CN106042408A - Powder material used for 3D printing and powder 3D printing forming method - Google Patents
Powder material used for 3D printing and powder 3D printing forming method Download PDFInfo
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- CN106042408A CN106042408A CN201610458300.3A CN201610458300A CN106042408A CN 106042408 A CN106042408 A CN 106042408A CN 201610458300 A CN201610458300 A CN 201610458300A CN 106042408 A CN106042408 A CN 106042408A
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- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a powder material used for 3D printing and a powder 3D printing forming method. The surface of a powder sectional material is wrapped by a layer of binder, a printing spray head sprays a curing agent and do not need to spray the binder, thereby avoiding blockage of the printing spray head. By adoption of the powder material and the method, the technical problem that the 3D printing spray head is easy to block is solved, products with complicated structures can be printed, no complicated and expensive manufacturing equipment is required, the printing cost is greatly lowered, and application of the 3D printing technology is further popularized.
Description
Technical field
The present invention relates to entity forming technology, be specifically related to a kind of dusty material printed for 3D and powder 3D prints
Manufacturing process.
Background technology
Selective laser sintering (SLS) (Selective Laser Sintering, SLS) is the quick of commercialization the most
Manufacturing process.Its method of work is: the powder that uniform spreading last layer is the thinnest the most on the table, and laser beam is in computer control
Under according to part layering profile be sintered selectively so that powder curing becomes cross sectional shape, one layer complete after work
The working face of cylinder declines a thickness, and power spreading device repaves last layer powder and carries out next layer of sintering on the surface sintered.
This process is repeated up to produce whole threedimensional model.Unnecessary powder is removed after all having sintered, then carry out polishing,
Drying etc. just obtain the part of needs after processing.SLS can use various powders material, such as ceramic material, macromolecular material with
And their composite powder etc..But the defect of the method is to be not suitable for the product that machining shape is special, and uses laser sintered
Costly, and whole preparation process need to carry out preventing metal dust oxidized equipment under vacuum conditions, and environmental requirement is high.
Desktop type nozzle printing technology (Three-dimensional printing, 3DP) is by shower nozzle binding agent
The interface of part " is printed " on dusty material, technique belongs to 3D printing technique based on three-dimensional printing art.Often bond
Complete thick layer, moulding cylinder declines a thickness distance, by supplying the tiling powder feeding of powder feed mechanism and being compacted, carries out the spraying of next layer
Bonding.Due to the intensity of binding agent remaining factor such as relatively low grade, there is following defect in this forming technique: one, product intensity is low, can only
Make concept type model；Two, molded article needs to carry out post processing, complex process mostly.And binding agent easily blocks shower nozzle, maintenance
Frequently, inefficiency.
Laminated entity forming technology (Laminated Object Manufacturing is called for short LOM) is to grind in the world at present
Study carefully one of highly developed quick forming method of technology.It utilizes the thin material scribbling PUR, by laser cutting system according to three
The outline data that Vc AD model slice obtains carries out cutting processing.LOM method is typically to be scribbled PUR by feeding machanism
Thin material is delivered to above workbench, hot pressing mechanism thin material is successively compressed stickup, and laser cutting system installs 3 that computer extracts
Vc AD model cross-sectional profiles cuts out deserved contour line.This formation system has the disadvantages that one, waste material stripping after molding
Peel off from the waste material within difficulty, particularly Complex Parts；Two, tensile strength and the elasticity of paper material prototype are not enough；Three, prototype
Easily moisture expantion, needs after molding to carry out damp-proof treatment；Four, prototypic surface has step texture, need to carry out surface polishing, and become more meticulous
Not enough.
Summary of the invention
The technical problem to be solved be the deficiency existed for above-mentioned prior art and provide novel for
The dusty material of 3D printing and powder 3D printing-forming method, equipment, processing environment are required low by it, and working (machining) efficiency is high.
For solving asking of above-mentioned existence, the present invention provides a kind of dusty material printed for 3D, including: print for 3D
The section bar powder shaped, described section bar powder surface wraps up a layer binder, and described binding agent includes phenolic resin.
By such scheme, described section bar powder is metal, pottery, precoated sand or composite.
By such scheme, described metal is preferably ordinary steel, rustless steel, hard alloy, tungstenio heavv alloy, nickel-base alloy,
Or cobalt-base alloys.
By such scheme, described pottery is preferably tungsten carbide, titanium nitride or aluminium oxide.
By such scheme, described composite is preferably ceramic fiber reinforced ceramic matrix or metal-base composites.
A kind of powder 3D printing-forming method, including:
Step one: Model analysis system is analyzed drawing the data message of every layer of model profile to model, and by every layer
The data information transfer of profile is to control system；
Step 2: one layer of dusty material of uniform spreading on the table, described powder is powder in such scheme；
Step 3: control system, according to outline data information corresponding to current layer, controls sprinkler firming agent, makes current
The powder of layer contour area connects firmly together；
Step 4: workbench declines one layer, repeats step 2 and step 3, until making raw embryo.
By such scheme, described firming agent is preferably hexamethylenamine solution.
By such scheme, also include step 5: life embryo is carried out high temperature sintering, remove binding agent.
By such scheme, also include fast setting step: control system is opened during controlling sprinkler firming agent
Thermal source, heats current layer contour area, or, after raw embryo is made, open thermal source raw embryo is heated.
By such scheme, the data message of described every layer of profile includes the coordinate data of contour line each point and the face of layer cross section
Chromatic number evidence.
The important principle of the present invention is: hexamethylenamine and the reactive modified phenolic resin in bonding agent, Wu Luotuo in firming agent
The formaldehyde that product decomposite reacts with unreacted ortho para active site, and dehydration simultaneously forms methine key bridge, makes resin by thermoplastic
Sex reversal is thermosetting resin, and further polycondensation obtains insoluble insoluble three-dimensional-structure cured product, so that blank extexine
Crust hardening.Sprinkling region is heated during spraying firming agent simultaneously, can accelerate to accelerate hexamethylenamine and decompose
Formaldehyde, adds rapid hardening.It is the fastest that contour area temperature is heated to 160-180 DEG C of curing rate.
The beneficial effects of the present invention is:
The three dimensional structure parts such as 1 compares with powder injection-molded, it is possible to produces and comprises closing cavity, complicated inner cavity；
2, during the raw embryo of product is made, it is only necessary to the binding agent in section bar powder is bonded together, it is not necessary to high
Beam (laser, electron beam, beam-plasma etc.)；
3, a layer binder is wrapped up due to section bar powder surface, during raw embryo is made, it is not necessary to prevent Powder Oxidation,
Therefore, it is not necessary under vacuum or protection environment, processing prevents surface of metal particles from aoxidizing；
4, sprinkler is firming agent, will not block shower nozzle, and equipment failure rate is low, and production efficiency is high；
5, becoming in product process by raw for product embryo high temperature sintering, whole section bar is all by high-temperature process, and its internal stress is little, machine
Tool performance is good, and other metals 3D forming technique growth course is solid-state and liquid metal material coexists, when being finally cooled to room temperature
Produce huge internal stress；
6, product each position shrinkage factor is consistent, and final products precision is high；
7, material is extensive, and including metal, (ordinary steel, rustless steel, hard alloy, tungstenio heavv alloy, nickel-base alloy, cobalt-based closes
Gold etc.), pottery (tungsten carbide, titanium nitride, aluminium oxide etc.), and composite (ceramic fiber reinforced ceramic matrix or Metal Substrate
Composite).
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention
It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
The present invention processed.
The present invention is further described below:
Putting in blade paddle mixer by section bar powder, addition phenol resin solution (binding agent) is stirred, mixed grind, fills
After dividing mix homogeneously, put into storage part cylinder of print system.Phenol resin solution includes that phenolic resin, ethanol, calcium stearate are molten
Agent, wherein phenolic resin addition is the 2-3.5% of section bar powder (mass fraction)；Amount of alcohol added is section bar powder (quality
Mark) 1-1.5%；Calcium stearate addition is the 2-2.8% of section bar powder (mass fraction).Section bar powder can be metal
Powder, ceramic powders or composite powder.
Section bar powder in the present embodiment is ordinary steel powder.
Firming agent is hexamethylenamine aqueous solution, and hexamethylenamine is 1 with the ratio of water (can add color inks in water):
1.6。
Step one: model is processed and show that the data message of every layer of model profile (includes every layer by Model analysis system
The coordinate data of profile and the color data of layer cross section), and by the data information transfer of every layer of profile to control system, data
Information includes the coordinate data of outer contour each point and the color data in cross section；
Step 2: one layer of dusty material of uniform spreading on the table, described powder is powder in such scheme；
Step 3: control system, according to outline data information corresponding to current layer, controls sprinkler hexamethylenamine solution
(firming agent, including), make the powder of current layer contour area connect firmly together, control system controls the mistake of sprinkler firming agent
Opening thermal source in journey, heat current layer contour area, heating-up temperature is 160 DEG C to 180 DEG C, while spraying firming agent
Color data information according to current layer sprays color pigment；
Step 4: workbench declines one layer, repeats step 2 and step 3, until making raw embryo.
Step 5: life embryo carries out high temperature sintering, removes binding agent, makes adjacent profiles powder be bonded together.
Embodiment 2
Difference with embodiment 1 is, described section bar powder is tungsten-carbide powder.
Embodiment 3
Difference with embodiment 1 is, described section bar powder is metal-base composites, during spraying firming agent not
Heating contour area, embryo to be generated is heated to 160 DEG C to 180 DEG C to whole raw embryo after making again, to accelerate solidification.
Claims (10)
1. the dusty material printed for 3D, including: for the section bar powder of 3D printing-forming, it is characterised in that: described
A layer binder is wrapped up on section bar powder surface, and described binding agent includes phenolic resin.
Dusty material the most according to claim 1, it is characterised in that: described section bar powder be metal, pottery, precoated sand or
Composite.
Dusty material the most according to claim 2, it is characterised in that: described metal is preferably ordinary steel, rustless steel, hard
Alloy, tungstenio heavv alloy, nickel-base alloy, or cobalt-base alloys.
Dusty material the most according to claim 2, it is characterised in that: described pottery is preferably tungsten carbide, titanium nitride or oxygen
Change aluminum.
Dusty material the most according to claim 2, it is characterised in that: described composite is preferably ceramic fibre and strengthens pottery
Porcelain base or metal-base composites.
6. a powder 3D printing-forming method, including:
Step one: Model analysis system is analyzed drawing the data message of each layer of profile of model to model, and by every layer of wheel
Wide data information transfer is to control system；
Step 2: one layer of dusty material of uniform spreading on the table, it is characterised in that: described powder is in claim 1 to 5
Any one dusty material；
Step 3: control system, according to outline data information corresponding to current layer, controls sprinkler firming agent, makes current layer take turns
The powder in wide region connects firmly together；
Step 4: workbench declines one layer, repeats step 2 and step 3, until making raw embryo.
Powder 3D printing-forming method the most according to claim 6, it is characterised in that: also include step 5: entered by life embryo
Row high temperature sintering, removes binding agent.
8. according to the powder 3D printing-forming method described in claim 6 or 7, it is characterised in that: also include fast setting step:
Control system opens thermal source during controlling sprinkler firming agent, heats current layer contour area, or, giving birth to
Embryo is opened thermal source and is heated raw embryo after making.
9. according to the powder 3D printing-forming method described in claim 6 or 7, it is characterised in that: described firming agent is preferably crow
Lip river tropine solution.
10. according to the powder 3D printing-forming method described in claim 6 or 7, it is characterised in that: the number of described each layer of profile
It is believed that breath includes the coordinate data of outer contour each point and the color data in cross section.
Priority Applications (1)
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| CN201610458300.3A CN106042408A (en) | 2016-06-22 | 2016-06-22 | Powder material used for 3D printing and powder 3D printing forming method |
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| CN201610458300.3A CN106042408A (en) | 2016-06-22 | 2016-06-22 | Powder material used for 3D printing and powder 3D printing forming method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139314A (en) * | 2017-05-16 | 2017-09-08 | 华中科技大学 | A kind of preparation method of precoated sand mould for ceramic by colloidal molding method |
| CN108161010A (en) * | 2018-02-09 | 2018-06-15 | 广东汉邦激光科技有限公司 | 3D printing method and system based on fast sintering |
| CN108296418A (en) * | 2017-09-29 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of precoated sand and preparation method thereof for 3D printing |
| CN108929113A (en) * | 2017-05-24 | 2018-12-04 | 赵晴堂 | A kind of three-dimensional manufacturing method and forming method for increasing material moulding material |
| CN108943324A (en) * | 2018-07-04 | 2018-12-07 | 华南理工大学 | A kind of 3D printing powder bonding method based on water-soluble effect |
| CN108975862A (en) * | 2018-07-04 | 2018-12-11 | 华南理工大学 | A kind of 3D printing powder bonding method based on neutralization of acid with base |
| CN109108293A (en) * | 2018-09-30 | 2019-01-01 | 南京智能高端装备产业研究院有限公司 | A kind of high efficiency metallic 3DP Method of printing |
| CN110240485A (en) * | 2019-06-21 | 2019-09-17 | 天津大学 | A kind of ceramic increasing material manufacturing method and apparatus based on thermosetting bonding |
| CN110545937A (en) * | 2017-02-16 | 2019-12-06 | 霍加纳斯股份有限公司 | Particles with sinterable nodules and polymer coating, uses thereof, and additive manufacturing process using the same |
| CN116354729A (en) * | 2023-04-12 | 2023-06-30 | 嘉庚(江苏)特材有限责任公司 | SiC ceramic part and preparation method and application thereof |
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| US6048954A (en) * | 1994-07-22 | 2000-04-11 | The University Of Texas System Board Of Regents | Binder compositions for laser sintering processes |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545937A (en) * | 2017-02-16 | 2019-12-06 | 霍加纳斯股份有限公司 | Particles with sinterable nodules and polymer coating, uses thereof, and additive manufacturing process using the same |
| CN116159996A (en) * | 2017-02-16 | 2023-05-26 | 霍加纳斯股份有限公司 | Particle with burnable nodules and polymer coating, uses thereof, and additive manufacturing methods using the same |
| CN107139314A (en) * | 2017-05-16 | 2017-09-08 | 华中科技大学 | A kind of preparation method of precoated sand mould for ceramic by colloidal molding method |
| CN108929113A (en) * | 2017-05-24 | 2018-12-04 | 赵晴堂 | A kind of three-dimensional manufacturing method and forming method for increasing material moulding material |
| CN108296418B (en) * | 2017-09-29 | 2020-04-10 | 柳州市柳晶科技股份有限公司 | Precoated sand for 3D printing and preparation method thereof |
| CN108296418A (en) * | 2017-09-29 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | A kind of precoated sand and preparation method thereof for 3D printing |
| CN108161010A (en) * | 2018-02-09 | 2018-06-15 | 广东汉邦激光科技有限公司 | 3D printing method and system based on fast sintering |
| CN108161010B (en) * | 2018-02-09 | 2024-03-26 | 广东汉邦激光科技有限公司 | 3D printing method and system based on rapid sintering |
| CN108975862A (en) * | 2018-07-04 | 2018-12-11 | 华南理工大学 | A kind of 3D printing powder bonding method based on neutralization of acid with base |
| CN108943324A (en) * | 2018-07-04 | 2018-12-07 | 华南理工大学 | A kind of 3D printing powder bonding method based on water-soluble effect |
| CN109108293A (en) * | 2018-09-30 | 2019-01-01 | 南京智能高端装备产业研究院有限公司 | A kind of high efficiency metallic 3DP Method of printing |
| CN110240485A (en) * | 2019-06-21 | 2019-09-17 | 天津大学 | A kind of ceramic increasing material manufacturing method and apparatus based on thermosetting bonding |
| CN116354729A (en) * | 2023-04-12 | 2023-06-30 | 嘉庚(江苏)特材有限责任公司 | SiC ceramic part and preparation method and application thereof |
| CN116354729B (en) * | 2023-04-12 | 2023-12-01 | 嘉庚(江苏)特材有限责任公司 | SiC ceramic part and preparation method and application thereof |
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