CN106956000A - A kind of fast preparation method of TiAl-base alloy drip molding - Google Patents

A kind of fast preparation method of TiAl-base alloy drip molding Download PDF

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Publication number
CN106956000A
CN106956000A CN201710136804.8A CN201710136804A CN106956000A CN 106956000 A CN106956000 A CN 106956000A CN 201710136804 A CN201710136804 A CN 201710136804A CN 106956000 A CN106956000 A CN 106956000A
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laser
tial
drip molding
base alloy
powder
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杨森
张琛
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/40—Radiation means
    • B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/22—Driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/34—Process control of powder characteristics, e.g. density, oxidation or flowability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/30—Platforms or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50—Means for feeding of material, e.g. heads
    • B22F12/53—Nozzles
    • 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 discloses a kind of fast preparation method of TiAl-base alloy drip molding, step is as follows：The three-dimensional entity model of TiAl-base alloy drip molding is set up, the geological information of each cross section is obtained by hierarchy slicing, and is converted into numerical control table, NC table motion track information；Substrate is fixed on the numerical control table, NC table of five-axle linkage, substrate is partially melting to form molten bath in the presence of laser, while being allowed to melt by the heat affected area that TiAl-base alloy pre-alloyed powder sends into laser using synchronous powder feeding system method；Now numerical control table, NC table is moved according to the track of setting so that in substrate surface formation cladding layer；New sedimentary is frozen on the basis of first layer cladding layer, is successively accumulated afterwards, 3D solid drip molding is finally given, Milling Process finally is carried out to drip molding surface.The present invention achievable multi items, the quick manufacture of parts in small batch, have the advantages that stock utilization height, processing flexibility are high, and drip molding room-temperature mechanical property is excellent, easy to utilize.

Description

A kind of fast preparation method of TiAl-base alloy drip molding
Technical field
The present invention relates to a kind of brittle metal material forming techniques, particularly a kind of quick system of TiAl-base alloy drip molding Preparation Method.
Background technology
TiAl-base alloy has the advantages that low-density, high-melting-point, high elastic modulus and high specific strength, there is good at high temperature Good creep resistant and antioxygenic property, it is considered to be preferably high-temperature structural material of future generation.But TiAl-base alloy room temperature is moulded Property is poor, and the characteristics of shaping difficulty is the major obstacle of its development and application.
The traditional forming methods of TiAl-base alloy include ingot metallurgy, hot investment casting and powder metallurgic method.Ingot metallurgy Method can obtain that even tissue is tiny, better performances TiAl-base alloy drip moldings, but its complex process, allowance are big, material Expect that utilization rate is low.In addition, the forward and backward treatment process of ingot metallurgy is more, duration is processed, production cost is added.At present, cast TiAl-base alloy has come into the commercial Application stage.Foundry engieering low cost, can direct forming, but common contracting in casting Hole, shrinkage porosite, component segregation, organize the defect such as thick to be equally existed in TiAl-base alloy precision castings, have a strong impact on the power of alloy Learn performance.Powder metallurgic method effectively prevent the casting flaws such as segregation, shrinkage porosite, shrinkage cavity, can prepare even tissue, tiny TiAl-base alloy drip molding, and the near-net-shape of baroque part can be realized.However, alloy in preparation process easily by The pollution of interstitial element, it is oxygen-containing to wait impurity more, cause plasticity lower.In addition, the control of porosity is also powder metallurgy legal system The subject matter that standby TiAl-base alloy faces.
In order to further expand the application scale of TiAl-base alloy, it is necessary to improve combination property and the reduction of TiAl-base alloy Production cost.All there is respective limitation in TiAl-base alloy traditional forming methods and difficulty has compared with quantum jump, Development of Novel in a short time TiAl-base alloy forming technology is to solve the important directions that TiAl-base alloy shapes problem.The method that the present invention is used is one Plant advanced near-net-shape technique.Compared to the traditional forming methods of TiAl-base alloy, the method that the present invention is used exists following Advantage：(1) traditional mould and large scale industry facility is not needed, manufacturing procedure is few, stock utilization is high, follow-up machining is remaining Amount is small, reduces production cost；(2) it is flexible high, multi items, the quick manufacture of parts in small batch can be achieved；(3) process material The cooling velocity of material is fast, and the microscopic structure of drip molding is tiny, and it is scarce to avoid macrostructure common in traditional casting, forging Fall into, mechanical property is preferable.
The content of the invention
It is an object of the invention to provide a kind of production cost is low, forming speed is fast, stock utilization is high, drip molding room temperature The TiAl-base alloy preparation method of excellent in mechanical performance so that it is poor to solve current TiAl-base alloy material temperature-room type plasticity, tradition into Shape method prepares the problem of difficulty is big.
Realize that the object of the invention technical solution is：A kind of fast preparation method of TiAl-base alloy drip molding, including Following steps：
Step 1, the three-dimensional entity model of drip molding is set up, the geological information of each cross section is obtained by hierarchy slicing, And it is converted into numerical control table, NC table motion track information；
Step 2, substrate is fixed on the numerical control table, NC table of five-axle linkage, substrate local melting in the presence of laser beam Molten bath is formed, while being allowed to melt by the heat affected area that TiAl-base alloy pre-alloyed powder sends into laser using synchronous powder feeding system method； Now numerical control table, NC table is moved according to the track obtained by step 1 so that in substrate surface formation first layer cladding layer；
Step 3, laser head and powder-feeding nozzle are risen to cladding layer thickness identical highly, laser beam will enter hot shadow The powder for ringing area is heated and melted, and new sedimentary is frozen on the basis of first layer cladding layer, is successively accumulated afterwards, finally Obtain 3D solid drip molding；
Step 4, Milling Process is carried out to drip molding outer surface, is met the drip molding of surface finish requirements.
Preferably, in step 2, described TiAl-base alloy pre-alloyed powder is particle size range between 50~150 μm Spherical powder.
Preferably, in step 2, using argon gas as whole process protection atmosphere, wherein laser processing parameter is：Laser power For：200~2200W, sweep speed is：80~1080mm/min, powder feeding rate be 0.8~5.7g/min, defocusing amount be 6~ 10mm。
Preferably, in step 2, the generation equipment of laser beam is CO2Laser, Nd：YAG laser, optical fiber laser or Semiconductor laser.
Compared with prior art, its remarkable advantage is the present invention：Traditional mould and large scale industry facility is not needed, Manufacturing procedure is few, reduces production cost.(1) manufacturing process is quick, and stock utilization is high, low cost；(2) it is flexible high, can be real Existing multi items, the quick manufacture of parts in small batch；(3) cooling velocity of process material is fast, drip molding fine microstructures, and keeps away Macrostructure's defect common in traditional casting, forging is exempted from, mechanical property is preferable；(4) follow-up machining allowance is small, is easy to push away Wide application.
Embodiment
The means that the present invention is combined based on laser melting coating and increasing material manufacturing, TiAl base prealloys are made using laser as thermal source Powder fusing, cooling, solidification forming, so as to solve the processing problem of TiAl-base alloy.
A kind of fast preparation method of TiAl-base alloy drip molding, is comprised the following specific steps that：
Step 1, the three-dimensional entity model of TiAl-base alloy drip molding is set up, each cross section is obtained by hierarchy slicing Geological information, and it is converted into numerical control table, NC table motion track information；
Step 2, substrate is fixed on the numerical control table, NC table of five-axle linkage, substrate local melting shape in the presence of laser Into molten bath, while the heat affected area that TiAl-base alloy pre-alloyed powder sends into laser is allowed to melt using synchronous powder feeding system method；This When numerical control table, NC table moved according to the track obtained by step 1 so that in substrate surface formation first layer cladding layer；Used by this step TiAl-base alloy pre-alloyed powder be spherical powder of the particle size range between 50~150 μm.Process is made using argon gas For protective atmosphere, wherein laser processing parameter is：Laser power is：200~2200W, sweep speed is：80~1080mm/ Min, powder feeding rate is 0.8~5.7g/min, and defocusing amount is 6~10mm.The generation equipment of the laser beam is CO2Laser, Nd：YAG laser, optical fiber laser or semiconductor laser.
Step 3, laser head and powder-feeding nozzle are risen to cladding layer thickness identical highly, laser beam will enter hot shadow The powder for ringing area is heated and melted, and new sedimentary is frozen on the basis of first layer cladding layer, is successively accumulated afterwards, finally Obtain TiAl-base alloy 3D solid drip molding；It is consistent wherein in laser processing parameter, powder feeding rate and step 2.
Step 4, Milling Process is carried out to drip molding outer surface, is met the TiAl-base alloy shaping of surface finish requirements Part.
In order that present disclosure is more easily understood, the present invention is explained below by specific embodiment Release.
Embodiment 1
A kind of fast preparation method of TiAl-base alloy drip molding, its preparation process is as follows：
(1) 50~150 μm of Ti-46Al-2Nb-2Cr alloy spherical powder is put into 100 DEG C of drying in vacuum drying chamber 20h, removes the moisture in powder.
(2) using TC4 titanium alloy sheets as matrix material, and 60mm*60mm*10mm size is cut into, will with sand paper The oxide-film of substrate surface is removed, and clean with alcohol washes.
(3) three-dimensional CAD model of part is pressed into certain thickness hierarchy slicing, is converted to a series of two-dimensional geometry information, According to these information, and it is converted into numerical control table, NC table motion track information.
(4) substrate is fixed on the numerical control table, NC table of five-axle linkage, source, laser apparatus is used as using 200W optical fiber laser Standby, process is used as protective atmosphere using argon gas.Base material is partially melting to form molten bath in the presence of laser, while using same Walk in the heat affected area that powder-feeding method makes TiAl-base alloy pre-alloyed powder enter laser with certain speed and in superlaser Effect is lower to melt, and forms cooled and solidified after molten drop is fallen into molten bath.Now workbench according to CAD give each layer cross section track Information is moved in X, Y direction.So that forming cladding layer in the specific region of substrate surface；Machined parameters are：Laser power 200W, sweep speed 80mm/min, powder feeding rate 0.8g/min, defocusing amount 6mm, carrier gas flux is 13L/min.
(5) laser head and powder-feeding nozzle are risen to previous cladding layer thickness identical highly, it is ensured that cladding it is new one Layer when defocusing amount with it is consistent before.In the presence of high energy laser beam, layer segment fusing is deposited, while into laser heat affecting The powder in area melt to be formed molten drop fall into molten bath and with molten bath together cooled and solidified, solidified on the basis of first layer cladding layer Cheng Xin sedimentary, successively accumulates afterwards, is completed until prepared by whole TiAl-base alloy drip molding.
(6) Milling Process is carried out to drip molding outer surface, is met the TiAl-base alloy drip molding of surface finish requirements.
Embodiment 2
A kind of fast preparation method of TiAl-base alloy drip molding, its preparation process is as follows：
(1) 50~150 μm of Ti-46Al-2Nb-2Cr alloy powders are dried according to the methods described of embodiment 1.
(2) three-dimensional CAD model of part is pressed into certain thickness hierarchy slicing, is converted to a series of two-dimensional geometry information, According to these information, and it is converted into numerical control table, NC table motion track information.
(3) it will be fixed on the numerical control table, NC table of five-axle linkage, adopt after TC4 titanium alloy substrate surface treateds thick 20mm With 4kW semiconductor laser as laser equipment, process is used as protective atmosphere using argon gas.Effect of the base material in laser Under be partially melting to form molten bath, swash while using synchronous powder feeding system method TiAl-base alloy pre-alloyed powder is entered with certain speed Melted in the heat affected area of light and in the presence of superlaser, form cooled and solidified after molten drop is fallen into molten bath.Workbench is pressed Moved according to the trace information of the given each layer cross sections of CAD in X, Y direction.So that forming molten in the specific region of substrate surface Coating；Machined parameters are：Laser power 2200W, sweep speed 600mm/min, powder feeding rate 5.7g/min, defocusing amount 10mm, Carrier gas flux is 20L/min.
(4) laser head and powder-feeding nozzle are risen to previous cladding layer thickness identical highly.In high energy laser beam Under effect, layer segment fusing is deposited, while the powder into laser heat affected area melts and to form molten drop and fall into molten bath, the New sedimentary is frozen on the basis of one layer of cladding layer.
(5) (3)~(4) step is repeated, is completed until prepared by whole TiAl-base alloy drip molding.
(6) Milling Process is carried out to drip molding outer surface, is met the TiAl-base alloy drip molding of surface finish requirements.
Embodiment 3
A kind of fast preparation method of TiAl-base alloy drip molding, its preparation process is as follows：
(1) 50~150 μm of Ti-43Al-9V-Y alloy powders are dried according to step described in embodiment 1.
(2) three-dimensional CAD model of part is pressed into certain thickness hierarchy slicing, is converted to a series of two-dimensional geometry information, According to these information, and it is converted into numerical control table, NC table motion track information.
(3) it will be fixed on the numerical control table, NC table of five-axle linkage, adopt after TC4 titanium alloy substrate surface treateds thick 10mm With 200W optical fiber laser as laser equipment, process is used as protective atmosphere using argon gas.Effect of the base material in laser Under be partially melting to form molten bath, swash while using synchronous powder feeding system method TiAl-base alloy pre-alloyed powder is entered with certain speed Melted in the heat affected area of light and in the presence of superlaser, form cooled and solidified after molten drop is fallen into molten bath.Workbench is pressed Moved according to the trace information of the given each layer cross sections of CAD in X, Y direction.So that forming molten in the specific region of substrate surface Coating；Machined parameters are：Laser power 200W, sweep speed 80mm/min, powder feeding rate 0.8g/min, defocusing amount 6mm, carrier gas Flow is 13L/min.
(4) laser head and powder-feeding nozzle are risen to previous cladding layer thickness identical highly.In high energy laser beam Under effect, layer segment fusing is deposited, while the powder into laser heat affected area melts and to form molten drop and fall into molten bath, the New sedimentary is frozen on the basis of one layer of cladding layer.
(5) (3)~(4) step is repeated, is completed until prepared by whole TiAl-base alloy drip molding.
(6) Milling Process is carried out to drip molding outer surface, is met the TiAl-base alloy drip molding of surface finish requirements.
Embodiment 4
A kind of fast preparation method of TiAl-base alloy drip molding, its preparation process is as follows：
(1) 50~150 μm of Ti-43Al-9V-Y alloy powders are dried according to step described in embodiment 1.
(2) three-dimensional CAD model of part is pressed into certain thickness hierarchy slicing, is converted to a series of two-dimensional geometry information, According to these information, and it is converted into numerical control table, NC table motion track information.
(3) it will be fixed on the numerical control table, NC table of five-axle linkage, adopt after TC4 titanium alloy substrate surface treateds thick 20mm With 4kW semiconductor laser as laser equipment, process is used as protective atmosphere using argon gas.Effect of the base material in laser Under be partially melting to form molten bath, swash while using synchronous powder feeding system method TiAl-base alloy pre-alloyed powder is entered with certain speed Melted in the heat affected area of light and in the presence of superlaser, form cooled and solidified after molten drop is fallen into molten bath.Workbench is pressed Moved according to the trace information of the given each layer cross sections of CAD in X, Y direction.So that forming molten in the specific region of substrate surface Coating；Machined parameters are：Laser power 2200W, sweep speed 600mm/min, powder feeding rate 5.7g/min, defocusing amount 10mm, Carrier gas flux is 20L/min.
(4) laser head and powder-feeding nozzle are risen to previous cladding layer thickness identical highly.In high energy laser beam Under effect, layer segment fusing is deposited, while the powder into laser heat affected area melts and to form molten drop and fall into molten bath, the New sedimentary is frozen on the basis of one layer of cladding layer.
(5) (3)~(4) step is repeated, is completed until prepared by whole TiAl-base alloy drip molding.
(6) Milling Process is carried out to drip molding outer surface, is met the TiAl-base alloy drip molding of surface finish requirements.
Comparative example 1
The TiAl-base alloy drip molding prepared for the TiAl-base alloy drip molding relatively more of the invention prepared with conventional method Difference on room-temperature mechanical property, is compressed, tensile sample using wire cutting machine cutting, grinds off wire cutting trace after cutting with sand paper Mark simultaneously carries out cleaning removing surface smut in alcohol with ultrasonic activation.Carried out on omnipotent mechanics machine room temperature compression, Tension test, test result is listed in table 1.It can be found that the TiAl-base alloy drip molding prepared using the present invention is compared to casting Method, room-temperature mechanical property has obtained obvious improvement.
TiAl-base alloy room-temperature mechanical property test result prepared by the differing formed method of table 1
In summary, TiAl-base alloy shaping can be effectively solved using present invention preparation TiAl-base alloy drip molding to ask Topic, and entirely forming process is carried out under the control of computer and precision machine tool, obtained size of formed part high precision, and tool Have that production cost is low, curring time is short, stock utilization is high, it is easy to utilize the advantages of drip molding excellent in mechanical performance.

Claims (4)

1. a kind of fast preparation method of TiAl-base alloy drip molding, it is characterised in that comprise the following steps：
Step 1, the three-dimensional entity model of drip molding is set up, the geological information of each cross section is obtained by hierarchy slicing, and turn Turn to numerical control table, NC table motion track information；
Step 2, substrate is fixed on the numerical control table, NC table of five-axle linkage, substrate is partially melting to form in the presence of laser beam Molten bath, while being allowed to melt by the heat affected area that TiAl-base alloy pre-alloyed powder sends into laser using synchronous powder feeding system method so that In substrate surface formation first layer cladding layer；
Step 3, laser head and powder-feeding nozzle are risen to cladding layer thickness identical highly, laser beam will enter heat affected area Powder heat and melt, new sedimentary is frozen on the basis of first layer cladding layer, is successively accumulated afterwards, is finally given 3D solid drip molding；
Step 4, Milling Process is carried out to drip molding outer surface, is met the drip molding of surface finish requirements.
2. the method as described in claim 1, it is characterised in that in step 2, TiAl-base alloy pre-alloyed powder is particle size range Spherical powder between 50~150 μm.
3. the method as described in claim 1, it is characterised in that in step 2, using argon gas as whole process protection atmosphere, wherein Laser processing parameter is：Laser power is：200~2200W, sweep speed is：80~1080mm/min, powder feeding rate is 0.8 ~5.7g/min, defocusing amount is 6~10mm.
4. the method as described in claim 1, it is characterised in that in step 2, the generation equipment of laser beam is CO2Laser, Nd： YAG laser, optical fiber laser or semiconductor laser.
CN201710136804.8A 2017-03-09 2017-03-09 A kind of fast preparation method of TiAl-base alloy drip molding Pending CN106956000A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112872364A (en) * 2021-01-11 2021-06-01 上海大学 Method and device for 3D printing of gamma-TiAl alloy in static magnetic field
CN115261658A (en) * 2022-08-19 2022-11-01 北京理工大学 Additive manufacturing method of high-performance titanium-aluminum alloy with fine-grain full-lamellar structure
CN115491673A (en) * 2022-09-30 2022-12-20 无锡市江南橡塑机械有限公司 Preparation method and repair method of self-lubricating wear-resistant coating of rubber mechanical screw

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542173A (en) * 2003-11-10 2004-11-03 北京航空航天大学 Method for preparation of directional growth columnar crystal and monocrystal titanium alloy
CN1883852A (en) * 2005-06-22 2006-12-27 中国航空工业第一集团公司北京航空制造工程研究所 Ni-base alloy powder laser melt-cladding sinter forming method
CN103495729A (en) * 2013-09-03 2014-01-08 航天特种材料及工艺技术研究所 Laser three-dimensional forming method of large-size titanium-aluminum-based alloy
CN103949639A (en) * 2014-05-19 2014-07-30 北京航空航天大学 Method for preparing Nb-Si based superhigh-temperature alloy by SLM (selective laser melting) technology
DE102014203711A1 (en) * 2014-02-28 2015-09-03 MTU Aero Engines AG Generation of residual compressive stresses in generative production
DE102015115962A1 (en) * 2015-07-10 2017-01-12 GEFERTEC GmbH Process for producing a metallic material mixture in additive manufacturing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1542173A (en) * 2003-11-10 2004-11-03 北京航空航天大学 Method for preparation of directional growth columnar crystal and monocrystal titanium alloy
CN1883852A (en) * 2005-06-22 2006-12-27 中国航空工业第一集团公司北京航空制造工程研究所 Ni-base alloy powder laser melt-cladding sinter forming method
CN103495729A (en) * 2013-09-03 2014-01-08 航天特种材料及工艺技术研究所 Laser three-dimensional forming method of large-size titanium-aluminum-based alloy
DE102014203711A1 (en) * 2014-02-28 2015-09-03 MTU Aero Engines AG Generation of residual compressive stresses in generative production
CN103949639A (en) * 2014-05-19 2014-07-30 北京航空航天大学 Method for preparing Nb-Si based superhigh-temperature alloy by SLM (selective laser melting) technology
DE102015115962A1 (en) * 2015-07-10 2017-01-12 GEFERTEC GmbH Process for producing a metallic material mixture in additive manufacturing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张永忠等: "激光熔化沉积γ-TiAl合金的组织及力学性能", 《中国激光》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112872364A (en) * 2021-01-11 2021-06-01 上海大学 Method and device for 3D printing of gamma-TiAl alloy in static magnetic field
CN115261658A (en) * 2022-08-19 2022-11-01 北京理工大学 Additive manufacturing method of high-performance titanium-aluminum alloy with fine-grain full-lamellar structure
CN115491673A (en) * 2022-09-30 2022-12-20 无锡市江南橡塑机械有限公司 Preparation method and repair method of self-lubricating wear-resistant coating of rubber mechanical screw

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Application publication date: 20170718