CN209598196U - A kind of laser deposition manufacturing device based on Quench technology - Google Patents
A kind of laser deposition manufacturing device based on Quench technology Download PDFInfo
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- CN209598196U CN209598196U CN201822203383.9U CN201822203383U CN209598196U CN 209598196 U CN209598196 U CN 209598196U CN 201822203383 U CN201822203383 U CN 201822203383U CN 209598196 U CN209598196 U CN 209598196U
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- quench
- laser deposition
- cladding head
- manufacturing device
- deposition
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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 kind of laser deposition manufacturing devices based on Quench technology, belong to increases material manufacturing technology field.The laser deposition manufacturing device includes cladding head and the Quench mechanism that cladding head rear is arranged in, and Quench mechanism and cladding head generate linkage.The Quench mechanism further includes the controller for adjusting shock chilling medium flow and flow rate.The utility model is by carrying out Quench processing to the deposition region surface just solidified, shrink the deposition region that tensile stress state is presented and adjacent parts rapidly, generate stretching plastic deformation, reduce sedimentary heat accumulation, realize the effective control and management that product residual stress and heat input are manufactured to laser deposition, the problem of reducing drip molding strain cracking, greatly improve forming quality.
Description
Technical field
The utility model relates to laser deposition manufacturing technology fields, heavy more particularly to a kind of laser based on Quench technology
Product manufacturing device.
Background technique
Laser deposition of metal manufacturing technology is based on the manufacturing theory that is layering, using laser as heat source, to what is coaxially conveyed
Metal powder material realizes layer-by-layer melt deposition according to the scan path of planning, to be formed with the metal parts of 3D shape
Technology.This technology is used widely in aerospace, especially titanium alloy etc materials large parts it is direct at
Field is made and repaired to shape.
However, in the fabrication process, the strain cracking and forming quality problem of drip molding are that this technology is hindered to develop
The manufacture of the laser deposition of major obstacle, especially large area and bulk metal part.It is multi-party for leading to the factor of this reason
Face, including material, technique, equipment etc..But it is mainly due to, using laser by powder heating and melting, cooled and solidified
Afterwards, deposition workpiece shows high residual-tensile stress state, causes strain cracking.In addition, being made due to the Multi Slice Mode of laser
Deposition workpiece surface heat accumulation is more serious, and interlayer temperature is higher, and using under original technological parameter, pool size changes,
The slice width layer height of the cladding layer deposited changes, and then influences deposition quality.
Cause pool size variation that the approach of forming quality difference is caused to have currently, solution interlayer temperature is excessively high in engineering: one
It kind is and then to reduce interlayer temperature, but the too long interlayer residence time sacrifices production efficiency by increasing the interlayer residence time；
One is changing technological parameter in real time according to the experience of site technique personnel, but this requirement to technologist is particularly severe,
And artificial lasting intervention is needed, cannot achieve automation.There are also solve Forming Workpiece residual-tensile stress greatly deformation is caused to be opened
The approach split is the reduction temperature gradient by preheating to substrate, but material lower for the thermal conductivity as titanium alloy
Material and some shaping form complexity are unfavorable for the workpiece of heat transfer, can not reduce residual-tensile stress well.
Therefore, be badly in need of a kind of device that can reduces residual-tensile stress and heat accumulation in laser deposition manufacturing process with
Method, and then the strain cracking in deposition process is reduced, improve forming quality.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of laser deposition manufacturing devices based on Quench technology, make
It can reduce residual-tensile stress and heat accumulation in laser deposition manufacturing process, so that existing laser deposition be overcome to manufacture
The deficiency of device.
In order to solve the above technical problems, the utility model provides a kind of laser deposition manufacturing device based on Quench technology,
The laser deposition manufacturing device includes cladding head and the Quench mechanism that the cladding head rear is arranged in, the Quench mechanism with
The cladding head generates linkage.
Further, the Quench mechanism realizes the linkage with the cladding head by transport mechanism.
Further, the Quench mechanism includes jet blower, and the jet blower is for spraying shock chilling medium.
Further, the first moving cell and the second moving cell are provided in the transport mechanism, the cladding head is set
It sets on the first moving cell, the jet blower is arranged on the second moving cell；In use, the first moving cell is always
The forward of the direction of motion of two moving cells.
Further, the Quench mechanism further includes the controller for adjusting shock chilling medium flow and flow rate.
Further, the Quench mechanism is arranged at the 20~50mm of cladding head rear.
By adopting such a design, the utility model at least has the following advantages:
The utility model is swashed based on the laser deposition manufacturing device of Quench technology by being arranged at the rear of existing cladding head
Cold structure is able to achieve and carries out Quench processing to just deposited metal deposit surface, right in laser deposition manufacturing process to realize
Deposition region residual-tensile stress, which offset, even to be eliminated and reduces the heat accumulation of deposition process and play very effective effect.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is the structural schematic diagram of laser deposition manufacturing device of the utility model based on Quench technology；
Fig. 2 is the transport mechanism structural schematic diagram of laser deposition manufacturing device of the utility model based on Quench technology；
1. cladding head；2. Quench mechanism；3. transport mechanism；31. the first moving cell；32. the second moving cell；4. spray
Nozzle.
Specific embodiment
Laser deposition manufacturing device of the utility model based on Quench technology is the base in existing laser deposition manufacturing device
Made of improving on plinth, specific improvement is as follows:
Referring to shown in attached drawing 1 and Fig. 2, laser deposition manufacturing device of the utility model based on Quench technology includes cladding head
1 and the Quench mechanism 2 at 1 rear of cladding head is set, the Quench mechanism 2 and the cladding head 1 generate linkage.
By adopting the above technical scheme, it by the way that Quench mechanism is arranged at the rear of existing cladding head, is able to achieve to just deposited
Metal deposit surface carry out Quench processing, for realize laser deposition manufacturing process in deposition region residual-tensile stress carry out
It offsets and even is eliminated and reduces the heat accumulation of deposition process and play very effective effect.
In conjunction with above-described embodiment, further, in this embodiment, which is realized molten with this by transport mechanism 3
First 1 linkage is covered, which can be used existing any transport mechanism, it is therefore intended that realize that the Quench mechanism 2 is molten with this
Cover first 1 linkage.Specifically, as shown in Fig. 2, the structure of transport mechanism 3 is as shown in Fig. 2, transport mechanism 3 is to appoint in the prior art
The mechanism of transmission may be implemented in what, and the first moving cell 31 and the second moving cell 32, institute are provided in the transport mechanism 3
It states cladding head 1 to be arranged on the first moving cell 31, Quench mechanism 2 includes jet blower 4, and the setting of jet blower 4 is single in the second movement
In member 32, and the Quench mechanism 2 is arranged in 20~50mm of rear of the cladding head 1 at, wherein the rear of the cladding head 1 refer to and
The cladding head direction opposite by pre-set direction of advance A.
By adopting the above technical scheme, which can spray that shock chilling medium is melted to the cladding head and just the metal that solidifies is heavy
Lamination upper surface makes the metal surface of the rigid solidification deposition obtain Quench processing.
In conjunction with above-described embodiment, further, in this embodiment, which further includes a controller, the controller
For adjusting the flow and flow rate of shock chilling medium, to control the Quench source strength of the shock chilling medium.Controller can use existing
The controller that flow control and flow control arbitrarily may be implemented in technology, for example, by using the flow control of model ELR23DC
Instrument.
It is heavy that the utility model also provides a kind of laser based on Quench technology using above-mentioned laser deposition manufacturing device
Product manufacturing method, i.e. this method include carrying out the step of Quench processing to the metal surface of rigid solidification deposition in laser deposition process
Suddenly.And the Quench processing step is completed by the Quench mechanism in laser deposition manufacturing device.
The shock chilling medium that the utility model Quench mechanism uses is liquid argon air-liquid state helium or liquid nitrogen etc..This swashs
The flow and flow rate of cold medium can be adjusted according to the feature and laser forming parameter of part to be formed, wherein the part to be formed
Feature include moulding material, surface shape and volume size, which includes laser power, scanning speed and send
Powder speed.Specifically, as follows for the laser deposition process conditions of Quench technology: spot diameter 3-10mm, laser power
For 1500-8000W, deposition velocity 800-1400mm/min, overlapping rate 30-60%；Deposition thickness is 0.5-1.5mm；At this
Under process conditions, when the conduit cross-sectional area of shock chilling medium is 2mm to 5mm, the flow velocity for generally requiring controlled chilling medium is 1-
Purpose described in the utility model can be realized in 10m/min.
In order to more embody the purpose of this utility model, on the basis of the above embodiments, it is further illustrated.This
A kind of laser deposition manufacturing method that titanium alloy component is prepared based on Quench technology is provided in embodiment, wherein the titanium alloy prepared
Part size is 120mm × 120mm × 40mm, and the shock chilling medium used is liquid nitrogen, specific implementation step are as follows:
(1) substrate is fixed on the table, shock chilling medium is passed through in Xiang Jileng mechanism；
(2) threedimensional model for establishing part to be printed is sliced threedimensional model using Slice Software, and plans laser
Scan path formulates the molding fabrication scheme of laser deposition；
(3) start laser deposition equipment, deposit cladding head by pre-set track, laser deposition process conditions
It is as follows: spot diameter 5mm, laser power 3500W, deposition velocity 1100mm/min, overlapping rate 45%, deposition thickness
For 1.0mm；
(4) start Quench mechanism, spray process, the tool of spray are carried out to just deposited deposition region B with shock chilling medium
Body process is as follows: jet blower is connected to Quench wet tank (not showing in attached drawing) by pipeline, needs to carry out Quench liquid spray
When penetrating, the flow and flow rate of the Quench liquid in pipeline is adjusted by controller, is sprayed under required flow velocity；
In the present embodiment, the conduit cross-sectional area for conveying shock chilling medium is 3mm, and the flow control of shock chilling medium is 5m/min；Quench mistake
Cheng Zhong can adjust Quench source strength according to the feature of formation of parts and laser forming parameter in real time, until completing entire part
Deposit manufacture.
The utility model is able to achieve the purpose for reducing residual-tensile stress, its working principle is that: laser deposition manufacturing process
In, the solid metallic expanded by heating near molten bath, constraint of the thermal expansion amount by metal in cooler regions around forms unevenness
Even compressive plastic deformation.In cooling procedure, molten bath solidification shrinkage when by solid metallic around constraint and form remnants
Tensile stress, adjacent to the solid metallic the being plastically deformed also stretching action by surrounding metal to varying degrees, finally
Form residual tension.When being reduced to a certain temperature after the solidification of molten bath, spray process is carried out to its surface using shock chilling medium,
Shrink the region in tensile stress state sharply, when shrinkage stress overcomes material yield limit at this temperature, the position
Stretching plastic deformation occurs, if deposition channel temp is more than a certain critical temperature value, stretching plastic deformation is in whole counteractings
While original compressive plastic deformation, stretching plastic deformation there remains, after cooling, remaining stretching plastic deformation receives week
It encloses extruding metal and forms residual compressive stress field, this improves the fatigue resistance etc. of Forming Workpiece to preventing Forming Workpiece from cracking
Performance has good effect.
The utility model is a kind of master that the laser deposition manufacturing method based on Quench technology belongs to formed product quality
Flowing control method, the purpose is to realize in laser deposition manufacturing process that deposition region residual-tensile stress is offset or even disappeared
Remove and reduce the heat accumulation of deposition process, this method, which can be realized, manufactures product residual stress and heat input to laser deposition
The problem of effectively controlling and manage, capable of reducing drip molding strain cracking, greatly improves forming quality.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (3)
1. a kind of laser deposition manufacturing device based on Quench technology, which is characterized in that the laser deposition manufacturing device includes
Cladding head and the Quench mechanism that the cladding head rear is arranged in, the Quench mechanism are realized and the cladding by transport mechanism
The linkage of head；The Quench mechanism includes jet blower, and the jet blower is for spraying shock chilling medium；It is arranged in the transport mechanism
There are the first moving cell and the second moving cell, the cladding head is arranged on first moving cell, and the jet blower is set
It sets on second moving cell；In use, first moving cell is always in the movement side of second moving cell
To forward.
2. laser deposition manufacturing device according to claim 1, which is characterized in that the Quench mechanism further includes for adjusting
The controller of whole shock chilling medium flow and flow rate.
3. any laser deposition manufacturing device according to claim 1~2, which is characterized in that the Quench mechanism setting
At the 20~50mm of cladding head rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203383.9U CN209598196U (en) | 2018-12-26 | 2018-12-26 | A kind of laser deposition manufacturing device based on Quench technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203383.9U CN209598196U (en) | 2018-12-26 | 2018-12-26 | A kind of laser deposition manufacturing device based on Quench technology |
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| CN209598196U true CN209598196U (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382517A (en) * | 2018-12-26 | 2019-02-26 | 鑫精合激光科技发展（北京）有限公司 | A kind of laser deposition manufacturing device and method based on Quench technology |
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2018
- 2018-12-26 CN CN201822203383.9U patent/CN209598196U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382517A (en) * | 2018-12-26 | 2019-02-26 | 鑫精合激光科技发展（北京）有限公司 | A kind of laser deposition manufacturing device and method based on Quench technology |
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Effective date of registration: 20220228 Address after: 261000 Complex Building 3 and workshops 6, 7 and 8, Weifang Xinfu automobile park, Zhangying community, Qingchi street, Weifang High tech Zone, Weifang City, Shandong Province Patentee after: Weifang xinjinghe Intelligent Equipment Co.,Ltd. Address before: 102206 101, 204, 205, building 5, No. 97, Changping Road, Shahe Town, Changping District, Beijing Patentee before: XINJINGHE LASER TECHNOLOGY DEVELOPMENT (BEIJING) Co.,Ltd. |
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