CN205888086U - A protective gas preheating device for 3D prints - Google Patents
A protective gas preheating device for 3D prints Download PDFInfo
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- CN205888086U CN205888086U CN201620902235.4U CN201620902235U CN205888086U CN 205888086 U CN205888086 U CN 205888086U CN 201620902235 U CN201620902235 U CN 201620902235U CN 205888086 U CN205888086 U CN 205888086U
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- gas
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- heating
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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 utility model discloses a protective gas preheating device for 3D prints, preheat the chamber including outside protective cover, the vacuum of setting in outside protective cover, the vacuum is preheated intracavity portion and is equipped with the gaseous heating channel that two tunnel structures are the same, get into the vacuum after gas is heated by the gaseous heating channel of air inlet entering and preheat the intracavity, get into the shaping room by the gas outlet again, every gaseous heating channel divide into the subchannel of two step heating again, this kind of structure has not only increased inert gas and has preheated the route in chamber getting into the vacuum, and the method through the heating of step one by one, it is more stable to make the inert gas after the heating, the temperature difference between laser scanning region and the interior gas of shaping cavity has not only been reduced, inert gas behind the secondary heating can continuously preheat shaping jar and powder jar endosexine metal powder simultaneously, processing in situ and layer temperature difference within a definite time significantly reduce, reduce the thermal stress, thereby reduce residual stress and deformation in the SLM forming process.
Description
Technical field
This utility model is related to selective laser fusing metal 3d and prints (slm) technical field, and more particularly, to one kind is used for 3d
The protective gas preheating device printing.
Background technology
3d printing technique, also referred to as increases material manufacturing technology, its appearance changes conventionally manufactured pattern.Selective laser is melted
(slm) technology is one kind that metal 3d prints, and its forming principle is that the threedimensional model of design is separated into profile in layer
Information, controls laser beam flying metal dust to form molten road, molten road mutually overlaps formation aspect, and aspect is stacked into three Vygens one by one
Belong to part.Compared with traditional manufacturing technology, one of advantage that slm technology projects is almost can be with the arbitrarily complicated structure of straight forming
And there is the function part of complete metallurgical binding, consistency can reach intimate 100%, and its range of application has been extended to biological doctor
The fields such as treatment, Aero-Space, automobile.
Slm processes the process that part is a high energy laser beam and metal dust effect, because metal material is in high temperature
Under easily react with the oxygen of in the air, oxide has very big negative influence to Forming Quality so that material moistening
Property be greatly reduced, hinder metallurgical binding ability between layers, between molten road；Simultaneously molding during slm often
Evoke some flue gases, exhaust gas volumn will be different regarding material and moulding process difference, but always be difficult to avoid.These flue gases are being grown
In the forming process of time, can progressively be accumulated on molding indoor article, powder, transmissive mirror, powdering mechanism are all polluted,
Reduce Forming Quality, or even because transmissive mirror is stained significantly, cause molding to interrupt.So in order to prevent metal dust in quilt
There is oxidation during laser facula fusing and reduce the impact to molding for the flue dust, generally will lead in whole forming process
Enter noble gases, usually argon or nitrogen so that the indoor oxygen content of molding drops to very low level.
During slm processing part, very big thermal stress can be produced, because laser with the effect of metal dust is
One rapid melting, the process of rapid solidification, highest transient temperature even can reach more than 2000 degrees Celsius, and this mistake
Journey occurred within the extremely short time.Generally, the gas discharging from standard gas cylinder is close to room temperature, powder cylinder and moulding cylinder
, when not having an effect with laser, temperature is close to the temperature of molding indoor gas for endosexine metal powder.In reality processing, laser is swept
Retouch powder area and Non-scanning mode powder area, between scanning area and molding interior noble gases, form very big temperature ladder
Degree, Material shrinkage is inconsistent, forms larger thermal stress and residual stress so that part deformation during processing.
Excessive thermal stress in the course of processing even can lead to support to be pulled off, and serious warpage in machined layer, both affects
The form accuracy of part and dimensional accuracy, also can damage flexible powdering brush.
Content of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of for 3d printing
Protective gas preheating device.This utility model is heated by secondary cascade, makes the noble gases after heating more stable, not only subtracts
Little temperature difference between laser scanning region and forming cavity indoor gas, simultaneously the noble gases after post bake can continue
Moulding cylinder and powder cylinder endosexine metal dust are preheated, greatly reduces the temperature difference with interlayer in machined layer, reduce heat
Stress, thus reduce the residual stress in slm forming process and deformation.
This utility model is achieved through the following technical solutions:
A kind of protective gas preheating device for 3d printing, including outside protective covers 3, be arranged on true in outside protective covers 3
Empty preheating cavity 81 and be separately positioned on the air inlet 1 of vacuum preheating cavity 81 one end and the gas outlet 9 of the other end；Described vacuum
It is provided with two line structure identical gas heating path 13 inside preheating cavity 81；Gas enters gas heating path 13 by air inlet 1
Enter in vacuum preheating cavity 81 after heated, then forming room is entered by gas outlet 9.
It is provided with multiple spaced, array arrangement electrical heating posts 6 in gas heating path 13；Described electrical heating post 6
Axis perpendicular to gas flow direction；Enter after the gas in gas heating path 13 is electrically heated post 6 heating and enter vacuum
In preheating cavity 81.
The middle part of described gas heating path 13 is additionally provided with a dividing plate 131, and gas heating path 13 is split by this dividing plate 131
Become the first preheating channel 132 and the second preheating channel 133；Electrical heating post 6 is distributed in the first preheating channel 132 and the second preheating is logical
On the internal face in road 133；Temperature in second preheating channel 133 is more than the temperature in the first preheating channel 132；First preheating is logical
Road 132 and the second preheating channel 133 provide a step temp. rising and circuitous flow path for gas.
Gas is introduced into the first preheating channel 132 and is tentatively preheated, and the gas of preliminary preheating enters the second preheating channel
133 carry out post bake intensification, complete the gas after post bake heats up and enter in vacuum preheating cavity 81, then are entered by gas outlet 9
Enter forming room.
It is distributed in the electrical heating post 6 arrangement density of the second preheating channel 133, more than the electrical heating of the first preheating channel 132
Post 6 arrangement density.
It is provided with diverter 2 between air inlet 1 and two-way gas heating path 13；Diverter 2 will enter its interior gas
It is respectively fed to each road gas heating path 13 after being divided into two-way.
Described protective gas preheating device also includes the gas for reclaiming vacuum preheating cavity 81 internal gas and reclaims
Bottle 14 and an air feed bottle 15 for providing gas to vacuum preheating cavity 81.
The import of gas returnable bottle 14 by the pipeline connection vacuum preheating cavity 81 with a water-cooled glass tubing 12, in vacuum
Preheating cavity 81 is provided with air relief valve 11 with the seam of this pipeline；The gas outlet of gas returnable bottle 14 and air feed bottle 15 is equipped with a valve
Door simultaneously connects air inlet 1 by three-way valve.
Described vacuum preheating cavity 81 is the vacuum cavity being encircled into by vacuum glass liner 8；Described vacuum glass liner 8
It is provided with asbestos heat-insulation layer 4 between outer wall and outside protective covers 3.
Pressure-detecting device 5 and temperature-detecting device 7 are installed in described vacuum preheating cavity 81；Pressure-detecting device 5 is used
Air pressure in detection vacuum preheating cavity 81, temperature-detecting device 7 is used for detecting the temperature in vacuum preheating cavity 81；Pre- in vacuum
The gas outlet 9 in hot chamber 81 is provided with the effusion meter 10 for detected gas flow.
The method that the above-mentioned protective gas preheating device for 3d printing is preheated to gas is as follows:
The preliminary preheating step of noble gases:
Noble gases in air feed bottle 15 and/or gas returnable bottle 14, after three-way valve, enter diverter by air inlet 1
2, after being divided into two-way in diverter 2, it is admitted in the first preheating channel 132 of each road gas heating path 13, by electrical heating
Post 6 carries out to it preheating for the first time, completes the preliminary preheating of noble gases；
The heating stepses again of noble gases:
After noble gases complete tentatively to preheat in the first preheating channel 132, subsequently enter the second preheating channel 133 and carry out
Post bake, makes the inert gas temperature in entrance the second preheating channel 133 be more than the temperature in the first preheating channel 132；
Noble gases are successively in step temp. rising and the roundabout stream of the first preheating channel 132 and the second preheating channel 133 composition
Behind dynamic path, enter in vacuum preheating cavity 81, finally forming room is entered by gas outlet 9.
In the work process of protective gas preheating device, when pressure-detecting device 5 detects in vacuum preheating cavity 81
When air pressure is higher than setting value, open air relief valve 11 by the noble gases higher than setting value in vacuum preheating cavity 81, through water-cooled glass
Send in gas returnable bottle 14 after glass pipe 12 cooling and store；Treat that the air pressure in vacuum preheating cavity 81 recovers to setting value or setting value
When following, close air relief valve 11.
This utility model, with respect to prior art, has such advantages as and effect:
This utility model vacuum preheating cavity 81 is provided with gas heating path 13；Enter the gas in gas heating path 13
Enter back in vacuum preheating cavity 81 after being electrically heated post 6 heating；Gas heating path 13 includes the first preheating channel 132 and
Two preheating channels 133；Temperature in second preheating channel 133 is more than the temperature in the first preheating channel 132；First preheating channel
132 and second preheating channel 133 be that gas provides a step temp. rising and circuitous flow path.Air feed bottle 15 and/or gas return
Noble gases in receipts bottle 14, after three-way valve, enter diverter 2 by air inlet 1, after being divided into two-way in diverter 2, quilt
Send in the first preheating channel 132 of each road gas heating path 13, it is carried out preheat for the first time by electrical heating post 6, then
Enter the second preheating channel 133 and carry out post bake, so that inert gas temperature in entrance the second preheating channel 133 is more than the
Temperature during one preheating channel 132；The ladder that noble gases are constituted in the first preheating channel 132 and the second preheating channel 133 successively
After level intensification and circuitous flow path, enter in vacuum preheating cavity 81, finally forming room is entered by gas outlet 9.This structure is real
Show the step heating to noble gases, so that noble gases heating-up temperature is grown steadily, gas flowing is steady, and then to metal 3d
Print (protection) noble gases being led in (slm) course of processing to be preheated.When laser scanning metal dust, due to
Enter the metal dust of forming room scanning slice and noble gases be preheating to ratio temperature required, interlayer and layer during laser scanning
Interior thermograde relatively reduces it is ensured that the Forming Quality of part and precision.
Specifically, this utility model utilizes the first preheating channel 132 and the second preheating channel 133, and noble gases can be existed
Preheated before being passed through forming room, contained preheating with heating process, this structure not only increases noble gases and entering
The path of vacuum preheating cavity, and the method by the heating of gradually step, make the noble gases after heating more stable, not only subtract
Little temperature difference between laser scanning region and forming cavity indoor gas, simultaneously the noble gases after post bake can continue
Moulding cylinder and powder cylinder endosexine metal dust are preheated, greatly reduces the temperature difference with interlayer in machined layer, reduce heat
Stress, thus reduce the residual stress in slm forming process and deformation.
This utility model is provided with arrangement (interlocking) density not in the first preheating channel 132 and the second preheating channel 133
Same electrical heating post, the axis of electrical heating post 6 is perpendicular to inert gas flows direction；This arrangement electrical heating post not only possess plus
Heat effect, and the flow-disturbing effect to noble gases can also be played, further increase noble gases in gas heating path 13
Interior stroke and the time contacting with electrical heating post 6, but also be to noble gases before entering in vacuum preheating cavity 81, first
The effect providing a buffering is so as to more stable.
This utility model is provided with pressure-detecting device 5 and temperature-detecting device 7 in vacuum preheating cavity 81；By temperature
Detection means 7, monitor in real time and the situation detecting temperature in vacuum preheating cavity 81, and electric adding is adjusted by temperature control system
The size of electric current on plume 6, realize the real-time change of the efficiency of heating surface it is ensured that inert gas temperature in vacuum preheating cavity 81 steady
Fixed.Pressure-detecting device 5 is used for the air pressure in real-time detection vacuum preheating cavity 81 it is ensured that the holding of vacuum preheating cavity 81 is stable
Operating pressure；And air relief valve is mounted with the cavity wall of vacuum preheating cavity 81, maintain the steady of heating chamber internal gas pressure further
Fixed and safety, has prevented in confined space high temperature and high pressure gas the potential safety hazard to come.
This utility model also has additional a set of gas concentration unit, will be unnecessary within vacuum preheating cavity 81 in warm
After noble gases and slm process finishing, the whole high temperature and high pressure gas circulating remaining in gas circuit are collected to store and are added for next time
Work is continuing with it is therefore prevented that the wasting of resources.In noble gases removal process, for the sake of security, recovery pipe is provided with
One gas cooling device (water-cooled glass tubing) carried out lowering the temperature cold before entering the storage of gas returnable bottle to the noble gases reclaiming
But.
This utility model technological means are simple and easy to do, cheap, be 3d print (slm) course of processing in profiled member plus
Work precision, there is provided ensure.
Brief description
Fig. 1 is used for the structural representation of the protective gas preheating device that 3d prints for this utility model.
Specific embodiment
With reference to specific embodiment, this utility model is more specifically described in detail.
Embodiment
As shown in Figure 1.The utility model discloses a kind of protective gas preheating device for 3d printing, outer including protection
Cover 3, the vacuum preheating cavity 81 being arranged in outside protective covers 3 and air inlet 1 and being separately positioned on vacuum preheating cavity 81 one end
The gas outlet 9 of the other end；It is provided with two line structure identical gas heating path 13 inside described vacuum preheating cavity 81；Gas is by entering
QI KOU 1 enters after gas heating path 13 is heated and enters in vacuum preheating cavity 81, then enters forming room by gas outlet 9.Described
Gas generally refers to noble gases.
It is provided with multiple spaced, array arrangement electrical heating posts 6 in gas heating path 13；Described electrical heating post 6
Axis perpendicular to gas flow direction；Enter after the gas in gas heating path 13 is electrically heated post 6 heating and enter vacuum
In preheating cavity 81.
The middle part of described gas heating path 13 is additionally provided with a dividing plate 131, and gas heating path 13 is split by this dividing plate 131
Become the first preheating channel 132 and the second preheating channel 133；Electrical heating post 6 is distributed in the first preheating channel 132 and the second preheating is logical
On the internal face in road 133；Temperature in second preheating channel 133 is more than the temperature in the first preheating channel 132；First preheating is logical
Road 132 and the second preheating channel 133 provide a step temp. rising and circuitous flow path for gas；Gas is introduced into the first preheating
Passage 132 is tentatively preheated, and the gas of preliminary preheating enters the second preheating channel 133 and carries out post bake intensification, completes two
Gas after secondary heat temperature raising enters in vacuum preheating cavity 81, then enters forming room by gas outlet 9.This structure not only increases
Noble gases are in the path of entrance vacuum preheating cavity, and the method by the heating of gradually step, make the noble gases after heating
More stable, not only reduce the temperature difference between laser scanning region and forming cavity indoor gas, simultaneously after post bake
Noble gases can persistently preheat to moulding cylinder and powder cylinder endosexine metal dust, greatly reduces in machined layer and interlayer
Temperature difference, reduce thermal stress, thus reducing the residual stress in slm forming process and deformation.
It is distributed in the electrical heating post 6 arrangement density of the second preheating channel 133, more than the electrical heating of the first preheating channel 132
Post 6 arrangement density.This layout not only can make gas be gradually heated up, and can rise to air-flow before entering vacuum preheating cavity 81
Effect to buffering transition.
It is provided with diverter 2 between air inlet 1 and two-way gas heating path 13；Diverter 2 will enter its interior gas
It is respectively fed to each road gas heating path 13 after being divided into two-way.
Described protective gas preheating device also includes the gas for reclaiming vacuum preheating cavity 81 internal gas and reclaims
Bottle 14 and an air feed bottle 15 for providing gas to vacuum preheating cavity 81；The import of gas returnable bottle 14 is by with a water
The pipeline connection vacuum preheating cavity 81 of cold glass tubing 12, is provided with air relief valve 11 in the seam of vacuum preheating cavity 81 and this pipeline；
The gas outlet of gas returnable bottle 14 and air feed bottle 15 is equipped with a valve and connects air inlet 1 by three-way valve.By warm
The High Temperature High Pressure of remaining in whole circulation gas circuit after unnecessary noble gases within middle vacuum preheating cavity 81 and slm process finishing
Collection and confinement of gases stores and is continuing with it is therefore prevented that the wasting of resources for processing next time.Water-cooled glass tubing 12 makes noble gases reclaim
During, for the sake of security, before entering the storage of gas returnable bottle, cooling down is carried out to noble gases.
Described vacuum preheating cavity 81 is the vacuum cavity being encircled into by vacuum glass liner 8；Described vacuum glass liner 8
It is provided with asbestos heat-insulation layer 4 between outer wall and outside protective covers 3.
Pressure-detecting device 5 and temperature-detecting device 7 are installed in described vacuum preheating cavity 81；Pressure-detecting device 5 is used
Air pressure in detection vacuum preheating cavity 81, temperature-detecting device 7 is used for detecting the temperature in vacuum preheating cavity 81；Pre- in vacuum
The gas outlet 9 in hot chamber 81 is provided with the effusion meter 10 for detected gas flow.
The method that this utility model is preheated to gas can be achieved by the steps of:
Noble gases in air feed bottle 15 and/or gas returnable bottle 14, after three-way valve, enter diverter by air inlet 1
2, after being divided into two-way in diverter 2, it is admitted in the first preheating channel 132 of each road gas heating path 13, by electrical heating
Post 6 carries out to it preheating for the first time, completes the preliminary preheating of noble gases；
After noble gases complete tentatively to preheat in the first preheating channel 132, subsequently enter the second preheating channel 133 and carry out
Post bake, makes the inert gas temperature in entrance the second preheating channel 133 be more than the temperature in the first preheating channel 132；
Noble gases are successively in step temp. rising and the roundabout stream of the first preheating channel 132 and the second preheating channel 133 composition
Behind dynamic path, enter in vacuum preheating cavity 81, finally forming room is entered by gas outlet 9.
In the work process of protective gas preheating device, when pressure-detecting device 5 detects in vacuum preheating cavity 81
When air pressure is higher than setting value, open air relief valve 11 by the noble gases higher than setting value in vacuum preheating cavity 81, through water-cooled glass
Send in gas returnable bottle 14 after glass pipe 12 cooling and store；Treat that the air pressure in vacuum preheating cavity 81 recovers to setting value or setting value
When following, close air relief valve 11.
As described above, just can preferably realize this utility model.
Embodiment of the present utility model is simultaneously not restricted to the described embodiments, other any without departing from of the present utility model
Spirit and the change made under principle, modification, replacement, combine, simplify, all should be equivalent substitute mode, be included in
Within protection domain of the present utility model.
Claims (8)
1. a kind of protective gas preheating device for 3d printing, including outside protective covers (3), is arranged in outside protective covers (3)
Vacuum preheating cavity (81) and be separately positioned on the air inlet (1) of vacuum preheating cavity (81) one end and the gas outlet of the other end
(9)；It is characterized in that: it is provided with two line structures identical gas heating path (13) inside described vacuum preheating cavity (81)；Gas
Entered after gas heating path (13) is heated by air inlet (1) and enter in vacuum preheating cavity (81), then entered by gas outlet (9)
Forming room.
2. according to claim 1 be used for 3d print protective gas preheating device it is characterised in that: in gas heating path
(13) it is provided with multiple spaced, array arrangement electrical heating posts (6) in；The axis of described electrical heating post (6) is perpendicular to gas
Flow direction；Enter after the gas in gas heating path (13) is electrically heated post (6) heating and enter in vacuum preheating cavity (81).
3. be used for protective gas preheating device that 3d prints according to claim 2 it is characterised in that: the heating of described gas is logical
The middle part in road (13) is additionally provided with a dividing plate (131), and gas heating path (13) is divided into the first preheating channel by this dividing plate (131)
(132) and the second preheating channel (133)；Electrical heating post (6) is distributed in the first preheating channel (132) and the second preheating channel
(133) on internal face；Temperature in second preheating channel (133) is more than the temperature in the first preheating channel (132)；First is pre-
The passage of heat (132) and the second preheating channel (133) provide a step temp. rising and circuitous flow path for gas；
Gas is introduced into the first preheating channel (132) and is tentatively preheated, and the gas of preliminary preheating enters the second preheating channel
(133) carry out post bake intensification, complete the gas after post bake heats up and enter in vacuum preheating cavity (81), then by gas outlet
(9) enter forming room.
4. according to claim 3 be used for 3d print protective gas preheating device it is characterised in that: be distributed in the second preheating
Electrical heating post (6) the arrangement density of passage (133), more than electrical heating post (6) the arrangement density of the first preheating channel (132).
5. according to claim 1 be used for 3d print protective gas preheating device it is characterised in that: air inlet (1) and two
It is provided with diverter (2) between road gas heating path (13)；Diverter (2) is divided into entering its interior gas after two-way respectively
Send into each road gas heating path (13).
6. according to claim 1 be used for 3d print protective gas preheating device it is characterised in that: described protective gas is pre-
Thermal also includes a gas returnable bottle (14) being used for reclaiming vacuum preheating cavity (81) internal gas and one and is used for true
Empty preheating cavity (81) provides the air feed bottle (15) of gas；
The import of gas returnable bottle (14) by pipeline connection vacuum preheating cavity (81) with a water-cooled glass tubing (12), true
Empty preheating cavity (81) is provided with air relief valve (11) with the seam of this pipeline；Gas returnable bottle (14) and the gas outlet of air feed bottle (15)
It is equipped with a valve and air inlet (1) is connected by three-way valve.
7. according to claim 1 be used for 3d print protective gas preheating device it is characterised in that: described vacuum preheating cavity
(81) it is the vacuum cavity being encircled into by vacuum glass liner (8)；The outer wall of described vacuum glass liner (8) and outside protective covers
(3) it is provided with asbestos heat-insulation layer (4) between.
8. according to any one of claim 1 to 7 be used for 3d print protective gas preheating device it is characterised in that: institute
State and pressure-detecting device (5) and temperature-detecting device (7) are installed in vacuum preheating cavity (81)；
Pressure-detecting device (5) is used for detecting the air pressure in vacuum preheating cavity (81), and temperature-detecting device (7) is used for detecting vacuum
Temperature in preheating cavity (81)；The gas outlet (9) of vacuum preheating cavity (81) is provided with the effusion meter for detected gas flow
(10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620902235.4U CN205888086U (en) | 2016-08-18 | 2016-08-18 | A protective gas preheating device for 3D prints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620902235.4U CN205888086U (en) | 2016-08-18 | 2016-08-18 | A protective gas preheating device for 3D prints |
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| Publication Number | Publication Date |
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| CN205888086U true CN205888086U (en) | 2017-01-18 |
Family
ID=57779058
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620902235.4U Active CN205888086U (en) | 2016-08-18 | 2016-08-18 | A protective gas preheating device for 3D prints |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111989A (en) * | 2016-08-18 | 2016-11-16 | 华南理工大学 | A kind of protective gas pre-heating mean printed for 3D and device |
| CN107695520A (en) * | 2017-09-18 | 2018-02-16 | 中国科学院力学研究所 | The laser regulation device and method of stress when regulation laser gain material is manufactured or remanufactured |
| CN108031846A (en) * | 2017-12-11 | 2018-05-15 | 昆明理工大学 | A kind of airflow circulating heating and filtering device for SLM processes |
| CN111515391A (en) * | 2020-04-16 | 2020-08-11 | 陕西斯瑞新材料股份有限公司 | Method for printing combustion chamber lining by GRCop-42 spherical powder |
-
2016
- 2016-08-18 CN CN201620902235.4U patent/CN205888086U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111989A (en) * | 2016-08-18 | 2016-11-16 | 华南理工大学 | A kind of protective gas pre-heating mean printed for 3D and device |
| CN107695520A (en) * | 2017-09-18 | 2018-02-16 | 中国科学院力学研究所 | The laser regulation device and method of stress when regulation laser gain material is manufactured or remanufactured |
| CN108031846A (en) * | 2017-12-11 | 2018-05-15 | 昆明理工大学 | A kind of airflow circulating heating and filtering device for SLM processes |
| CN108031846B (en) * | 2017-12-11 | 2019-09-27 | 昆明理工大学 | A kind of airflow circulating heating and filtering device for SLM process |
| CN111515391A (en) * | 2020-04-16 | 2020-08-11 | 陕西斯瑞新材料股份有限公司 | Method for printing combustion chamber lining by GRCop-42 spherical powder |
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