CN109732089A - A kind of pure tungsten 3D printing increasing material manufacturing method - Google Patents
A kind of pure tungsten 3D printing increasing material manufacturing method Download PDFInfo
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- CN109732089A CN109732089A CN201910187279.1A CN201910187279A CN109732089A CN 109732089 A CN109732089 A CN 109732089A CN 201910187279 A CN201910187279 A CN 201910187279A CN 109732089 A CN109732089 A CN 109732089A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention provides a kind of pure tungsten 3D printing increasing material manufacturing method, belong to pure tungsten processing and manufacturing field, the specific steps are prepare pure tungsten thin slice for the pure tungsten 3D printing increasing material manufacturing method, cleaning, wiping, after drying, being handled printing substrate, after being mounted on the print platform of 3D printing equipment, preparing modeling work, modeling in 3D printing equipment, curved surface layering is carried out again, support, setting pure tungsten complex thin-wall component laser 3D printing parameter and post-processing are established, laser 3D printing pure tungsten complex thin-wall component is heat-treated.The present invention replaces traditional machining and powder metallurgy process using laser 3D printing manufacture tungsten and tungsten alloy part, can shorten the working hour of machining, saves processing cost, improves production efficiency；The disadvantage for overcoming prior powder metallurgy processing method process numerous, reduces being mixed into for impurity, and by the precision height of the part of laser 3D printing, formability is good and comprehensive mechanical property is high.
Description
Technical field
The invention belongs to pure tungsten processing and manufacturing technology more particularly to a kind of pure tungsten 3D printing increasing material manufacturing methods.
Background technique
Tungsten is the metal with body-centred cubic high-melting-point, high density, high rigidity, while because it is with high temperature resistant, corrosion resistant
Erosion, the features such as thermal expansion coefficient is small, and the neck such as be widely used in aerospace, metallurgical industry, military equipment, electronics and chemical industry
Domain.Since the fusing point of tungsten and tungsten alloy is high, the biggish material property of surface tension restricts, tungsten and tungsten alloy laser 3D printing are restricted
The development of technology.During laser 3D printing, the interaction process of tungsten powder and laser is complicated, causes the forming of tungsten material difficult
In control, especially some more complex curved sheets parts can generate biggish stress in print procedure.
Pure tungsten part 3D printing process is the inverse process of tomoscan, i.e., is layered part, printing in layer, then
It is superimposed together, becomes a three-dimensional object.Pure titanium thin-wall curved-surface part laser 3D printing increases material manufacturing technology, is to pass through high energy
Laser beam successively melts pure titanium powder, and then realizes the manufacture of any pure titanium complex curved surface parts.The technology can both overcome biography
It is low that system subtracts material manufacture utilization rate of raw materials, and can refine crystal grain, so that formation of parts structural strength increases substantially.But due to swashing
During light increasing material manufacturing the features such as fast hot rapid cooling, high gradient Re-power-stream multi- scenarios method, so that existing in pure tungsten thin-walled parts
Higher internal stress, so that titanium thin-walled parts be made to be easily deformed.Discovery can be by adjusting the relevant parameter of laser scanning in research
Related stress is mitigated or eliminated with subsequent heat treatment, obtains the preferable pure tungsten thin-wall curved-surface part of quality.
Mechanical processing method and powder metallurgic method is mainly used to produce the processing of pure tungsten part at present.
But there is laser powers and print parameters to be difficult to determine for existing 3D printing manufacturing method, for thin-walled
Part is easy the problem shaken and the deformation amount controlling in deformation and print procedure, precision controlling are inaccurate.
Therefore, a kind of pure tungsten 3D printing increasing material manufacturing method is invented to be very necessary.
Summary of the invention
It is existing to solve in order to solve the above technical problem, the present invention provides a kind of pure tungsten 3D printing increasing material manufacturing method
3D printing manufacturing method there is laser powers and print parameters to be difficult to determine, for thin-walled parts be easy shake and become
The inaccurate problem of deformation amount controlling, precision controlling in shape and print procedure, a kind of pure tungsten 3D printing increasing material manufacturing method tool
Body the following steps are included:
Step 1: preparing pure tungsten thin slice, clears up, and wiping is dried: being prepared the pure tungsten thin slice of zone of reasonableness inside dimension, is taken one
Block sponge block immerses in antioxidant, waits the time in zone of reasonableness, takes out sponge block and is cleaned with water in pure tungsten sheet surface, with
After be placed on ventilation and dry；
Step 2: it after printing substrate is handled, is mounted on the print platform of 3D printing equipment: passing through folder when storing
Pure tungsten thin slice after son will dry is installed on print platform to be processed, keeps the planarization of pure tungsten thin slice；
Step 3: prepare modeling work in 3D printing equipment: creating complex-curved sheet part with UG three-dimensional software
Then threedimensional model file created so as to subsequent hierarchy processing and is established support with the export of STL format by threedimensional model；
Step 4: after modeling, then carrying out curved surface layering, establishes support: stl file derived in UG three-dimensional software is put into
Hierarchy slicing processing is carried out in Slice Software Materialise Magics；When layering, to be selected according to the size and shape of part
The some wedge angles and transition portion for selecting the thickness in zone of reasonableness, especially part want emphasis to consider；For complex-curved thin plate
For part, part generates biggish internal stress in order to prevent and deformation also needs to add corresponding portion support, by layered shaping
It supports later model with the export of STL format with establishing, pure tungsten thin slice is scanned, so as to can will be related in print procedure
Pre-treatment information is converted into the identifiable G language of 3D printer；
Step 5: setting pure tungsten complex thin-wall component laser 3D printing parameter: filling scan power: 450W；Filling scanning
Speed: 500mm/s；Fill scan line gap: 0.05mm；Profile scan power: 320W；Profile scan speed: 600mm/s；Chess
Disk lattice vector number/size: 8 × 8；Cheque board scan power: 450W (filling power), 320W (profile scan power)；Gridiron pattern
Scanning speed: 500mm/s (filling scanning speed), 300mm/s (profile scan speed)；Gridiron pattern fills scan line gap:
0.06mm；Interlayer rotation angle: 67 °；
Step 6: post-processing is heat-treated laser 3D printing pure tungsten complex thin-wall component: printed pure tungsten is answered
Miscellaneous thin-walled parts are placed in vacuum heat treatment furnace, and heat preservation, furnace cooling is taken out air-cooled.
Preferably, in step 1, the antioxidant uses tea polyphenols agent, and the one of tocopherol agent or flavones agent
Kind.
Preferably, in step 1, the flash-off time is set as 35min to 40min.
Preferably, in step 4, the supporting way uses mesh-supported mode.
Preferably, in step 4, the slice thickness is 0.03mm-0.032mm.
Preferably, in step 4, the scanning mode is set as chessboard scanning mode.
Preferably, in step 6, the vacuum heat treatment furnace temperature setting is 950 DEG C to 1200 DEG C.
Preferably, in step 6, the holding temperature is set as 2h to 3h.
Preferably, in step 6, the furnace cooling temperature setting is 240 DEG C to 245 DEG C.
Preferably, in step 6, the cooling velocity is set as 28 DEG C/h to 30 DEG C/h.
Preferably, in step 6, the vacuum degree is greater than 10-1Pa。
Compared with prior art, the invention has the following beneficial effects: increase material due to a kind of pure tungsten 3D printing of the invention
Manufacturing method is widely used in pure tungsten processing and manufacturing technology.The present invention is using laser 3D printing manufacture tungsten and tungsten alloy part
Instead of traditional machining and powder metallurgy process, the working hour of machining can be shortened, save processing cost, improve production
Efficiency；The disadvantage for overcoming prior powder metallurgy processing method process numerous, reduces being mixed into for impurity, in addition, laser 3D printing belongs to
The process of anxious hot rapid cooling, can refine the crystal grain of part, so, the high, formability by the precision of the part of laser 3D printing
Good and comprehensive mechanical property is high.
Detailed description of the invention
Fig. 1 is pure tungsten 3D printing increasing material manufacturing method flow diagram.
Specific embodiment
The present invention is described further below in conjunction with attached drawing:
In figure:
As shown in Fig. 1
A kind of pure tungsten 3D printing increasing material manufacturing method specifically includes the following steps:
S101: preparing pure tungsten thin slice, clears up, and wiping is dried: being prepared the pure tungsten thin slice of zone of reasonableness inside dimension, is taken one piece
Sponge block immerses in antioxidant, waits the time in zone of reasonableness, takes out sponge block and is cleaned with water in pure tungsten sheet surface, then
Ventilation is placed on to dry；
S102: it after printing substrate is handled, is mounted on the print platform of 3D printing equipment: passing through clip when storing
Pure tungsten thin slice after drying is installed on print platform to be processed, keeps the planarization of pure tungsten thin slice；
S103: prepare modeling work in 3D printing equipment: creating the three of complex-curved sheet part with UG three-dimensional software
Then threedimensional model file created so as to subsequent hierarchy processing and is established support with the export of STL format by dimension module；
S104: after modeling, then carrying out curved surface layering, establishes support: stl file derived in UG three-dimensional software being put into and is cut
Hierarchy slicing processing is carried out in piece software Materialise Magics；When layering, to be selected according to the size and shape of part
The some wedge angles and transition portion of thickness in zone of reasonableness, especially part want emphasis to consider；For complex-curved thin plate zero
For part, part generates biggish internal stress in order to prevent and deformation also needs to add corresponding portion support, by layered shaping with
It establishes and supports later model with the export of STL format, pure tungsten thin slice is scanned, so as to can will be before correlation in print procedure
Processing information is converted into the identifiable G language of 3D printer；
S105: setting pure tungsten complex thin-wall component laser 3D printing parameter: filling scan power: 450W；Filling scanning speed
Degree: 500mm/s；Fill scan line gap: 0.05mm；Profile scan power: 320W；Profile scan speed: 600mm/s；Chessboard
Lattice vector number/size: 8 × 8；Cheque board scan power: 450W (filling power), 320W (profile scan power)；Gridiron pattern is swept
Retouch speed: 500mm/s (filling scanning speed), 300mm/s (profile scan speed)；Gridiron pattern fills scan line gap:
0.06mm；Interlayer rotation angle: 67 °；
S106: post-processing is heat-treated laser 3D printing pure tungsten complex thin-wall component: printed pure tungsten is complicated
Thin-walled parts are placed in vacuum heat treatment furnace, and heat preservation, furnace cooling is taken out air-cooled.
Preferably, in S101, the antioxidant uses one kind of tea polyphenols agent, tocopherol agent or flavones agent.
Preferably, in S101, the flash-off time is set as 35min to 40min.
Preferably, in S104, the supporting way uses mesh-supported mode.
Preferably, in S104, the slice thickness is 0.03mm-0.032mm.
Preferably, in S104, the scanning mode is set as chessboard scanning mode.
Preferably, in S106, the vacuum heat treatment furnace temperature setting is 950 DEG C to 1200 DEG C.
Preferably, in S106, the holding temperature is set as 2h to 3h.
Preferably, in S106, the furnace cooling temperature setting is 240 DEG C to 245 DEG C.
Preferably, in S106, the cooling velocity is set as 28 DEG C/h to 30 DEG C/h.
Preferably, in S106, the vacuum degree is greater than 10-1Pa。
Example 1 is embodied:
1, prepare pure tungsten thin slice, clear up, wiping is dried: being prepared the pure tungsten thin slice with a thickness of 0.03mm, is taken one piece of sponge block
It immerses in antioxidant, waits the time in zone of reasonableness, take out sponge block and cleaned with water in pure tungsten sheet surface, is subsequently placed at
Ventilation is dried, and 35min is waited；
2, it after being handled printing substrate, is mounted on the print platform of 3D printing equipment: will by clip when storing
Pure tungsten thin slice after drying is installed on print platform to be processed, keeps the planarization of pure tungsten thin slice；
3, prepare modeling work in 3D printing equipment: creating the three-dimensional mould of complex-curved sheet part with UG three-dimensional software
Then threedimensional model file created so as to subsequent hierarchy processing and is established support with the export of STL format by type；
4, after modeling, then curved surface layering is carried out, establishes support: stl file derived in UG three-dimensional software is put into slice
Hierarchy slicing processing is carried out in software Materialise Magics；When layering, to select to close according to the size and shape of part
The thickness in range is managed, especially some wedge angles of part and transition portion wants emphasis to consider；For complex-curved sheet part
For, part generates biggish internal stress in order to prevent and deformation also needs to add corresponding portion support, by layered shaping and builds
The later model of vertical support is scanned pure tungsten thin slice with the export of STL format, so as to can will be before correlation in print procedure
Reason information is converted into the identifiable G language of 3D printer；
5, pure tungsten complex thin-wall component laser 3D printing parameter is set: filling scan power: 450W；Fill scanning speed:
500mm/s；Fill scan line gap: 0.05mm；Profile scan power: 320W；Profile scan speed: 600mm/s；Gridiron pattern to
Amount number/size: 8 × 8；Cheque board scan power: 450W (filling power), 320W (profile scan power)；Cheque board scan speed
Degree: 500mm/s (filling scanning speed), 300mm/s (profile scan speed)；Gridiron pattern fills scan line gap: 0.06mm；Layer
Between rotate angle: 67 °；
6, it post-processes, laser 3D printing pure tungsten complex thin-wall component is heat-treated: printed pure tungsten complexity is thin
Wall part is placed in vacuum heat treatment furnace, and vacuum degree is greater than 10-1Pa, furnace temperature are slowly increased to 950 DEG C to 1200 DEG C, and heat preservation 2h is extremely
3h is cooled down with 240 DEG C of furnace temperature and in such a way that cooling velocity is 28 DEG C/h, is then taken out air-cooled.
Example 2 is embodied:
1, prepare pure tungsten thin slice, clear up, wiping is dried: being prepared the pure tungsten thin slice with a thickness of 0.032mm, is taken one piece of sponge
Block immerses in antioxidant, waits the time in zone of reasonableness, takes out sponge block and is cleaned with water in pure tungsten sheet surface, is subsequently placed with
It is dried in ventilation, waits 40min；
2, it after being handled printing substrate, is mounted on the print platform of 3D printing equipment: will by clip when storing
Pure tungsten thin slice after drying is installed on print platform to be processed, keeps the planarization of pure tungsten thin slice；
3, prepare modeling work in 3D printing equipment: creating the three-dimensional mould of complex-curved sheet part with UG three-dimensional software
Then threedimensional model file created so as to subsequent hierarchy processing and is established support with the export of STL format by type；
4, after modeling, then curved surface layering is carried out, establishes support: stl file derived in UG three-dimensional software is put into slice
Hierarchy slicing processing is carried out in software Materialise Magics；When layering, to select to close according to the size and shape of part
The thickness in range is managed, especially some wedge angles of part and transition portion wants emphasis to consider；For complex-curved sheet part
For, part generates biggish internal stress in order to prevent and deformation also needs to add corresponding portion support, by layered shaping and builds
The later model of vertical support is scanned pure tungsten thin slice with the export of STL format, so as to can will be before correlation in print procedure
Reason information is converted into the identifiable G language of 3D printer；
5, pure tungsten complex thin-wall component laser 3D printing parameter is set: filling scan power: 450W；Fill scanning speed:
500mm/s；Fill scan line gap: 0.05mm；Profile scan power: 320W；Profile scan speed: 600mm/s；Gridiron pattern to
Amount number/size: 8 × 8；Cheque board scan power: 450W (filling power), 320W (profile scan power)；Cheque board scan speed
Degree: 500mm/s (filling scanning speed), 300mm/s (profile scan speed)；Gridiron pattern fills scan line gap: 0.06mm；Layer
Between rotate angle: 67 °；
6, it post-processes, laser 3D printing pure tungsten complex thin-wall component is heat-treated: printed pure tungsten complexity is thin
Wall part is placed in vacuum heat treatment furnace, and vacuum degree is greater than 10-1Pa, furnace temperature are slowly increased to 950 DEG C to 1200 DEG C, and heat preservation 2h is extremely
3h is cooled down with 245 DEG C of furnace temperature and in such a way that cooling velocity is 30 DEG C/h, is then taken out air-cooled.
Using technical solutions according to the invention or those skilled in the art under the inspiration of technical solution of the present invention,
Similar technical solution is designed, and reaches above-mentioned technical effect, is to fall into protection scope of the present invention.
Claims (10)
1. a kind of pure tungsten 3D printing increasing material manufacturing method, which is characterized in that this kind of pure tungsten 3D printing increasing material manufacturing method is specifically wrapped
Include following steps:
Step 1: preparing pure tungsten thin slice, clears up, and wiping is dried: being prepared the pure tungsten thin slice of zone of reasonableness inside dimension, is taken one piece of sea
Continuous block immerses in antioxidant, waits the time in zone of reasonableness, takes out sponge block and is cleaned with water in pure tungsten sheet surface, is then put
It sets and is dried in ventilation；
Step 2: it after printing substrate is handled, is mounted on the print platform of 3D printing equipment: will by clip when storing
Pure tungsten thin slice after drying is installed on print platform to be processed, keeps the planarization of pure tungsten thin slice；
Step 3: prepare modeling work in 3D printing equipment: creating the three-dimensional of complex-curved sheet part with UG three-dimensional software
Then threedimensional model file created so as to subsequent hierarchy processing and is established support with the export of STL format by model；
Step 4: after modeling, then carrying out curved surface layering, establishes support: stl file derived in UG three-dimensional software is put into slice
Hierarchy slicing processing is carried out in software Materialise Magics；When layering, to select to close according to the size and shape of part
The thickness in range is managed, especially some wedge angles of part and transition portion wants emphasis to consider；For complex-curved sheet part
For, part generates biggish internal stress in order to prevent and deformation also needs to add corresponding portion support, by layered shaping and builds
The later model of vertical support is scanned pure tungsten thin slice with the export of STL format, so as to can will be before correlation in print procedure
Reason information is converted into the identifiable G language of 3D printer；
Step 5: setting pure tungsten complex thin-wall component laser 3D printing parameter: filling scan power: 450W；Fill scanning speed:
500mm/s；Fill scan line gap: 0.05mm；Profile scan power: 320W；Profile scan speed: 600mm/s；Gridiron pattern to
Amount number/size: 8 × 8；Cheque board scan power: 450W (filling power), 320W (profile scan power)；Cheque board scan speed
Degree: 500mm/s (filling scanning speed), 300mm/s (profile scan speed)；Gridiron pattern fills scan line gap: 0.06mm；Layer
Between rotate angle: 67 °；
Step 6: post-processing is heat-treated laser 3D printing pure tungsten complex thin-wall component: printed pure tungsten complexity is thin
Wall part is placed in vacuum heat treatment furnace, and heat preservation, furnace cooling is taken out air-cooled.
2. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 1, described is anti-
Oxidant uses one kind of tea polyphenols agent, tocopherol agent or flavones agent.
3. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 1, described dries in the air
The dry time is set as 35min to 40min.
4. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 4, the branch
Support mode uses mesh-supported mode.
5. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 4, described is cut
Piece is with a thickness of 0.03mm-0.032mm.
6. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 4, described is swept
The mode of retouching is set as chessboard scanning mode.
7. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 6, described is true
Empty temperature of heat treatment furnace is set as 950 DEG C to 1200 DEG C.
8. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 6, the guarantor
Warm temperature setting is 2h to 3h.
9. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 6, it is described with
Furnace cooling temperature is set as 240 DEG C to 245 DEG C.
10. pure tungsten 3D printing increasing material manufacturing method as described in claim 1, which is characterized in that in step 6, described is true
Reciprocal of duty cycle is greater than 10-1Pa。
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| CN110842199A (en) * | 2019-11-22 | 2020-02-28 | 中南大学 | Method for preparing pure tungsten component with complex structure by selective laser melting |
| CN112338188A (en) * | 2020-09-22 | 2021-02-09 | 飞而康快速制造科技有限责任公司 | Preparation method of tungsten alloy additive |
| CN113027972A (en) * | 2021-02-26 | 2021-06-25 | 复旦大学 | Truncated cone-shaped bistable energy-absorbing array structure |
| CN113021891A (en) * | 2020-12-29 | 2021-06-25 | 贵州电网有限责任公司 | Laser 3D printing method for AlSi10Mg aluminum alloy electric non-standard metal tool |
| CN113400642A (en) * | 2021-06-21 | 2021-09-17 | 安庆瑞迈特科技有限公司 | 3D printing method of medical CT machine collimator |
| CN113814417A (en) * | 2021-09-14 | 2021-12-21 | 南京中远海运船舶设备配件有限公司 | 3D printing-based marine supercharger rotor design method |
| CN114985762A (en) * | 2022-05-25 | 2022-09-02 | 合肥中科重明科技有限公司 | Forming process of thin-wall spiral curved-surface AlMg10 alloy part |
| CN116422906A (en) * | 2023-03-03 | 2023-07-14 | 安庆瑞迈特科技有限公司 | Method for improving performance of laser 3D printing tungsten and tungsten alloy grid |
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| CN113814417A (en) * | 2021-09-14 | 2021-12-21 | 南京中远海运船舶设备配件有限公司 | 3D printing-based marine supercharger rotor design method |
| CN113814417B (en) * | 2021-09-14 | 2023-09-29 | 南京中远海运船舶设备配件有限公司 | Design method of marine supercharger rotor based on 3D printing |
| CN114985762A (en) * | 2022-05-25 | 2022-09-02 | 合肥中科重明科技有限公司 | Forming process of thin-wall spiral curved-surface AlMg10 alloy part |
| CN116422906A (en) * | 2023-03-03 | 2023-07-14 | 安庆瑞迈特科技有限公司 | Method for improving performance of laser 3D printing tungsten and tungsten alloy grid |
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Application publication date: 20190510 |