CN108031835A - A kind of ink WC bases stainless steel powder 3D printing base substrate method and its forming method - Google Patents
A kind of ink WC bases stainless steel powder 3D printing base substrate method and its forming method Download PDFInfo
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- CN108031835A CN108031835A CN201711413181.0A CN201711413181A CN108031835A CN 108031835 A CN108031835 A CN 108031835A CN 201711413181 A CN201711413181 A CN 201711413181A CN 108031835 A CN108031835 A CN 108031835A
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/107—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing organic material comprising solvents, e.g. for slip casting
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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
- B22F10/10—Formation of a green body
- B22F10/18—Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF]
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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
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- 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
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- 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
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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
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Abstract
The present invention relates to 3D technology field, discloses a kind of ink WC bases stainless steel powder 3D printing forming method.Comprise the following steps：S1. using organic solvent as carrier, monomers hydroxy ethyl ester, crosslinking agent trimethylolpropane trimethacrylate, additive ethyl acetate, catalyst n are added into organic solvent, N dimethylanilines, the WC base stainless steel powders that volume ratio is 20~65% are added, it is spare to obtain slurry A after ball grinding stirring；S2. preparing can be spare as substance B with the initiator of step S1 organic monomers generation gelling reaction；S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；S4. mixture C is delivered to 3D printing head and gives the focused microwave that organic monomer can be accelerated to polymerize, printed according to three-dimensional modeling data, layer upon layer is molded, and finally obtains the base substrate of required shape.
Description
Technical field
The present invention relates to 3D technology field, more particularly, to a kind of ink WC bases stainless steel powder 3D printing base substrate side
Method and its forming method.
Background technology
3D printing technique is a kind of emerging rapid shaping technique, by being successively superimposed material manufacture 3 D stereo
The technology of structure material object, different from traditional removal material manufacture technology, therefore also known as increasing material manufacturing, 3D printing are main
Selective laser sintering technology (SLS), melting sedimentation (FDM) and Stereo Lithography technology (SLA).
Selective laser sintering and moulding technology (SLS) is that every layer material is preheating to nearly melting point, with the CO of high intensity 2
Laser causes material to sinter immediately, and layer upon layer is molded under the control of the computer.The material of SLS technologies is usually metal powder
End, ceramic powders etc..The advantages of SLS forming techniques is that print speed is fast, is not required to any backing material, obtained metal into
Product good mechanical property, shortcoming is sample precision less and buckling deformation easily occurs, and molding cycle is grown.Be melt into product shaping also by
Manufactured as fuse（Fused Filament Fabrication, FFF）, it is to be added Filamentous thermoplastic by nozzle
Material is squeezed and gushed out to after melting by heat with certain pressure from nozzle, while nozzle is extruded along organic solvent square to moving
Material together with previous aspect clinkering, after the completion of aspect deposition, the height of the next aspect of table vertical after
Continuous to be deposited, final molding goes out complete entity.The material of FDM technologies has two kinds：One kind is entity shaping material；
Another is the backing material for preventing cavity or caving in.The advantages of FDM technologies is free from environmental pollution, and equipment is cheap, material
Expect diversity and utilization rate is high, shortcoming is that finished surface is coarse, and size is limited and shaping speed is slowly, it is necessary to extra fid
Material.Stereo Lithography printing technique (SLA) Stereolithography is the liquid photosensitive irradiated by UV laser beam in resin liquid bath
Resin, makes it reduce workbench after curing and is at the height of the next section thickness of liquid level, be so layering and produce one
The material object of a three-dimensional structure.The printed material that SLA is selected is liquid, and technological merit is that discovery time is earliest, and maturity is higher,
Shaping speed is very fast, and system work is stablized relatively, and due to being free of the thing of particle in the selection of material, dimensional accuracy is high.SLA
Technical disadvantages be equipment costly, system, which operates liquid, to be required harsh, and molded part is mostly resin, and material price is expensive and performance
It is limited, it is unfavorable for storing for a long time, environmental pollution is serious.
For existing 3D printing technique there are the defects of, the present invention gel-casting technology is combined with 3D printing, proposition
A kind of ink 3D printing forming method, the principle of gel injection molding and forming technology is that situ-gel cures, and shaping speed is very fast, can
Near-net-shape complex component, and even green body is good, high mechanical strength, sintering character are excellent, therefore expand gel note
Mold forming technology is combined with 3D printing techniques, it will thus provide a kind of brand-new 3D printing technique, so as to solve existing 3D printing skill
The defects of art, expand and apply the molding Material Fields of 3D significantly.
Chinese patent CN201510257680.X discloses a kind of mixed slurry 3D printing device and its printing shaping method,
Suitable for by metal dust, ceramic powders and composite powder, using liquid state organics as carrier, being shaped to by 3D printing multiple
Miscellaneous shape.There are problems with for the patent：It is poor, it is necessary to borrow by powder raw material and slip fluidity that resin liquid mixes
Ambient pressure is helped to be mixed with curing agent, and the patent can produce substantial amounts of bubble by the means of compressed air, in addition,
Mud is usually diluter to be difficult to cure, and cures low precision, curing precision can not be also improved even if concentration of hydraulic mixture is improved, so as to cause
Shaping is slow, and efficiency is low, and green strength is not high.
The content of the invention
The technical problem to be solved in the present invention in view of the deficiencies of the prior art, introduces casting molding technique, with organic solvent
For carrier, with reference to 3D printing technique, there is provided a kind of brand-new ink WC base stainless steel powder 3D printing base substrate methods.
The present invention also provides a kind of ink WC bases stainless steel powder 3D printing forming method.
The purpose of the present invention is achieved by the following technical programs：
A kind of ink WC bases stainless steel powder 3D printing forming method is provided, is comprised the following steps：
S1. using organic solvent as carrier, monomers hydroxy ethyl ester, crosslinking agent trihydroxy methyl third are added into organic solvent
Alkane triacrylate, additive ethyl acetate, catalyst n, accelerine, adds the WC bases that volume ratio is 20~65%
Stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；
S2. preparing can be spare as substance B with the initiator benzoyl peroxide of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the focused microwave that organic monomer can be accelerated to polymerize so that 3D printing head
Print under the atmosphere of focused microwave, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape
Base substrate.
The principle of the present invention be using high viscosity, high buoyancy organic solvent as carrier, it is stainless to add highdensity WC bases
The preferable powder suspension of dispersiveness is formed after comminuted steel shot body, the powder suspension viscosity is low, and solid concentration is high, good fluidity,
Add organic monomer after, the particles coat in finely dispersed powder suspension is allowed to fixation in situ, thus obtain powder with
The suspension of the composite material of macromolecule organic, the substance B by the way that gelling reaction occurs with organic monomer, which mixes, makes suspension
Organic monomer in body occurs chemical crosslinking or is physical crosslinking into three-dimensional network-like structure, is quickly prepared into reference to 3D printing technique
To advanced base intensity and the base substrate of precision.
Preferably, hydroxyethyl methacrylate addition described in step S1 is 55~65wt%, and the ethyl acetate adds
Measure as 7~9wt%, trimethylolpropane trimethacrylate addition is 8~12wt%, catalyst n, accelerine addition
For 1~3wt%.
Preferably, the defrother of 0.1~1wt% is also added into described in step S1 in organic solvent.
Preferably, the mass ratio of substance B described in step S2 and slurry A are 2 in step S2:90~100.
Preferably, three-dimensional modeling data described in step S4 is to design required planform using 3D sculpting software
Part model, by part model carry out hierarchy slicing processing, synusia thickness is 0.05~0.2mm.
The present invention also provides a kind of ink WC bases stainless steel powder 3D printing forming method, comprise the following steps：Will be above-mentioned
The base substrate that ink WC base stainless steel powder 3D printing base substrate methods are prepared is dried, and obtains high intensity base substrate, Ran Houpai
Glue simultaneously sinters, and obtains final products.
Preferably, the drying refers to base substrate placing 24~72h in room temperature, is then dried in vacuo at 60 DEG C.
Preferably, the dumping and sintering refer to that base substrate keeps the temperature 3h at 600 DEG C and carries out dumping processing, then are placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention for existing 3D printing technique there are the defects of, gel-casting technology is combined with 3D printing, propose one kind
Ink 3D printing forming method, the situ-gel principle of solidification is combined with 3D printing, without proembryo and mold developing, is also not required to add
Work, just can be directly according to computer graphics data, and the method by increasing material generates the complex structure of any shape, should
Method even green body in ensure that gel-casting technology is good, high mechanical strength, excellent sintering character the advantages of at the same time, also pole
The earth improves production efficiency, and the base substrate green strength printed is high, precision is high.
The present invention using low viscosity, high solid volume fraction, good fluidity powder suspension as 3D printing raw material, without
Conveying, mixing and extrusion can be realized in 3D printing equipment by ambient pressure, with cost is low, reliability is high, operational
The advantages that strong, and hardening time is fast, it is high to cure precision, it is easy to accomplish industrialized production.
Brief description of the drawings
Fig. 1 present invention process flow charts.
Fig. 2 present device schematic diagrames.
Embodiment
The present invention provides a kind of ink WC bases stainless steel powder 3D printing forming method, concrete technology method as shown in Figure 1,
Comprise the following steps：
S1. using organic solvent as carrier, monomers hydroxy ethyl ester, crosslinking agent trihydroxy methyl third are added into organic solvent
Alkane triacrylate, additive ethyl acetate, catalyst n, accelerine, adds the WC bases that volume ratio is 20~65%
Stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；
S2. preparing can be spare as substance B with the initiator of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the focused microwave that organic monomer can be accelerated to polymerize so that 3D printing head
Print under the atmosphere of focused microwave, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape
Base substrate；
S6. the obtained base substrates of step S5 are dried, obtain high intensity base substrate, then dumping and sintered, obtain final products.
Wherein, be in step S1 by highdensity WC bases stainless steel powder and water be made into low viscosity, high solid volume fraction,
The powder suspension of good fluidity（According to actual conditions addition dispersant can be selected to improve solid concentration）, and simultaneous selection
Suitable organic monomer is added to component units gelling system in powder suspension, or the suitable organic monomer of selection and crosslinking
Agent, which is added in powder suspension, forms polynary gel rubber system；Substance B is initiator benzoyl peroxide in step S2, step S4
The middle condition that organic monomer can be accelerated to polymerize is focused microwave.
For the above method, ink 3D printing former of the present invention may be designed to as shown in Fig. 2, including slurry tank 1, storage
Batch can 2, mixing tank 3 and 3D printing equipment 4, slurry tank 1, storage tank 2 are connected with mixing tank 3 respectively, and mixing tank 3 is set with 3D printing
First 41 connection of 3D printing in standby 4；
Agitating device 11 is equipped with slurry tank 1, discharge outlet is equipped with metering device 12, and 2 discharge outlet of storage tank is equipped with metering and fills
21 are put, agitating device 31 is equipped with mixing tank 3.
Ink 3D printing former operation principle of the present invention is as follows：It can occur the slurry A prepared and with organic monomer
The substance B of gelling reaction is individually positioned in slurry tank 1 and storage tank 2, if necessary to add initiator and catalyst at the same time, is stored up
Batch can 2 at least needs to prepare 2 separately storage initiator and catalyst, then mixes, can also be directly being starched with slurry respectively
Catalyst is first added in material, slurry, which fills the working status that the agitating device 11 in 1 is kept stirring, prevents slurry A from depositing, it is necessary to beat
When print, three-dimensional modeling data is imported into 3D printing equipment 4, the material in slurry tank 1 and storage tank 2 is respectively by passing through meter
Amount device 12 and metering device 21 prepare be delivered in mixing tank 3 in proportion, and the agitating device 31 in mixing tank 3 keeps work shape
Mixture C, is delivered in the 3D printing head of 3D printing equipment 4 by state after mixing, and 3D printing equipment 4 is according to threedimensional model number
Factually injection prints, and needs to give the focused microwave that 4 interior energy of 3D printing equipment accelerates organic monomer polymerization in print procedure, obtains base
Body is dried again, dumping, sintering, finally obtains product.
Wherein, due to slurry A good fluidities, gravity is passed through（Such as under the control of valve）It can complete to convey, mix
Close, without ambient pressure, it is contemplated that some situations need to accelerate the efficiency of 3D printing, can also be acted on by pressure（Such as note
Penetrate or pump）To accelerate material conveying, mixing.The present invention realizes that the equipment for the condition for accelerating organic monomer polymerization is microwave tube, applies
It is on the print platform of 3D printing equipment to add object.Specific device and structure those skilled in the art can be according to actual feelings
Condition selects and design.
The present invention is further illustrated with reference to specific embodiment.Following embodiments are only illustrative examples, not structure
Into inappropriate limitation of the present invention, the multitude of different ways that the present invention can be limited and covered by the content of the invention is implemented.It is unless special
Do not mentionlet alone bright, the present invention reagent, compound and the equipment that use is the art conventional reagent, compound and equipment.
Embodiment 1
The present embodiment provides a kind of ink WC bases stainless steel powder 3D printing forming method, comprise the following steps：
S1. using organic solvent ethylene glycol as carrier, it is monomers hydroxy ethyl ester to add mass ratio into ethylene glycol
（HEMA）For 60wt%, additive ethyl acetate（EA）For 8wt%, crosslinking agent trimethylolpropane trimethacrylate（TMPTA）For
10wt%, catalyst n, accelerine（DMA）For 2wt%, defrother is 0.1~1wt%, adds the WC that volume ratio is 50%
Base stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；
S2. a certain amount of initiator benzoyl peroxide that can trigger gelling reaction is configured, it is spare to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the focused microwave that organic monomer can be accelerated to polymerize is given in print procedure（By setting microwave tube）, it is micro- focusing on
Printed under the atmosphere of ripple so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
Originally it is embodied as ensureing to be molded soon during 3D printing（Each layer will not produce deformation during layer upon layer）, improve cure speed
Rate and green strength, optimize the proportioning of slurry A, suitably（It is too high to cause impurity excessive on the contrary）Improve the weight of monomer addition
Percentage is measured, and with the addition of additive ethyl acetate（EA）, implement printing under the atmosphere of focused microwave.
Focused microwave is produced by microwave tube in the present embodiment, and design parameter is according to 600 watts~800 watts progress phases of micro-wave oven
The adjustment answered.
The base substrate green strength that the present embodiment is prepared reaches 46MPa, and relative density more than 98% is sintered in normal temperature air.
Embodiment 2
The present embodiment provides a kind of ink WC bases stainless steel powder 3D printing forming method, comprise the following steps：
S1. using organic solvent ethylene glycol as carrier, it is monomers hydroxy ethyl ester to add mass ratio into ethylene glycol
（HEMA）For 55wt%, additive ethyl acetate（EA）For 7wt%, crosslinking agent trimethylolpropane trimethacrylate（TMPTA）For
8wt%, catalyst n, accelerine（DMA）For 1wt%, defrother is 0.1~1wt%, adds the WC that volume ratio is 50%
Base stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；
S2. a certain amount of initiator benzoyl peroxide that can trigger gelling reaction is configured, it is spare to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the focused microwave that organic monomer can be accelerated to polymerize is given in print procedure（By setting microwave tube）, it is micro- focusing on
Printed under the atmosphere of ripple so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 37MPa, and relative density more than 97% is sintered in normal temperature air.
Embodiment 3
The present embodiment provides a kind of ink WC bases stainless steel powder 3D printing forming method, comprise the following steps：
S1. using organic solvent ethylene glycol as carrier, it is monomers hydroxy ethyl ester to add mass ratio into ethylene glycol
（HEMA）For 65wt%, additive ethyl acetate（EA）For 9wt%, crosslinking agent trimethylolpropane trimethacrylate（TMPTA）For
12wt%, catalyst n, accelerine（DMA）For 3wt%, defrother is 0.1~1wt%, adds the WC that volume ratio is 50%
Base stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；
S2. a certain amount of initiator benzoyl peroxide that can trigger gelling reaction is configured, it is spare to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain mixture C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the focused microwave that organic monomer can be accelerated to polymerize is given in print procedure（By setting microwave tube）, it is micro- focusing on
Printed under the atmosphere of ripple so that mixture C cures rapidly, layer upon layer shaping, finally obtains the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, keeps the temperature 3h at 600 DEG C by high intensity base substrate and carries out dumping processing, then be placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 42MPa, and relative density more than 98% is sintered in normal temperature air.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, and difference is, the volume integral of WC bases stainless steel powder described in step S1
Number is 65%.
The present embodiment changes WC base stainless steel powder volume fractions, and the base substrate green strength being prepared reaches 45MPA,
Relative density is obtained after sintering and reaches more than 98%.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, and difference is, the volume integral of WC bases stainless steel powder described in step S1
Number is 20%.
The present embodiment changes WC base stainless steel powder volume fractions, and the base substrate green strength being prepared reaches 35MPA,
Relative density is obtained after sintering and reaches more than 97%.
Claims (8)
- A kind of 1. ink WC bases stainless steel powder 3D printing base substrate method, it is characterised in that comprise the following steps：S1. using organic solvent as carrier, monomers hydroxy ethyl ester, crosslinking agent trihydroxy methyl third are added into organic solvent Alkane triacrylate, additive ethyl acetate, catalyst n, accelerine, adds the WC bases that volume ratio is 20~65% Stainless steel powder, it is spare to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；S2. preparing can be spare as substance B with the initiator benzoyl peroxide of step S1 organic monomers generation gelling reaction；S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；S4. mixture C is delivered to 3D printing head and gives the focused microwave that organic monomer can be accelerated to polymerize so that 3D printing head Print under the atmosphere of focused microwave, printed according to three-dimensional modeling data, layer upon layer shaping, finally obtains required shape Base substrate.
- 2. ink WC bases stainless steel powder 3D printing base substrate method according to claim 1, it is characterised in that institute in step S1 It is 55~65wt% to state hydroxyethyl methacrylate addition, and the ethyl acetate addition is 7~9wt%, trimethylolpropane Triacrylate addition is 8~12wt%, and catalyst n, accelerine addition is 1~3wt%.
- 3. ink WC bases stainless steel powder 3D printing base substrate method according to claim 1, it is characterised in that institute in step S1 State the defrother that 0.1~1wt% is also added into organic solvent.
- 4. ink WC bases stainless steel powder 3D printing base substrate method according to claim 1, it is characterised in that walked in step S2 The mass ratio of substance B described in rapid S2 and slurry A are 2:90~100.
- 5. ink WC bases stainless steel powder 3D printing base substrate method according to claim 1, it is characterised in that institute in step S4 It is the part model that required planform is designed using 3D sculpting software to state three-dimensional modeling data, and part model is divided Layer slicing treatment, synusia thickness is 0.05~0.2mm.
- 6. a kind of ink WC bases stainless steel powder 3D printing forming method, it is characterised in that comprise the following steps：By claim The base substrate that ink WC bases stainless steel powder 3D printing base substrate method described in 1~5 any one is prepared is dried, and obtains height Intensity base substrate, then dumping and sinters, obtains final products.
- 7. ink WC bases stainless steel powder 3D printing forming method according to claim 6, it is characterised in that the drying is Refer to and base substrate is being placed into 24~72h in room temperature, be then dried in vacuo at 60 DEG C.
- 8. ink WC bases stainless steel powder 3D printing forming method according to claim 6, it is characterised in that the dumping is simultaneously Sintering refers to that base substrate keeps the temperature 3h at 600 DEG C and carries out dumping processing, then places under vacuum, and temperature is at 1000~1300 DEG C Sinter 2h.
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| CN201711413181.0A CN108031835A (en) | 2017-12-24 | 2017-12-24 | A kind of ink WC bases stainless steel powder 3D printing base substrate method and its forming method |
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