is lower, powder sintered incomplete, degree of polarization is weaker；With laser energy
Amount improves (0.017~0.08J/mm2), powder is fully sintered, and forms interfacial polarization, relative dielectric constant range is about 3.2
~3.5 (theoretical values 3.8)；But as laser energy continues growing, oxidative degradation occurs for sample, and degradation product is further with nylon
Interfacial polarization is formed, relative dielectric constant is caused to increase with the increase of laser energy density.Therefore, from relative dielectric constant
From the aspect of, optimal laser energy density range is 0.017~0.08J/mm2, corresponding laser power is 5~18W.
In influence of the testing laser power to volume resistivity, with reference in standard GB/T 1410-78 about solid electricity
Work insulated with material resistance, volume resistivity and surface resistivity test method consider that edge flashing and corona discharge tie test
The influence of fruit, choosing test voltage is respectively 4kV, 5kV, 6kV, 7kV, 8kV and 9kV, by DC break down voltage tester as output
Voltage source.The measurement common method of high resistance is to be acquired by the electric current for measuring the DC voltage being added on sample and flowing through sample
Sample resistance.The measurement method of volume resistivity is as shown in Figure 8.
In Fig. 8, use Keithley 6517B electrometer as current measurement module；Resistance R is protective resistance, protection electricity
Hinder R=2M Ω；Electrode material is to be applied to the conductive material of specimen surface for improving contact of the metal block electrode with sample,
Using conductive silver glue, specimen surface is carefully brushed by the electrode shape of defined；The effect of anti-leak electrode is prevented along face
The influence to current measurement is revealed, as shown in Figure 9.
Every kind of laser power sample measures 3 groups of volume resistivities respectively, is averaged, experimental result is as shown in Figure 10.By
Figure 10 it is found that the corresponding sample of 3W volume resistivity highest, but due to 3W printing sample absorption energy it is very little, cause to deposit
In a large amount of un-sintered powder, and it is frangible, therefore, it is not suitable for practical application.And by previous experiments it is found that when laser power is more than
When 24W, sample surfaces have turned yellow, and oxygenolysis have occurred, therefore be not also available.When laser power range 5~18W it
Between, the volume resistivity of molded samples does not vary widely, and can be used as insulator and is applied in practice.
Using PA12 powder as substrate, influence of the technological parameter to molded part electric property is had studied, is only changing laser function
Under the premise of rate, technological parameter is had studied to electric property (dc breakdown field strength, volume resistivity, the opposite dielectric of molded part
Constant) influence, obtain optimal combination of process parameters be sweep span 0.1mm, scanning speed 3000mm/s, laser power
9W, corresponding laser energy density are 0.03J/mm2。
(5) by the electric performance test of test sample, optimal printing parameter, i.e. sweep span 0.1mm, scanning speed are determined
Spend 3000mm/s, laser power 9W；The dc breakdown voltage of corresponding insulator is 81.57kV/mm, ac breakdown voltage at this time
For 42.96kV/mm, the relative dielectric constant under 1MHz is 3.4, and volume resistivity is 22G Ω m.
(6) according to determining print parameters, insulator is printed using selective laser sintering device as shown in Figure 2；Tool
Body step are as follows: insulator CAD model is converted into STL format by (6-1), is imported in computer.(6-2) is in piston-type work top
It is upper to use 12 powder of roller layer overlay nylon, powder is preheating to the fusion temperature of slightly below powder.(6-3) CO2 laser beam exists
Under the control of computer, according to the information of cross section profile, powder is scanned.Powder temperature rises to melting point, powder particle
Fusing, is mutually bonded, that is, is sintered；Not scanned region, powder or loose condition (of surface), as powder and next layer of workpiece
Support.After (6-4) scans through one layer, pistons work platform declines the height of a layer cross section layer, then carries out next layer of powdering and sintering,
So circulation, eventually forms insulator.(5) excessive powder is removed, insulator is obtained.
(7) insulator is post-processed, including surface polishing and painting Hydrophobic Coatings, makes insulator that there is smooth table
Face and certain hydrophobicity.
It is first once polished with surface of the biggish sand paper of roughness to the insulator, then with the lesser sand of roughness
Paper carries out secondary polishing to insulator, keeps insulator surface smooth.Then one layer is uniformly coated in the insulator surface to hate
Water paint, to improve its hydrophobicity.Last gained insulator is as shown in figure 11.
According to the method described above, can obtain the corresponding print parameters range of the more excellent insulator of electric property is laser
Power is 8~12W, and sweep speed is 3000~4000mm/s, and sweep span is 0.1~0.3mm.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of preparation method of the insulator based on 3D printing technique, which comprises the steps of:
(1) 3D printing that insulator is carried out using Selective Laser Sintering, under the conditions of different print parameters setting into
Row 3D printing obtains several insulation submodels under the conditions of different print parameters；The print parameters include laser power, sweep
Retouch rate and sweep span；
(2) electric performance test is carried out to several insulation submodels under the conditions of the different print parameters setting of acquisition, it is described
Electric property includes disruptive field intensity, relative dielectric constant and volume resistivity；
(3) corresponding 3D printing parameter is determined in the requirement of electric property in actual work according to insulator；
(4) 3D printing for being carried out insulator using Selective Laser Sintering according to determining 3D printing parameter, is insulated
Son.
2. preparation method as described in claim 1, which is characterized in that under the conditions of each group of identical print parameters setting, step
Suddenly the insulation submodel that (1) printing obtains is at least 3.
3. preparation method as claimed in claim 1 or 2, which is characterized in that the 3D printing parameter that step (3) determines are as follows: laser
Power is 8~12W, and sweep speed is 3000~4000mm/s, and sweep span is 0.1~0.3mm.
4. preparation method as described in claim 1, which is characterized in that the 3D printing parameter that step (3) determines are as follows: laser power
For 9W, sweep speed 3000mm/s, sweep span 0.1mm.
5. preparation method as described in claim 1, which is characterized in that using nylon powder as substrate, carry out the insulator
3D printing.
6. preparation method as described in claim 1, which is characterized in that further comprise the steps of:
(5) surface polishing treatment is carried out to obtained insulator, obtains the insulator of surface polishing.
7. preparation method as claimed in claim 6, which is characterized in that further comprise the steps of:
(6) Hydrophobic Coatings are applied to the insulator surface of the surface polishing, makes the insulator that there is hydrophobicity.
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| CN201910453809.2A CN110189874A (en) | 2019-05-28 | 2019-05-28 | A kind of preparation method of the insulator based on 3D printing technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590072A (en) * | 2019-09-26 | 2020-08-28 | 成都雍熙聚材科技有限公司 | Method and device for controlling solidification structure of metal part through electric field-magnetic field coupling and additive manufacturing |
| CN112776328A (en) * | 2021-01-29 | 2021-05-11 | 云南电网有限责任公司电力科学研究院 | Manufacturing system and method for functionally graded insulation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254647A (en) * | 2011-05-12 | 2011-11-23 | 清华大学 | Composite insulating material and preparation method thereof |
| CN103280280A (en) * | 2013-04-25 | 2013-09-04 | 西北核技术研究所 | Method for improving flashover performance of vacuum edge surface of polymer insulator |
| CN104647760A (en) * | 2015-02-12 | 2015-05-27 | 华中科技大学 | 3D printing and manufacturing method of short-fiber reinforced thermosetting resin composite product |
| CN104916378A (en) * | 2015-06-18 | 2015-09-16 | 西安交通大学 | Device and method for manufacturing dielectric constant gradient insulator based on 3D printing |
| CN105321635A (en) * | 2015-09-25 | 2016-02-10 | 西安交通大学 | 3D printing-based manufacturing method for conductivity gradient polymer insulator |
| CN106782932A (en) * | 2016-12-28 | 2017-05-31 | 西北核技术研究所 | High gradient surface micro-strip insulator and preparation method thereof |
| CN108312545A (en) * | 2017-12-29 | 2018-07-24 | 网云（武汉）三维科技股份有限公司 | A kind of selective laser sintering part preprocess method |
-
2019
- 2019-05-28 CN CN201910453809.2A patent/CN110189874A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254647A (en) * | 2011-05-12 | 2011-11-23 | 清华大学 | Composite insulating material and preparation method thereof |
| CN103280280A (en) * | 2013-04-25 | 2013-09-04 | 西北核技术研究所 | Method for improving flashover performance of vacuum edge surface of polymer insulator |
| CN104647760A (en) * | 2015-02-12 | 2015-05-27 | 华中科技大学 | 3D printing and manufacturing method of short-fiber reinforced thermosetting resin composite product |
| CN104916378A (en) * | 2015-06-18 | 2015-09-16 | 西安交通大学 | Device and method for manufacturing dielectric constant gradient insulator based on 3D printing |
| CN105321635A (en) * | 2015-09-25 | 2016-02-10 | 西安交通大学 | 3D printing-based manufacturing method for conductivity gradient polymer insulator |
| CN106782932A (en) * | 2016-12-28 | 2017-05-31 | 西北核技术研究所 | High gradient surface micro-strip insulator and preparation method thereof |
| CN108312545A (en) * | 2017-12-29 | 2018-07-24 | 网云（武汉）三维科技股份有限公司 | A kind of selective laser sintering part preprocess method |
Non-Patent Citations (1)
| Title |
|---|
| 原红玲: "《快速制造技术及应用》", 31 January 2015, 航空工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590072A (en) * | 2019-09-26 | 2020-08-28 | 成都雍熙聚材科技有限公司 | Method and device for controlling solidification structure of metal part through electric field-magnetic field coupling and additive manufacturing |
| CN112776328A (en) * | 2021-01-29 | 2021-05-11 | 云南电网有限责任公司电力科学研究院 | Manufacturing system and method for functionally graded insulation |
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