CN103769587A - Method and device for producing metal 3D printing method product - Google Patents
Method and device for producing metal 3D printing method product Download PDFInfo
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- CN103769587A CN103769587A CN201310611874.6A CN201310611874A CN103769587A CN 103769587 A CN103769587 A CN 103769587A CN 201310611874 A CN201310611874 A CN 201310611874A CN 103769587 A CN103769587 A CN 103769587A
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Abstract
The invention discloses a method and device for producing a metal 3D printing product. A low-melting-point thermoplastic 3D metal printing raw material mixture is prepared by adopting a method of combination between metal powder materials and forming adhesives, a 3D printer (please see the 3D printer in the figure) using a commercial FDM is slightly modified, a metal part product blank can be printed by using the prepared metal printing raw material mixture, the forming adhesives in a blank part are removed by using a thermal debinding method or a chemocatalysis debinding method or other technologies, high-temperature sintering is carried out on the blank without the forming adhesives by using a vacuum sintering method or an atmosphere protective sintering method, and a high-performance complex metal part product with alloying densification is produced. The method and device for producing the metal 3D printing product have the advantages that the device and the technology for protruding metal parts or parts made of other materials in a low-cost mode through a 3D printing method are developed.
Description
Technical field
The present invention relates to a kind of metal dust that adopts and add organic adhesive, melt and pile up the method for forming (FDM method) 3D printed product green compact by heat, then by removing binding agent, the method and apparatus of the densified production metallic element of high temperature sintering alloying product.
Background technology
3D prints the one that production technology belongs to near-net-shape increasing material manufacturing technology, and its principle is by software, the three-dimensional parts sterogram of Computer Design to be resolved into some layer planes to cut into slices, and prints out by 3D printer, produces the required parts of unlike material; Because of all many advantages of the unlike material parts of its flexibility, customized, quick near-net-shape production structure complexity, become a kind of increasing material manufacturing technology that has development prospect, aspect integrated manufacturing system (IMS) global formation, the complicated metallic element integral module of direct production high-performance, having peculiar advantage especially.
Current similar 3D prints near-net-shape and increases material and manufacture manufacturing technology and be able to develop rapidly in the whole world, and tentatively the production method of commercialization mainly contains laser stereoforming method, selective laser sintering method, selective electronic bundle sintering process, Low Temperature Thermal and melts the accumulation method of forming etc.
It is to adopt Low Temperature Thermal to melt printing head that 3D printing heat is melted accumulation method of forming technology, thermoplastic macromolecule material dynamic melt-flow is deposited on to ad-hoc location by the printing path extruding of the Moulds Based on Three-Dimensional Models individual-layer data control of Computer Design, thermoplastic cooling curing, successively piles up shaped article.
Common Low Temperature Thermal melts accumulation method of forming 3D printing increasing material forming and can only use the thermoplastic macromolecule material such as PLA or ABS to produce various mold products, and metal adopts laser high-temperature fusion lamination method or selective laser high-temperature sintering process to realize 3D printing shaping.Due to metal molten or sintering temperature high, the laser generator power using by laser formation method is large, generally, more than 200W, superpower laser production technology difficulty is large, cost costliness, extensive commercial investment is large, threshold is high.And the 3D that utilizes part mature technology to develop a kind of low cost mode prints the metallic element equipment and process demand that become a reality of producing.
Summary of the invention
The present invention develops a kind of method that adopts metal powder material add-on type bonding agent, prepare the thermoplasticity 3D metal of low melting point and print raw material compound, melt the accumulation method of forming (FDM type method) 3D printer by transforming slightly commercial heat, just can use this metalloid of preparation to print raw material compound, print metallic element product green compact, remove the forming adhesive in green compact parts by techniques such as hot degreasing method or chemical catalysis degreasing methods, remove the green compact high temperature sintering after molding adhesive by vacuum-sintering or gas-protecting sintering method again, produce the high performance complicated metallic element product of alloying densification.
Production process of the present invention is:
Metal powder material+thermoplastic molding binding agent---forming metal powder mixture mixes---(FDM type method) 3D printer is printed parts green compact---green compact remove binding agent---high temperature sintering---metallic element product.
Molding adhesive function: increase 3D and print the raw-material thermoplasticity of required metal dust and maintain forming shape.
The 3D of various ceramic materials prints and is also applicable to this type of process.
Below in conjunction with drawings and Examples, the present invention is further described.
Accompanying drawing explanation
1. moulding compound machinery pressure extrusion device; 2. servomotor; 3. forming metal powder mixture conveyance conduit; 4. printhead; 5. pile up shaped platform.
The specific embodiment
Specific embodiments of the present invention, printing Stainless steel 316 L material metallic element product with 3D is that example is described as follows:
One. the preparation of thermoplastic molding's metal dust compound
(1) the Stainless steel 316 L trade mark globular metallic powder of selection average grain diameter D50=25 μ m
(2) thermoplastic molding's Binder Composition: 50% paraffin+50% polyethylene
(3) mixing: 60% metal dust content+40% molding adhesive volume content, with 5 kilograms of screw mixing machines, temperature mixing 20KG compound below 120 ℃ 20 hours.
Two .3D printing shaping metallic element green compact
(1) the 3-dimensional metal parts product model that utilizes professional 3D print software to design in computer will to print, print parameters is set, Low Temperature Thermal melts the accumulation method of forming (FDM type method) 3D printer port of printer temperature and is controlled at 160 ℃-180 ℃, and print job platform temperature is controlled at below 80 ℃.
(2) improved Low Temperature Thermal melts the accumulation method of forming (FDM type method) 3D printer feed-type, coil wire rod by thermal plastic high polymer and change into moulding compound machinery pressure extrusion device 1 by stepper motor feed, be supplied printhead 4 by conveyance conduit 3 compounds.
(3) due to thermoplasticity, to become melt-flow dynamic in the time that printhead is heated to more than 160 ℃ for moulding compound, is squeezed out cooling accumulation forming parts green compact after printhead.
Three. in parts green compact, molding adhesive removes
In special hot debinding furnace, heated the removing of binding agent in metallic element green compact, sets heating process curve in this process, control heating rate, guarantees that binding agent removes totally, and parts green compact are indeformable.
Four. remove parts green compact molding adhesive final vacuum sintering
The stainless steel parts green compact that remove binding agent are put into vacuum sintering furnace, according to this 316L material, liquid-phase sintering Temperature Setting is 1350 ℃, formulate sintering temperature curve, parts green compact are carried out to high temperature sintering, the densified alloying of green compact product sintering shrinkage, produces the 316L stainless steel parts product of certain mechanical performance.
Claims (8)
1. a metal 3D impact system product processes and equipment, it is characterized in that adopting the method for metal powder material add-on type bonding agent, prepare the thermoplasticity 3D metal of low melting point and print raw material compound, melt by transforming slightly commercial Low Temperature Thermal the 3D printer of piling up the method for forming (FDM type method), just can use this metalloid of preparation to print raw material, print metallic element product green compact, remove the forming adhesive in green compact parts by techniques such as hot degreasing method or chemical catalysis degreasing methods, remove the green compact high temperature sintering after molding adhesive by vacuum-sintering or gas-protecting sintering method again, produce the high performance complicated metallic element product of alloying densification.
2. a kind of metal 3D impact system product processes as claimed in claim 1 and equipment, is characterized by: printed material is thermoplastic molding's metal dust compound, and its composition is that metal dust adds thermoplastic molding's binding agent.
3. a kind of metal 3D printed product production method as claimed in claim 1 and equipment, it is characterized by: print that to become melt-flow dynamic due to thermoplasticity in the time that printhead heats with moulding compound, extrude conveying by moulding compound machinery pressure, be squeezed out cooling accumulation forming parts green compact after printhead.
4. a kind of metal 3D printed product production method as claimed in claim 1 and equipment, is characterized by: in special degreasing equipment, the binding agent in metallic element green compact is removed, and guarantees that binding agent removes totally in this process, and parts green compact are indeformable.
5. a kind of metal 3D printed product production method as claimed in claim 1 and equipment, it is characterized by: the parts green compact that remove binding agent are put into vacuum sintering furnace, formulate sintering temperature curve, parts green compact are carried out to high temperature sintering, the densified alloying of green compact product sintering shrinkage, produces the parts product of certain mechanical performance.
6. a kind of metal 3D impact system product processes as claimed in claim 1 and equipment, is characterized by: production process is:
Metal powder material+thermoplastic molding binding agent---forming metal powder mixture mixes---(FDM type method) 3D printer is printed parts green compact---green compact remove binding agent---high temperature sintering---metallic element product.
7. a kind of metal 3D printed product production method as claimed in claim 1 and equipment, is characterized by: except various metal materials, the 3D of various ceramic materials prints to produce and is also applicable to this type of process.
8. a kind of metal 3D impact system product processes as claimed in claim 1 and equipment, it is characterized by: in this technical method, using thermoplastic molding's organic binder bond is to print the raw-material low-temperature thermoplastic of required metal dust and maintain forming shape in order to increase 3D, the selection of binding agent is diversity, as long as application target and method meet the principle category of the technology of the present invention, all belong to the claim scope of the technology of the present invention.
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| CN201310611874.6A CN103769587A (en) | 2013-11-28 | 2013-11-28 | Method and device for producing metal 3D printing method product |
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| CN201310611874.6A CN103769587A (en) | 2013-11-28 | 2013-11-28 | Method and device for producing metal 3D printing method product |
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| CN104149337A (en) * | 2014-07-02 | 2014-11-19 | 中国电子科技集团公司第五十五研究所 | Photocuring material for three-dimensional printing and application method thereof |
| CN104163634A (en) * | 2014-07-02 | 2014-11-26 | 中国电子科技集团公司第五十五研究所 | A thermoplastic material used for three-dimensional printing and an application method thereof |
| CN104354278A (en) * | 2014-11-24 | 2015-02-18 | 山东中保康医疗器具有限公司 | Cooling core of novel injection mould and cooling method and manufacturing process of cooling core |
| CN104711442A (en) * | 2015-03-11 | 2015-06-17 | 北京科技大学 | Method for manufacturing hard alloy by 3D printing |
| CN105196545A (en) * | 2015-10-20 | 2015-12-30 | 江苏科技大学 | Method for improving adhesion quality of polymer three-dimensional printed product by using instant adhesive |
| CN105216332A (en) * | 2015-11-06 | 2016-01-06 | 珠海天威飞马打印耗材有限公司 | The forming method of three-dimensional printer and three-dimensional printer |
| CN105665697A (en) * | 2016-03-11 | 2016-06-15 | 中山大学惠州研究院 | Metal or ceramic consumable item for FDM 3D printing, preparation method for metal or ceramic consumable item and finished product printing method |
| CN105728729A (en) * | 2016-03-14 | 2016-07-06 | 深圳森工科技有限公司 | Metal/ceramic powder molding method |
| CN105798295A (en) * | 2016-03-22 | 2016-07-27 | 西安铂力特激光成形技术有限公司 | Preparation method for molybdenum and molybdenum alloy part |
| CN105921751A (en) * | 2016-02-19 | 2016-09-07 | 珠海天威飞马打印耗材有限公司 | Three-dimensional printer and printing method thereof |
| CN105983696A (en) * | 2015-03-17 | 2016-10-05 | 精工爱普生株式会社 | Three-dimensional forming apparatus and three-dimensional forming method |
| CN106003729A (en) * | 2016-07-07 | 2016-10-12 | 李丽芳 | Efficient 3D printer |
| CN106270510A (en) * | 2016-08-25 | 2017-01-04 | 佛山铂利镁特金属科技有限公司 | A kind of method utilizing plastics 3D printer to print manufacture metal/alloy part |
| CN106313787A (en) * | 2015-07-10 | 2017-01-11 | 中国科学院理化技术研究所 | Composite material wire for 3D printing and preparation method thereof |
| CN106312047A (en) * | 2016-09-05 | 2017-01-11 | 东莞市兴茂橡塑科技有限公司 | 3D printing material and method for forming product by utilizing 3D printing material |
| CN106493349A (en) * | 2016-02-19 | 2017-03-15 | 珠海天威飞马打印耗材有限公司 | 3 D-printing material, FDM three-dimensional printers and its Method of printing |
| CN106956001A (en) * | 2017-03-23 | 2017-07-18 | 西京学院 | A kind of FDM types low-melting alloy 3D printer nozzle system and its application |
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| CN107755692A (en) * | 2017-10-21 | 2018-03-06 | 长沙远达华信息科技有限公司 | A kind of metal 3D printing method product processes and equipment |
| CN108136501A (en) * | 2015-10-02 | 2018-06-08 | 株式会社3D控制 | Constituent containing 3 D-printing metal powder, as the 3 D-printing method of raw material and 3 D-printing device |
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| WO2021255195A1 (en) | 2020-06-18 | 2021-12-23 | University Of Malta | Process for production of metal scaffolds and foams |
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| CN107649684A (en) * | 2017-10-31 | 2018-02-02 | 陕西爱骨医疗股份有限公司 | A kind of 3D printing method |
| CN110228995A (en) * | 2019-06-24 | 2019-09-13 | 西北工业大学 | A kind of vacuum sintering method of photocuring 3D printing aluminium oxide ceramics biscuit |
| CN110405213A (en) * | 2019-07-25 | 2019-11-05 | 中国第一汽车股份有限公司 | A kind of manufacturing method of automobile metal support parts |
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| CN113182529A (en) * | 2021-04-15 | 2021-07-30 | 广东工业大学 | 3D printing material, preparation method thereof and printing method |
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Application publication date: 20140507 |