CN115770886A - Synchronous cooling device and method for electron beam additive manufacturing - Google Patents
Synchronous cooling device and method for electron beam additive manufacturing Download PDFInfo
- Publication number
- CN115770886A CN115770886A CN202111046928.XA CN202111046928A CN115770886A CN 115770886 A CN115770886 A CN 115770886A CN 202111046928 A CN202111046928 A CN 202111046928A CN 115770886 A CN115770886 A CN 115770886A
- Authority
- CN
- China
- Prior art keywords
- cooling
- additive manufacturing
- electron beam
- synchronous
- cooling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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 invention provides a synchronous cooling device used in an electron beam additive manufacturing process, which comprises a movable workbench and a synchronous cooling system, wherein the movable workbench and the synchronous cooling system are positioned in a vacuum chamber, the movable workbench can move transversely and longitudinally, the cooling system is connected with the movable workbench, the movable workbench can simultaneously control the cooling system to synchronously move, and when an electron gun of an electron beam carries out additive manufacturing on a material, the synchronous cooling system can simultaneously act on the upper surface of the material to be processed, so that synchronous cooling is realized. The cooling system comprises a cooling box, a sliding guide rod, cooling liquid, a transition device, a flange clamp and a spray head, wherein the sliding guide rod is used for controlling the position of the cooling system, the flange clamp is used for connecting the transition device and the cooling box, and the spray head is used for uniformly spraying the cooling liquid onto the upper surface of the test piece. The invention can obviously improve the cooling speed of the test piece, refine the crystal grains and obtain better surface performance.
Description
Technical Field
The invention belongs to the field of electron beam additive manufacturing, and particularly relates to a synchronous cooling device and method based on electron beam fuse wire or powder laying additive manufacturing.
Background
Electron beam additive manufacturing refers to a novel manufacturing method for manufacturing three-dimensional metal parts by melting prefabricated powder or other materials through electron beams and depositing layer by layer. The concept is developed rapidly after being proposed in the later 80 s of the 20 th century, and the method is widely applied to the fields of aerospace, biomedicine, micro-nano manufacturing and the like. Compared with the traditional processing technology, the method has the advantages of high energy density, high energy utilization rate, no pollution and the like, and has wide prospect.
However, since the electron beam has high energy density and works in a vacuum environment, heat dissipation can be achieved only by heat transfer and heat radiation of the substrate, which easily causes heat accumulation and affects the processing quality. Surface quality, on the other hand, it is liable to cause coarsening of the structure, so that the properties of the final member deteriorate. For large-size members, with continuous increase of high deposition, heat input quantity is continuously increased, the distance between a molten pool and a substrate is larger and larger, the heat dissipation distance is increased, heat dissipation is difficult, and overheating phenomena are further serious.
At present, there are many technologies related to additive manufacturing cooling devices and methods, and some methods propose a method of spraying inert gas or liquid nitrogen to the surface of a processing material based on laser additive manufacturing characteristics, so that the gas is in direct contact with a component to rapidly discharge heat. And an annular water spray device is adopted to cool the local structure of the arc additive component, but the cooling mode is not suitable for electron beam additive manufacturing because the electron beam needs to work in a vacuum environment and the vacuum degree in a vacuum chamber is influenced by gas and water. <xnotran> , , , , , , . </xnotran> And gallium can react with the aluminum alloy to cause the aluminum alloy to be embrittled, and the method has certain limitation.
Disclosure of Invention
Based on the above reasons, the present invention aims to provide a synchronous cooling device and method for electron beam additive manufacturing, which can accelerate heat dissipation, prevent crystal grains from coarsening, increase production efficiency, and improve surface properties.
In order to achieve the expected purpose, the technical scheme of the invention is realized as follows: a synchronous cooling device for electron beam additive manufacturing comprises a sliding guide rod connected with a workbench and a cooling device connected with the guide rod, wherein the cooling device is connected with the workbench through the guide rod and moves synchronously with the workbench, and the cooling device and an electron beam simultaneously act on the upper surface of a test piece during electron beam additive manufacturing.
The cooling system comprises a cooling box, cooling liquid, a cooling pipe, a transition device, a spray head and a flange hoop, wherein the transition device is connected with the lower end of the cooling box through the flange hoop; the cooling box is internally provided with a water-cooling tube, water-cooling blocks are arranged in the gaps, water-cooling liquid is arranged in the water-cooling tube, and the water-cooling liquid does not leak in the water-cooling tube.
Furthermore, a snakelike water cooling pipe is arranged inside the water cooling block.
A synchronous cooling method of a synchronous cooling device for electron beam additive manufacturing specifically comprises the following steps:
step one, preparing before electron beam additive manufacturing: and fixing the workpiece to be processed on a workbench, and vacuumizing. Step two, performing electron beam additive manufacturing: in the additive manufacturing process, the process is generally performed through a fuse wire, an electron gun is fixed, and the additive manufacturing process is completed through the movement of a workbench. Because the cooling system is connected with the workbench, the cooling system can synchronously move along with the workbench.
Furthermore, in the second step, when the workpiece to be processed is not cooled, the spray head is controlled not to spray cooling liquid, and when the workpiece needs to be cooled, the spray head can be controlled to be opened.
According to the synchronous cooling device for electron beam additive manufacturing, flexible contact heat transfer can be achieved in a vacuum environment, on one hand, the problem that heat dissipation is difficult in the vacuum environment is solved, on the other hand, compared with rigid contact, the flexible contact area is large, and the heat dissipation efficiency is remarkably improved; the cooling method is synchronous cooling, the effect is not weakened along with the increase of the height of the material increase component, and high heat dissipation efficiency can be kept all the time; the method can reduce heat accumulation, inhibit coarsening of crystal grains, save heat dissipation time, improve production efficiency of electron beam additive technology and improve surface quality of processed workpieces.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention.
Fig. 1 in the accompanying drawings is a schematic structural diagram of a synchronous cooling device for electron beam additive manufacturing according to the present invention.
Fig. 2 in the accompanying drawings is a schematic structural diagram of a cooling system of a synchronous cooling device for electron beam additive manufacturing according to the present invention.
1-a vacuum chamber, 2-an electron gun, 3-an electron beam, 4-a wire feeder, 5-a test piece, 6-a transverse processing table, 7-a longitudinal processing table, 8-an exhaust system, 9-a sliding guide rod, 10-a cooling box, 11-a flange hoop, 12-a transition device, 13-a spray head, 1101-water cooling liquid and 1102-a water cooling pipe.
Claims (4)
1. A synchronous cooling device for electron beam additive manufacturing is characterized in that: when the electron beam (3) processes materials in the vacuum chamber (1), the synchronous cooling system moves synchronously with the workbench (6) through the sliding guide rod (9), so that the electron beam (3) and the synchronous cooling system act on the upper surface of a workpiece simultaneously;
the synchronous cooling system comprises a sliding guide rod (9), a cooling box (10), a flange clamp (11), a transition device (12) and a spray head (13), wherein the transition device (12) is connected with the cooling box (10) through the flange clamp (11), and the spray head (13) connected with the transition device (12) can spray cooling liquid to the upper surface of a test piece to be processed; the cooling box (10) comprises a water cooling block (1001) and a water cooling pipe (1002), and the water cooling block can enable water cooling liquid to achieve a better cooling effect.
2. The synchronous cooling device for electron beam additive manufacturing according to claim 1, wherein: a snake-shaped water cooling pipe (1002) is arranged in the water cooling tank (10).
3. The simultaneous cooling method of the simultaneous cooling apparatus for electron beam additive manufacturing according to claims 1 to 2, wherein: the method specifically comprises the following steps:
step one, preparing before electron beam additive manufacturing: fixing a workpiece to be processed on a workbench, and vacuumizing;
step two, implementing electron beam additive manufacturing: in the additive manufacturing process, the additive manufacturing process is generally carried out through a fuse wire, an electron gun is fixed, and the additive manufacturing process is completed through the movement of a workbench; because the cooling system is connected with the workbench, the cooling system can synchronously move along with the workbench.
4. The apparatus and method of claim 3, wherein the apparatus comprises: when the workpiece to be processed does not need to be cooled, the spray head is controlled not to spray cooling liquid, and when the workpiece needs to be cooled, the spray head can be controlled to be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111046928.XA CN115770886A (en) | 2021-09-08 | 2021-09-08 | Synchronous cooling device and method for electron beam additive manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111046928.XA CN115770886A (en) | 2021-09-08 | 2021-09-08 | Synchronous cooling device and method for electron beam additive manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115770886A true CN115770886A (en) | 2023-03-10 |
Family
ID=85387872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111046928.XA Pending CN115770886A (en) | 2021-09-08 | 2021-09-08 | Synchronous cooling device and method for electron beam additive manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115770886A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748536A (en) * | 2023-08-23 | 2023-09-15 | 贵州大学 | Cold jet auxiliary laser additive manufacturing device |
-
2021
- 2021-09-08 CN CN202111046928.XA patent/CN115770886A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116748536A (en) * | 2023-08-23 | 2023-09-15 | 贵州大学 | Cold jet auxiliary laser additive manufacturing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3065982C (en) | Method for controlling deformation and precision of parts in parallel during additive manufacturing process | |
| CN111215898A (en) | Electric arc additive synchronous ultrasonic hot rolling and rapid cooling combined machining device and method | |
| CN102259187A (en) | Method and device for manufacturing and repairing composite roll with high performance through laser spray forming | |
| CN111687553A (en) | Method for improving residual stress distribution of electric arc additive manufacturing structural part through ultrasonic impact | |
| CN113182644B (en) | Fixture for relieving deformation of electric arc additive manufacturing component and process method | |
| CN109514068B (en) | Device based on electron beam hot filament fuse vibration material disk | |
| CN102373468A (en) | Wide-band laser-induced hybrid cladding restoration and surface strengthening method for dies | |
| CN115770886A (en) | Synchronous cooling device and method for electron beam additive manufacturing | |
| CN111545870A (en) | Functional gradient material dual-wire dual-arc additive manufacturing system and method | |
| CN111545908A (en) | Double-laser-beam bilateral welding device and method for T-shaped structure of additive manufacturing part | |
| CN104923785A (en) | Electric arc 3D printing device and method for magnesium alloy tubular structural components | |
| CN112404712A (en) | Gas cooling device and method for laser connection of thermoplastic composite material and metal | |
| CN103540931A (en) | Method and device for alloying composite processing of laser surface through mechanical vibration assisted induction heating | |
| CN113118602A (en) | Multi-filament multi-plasma-arc and CMT double-robot collaborative material increase method | |
| CN112756628A (en) | Selective laser melting and laser shock peening composite additive manufacturing device and method | |
| CN112916874A (en) | Auxiliary forming device and method for clamping two sides of molten pool in additive manufacturing process | |
| CN110373666A (en) | A kind of synchronous cladding apparatus of the electromagnetism auxiliary laser that is remanufactured for metal parts and method | |
| CN104404505B (en) | The spraying preparation method of Cu/Mo/Cu composite sheet | |
| CN115747785A (en) | Laser-cold spraying composite remote high-speed laser cladding method | |
| CN111663134A (en) | Method for producing titanium steel composite plate by metal powder solid deposition-rolling | |
| CN112059179B (en) | Laser additive manufacturing equipment and method for manufacturing large metal component | |
| CN113199130B (en) | Integrated platform and method for ultrasonic-assisted synchronous welding and heat treatment | |
| CN214212516U (en) | Local temperature control device in brazing furnace | |
| CN108372299B (en) | Low-stress electron beam rapid forming device and forming method | |
| CN112809183A (en) | Additive manufacturing metal cooling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |