CN203635914U - Two-way powder spreading device of SLM equipment - Google Patents
Two-way powder spreading device of SLM equipment Download PDFInfo
- Publication number
- CN203635914U CN203635914U CN201320812288.3U CN201320812288U CN203635914U CN 203635914 U CN203635914 U CN 203635914U CN 201320812288 U CN201320812288 U CN 201320812288U CN 203635914 U CN203635914 U CN 203635914U
- Authority
- CN
- China
- Prior art keywords
- powder
- slm equipment
- electric motors
- selective melting
- linear electric
- 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.)
- Expired - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims abstract description 141
- 230000007480 spreading Effects 0.000 title abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 13
- 235000012054 meals Nutrition 0.000 claims description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 4
- 238000007790 scraping Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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 utility model discloses a two-way powder spreading device of SLM equipment. The powder spreading device comprises a powder spreading body device, two parallel auxiliary linear motor guide rails and a linear motor moving sliding block. The linear motor moving sliding block is arranged on the auxiliary linear motor guide rails, the powder spreading body device is erected on the linear motor moving sliding block and comprises a powder loading device and two powder supply gears arranged in the powder loading device, servo motor transmission shafts are arranged at the centers of circles of the two powder supply gears, the two powder supply gears are arranged at the equal height, addendum circles of the two powder supply gears are tangential in the radial direction, and flexible powder scraping brushes are arranged on the two sides of a powder loading body. By the adoption of the powder spreading device, redundant steps in the powder spreading process are reduced, powder spreading is conducted in the powder spreading back-and-forth direction, spreading uniformity and smoothness of powder are guaranteed through the flexible powder scraping brushes on the two sides, and the good repair effect on process instability is achieved.
Description
Technical field
The utility model relates to the technical field of laser selective melting SLM equipment, particularly a kind of laser selective melting SLM equipment two-way powder laying device.
Background technology
The technology such as laser, precision drive, new material, CAD/CAM that laser selective melting SLM is integrated, by the meticulous Laser Focusing hot spot of 30-80 micron, by selection area on the new paving of line overlap joint scanning bisque, after forming surface profile, layer is piled up moulding manufacture with layer, thereby directly obtain arbitrary shape almost, have the metal function part of complete metallurgical binding, density can reach and be close to 100%.Complex three-dimensional solid is reduced to two dimensional surface manufacture by SLM, and manufacturing cost does not depend on the complexity of part, but depend on volume and the forming direction of part.
SLM is as the important way of direct manufacture metal function part, and its advantage is mainly manifested in:
(1) adopt layering manufacturing technology, profiled member is not subject to the impact of geometry complexity, can directly manufacture any complicated metal parts, easily manufactured for personalized small lot complex product;
(2) optical fiber laser of use high power density, beam mode is good, and laser facula is little, and formed precision is higher;
(3) directly make terminal metal product, because laser energy density is higher, can directly be processed into terminal metal product to the high difficult processing metal of fusing point;
(4) metal parts is the entity with metallurgical binding, and its relative density almost reaches 100%, and performance exceedes conventional cast part.
But existing laser selective melting SLM equipment is mostly twin-tub, paving is whitewashed need to be across two cylinders, and just shot, then return to initial position, this mode elapsed time is longer, simultaneously in paving powder process, few for amount of powder, inhomogeneous before and after paving powder, many for powder amount, presetting to shaped material demand increases, and scrape and whitewash employing silica gel, very easily loss, follow-up paving powder is exerted an influence, therefore this patent adopts quantitative powder feeding, the flexibility of two-way powder laying is scraped powder system, save powder supplies, shorten the half paving powder time, and paving powder process has good repair to technique unstability.
Utility model content
The purpose of this utility model is that the shortcoming that overcomes prior art, with not enough, provides a kind of laser selective melting SLM equipment two-way powder laying device.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of laser selective melting SLM equipment two-way powder laying device, comprise paving powder agent set, two auxiliary straight line motor slide rails that be arranged in parallel and linear electric motors moving slider, described linear electric motors moving slider is arranged on auxiliary straight line motor slide rails, and described paving powder agent set is erected on linear electric motors moving slider; Described paving powder agent set comprises and carries powder device and be arranged on carry in powder device two for powder gears, and two home positions for powder gears are provided with servo motor transmission axle; Two radially tangent for the contour setting of powder gear and outside circle, and the both sides of described year powder main body are provided with flexibility and scrape and whitewash.
Preferably, described linear electric motors moving slider is provided with crossbeam, by crossbeam, paving powder agent set is erected on linear electric motors moving slider; On described crossbeam, be also provided with the servomotor rotating for powder gear for driving.
Preferably, described crossbeam is fixedly connected on linear electric motors moving slider by screw.
Preferably, between described auxiliary straight line motor slide rails, be provided with moulding cylinder.
Preferably, described year powder bottom of device is funnel-shaped structure, and the bottom of funnel-shaped structure is provided with meal outlet.
Preferably, described flexibility is scraped to whitewash and is arranged on meal outlet both sides, flexibility scrape whitewash bottom align with moulding cylinder datum plane.
Preferably, flexibility is scraped and is whitewashed the steel disc that comprises that 2-6 layer is stacked, steel plate thickness 0.02-1.5mm, and steel disc bottom adopts scribing method to be prepared as zigzag, stacking every layer of sawtooth cross arrangement of steel disc.
Preferably, the both sides of described moulding cylinder are respectively equipped with the powder that overflows and reclaim hangers.
The utility model has following advantage and effect with respect to prior art:
1, power spreading device of the present utility model has reduced the redundancy step in paving powder process, paving powder back and forth direction all spread powder, the flexibility of both sides is scraped and is whitewashed the uniformity and the planarization that guarantee that powder is sprawled, and while there is the little warpage of regional area in moulding process generation fluctuation forming part, flexibility is scraped to whitewash and can be passed through smoothly this region, and this region spreads less powder or does not spread powder according to warpage situation, and unstability is had to good repair.
2, bottom, power spreading device Zai Fen of the present utility model district is funnel shaped structure, can spread more uniformly powder, thereby increases efficiency and the qualification rate of paving powder.
3, in power spreading device Zai Fen of the present utility model district, be provided with two for powder gear, two gear teeth tip circles are tangent in radial direction, in the time that two gear teeth tips are relative, Zai Fen district powder cannot be by two for powder gear, only have in the time rotating for powder gear for two, when tooth top staggers, flow out in powder Cong Zaifen district, thereby can supply the slewing rate control of powder gear for powder amount by control on powder sending quantity.
4, meal outlet of the present utility model both sides all have flexibility to scrape to whitewash, by powder uniform spreading, this device quantitatively supplying powder, reduce powder waste, and there is two-way powder laying function, shorten the SLM moulding auxiliary process time, improve SLM shaping efficiency, flexible scraping whitewashed the planarization that not only guarantees that powder is sprawled simultaneously, unstability technique had to automatic repair simultaneously.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model power spreading device;
Fig. 2 is the internal structure schematic diagram of the utility model power spreading device;
Fig. 3 is the schematic diagram of the present embodiment steel disc.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1 and Figure 2, the present embodiment laser selective melting SLM equipment two-way powder laying device, comprise paving powder agent set, two auxiliary straight line motor slide rails 5 that be arranged in parallel and linear electric motors moving slider 6, described linear electric motors moving slider is arranged on auxiliary straight line motor slide rails, and described paving powder agent set is erected on linear electric motors moving slider; Described paving powder agent set comprises year powder device 3 and is arranged on two confession powder gears that carry in powder device, first supply powder gear 11 for powder gear 10 and second, first supplies the 11 contour settings of powder gear for powder gear 10 and second, and two home positions for powder gear are provided with servo motor transmission axle 12; In the time that servomotor moves, drive servomotor turning cylinder to rotate, rotate thereby drive for powder gear, two tangent in outside circle radial direction for powder gear, in the time that two gear teeth tips are relative, carrying powder in powder device cannot, by two for powder gear, only have in the time rotating for powder gear for two, when tooth top staggers, powder flows out from carrying powder device.
In the present embodiment, between two auxiliary straight line motor slide rails, be provided with moulding cylinder 2; On linear electric motors moving slider 6, set up paving powder agent set, paving powder agent set and linear electric motors moving slider 6 are fixing by screw 7.Paving powder agent set two ends are respectively equipped with servomotor, servomotor comprises the first servomotor 8 and the second servomotor 9, servomotor is arranged on crossbeam 1, particularly, the first servomotor is arranged on the crossbeam of left side, the second servomotor is arranged on the crossbeam of right side (when spreading powder for the first time, the traffic direction of power spreading device is reference direction).Described the first servomotor 8 is connected for servo motor transmission axle 12 corresponding to powder gear 11 for powder gear 10 and second with first respectively by shaft coupling with the second servomotor 9.
For powder can be sprawled uniformly, bottom, described Zai Fen district is funnel-shaped structure, and the bottom of funnel-shaped structure is provided with meal outlet 16; Funnelform structure can guarantee evenly smooth sprawling of powder.
As shown in Figure 2, described meal outlet both sides are provided with flexibility and scrape and whitewash 15, and flexibility is scraped and whitewashed 15 and be connected with flexibility and scrape and whitewash arm 13, and flexibility is scraped and whitewashed bottom and align with moulding cylinder datum plane.
As shown in Figure 3, flexibility is scraped and is whitewashed the steel disc that comprises that 2-6 layer is stacked, and steel plate thickness is 0.02-1.5mm, and steel disc bottom adopts scribing method to be prepared as zigzag, stacking every layer of sawtooth cross arrangement of steel disc.
As shown in Figure 2, the both sides of described moulding cylinder are respectively equipped with the powder that overflows and reclaim hangers 4; For reclaiming the unnecessary powder overflowing.
The power spreading device of the present embodiment is driven by auxiliary guide rail linear electric motors, but with auxiliary guide rail linear electric motors moving slider be separable, be provided with T-shaped rigidity clamping plate 14, after separation, this power spreading device is removed to SLM forming room, can facilitate the flexible replacing of whitewashing of scraping.Scrape while whitewashing T-shaped rigidity clamping plate and rigid beam connecting screw are taken off changing flexibility, T-shaped rigidity clamping plate are extracted out from rigid beam, by T-shaped rigidity clamping plate separately, bottom scribing sawtooth thin layer steel disc is intersected to pile and be stacked and placed between two rigidity clamping plate, the height of the thin layer steel disc that adjustment thin layer steel disc exposes, highly for rigidity clamping plate are to the height of moulding datum plane.Rigidity clamping plate are tightened, insert in rigid beam, whole power spreading device is relocated on auxiliary guide rail linear electric motors moving slider.
The paving powder method of the present embodiment laser selective melting SLM equipment two-way powder laying device, comprises the steps:
S1, startup power spreading device, by feeding device, power spreading device is supplied to powder, powder is stored in power spreading device Zai Fen district, there is the sensor that detects amount of powder in Zai Fen district, sensor is connected with central industrial computer, when power spreading device Zai Fen district amount of powder is during lower than setting threshold, central industrial computer sends signal to feeding device, to powder in power spreading device Zai Fen district;
S2, in the time that power spreading device Zai Fen district amount of powder enough meets two-layer paving powder, power spreading device is under auxiliary guide rail linear electric motors drive, move with the speed of setting, servo drive motor drives two to rotate for powder gear simultaneously, two gears are tangent in radial direction, in the time that two gear teeth tips are relative, Zai Fen district powder cannot be by two for powder gear, only have in the time rotating for powder gear for two, when tooth top staggers, flow out in powder Cong Zaifen district, and the flexibility of moving direction rear side is scraped and whitewashed powder uniform spreading, until cover whole forming area completely.
S3, unnecessary powder are reclaimed hangers and are reclaimed by the both sides powder that overflows, and now one deck powder paving powder completes, and laser instrument is opened, and laser beam is formulated graph scanning at forming area face according to central industrial computer by light path system;
S4, scanned after, power spreading device starts back and moves; When back moves, for the motion under servomotor drives of powder gear, now quantitative powder flows out through meal outlet, and direction of advance rear flexibility is scraped to whitewash it is sprawled; Until cover whole forming area completely, power spreading device completes return second layer paving powder, and laser beam scans forming area.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (8)
1. a laser selective melting SLM equipment two-way powder laying device, it is characterized in that, comprise paving powder agent set, two auxiliary straight line motor slide rails that be arranged in parallel and linear electric motors moving slider, described linear electric motors moving slider is arranged on auxiliary straight line motor slide rails, and described paving powder agent set is erected on linear electric motors moving slider; Described paving powder agent set comprises and carries powder device and be arranged on carry in powder device two for powder gears, and two home positions for powder gears are provided with servo motor transmission axle; Two radially tangent for the contour setting of powder gear and outside circle, and the both sides of described year powder main body are provided with flexibility and scrape and whitewash.
2. laser selective melting SLM equipment two-way powder laying device according to claim 1, is characterized in that, described linear electric motors moving slider is provided with crossbeam, by crossbeam, paving powder agent set is erected on linear electric motors moving slider; On described crossbeam, be also provided with the servomotor rotating for powder gear for driving.
3. laser selective melting SLM equipment two-way powder laying device according to claim 2, is characterized in that, described crossbeam is fixedly connected on linear electric motors moving slider by screw.
4. laser selective melting SLM equipment two-way powder laying device according to claim 1, is characterized in that, between described auxiliary straight line motor slide rails, is provided with moulding cylinder.
5. laser selective melting SLM equipment two-way powder laying device according to claim 4, is characterized in that, described year powder bottom of device is funnel-shaped structure, and the bottom of funnel-shaped structure is provided with meal outlet.
6. laser selective melting SLM equipment two-way powder laying device according to claim 5, is characterized in that, described flexibility is scraped and whitewashed the both sides that are arranged on meal outlet, flexibility scrape whitewash bottom align with moulding cylinder datum plane.
7. laser selective melting SLM equipment two-way powder laying device according to claim 6, it is characterized in that, flexibility is scraped and is whitewashed the steel disc that comprises that 2-6 layer is stacked, steel plate thickness 0.02-1.5mm, steel disc bottom adopts scribing method to be prepared as zigzag, stacking every layer of sawtooth cross arrangement of steel disc.
8. laser selective melting SLM equipment two-way powder laying device according to claim 4, is characterized in that, the both sides of described moulding cylinder are respectively equipped with the powder that overflows and reclaim hangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812288.3U CN203635914U (en) | 2013-12-10 | 2013-12-10 | Two-way powder spreading device of SLM equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812288.3U CN203635914U (en) | 2013-12-10 | 2013-12-10 | Two-way powder spreading device of SLM equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203635914U true CN203635914U (en) | 2014-06-11 |
Family
ID=50867194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320812288.3U Expired - Lifetime CN203635914U (en) | 2013-12-10 | 2013-12-10 | Two-way powder spreading device of SLM equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203635914U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658646A (en) * | 2013-12-10 | 2014-03-26 | 华南理工大学 | Two-way powder spreading device of SLM equipment and powder spreading method |
| CN104043830A (en) * | 2014-06-30 | 2014-09-17 | 湖南华曙高科技有限责任公司 | Additive manufacturing device composite powder compacting and spreading device and method |
| CN104646665B (en) * | 2015-02-01 | 2016-05-18 | 北京工业大学 | Ceramic blade |
| CN105666883A (en) * | 2016-04-08 | 2016-06-15 | 宁夏共享模具有限公司 | 3D printing equipment spreading device capable of automatically sweeping |
| CN106001564A (en) * | 2016-06-28 | 2016-10-12 | 中北大学 | Crawler-type upper powder supplying and two-way powder spreading device for selective laser sintering (SLS) |
| WO2017048926A1 (en) * | 2015-09-16 | 2017-03-23 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
| CN106735220A (en) * | 2017-01-17 | 2017-05-31 | 华南理工大学 | A kind of many material laser selective melting shaped devices and method |
| US10442176B2 (en) | 2016-02-05 | 2019-10-15 | Rolls-Royce Plc | Additive layer manufacturing |
| CN111036904A (en) * | 2019-12-17 | 2020-04-21 | 安徽恒利增材制造科技有限公司 | Metal powder spreading device of small 3D printer |
-
2013
- 2013-12-10 CN CN201320812288.3U patent/CN203635914U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103658646B (en) * | 2013-12-10 | 2016-08-17 | 华南理工大学 | A kind of selective laser fusing SLM device two-way powder laying device and paving powder method |
| CN103658646A (en) * | 2013-12-10 | 2014-03-26 | 华南理工大学 | Two-way powder spreading device of SLM equipment and powder spreading method |
| CN104043830A (en) * | 2014-06-30 | 2014-09-17 | 湖南华曙高科技有限责任公司 | Additive manufacturing device composite powder compacting and spreading device and method |
| CN104646665B (en) * | 2015-02-01 | 2016-05-18 | 北京工业大学 | Ceramic blade |
| US10322574B2 (en) | 2015-09-16 | 2019-06-18 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
| US10882302B2 (en) | 2015-09-16 | 2021-01-05 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
| US10603892B2 (en) | 2015-09-16 | 2020-03-31 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
| WO2017048926A1 (en) * | 2015-09-16 | 2017-03-23 | Applied Materials, Inc. | Powder delivery for additive manufacturing |
| US10442176B2 (en) | 2016-02-05 | 2019-10-15 | Rolls-Royce Plc | Additive layer manufacturing |
| CN105666883A (en) * | 2016-04-08 | 2016-06-15 | 宁夏共享模具有限公司 | 3D printing equipment spreading device capable of automatically sweeping |
| CN106001564A (en) * | 2016-06-28 | 2016-10-12 | 中北大学 | Crawler-type upper powder supplying and two-way powder spreading device for selective laser sintering (SLS) |
| CN106735220A (en) * | 2017-01-17 | 2017-05-31 | 华南理工大学 | A kind of many material laser selective melting shaped devices and method |
| CN111036904A (en) * | 2019-12-17 | 2020-04-21 | 安徽恒利增材制造科技有限公司 | Metal powder spreading device of small 3D printer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203635914U (en) | Two-way powder spreading device of SLM equipment | |
| CN103658646A (en) | Two-way powder spreading device of SLM equipment and powder spreading method | |
| CN203635913U (en) | Powder spreading device of SLM equipment | |
| CN103691947B (en) | A kind of selective laser fusing SLM equipment power spreading device and paving powder method | |
| CN206392864U (en) | A kind of double-pole two-way powder laying device for selective laser melting unit | |
| CN106735220A (en) | A kind of many material laser selective melting shaped devices and method | |
| CN105127423B (en) | Selective laser melting 3 D-printing equipment | |
| CN105562689A (en) | Bothway powder paving powder based additive material manufacturing device and powder paving method thereof | |
| CN104226996A (en) | Device and method for use of impeller of laser 3D (three dimensional) -printing pump | |
| CN108971482B (en) | Planar array type magnetic control additive manufacturing method | |
| CN110756805A (en) | 3D printing device for selective laser metal solidification and using method thereof | |
| CN105383060A (en) | 3D printing device integrating material supplying, fluxing and crystal leveling assistance | |
| CN203843168U (en) | Equipment for high-energy-beam additive manufacturing large-size metal parts | |
| CN104001915A (en) | Equipment for manufacturing large-size metal part in high energy beam additive manufacturing mode and control method of equipment | |
| CN106001564A (en) | Crawler-type upper powder supplying and two-way powder spreading device for selective laser sintering (SLS) | |
| JP2003245981A (en) | Method and device for manufacturing three- dimensionally shaped article | |
| CN205096542U (en) | Powder base vibration material disk equipment of two -way shop powder | |
| CN202379483U (en) | Movable arm type powder paving device for powder bed | |
| CN205614344U (en) | Metal 3D prints compound lathe with milling process | |
| CN203820889U (en) | SLM (selective laser melting) powder laying and atmosphere circulation protection integrated device | |
| CN206415603U (en) | A kind of many material laser selective melting shaped devices | |
| CN110901053A (en) | 3D printing device for large-scale additive manufacturing | |
| CN101328599A (en) | Numerical control selected area electrochemical deposition rapid forming method and apparatus | |
| US10766190B2 (en) | Additive manufacturing apparatus and related process | |
| CN109676747A (en) | A kind of more material ceramics photocuring print system mechanisms and crude green body preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |