CN109648081A - A kind of laser gain material manufacture manufacturing process of five mold materials mechanical performance of In-sltu reinforcement - Google Patents
A kind of laser gain material manufacture manufacturing process of five mold materials mechanical performance of In-sltu reinforcement Download PDFInfo
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- CN109648081A CN109648081A CN201910034811.6A CN201910034811A CN109648081A CN 109648081 A CN109648081 A CN 109648081A CN 201910034811 A CN201910034811 A CN 201910034811A CN 109648081 A CN109648081 A CN 109648081A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 56
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- 239000000843 powder Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 45
- 239000011159 matrix material Substances 0.000 claims abstract description 42
- 239000012779 reinforcing material Substances 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
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- 150000001875 compounds Chemical class 0.000 claims abstract description 14
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- 238000013461 design Methods 0.000 claims abstract description 9
- 238000012216 screening Methods 0.000 claims abstract description 7
- 239000008187 granular material Substances 0.000 claims abstract description 4
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- 238000006056 electrooxidation reaction Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 10
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- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
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Classifications
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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
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
-
- B22F1/0003—
-
- 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
- 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
- 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
- B33Y70/00—Materials specially adapted for 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
- B22F10/32—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
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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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/366—Scanning parameters, e.g. hatch distance or scanning strategy
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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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/62—Treatment of workpieces or articles after build-up by chemical 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
- 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
- B22F12/10—Auxiliary heating means
- B22F12/17—Auxiliary heating means to heat the build chamber or platform
-
- 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 belongs to advanced manufacture correlative technology fields, it discloses a kind of laser gain materials of five mold materials mechanical performance of In-sltu reinforcement to manufacture manufacturing process, method includes the following steps: (1) provides matrix powder material, and in the surface doping reinforcing material of the matrix powder material to obtain pre-mixed material, and then screening process is carried out to obtain mixing material to the pre-mixed material；(2) design of Print direction is carried out to the threedimensional model of five mold materials constitutional detail to be manufactured and hierarchy slicing is handled, and then according to the threedimensional model, the melt-processed manufacture five mold materials constitutional detail in selective laser is carried out using the mixing material；Wherein, reaction in-situ occurs under the effect of the laser for the matrix powder material and the reinforcing material to generate noval chemical compound, which is located at the granule boundary of the matrix powder material in the form that space uniform is distributed.Simple process of the invention improves the mechanical performance of five mold materials constitutional details, reduces costs.
Description
Technical field
The invention belongs to advanced manufacture correlative technology fields, mechanical more particularly, to a kind of five mold materials of In-sltu reinforcement
The laser gain material of performance manufactures manufacturing process.
Background technique
Meta Materials are a kind of novel synthetic materials, are usually arranged by periodical or acyclic artificial micro-structure
It arranges, there is peculiar physical property not available for natural material.Five mold materials (Pentamode Material, PM) are one
Kind Novel meta-material, is the material that elastic matrix only has that a characteristic value is not zero, is a kind of elastic fluid of degeneration；It can only
The stress state proportional to feature stresses is born, can be flowed under shear stress as fluid under remaining stress state
It is dynamic, therefore five mold materials are also a kind of complex fluid with solid state properties.It is close with hydrodynamic performance using five mold materials
Characteristic, be prepared as the shell of the underwater kits such as submarine, when active sonar detection come when, five mold materials shell mechanism screens
Detection sound wave is covered, the effect of " stealthy cape " can be functioned well as.In addition to " stealthy cape ", five mold materials can also be used in acoustics
The a series of new acoustics such as black hole, acoustics super lens, high directivity high-gain underwater acoustic transducer, the high acoustical transimittivity pod of wideband
The preparation of equipment.The structure design and Study on Preparation Technology for carrying out five mold materials, for exploitation high-performance water acoustic device, improve me
The operational performance of state's equipment has great importance.
However, there is knot since five mold materials are made of hundreds of periodical or acyclic micro-structure
The feature of structure complexity, using conventional (casting, forging, machining) more difficult progress labyrinth forming of method, if piecemeal adds
Work is easily reduced the mechanical property of one-piece parts, and can waste a large amount of precious metal, and manufacturing cost is high.In addition, with state
Family and urgent need of the marine industry to underwater kits such as high-performance submarines, current existing underwater sound device is far from meeting off-lying sea
The demand of strategy.Correspondingly, there is the five mold materials mechanical performances of In-sltu reinforcement for developing a kind of better mechanical property for this field
Laser gain material manufacture manufacturing process technical need.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, it is mechanical that the present invention provides a kind of five mold materials of In-sltu reinforcement
A kind of machinery is studied and devised to the laser gain material manufacture manufacturing process of performance based on the preparation characteristic of existing five mold materials
The laser gain material of better performances manufactures manufacturing process.The manufacturing process is by laser heat action metallic composite original occurs
Position reaction and generating reinforced phase enhances the mechanical performance of five mold materials in form that continuous uniform is distributed.
To achieve the above object, the present invention provides a kind of manufactures of the laser gain material of five mold materials mechanical performance of In-sltu reinforcement
Manufacturing process, the manufacturing process the following steps are included:
(1) matrix powder material is provided, and in the surface doping reinforcing material of described matrix dusty material to be premixed
Condensation material, and then screening process is carried out to obtain mixing material to the pre-mixed material；
(2) threedimensional model of five mold materials constitutional detail to be manufactured is carried out at design and the hierarchy slicing of Print direction
Reason, and then according to the threedimensional model, melt-processed manufacture five mold materials in selective laser is carried out using the mixing material
Constitutional detail；Wherein, reaction in-situ occurs under the effect of the laser for described matrix dusty material to generate with the reinforcing material
Noval chemical compound, the noval chemical compound are located at the granule boundary of described matrix dusty material in the form that space uniform is distributed.
It further, further include that five mould is removed using bead or the method for electrochemical corrosion after step (2)
The step of adhering powder on material structure part.
Further, the screened powder diameter for handling obtained mixing material is 20 μm~50 μm.
Further, in step (2), the mixing material is placed in the melting unit of selective laser, and is swashed to described
The forming board of light selective melting equipment carries out the pre-heat treatment, just carries out after being completed at the same time the vacuumizing of the processing case of the equipment
The melt-processed manufacture in selective laser.
Further, the preheating temperature that the pre-heat treatment uses is 0 DEG C~200 DEG C.
Further, the preheating temperature is 200 DEG C.
Further, the Scan slice thickness of the laser is 0.05mm, sweep span 0.12mm.
Further, described matrix dusty material is Ti6Al4V, and the reinforcing material is TiB2。
Further, for the laser power used for 280W~320W, scanning speed is 700mm/s~900mm/s.
Further, described matrix dusty material is Ti6Al4V, and the reinforcing material is Ni.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, original provided by the invention
The laser gain material manufacture manufacturing process of five mold materials mechanical performances of position enhancing mainly has the advantages that
1. selective laser melting process has very big technical advantage in terms of the part of molding elaborate, with five mold materials
Structural model, which carries out the forming of selective laser melting process, ensure that the stealthy function of acoustics；Matrix powder is doped to using reinforcing material
In, under the laser action of selective laser fusing, reaction in-situ, the production after reaction in-situ can occur with basis material for reinforcing material
Object is present in original substrate boundary in the form of equally distributed, to improve the mechanical performance of five mold materials structures, reduces into
This.
2. the method operability and strong applicability, in actual application, five mold materials structural models can foundation
The surface shape of underwater kit is designed with the shape, and metallic composite can be selected according to basis material and mechanical property requirements
Different reinforcing materials.
3. five mold materials constitutional details must be manufactured using the method, improve five mold materials compression strength, fatigue limit,
The mechanical performances such as wear-resisting property, corrosion resistant performance are particularly suitable for manufacture navigation deep-sea class complexity high-performance, mechanics and acoustical demands
Key components and parts shell.
4. the simple process of the manufacturing process, easy to implement, with strong applicability, flexibility is higher.
Detailed description of the invention
Fig. 1 is the process of the laser gain material manufacture manufacturing process of five mold materials mechanical performance of In-sltu reinforcement provided by the invention
Schematic diagram.
Fig. 2 is the local process of the laser gain material manufacture manufacturing process of the five mold materials mechanical performance of In-sltu reinforcement in Fig. 1
Schematic diagram.
Fig. 3 be first embodiment of the invention provide five mold materials mechanical performance of In-sltu reinforcement laser gain material manufacture at
The preparation flow schematic diagram for the mixed-powder material that shape method is related to.
Fig. 4 be second embodiment of the invention provide five mold materials mechanical performance of In-sltu reinforcement laser gain material manufacture at
The preparation flow schematic diagram for the mixed-powder material that shape method is related to.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which: 1- matrix powder material
Forming board, 7- liquid metal, 8- enhancing are melted in material, 2- reinforcing material, 3- powder bed, 4- laser, the molten bath 5-, the selective laser 6-
Phase, 9- matrix phase, 13/21-Ti6Al4V powder, 14-TiB2Particle, 15- ball milling hermetically sealed can, 22-Ni particle, 23- magnetron sputtering
Line.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Fig. 1 and Fig. 2 is please referred to, the laser gain material of five mold materials mechanical performance of In-sltu reinforcement provided by the invention manufactures forming
Method, enhancing mechanical property requirements of the manufacturing process according to five mold materials structures in practical applications, in alloy powder table
Face is using the methods of deposition or mechanical alloying doping reinforcing material, and by treated, powder is packed into selective laser melting unit
Powder bed, then vacuumize and be filled with inert gas to reduce oxygen content, selective laser is finally carried out according to preset structural model
Melting process shapes five mold materials constitutional details, is rapidly heated in the fusion process of selective laser in cooling procedure, laser is warm
Effect makes alloy powder and the reinforcing material on surface that reaction in-situ occur, due to reinforcing material uniformly dividing on alloy powder surface
Cloth, so there is the reinforced phase of continuous space uniform distribution on original substrate boundary, and In-sltu reinforcement is mechanical after reaction in-situ
Performance does not change five mold materials structures, and stealthy function is unaffected.
The laser gain material manufacture manufacturing process of above-mentioned five mold materials mechanical performance of In-sltu reinforcement mainly comprises the steps that
Step 1 provides matrix powder material, pre- to obtain in the surface doping reinforcing material of described matrix dusty material
Mixing material.
Specifically, matrix powder material 1 is provided, in the surface doping reinforcing material 2 of described matrix dusty material 1.This reality
It applies in mode, described matrix dusty material 1 is alloy powder, the fusing forming of the selective laser Yi Jinhang.The category of the reinforcing material 2
Property be according to practical enhancing mechanical property requirements come selection, such as when matrix powder material is titanium alloy, resist to increase it
TiB may be selected in Compressive Strength2It for reinforcing material, and is reinforcing material to increase corrosion resistance Ni may be selected.
Doping reinforcing material number can be determined according to powder particle size with reaction in-situ degree；According to matrix powder
The physical attribute and chemical property of powder material and reinforcing material carry out the doping process of selective enhancement material, and chemistry can be selected heavy
The methods of product, magnetron sputtering and mechanical ball mill.
The pre-mixed material is carried out screening process to obtain mixing material by step 2.Specifically, by the premixing
Material carries out screening process, general to require to be about 20 μ to obtain the powder diameter for meeting selective laser fusing forming technology requirement
Then m~50 μm are dried in an oven, the gas being mingled in dusty material and moisture are removed clean.
Step 3 constructs the threedimensional model of five mold materials constitutional detail to be manufactured using three-dimensional software.Specifically, for table
The submarine navigation device of face pattern complexity, five mold materials structure of reasonable design is very crucial, using three-dimensional modelings such as UG, Pro/E
Software design, convenient, efficiency, and it is accurate.Submarine navigation device usually has streamlined contour structure, some possible positions need five
Mold materials structure has certain curved surface features.
According to submarine navigation device model, design five mold materials structure housing part to be formed, design include hull shape and
The selection of support construction, the support construction that should usually select the curved surface of easy processing, selective laser easily to remove after melting.It is commonly designed
Fusing profile surface gradient in selective laser is not less than 45 ° in the process, and is reduced as far as support construction.
Step 4 carries out the design of Print direction to the threedimensional model and hierarchy slicing is handled.Specifically, to handling
The five mold materials structural models arrived carry out Print direction design and hierarchy slicing processing, to obtain five excellent mould materials of surface quality
Expect constitutional detail.
The mixing material is placed in the melting unit of selective laser by step 5, and is carried out at preheating to processing substrate
Reason, is completed at the same time vacuumizing for the processing case of the equipment.Specifically, the mixing material selective laser fusing is placed in set
In standby, the pre-heat treatment then is carried out to forming board 6 to reduce thermal stress collection in process and neutralize powder adhesion effect, and complete
Vacuumizing for case is processed in pairs.In present embodiment, used preheating temperature is 0 DEG C~200 when the forming board 6 preheats
DEG C, preferably 200 DEG C；The selective laser melting unit internal oxygen content is 500ppm or less.
Step 6 is carried out described in the melt-processed manufacture in selective laser according to the threedimensional model using the mixing material
Five mold materials constitutional details, wherein described matrix dusty material occurs in situ anti-under the effect of the laser with the reinforcing material
It should be to generate noval chemical compound, the noval chemical compound is located at the particle side of described matrix dusty material in the form that space uniform is distributed
Boundary.
Specifically, melt-processed to mixing material progress selective laser, being rapidly heated and being quickly cooled down in laser 4
Under effect, strong physical-chemical reaction occurs for described matrix dusty material 1 and the reinforcing material 2, and in-situ preparation has
Enhance the noval chemical compound of mechanical performance, and the noval chemical compound is present in described matrix powder in the form that space uniform is distributed
The granule boundary of material.Wherein, it is formed by liquid metal 7 and is formed with reinforced phase 8 and matrix phase 9, the reinforced phase 8 and institute
Matrix phase 9 is stated to be uniformly distributed in the liquid metal 7.
Suitable processing technology window is selected according to described matrix dusty material, usually to adjust laser power and scanning speed
Based on degree, Scan slice thickness is generally 0.05mm, sweep span 0.12mm, such as using Ti6Al4V as formed substrate material, TiB2For
For reinforcing material, the laser power technological parameter of use is selected as between 280~320W, and scanning speed technological parameter is selected as 700
Between~900mm/s, the TiB on the surface Ti6Al4V in the fusion process of selective laser2Occur under laser action with powdered base
Physical-chemical reaction, and TiB ceramic phase is generated in original substrate boundary reaction in-situ；Using Ni718 as formed substrate material, Ti is
Reinforcing material, laser power technological parameter are chosen as 300~500W, and scanning speed technological parameter is selected as 200~400mm/s,
In selective laser fusion process Central Plains, the Ti of powder can react with matrix powder, and generate in original substrate boundary response
TiNi、Ti2Ni intermetallic compound.
Step 7 removes the adherency powder on five mold materials constitutional details using bead or the method for electrochemical corrosion
End finally obtains five excellent mold materials constitutional details of surface quality.Specifically, using bead to the outer surface of printout
It is handled, to reduce its surface roughness, and then improves precision；The inner surface of printout is using electrochemical etching method come real
The regulation of existing roughness and precision.
Embodiment 1
First embodiment of the invention is come for manufacturing enhancing five mold materials constitutional detail of Ti6Al4V base to In-sltu reinforcement
The laser gain material manufacture manufacturing process of five mold materials mechanical performances is illustrated.Ti6Al4V is near αtitanium alloy, due to its superelevation
Specific strength and excellent corrosion resistance be widely used in the fields such as navigation deep-sea；Five mold materials are acoustic metamaterial, in sound
Learning has wideband adaptability, the designability of structure on stealthy, but the compressive property of the five mold materials structures prepared with titanium alloy
It is also not enough to apply in aircraft under water with wear-resisting property.In order to further increase the compressive property of Ti6Al4V basis material
And wear-resisting property, this example select TiB2As reinforcing material, in the fusion process of selective laser, original position can occur for Ti and B instead
TiB and TiB should be generated2, TiB can enhance the mechanical strength of matrix；TiB2Belong to ceramic material, hardness with higher, to propose
The high wear-resisting property of basis material.
Referring to Fig. 3, the laser gain material for the five mold materials mechanical performance of In-sltu reinforcement that first embodiment of the invention provides
Manufacture manufacturing process mainly comprises the steps that
(1) selecting average particle size is 50 μm of Ti6Al4V powder 13, uniform on its surface using the method for mechanical ball mill
It is embedded in TiB2Particle 14 (average particle size is 5 μm)；Using stainless steel abrading-ball, ratio of grinding media to material 5:1, this process is being full of high-purity argon gas
Ball milling hermetically sealed can 15 in carry out.
(2) mixed-powder material obtained is subjected to 270 mesh screen screening process, selective laser is met with acquisition and is fused into
The powder diameter that shape technique requires, it is general to require about 20~50 μm, then it is dried in 80 DEG C of baking oven, it will
The gas and moisture being mingled in dusty material remove clean.
(3) micro- unit cell quantity and the arrangement side of five mold materials constitutional details are determined according to submarine navigation device contour structures
Formula, unit cell quantity selects 4 × 3 in the present embodiment, no curved surface features requirement；Five mold materials critical feature sizes are respectively node circle
Radius r, honeycomb wall thickness b, pole length a.
(4) five mold materials constitutional detail of Ti6Al4V base is mainly made of honeycomb structure, and model structure complexity determines
Forming direction selects the direction of vertical honeycomb hexagon for forming direction.
(5) above-mentioned original powder powder material is placed in the melting unit of selective laser, then processing substrate is carried out at 200 DEG C
The pre-heat treatment neutralizes powder adhesion effect to reduce thermal stress collection in process, and then completes vacuumizing for processing case, so as to
Carry out print job.
(6) to original powder powder material carry out selective laser it is melt-processed, laser be rapidly heated and rapid cooling effect under
Strong physical-chemical reaction occurs for basis material and reinforcing material, in-situ preparation have the noval chemical compound TiB of reinforcing effect with
TiB2, and the compound is present in original substrate (alpha+beta) boundary in the form that space uniform is distributed.
(7) outer surface of printout is handled using bead, to reduce the surface roughness of printout, in turn
Improve precision；The inner surface of the printout realizes the regulation of roughness and precision using electrochemical etching method.
Embodiment 2
Second embodiment of the invention enhances the five mold materials structure zero of Ti6Al4V base of corrosion resistance and hardness to manufacture
It is illustrated for part come the laser gain material manufacture manufacturing process to five mold materials mechanical performance of In-sltu reinforcement, with five mold materials knots
Structure as submarine navigation device shell be typical engineer application, with this come realize submarine navigation device stealthy function and good machine
Tool performance.This quasi-structure component, usual working environment is deep-sea, seawater corrosion and the reef collision that may occur, to titanium alloy
Material proposes the requirement on more high-corrosion resistance and hardness, in view of the above problems, the present invention is using Ti6Al4V as matrix powder
Material, using Ni as reinforcing material, under the fusing forming of selective laser, the Ti in matrix can occur reaction in-situ with Ni atom and generate
TiNi and TiNi2, wherein TiNi has stronger corrosion resistance, TiNi2With very high hardness, divide to the two disperse simultaneously
Cloth improves the corrosion resistance of matrix powder material, also improves hardness among matrix powder material.
Referring to Fig. 4, the laser gain material for the five mold materials mechanical performance of In-sltu reinforcement that second embodiment of the invention provides
Manufacture manufacturing process mainly comprises the steps that
(1) selecting average particle size is 50 μm of Ti6Al4V alloy powder 21, using the method for magnetron sputtering described
The surface of Ti6Al4V alloy powder 21 is uniformly embedded in Ni particle 22 (average particle size is 3~5 μm).Wherein, magnetron sputtering line 23
Act perpendicularly to the surface of the Ti6Al4V alloy powder 21.
(2) mixed-powder material obtained is subjected to 270 mesh screen screening process, selective laser is met with acquisition and is fused into
The powder diameter that shape technique requires, it is general to require about 20~50 μm, then it is dried in 80 DEG C of baking oven, it will
The gas and moisture being mingled in dusty material remove clean.
(3) arrangement mode of five mold materials constitutional details is determined according to the curved profile structure of submarine navigation device；Curved surface
Five mold materials critical feature sizes are respectively that node radius of circle is ri, honeycomb wall is with a thickness of bi, pole length ai, honeycomb structure
Tilting bar angle is θi。
(4) direction for selecting vertical honeycomb hexagon is forming direction.
(5) above-mentioned original powder powder material is placed in the melting unit of selective laser, then processing substrate is carried out at 200 DEG C
The pre-heat treatment neutralizes powder adhesion effect to reduce thermal stress collection in process.
(6) to original powder powder material carry out selective laser it is melt-processed, laser be rapidly heated and rapid cooling effect under
Strong physical-chemical reaction occurs for basis material and reinforcing material, and reaction in-situ generates the noval chemical compound with reinforcing effect
TiNi and TiNi2, and the compound is present in original substrate (alpha+beta) boundary in the form that space uniform is distributed.
(7) outer surface of printout is handled using bead, to reduce its surface roughness, and then improves essence
Degree, the inner surface of the printout realize the regulation of roughness and precision using electrochemical etching method.
The laser gain material of five mold materials mechanical performance of In-sltu reinforcement provided by the invention manufactures manufacturing process, the forming side
Method first adulterates reinforcing material in matrix powder material, then carries out selective laser melting process according to five mold materials structural models
Printing shaping, reaction in-situ occurs for matrix powder material and reinforcing material in print procedure, has enhancing mechanicalness to generate
The noval chemical compound of energy effect, and the compound is present in original substrate boundary in the form that space continuous uniform is distributed, and is protecting
Under the premise of demonstrate,proving the five stealthy functions of mold materials structure, with the whole mechanical performance for improving five mold materials, simple process is easy to real
It applies, with strong applicability, flexibility is higher.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of laser gain material of five mold materials mechanical performance of In-sltu reinforcement manufactures manufacturing process, which is characterized in that this method packet
Include following steps:
(1) matrix powder material is provided, and in the surface doping reinforcing material of described matrix dusty material to obtain premixing material
Material, and then screening process is carried out to obtain mixing material to the pre-mixed material；
(2) design of Print direction is carried out to the threedimensional model of five mold materials constitutional detail to be manufactured and hierarchy slicing is handled, into
And according to the threedimensional model, the melt-processed manufacture five mold materials structure zero in selective laser is carried out using the mixing material
Part；Wherein, reaction in-situ occurs under the effect of the laser for described matrix dusty material and the reinforcing material to generate new chemical combination
Object, the noval chemical compound are located at the granule boundary of described matrix dusty material in the form that space uniform is distributed.
2. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as described in claim 1 manufactures manufacturing process, feature
It is: further includes that the five mold materials constitutional detail is removed using bead or the method for electrochemical corrosion after step (2)
On adhering powder the step of.
3. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as described in claim 1 manufactures manufacturing process, feature
Be: the screened powder diameter for handling obtained mixing material is 20 μm~50 μm.
4. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as described in claim 1 manufactures manufacturing process, feature
It is: in step (2), the mixing material is placed in the melting unit of selective laser, and selective laser fusing is set
Standby forming board carries out the pre-heat treatment, just carries out selective laser fusing after being completed at the same time the vacuumizing of the processing case of the equipment
Processing and manufacturing.
5. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in claim 4 manufactures manufacturing process, feature
Be: the preheating temperature that the pre-heat treatment uses is 0 DEG C~200 DEG C.
6. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in claim 5 manufactures manufacturing process, feature
Be: the preheating temperature is 200 DEG C.
7. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in any one of claims 1 to 6 manufactures forming side
Method, it is characterised in that: the Scan slice thickness of the laser is 0.05mm, sweep span 0.12mm.
8. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in any one of claims 1 to 6 manufactures forming side
Method, it is characterised in that: described matrix dusty material is Ti6Al4V, and the reinforcing material is TiB2。
9. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in claim 8 manufactures manufacturing process, feature
Be: for the laser power used for 280W~320W, scanning speed is 700mm/s~900mm/s.
10. the laser gain material of five mold materials mechanical performance of In-sltu reinforcement as claimed in any one of claims 1 to 6 manufactures forming side
Method, it is characterised in that: described matrix dusty material is Ti6Al4V, and the reinforcing material is Ni.
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