CN107649684A - A kind of 3D printing method - Google Patents
A kind of 3D printing method Download PDFInfo
- Publication number
- CN107649684A CN107649684A CN201711040285.1A CN201711040285A CN107649684A CN 107649684 A CN107649684 A CN 107649684A CN 201711040285 A CN201711040285 A CN 201711040285A CN 107649684 A CN107649684 A CN 107649684A
- Authority
- CN
- China
- Prior art keywords
- green compact
- sintering
- printing
- printing method
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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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
- B22F10/16—Formation of a green body by embedding the binder within the powder bed
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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
- B22F10/34—Process control of powder characteristics, e.g. density, oxidation or flowability
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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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
-
- 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
- B22F2201/00—Treatment under specific atmosphere
- B22F2201/20—Use of vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of 3D printing method, specifically implement according to following steps：It is prepared by step 1, thermoplastic molding's metal dust compound；Step 2：It is broken；Step 3：3D printing forming metal parts green compact；Step 4：Parts green compact molding adhesive removes；Step 5：Vacuum-sintering after parts green compact molding adhesive is removed, it is costly that the present invention solves 3D printing technique present in prior art, the problem of plant maintenance complexity.
Description
Technical field
The invention belongs to 3D printing technique field, and in particular to a kind of 3D printing method.
Background technology
3D printing production technology belongs to one kind of near-net-shape increases material manufacturing technology, and its principle is that computer is set by software
The three-dimensional parts sterogram of meter resolves into some layer plane sections, is printed out by 3D printer, produces unlike material
Required parts product；Because its flexibility, customization, quick near-net-shape produce all of baroque unlike material parts
More advantages, turn into a kind of increases material manufacturing technology of great development prospect, especially in integrated manufacturing system (IMS) global formation, directly raw
Possess peculiar advantage in terms of production high-performance complexity metallic element integral module.
Similar 3D printing near-net-shape increasing material manufacturing manufacturing technology is developed rapidly in the whole world at present, tentatively commercial
The production method of change mainly has laser stereoforming method, selective laser sintering process, selective electronic beam sintering process, watery fusion
Lamination method etc..
3D printing selective laser/electron-beam sintering method technique is to utilize dusty material, mainly there is thermal plastic high polymer material
Feed powder end, metal dust, ceramic powders etc., laser/electron beam is to powder layering progress selective interface under the control of the computer
Irradiation sintering, and layer upon layer is molded, and is one of main method of increasing material manufacturing near-net-shape, it is any can to produce various material
The parts of 3D shape.
Because metal molten or sintering temperature are high, the laser generator used in laser formation method and electron-beam sintering method
Power or electron beam occur that power is very big, the laser generator power of selective laser sintering process typically in more than 200W,
Superpower laser production technology difficulty is big, costly, and extensive commercial investment is big, and plant maintenance is complicated, and threshold is high.It is and sharp
Having been become a reality with the 3D printing production metallic element equipment and technique of a kind of inexpensive mode of Partial mature technological development needs
Ask.
The content of the invention
It is an object of the invention to provide a kind of 3D printing method, solves 3D printing technique cost present in prior art
Costliness, the problem of plant maintenance complexity.
The technical solution adopted in the present invention is a kind of 3D printing method, specifically to implement according to following steps：
It is prepared by step 1, thermoplastic molding's metal dust compound；
Step 2：It is broken；
Step 3：3D printing forming metal parts green compact；
Step 4：Parts green compact molding adhesive removes；
Step 5：Vacuum-sintering after removing parts green compact molding adhesive.
The features of the present invention also resides in,
Step 1 is specific as follows：
Step 1.1, selection average grain diameter are 10~20 μm of titanium alloy alpha+beta alloy powder；
Step 1.2, thermoplastic molding's Binder Composition：The polyethylene of 20~30% paraffin+70~80%；
Step 1.3, it is kneaded：30~50% metal dust contents and 50~70% molding adhesive volume contents, with 3~4
Kilogram extruders, compound is kneaded 15~18 hours below 100 DEG C of temperature.
Step 2 is specific as follows：
The metal dust mixing of kneading is agglomerating, and subparticle, 55~60um of Control granularity are broken into using airslide disintegrating mill.
Step 3 is specific as follows：
Step 3.1, laser sintered 3D printer, below 180 DEG C, Photocopy Room temperature control exists laser sintered temperature control
Within 70 DEG C, there is the metal dust compound of thermoplastic characteristics powder surface treating adhesive is produced under the irradiation of laser facula and melt
Change-cooled and solidified process, and layer upon layer is molded.
Step 3.2, design the 3-dimensional metal parts product to be printed in a computer using professional 3D printing software
Model, print parameters, 3D printer printing shaping parts green compact are set.
Step 4 is specific as follows：In special thermal debinding furnace, the binding agent in metallic element green compact is heated removing, this
During setting heating process curve, control heating rate, ensure that binding agent removing is clean, parts green compact are indeformable.
Step 5 is specific as follows：
The titanium alloy member green compact of removing binding agent are put into vacuum sintering furnace, according to this titanium alloy material, liquid-phase sintering temperature
Degree is set as 1000~1100 DEG C, formulates sintering temperature curve, and parts green compact are carried out with high temperature sintering, and green product sintering is received
Contracting is fine and close alloying, produces the titanium alloy parts product of certain mechanical performance.
The invention has the advantages that parts green compact are carried out densification high temperature sintering, green compact by a kind of 3D printing method
Product sintering shrinkage is densified, and produces the parts product of certain mechanical performance.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of 3D printing method of the present invention, specifically implements according to following steps：
It is prepared by step 1, thermoplastic molding's metal dust compound；
Step 2：It is broken；
Step 3：3D printing forming metal parts green compact；
Step 4：Parts green compact molding adhesive removes；
Step 5：Vacuum-sintering after removing parts green compact molding adhesive.
Wherein, step 1 is specific as follows：
Step 1.1, selection average grain diameter are 10~20 μm of titanium alloy alpha+beta alloy powder；
Step 1.2, thermoplastic molding's Binder Composition：The polyethylene of 20~30% paraffin+70~80%；
Step 1.3, it is kneaded：30~50% metal dust contents and 50~70% molding adhesive volume contents, with 3~4
Kilogram extruders, compound is kneaded 15~18 hours below 100 DEG C of temperature.
Step 2 is specific as follows：
The metal dust mixing of kneading is agglomerating, and subparticle, 55~60um of Control granularity are broken into using airslide disintegrating mill.
Step 3 is specific as follows：
Step 3.1, laser sintered 3D printer, below 180 DEG C, Photocopy Room temperature control exists laser sintered temperature control
Within 70 DEG C, there is the metal dust compound of thermoplastic characteristics powder surface treating adhesive is produced under the irradiation of laser facula and melt
Change-cooled and solidified process, and layer upon layer is molded.
Step 3.2, design the 3-dimensional metal parts product to be printed in a computer using professional 3D printing software
Model, print parameters, 3D printer printing shaping parts green compact are set.
Step 4 is specific as follows：In special thermal debinding furnace, the binding agent in metallic element green compact is heated removing, this
During setting heating process curve, control heating rate, ensure that binding agent removing is clean, parts green compact are indeformable.
Step 5 is specific as follows：
The titanium alloy member green compact of removing binding agent are put into vacuum sintering furnace, according to this titanium alloy material, liquid-phase sintering temperature
Degree is set as 1000~1100 DEG C, formulates sintering temperature curve, and parts green compact are carried out with high temperature sintering, and green product sintering is received
Contracting is fine and close alloying, produces the titanium alloy parts product of certain mechanical performance.
The technical method of invention is used not only for the 3D printing production of metal above, and the 3D printing of various ceramic materials is also suitable
In 3D printing production used in the technology of the present invention.
Claims (6)
- A kind of 1. 3D printing method, it is characterised in that specifically implement according to following steps：It is prepared by step 1, thermoplastic molding's metal dust compound；Step 2：It is broken；Step 3：3D printing forming metal parts green compact；Step 4：Parts green compact molding adhesive removes；Step 5：Vacuum-sintering after removing parts green compact molding adhesive.
- 2. a kind of 3D printing method according to claim 1, it is characterised in that the step 1 is specific as follows：Step 1.1, selection average grain diameter are 10~20 μm of titanium alloy alpha+beta alloy powder；Step 1.2, thermoplastic molding's Binder Composition：The polyethylene of 20~30% paraffin+70~80%；Step 1.3, it is kneaded：30~50% metal dust contents and 50~70% molding adhesive volume contents, with 3~4 kilograms Extruders, are kneaded compound 15~18 hours below 100 DEG C of temperature.
- 3. a kind of 3D printing method according to claim 1, it is characterised in that the step 2 is specific as follows：The metal dust mixing of kneading is agglomerating, and subparticle, 55~60um of Control granularity are broken into using airslide disintegrating mill.
- 4. a kind of 3D printing method according to claim 1, it is characterised in that the step 3 is specific as follows：Step 3.1, laser sintered 3D printer, laser sintered temperature control is below 180 DEG C, and Photocopy Room temperature control is at 70 DEG C Within, have thermoplastic characteristics metal dust compound is produced under the irradiation of laser facula powder surface treating adhesive thawing- Cooled and solidified process, and layer upon layer is molded；Step 3.2, design the 3-dimensional metal parts product model to be printed in a computer using professional 3D printing software, Print parameters, 3D printer printing shaping parts green compact are set.
- 5. a kind of 3D printing method according to claim 1, it is characterised in that the step 4 is specific as follows：In special heat In debinding furnace, the binding agent in metallic element green compact is heated removing, setting heating process curve during this, control heating Speed, ensure that binding agent removing is clean, parts green compact are indeformable.
- 6. a kind of 3D printing method according to claim 1, it is characterised in that the step 5 is specific as follows：The titanium alloy member green compact of removing binding agent are put into vacuum sintering furnace, and according to this titanium alloy material, liquid phase sintering conditions are set It is set to 1000~1100 DEG C, formulates sintering temperature curve, parts green compact are carried out with high temperature sintering, green product sintering shrinkage causes Densification alloying, produce the titanium alloy parts product of certain mechanical performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040285.1A CN107649684A (en) | 2017-10-31 | 2017-10-31 | A kind of 3D printing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040285.1A CN107649684A (en) | 2017-10-31 | 2017-10-31 | A kind of 3D printing method |
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| CN107649684A true CN107649684A (en) | 2018-02-02 |
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| CN201711040285.1A Pending CN107649684A (en) | 2017-10-31 | 2017-10-31 | A kind of 3D printing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889675A (en) * | 2019-05-06 | 2020-11-06 | 肯纳金属公司 | Sintered gold product and method for producing same |
| CN112961457A (en) * | 2020-05-11 | 2021-06-15 | 深圳市光韵达增材制造研究院 | 3D printing method |
| CN113770376A (en) * | 2021-07-28 | 2021-12-10 | 北京科技大学 | Method for preparing stainless steel parts based on feeding printing |
Citations (6)
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| CN103769587A (en) * | 2013-11-28 | 2014-05-07 | 王利民 | Method and device for producing metal 3D printing method product |
| CN103769586A (en) * | 2013-11-26 | 2014-05-07 | 王利民 | Metal 3D printing product production method by means of low-power laser sintering |
| CN104647757A (en) * | 2015-01-26 | 2015-05-27 | 刘轶 | Manufacturing method for 3D (three-dimensional) printing shoe pad |
| DE102014226839A1 (en) * | 2014-12-22 | 2016-06-23 | Siemens Aktiengesellschaft | Method for the generative production of a workpiece |
| CN105880583A (en) * | 2016-04-18 | 2016-08-24 | 四川大学 | Composite wire for manufacturing titanium product through 3D printing and preparation method of composite wire |
| CN106735186A (en) * | 2016-12-07 | 2017-05-31 | 北京科技大学 | A kind of method that 3D printing isostatic cool pressing prepares titanium alloy multi-stage gear |
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2017
- 2017-10-31 CN CN201711040285.1A patent/CN107649684A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103769586A (en) * | 2013-11-26 | 2014-05-07 | 王利民 | Metal 3D printing product production method by means of low-power laser sintering |
| CN103769587A (en) * | 2013-11-28 | 2014-05-07 | 王利民 | Method and device for producing metal 3D printing method product |
| DE102014226839A1 (en) * | 2014-12-22 | 2016-06-23 | Siemens Aktiengesellschaft | Method for the generative production of a workpiece |
| CN104647757A (en) * | 2015-01-26 | 2015-05-27 | 刘轶 | Manufacturing method for 3D (three-dimensional) printing shoe pad |
| CN105880583A (en) * | 2016-04-18 | 2016-08-24 | 四川大学 | Composite wire for manufacturing titanium product through 3D printing and preparation method of composite wire |
| CN106735186A (en) * | 2016-12-07 | 2017-05-31 | 北京科技大学 | A kind of method that 3D printing isostatic cool pressing prepares titanium alloy multi-stage gear |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889675A (en) * | 2019-05-06 | 2020-11-06 | 肯纳金属公司 | Sintered gold product and method for producing same |
| CN112961457A (en) * | 2020-05-11 | 2021-06-15 | 深圳市光韵达增材制造研究院 | 3D printing method |
| CN113770376A (en) * | 2021-07-28 | 2021-12-10 | 北京科技大学 | Method for preparing stainless steel parts based on feeding printing |
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Application publication date: 20180202 |