CN103922755B - 3D prints ceramic part material therefor and technique - Google Patents
3D prints ceramic part material therefor and technique Download PDFInfo
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- CN103922755B CN103922755B CN201410100454.6A CN201410100454A CN103922755B CN 103922755 B CN103922755 B CN 103922755B CN 201410100454 A CN201410100454 A CN 201410100454A CN 103922755 B CN103922755 B CN 103922755B
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Abstract
The present invention relates to a kind of 3D printing ceramic part material therefor and comprise low temperature bonding agent, middle temperature binding agent and ceramics powder, wherein low temperature bonding agent, middle temperature binding agent and ceramics powder are prefabricated into particle.Owing to printing the crude green body of generation in sintering process through 3D; low temperature bonding agent is needed to evaporate; and relative to use not by the prior art of granular printed material, the present invention forms short texture by particle, for low temperature bonding agent provides the evaporation gap of spilling.Particularly when the particle using granularity different, size particles forms supporting structure, is more conducive to the spilling of low temperature bonding agent, makes low temperature bonding agent residual in once sintered less.And when high temperature sintering, solid state reaction makes ceramics powder merge and compensate for the space in evaporation gap, although the volume of the ceramic part finally obtained slightly can reduce than crude green body, this makes the structure compact more of ceramic part, and hardness is higher.
Description
Technical field
The present invention relates to a kind of ceramic part manufacturing technology, be specifically related to 3D and print ceramic part material therefor and technique.
Background technology
The method of ceramic part is prepared mainly first by ceramic powder and binding agent hybrid modulation form slurry according to a certain percentage in prior art, again slurry is injected that particular mold is shaping obtains crude green body, utilize method as various in laser, high temperature etc. that crude green body is carried out solid state sintering afterwards and obtain ceramic part.The method needs to make mould according to the specific design of part on the one hand, and be not suitable for small serial production, and the mould making complicated shape needs a large amount of costs of labor and material cost, the part shape of making is also subject to larger restriction.Moreover due to mould structure and design of part be one-to-one relationship, just no longer possess use value in the part rear mold that completes, so just produce the die waste being difficult to recycling in a large number.
On the other hand, inner owing to most of binding agent to be enclosed in pottery in the process of solid state sintering, cause ceramic part to contain more impurity, thus affect the integral hardness of ceramic part.
Summary of the invention
The present invention is directed in prior art and make mould inefficiency, ceramic part after solid state sintering contains more polymictic problem, proposing one utilizes 3D printing technique to form ceramic crude green body, and by adding the different ceramic powder of granularity, the 3D making it to be formed the evaporation space of overflowing for binding agent in first sintering prints ceramic part material therefor and technique.
Technical scheme of the present invention is as follows:
A kind of 3D prints ceramic part material therefor, it is characterized in that: comprise low temperature bonding agent, middle temperature binding agent and ceramics powder, wherein said low temperature bonding agent, middle temperature binding agent and ceramics powder are prefabricated into particle, and the size range of described particle is at φ 0.5 ~ φ 3.0mm.
Described particle comprise the macrobead of volume particle size and the small-particle of small grain size, described macrobead and short grained ratio are 15/65 ~ 25/55.
Described ratio is 20/60.
Described oarse-grained granularity is 150 ~ 300 orders, and short grained granularity is 400 ~ 600 orders.
The volume ratio of described ceramics powder and low temperature bonding agent is 40/60 ~ 60/40, and mass ratio is 75/25 ~ 90/10.
The volume ratio of described ceramics powder and low temperature bonding agent is 50/50, and mass ratio is 80/20.
Described low temperature bonding agent is suitable melting point plastic, and described middle temperature binding agent is inorganic silicate.
The 3D using above-mentioned 3D to print ceramic part material therefor prints a ceramic part technique, and its step comprises:
1) preparation comprises the particle of printed material of low temperature bonding agent, middle temperature binding agent and ceramics powder;
2) described printed material is made crude green body based on the 3D printing device of heat of solution lamination method by use;
3) carry out intermediate sintering temperature to described crude green body, by the evaporation space formed between described particle, the low temperature bonding agent in evaporation crude green body, obtains once sintered;
4) carry out high temperature sintering to described once sintered, obtain ceramic part.
The temperature of described intermediate sintering temperature is 500 ~ 600 DEG C.
The temperature of described high temperature sintering is 1650 ~ 1680 DEG C.
Technique effect of the present invention is as follows:
3D of the present invention prints ceramic part material therefor and comprises low temperature bonding agent, middle temperature binding agent and ceramics powder, and wherein low temperature bonding agent, middle temperature binding agent and ceramics powder are prefabricated into particle.Owing to printing the crude green body of generation in sintering process through 3D; low temperature bonding agent is needed to evaporate; and relative to use not by the prior art of granular printed material, the short texture that the present invention is consisted of particle, for low temperature bonding agent provides the evaporation gap of spilling.Particularly when the particle using granularity different, size particles forms supporting structure, and the distillation being more conducive to low temperature bonding agent is overflowed, and makes low temperature bonding agent residual in once sintered less.And when high temperature sintering, solid state reaction makes ceramics powder merge and compensate for the space in evaporation gap, although the volume of the ceramic part finally obtained slightly can reduce than crude green body, this makes the structure compact more of ceramic part, and hardness is higher.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the present invention
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described.
3D prints and first sets up software three-dimensional model by computer aided design (CAD) (CAD), then divides the three-dimensional model built up into cross section successively, thus instructs printing device successively to print.The present invention utilizes the 3D printing device based on heat of solution lamination method, will be mixed with the ceramics powder of binding agent according to a certain percentage as printed material, is realized the space multistory geometric shape of the part crude green body consistent with three-dimensional model by the mode successively printed.Make the degreasing of part crude green body obtain once sintered by intermediate sintering temperature, carry out high temperature sintering by once sintered afterwards, finally obtain ceramic part.Its concrete steps comprise:
1) printed material is prepared:
Printed material of the present invention comprises low temperature bonding agent, middle temperature binding agent and ceramics powder, wherein low temperature bonding agent can be the material that polyethylene wax etc. can be emulsification at about 100 DEG C, the material of middle temperature binding agent to be inorganic silicate etc. can be at about 500 DEG C melting.Because the content of middle temperature binding agent is less, and be present in the part finally sintering and obtain, therefore only calculate the proportioning of low temperature bonding agent and ceramics powder, i.e. the volume ratio of ceramics powder and low temperature bonding agent is 40/60 ~ 60/40, and mass ratio is 75/25 ~ 90/10; The volume ratio of preferably ceramic powder of the present invention and low temperature bonding agent is 50/50, mass ratio is 80/20, and such as, when the volume of ceramics powder accounts for 50% of cumulative volume, the volume of low temperature bonding agent accounts for 50%, the quality of ceramics powder accounts for 80% of total mass, and the quality of low temperature bonding agent accounts for 20%.
Because low temperature bonding agent is different from the proportion of ceramics powder, in order to avoid mixed printed material is placed rear long-time or produce segregation in transit, printed material is prefabricated into particle by the present invention.For different demands, the particle of printed material can be same particle sizes or different grain size.
2) 3D printing is carried out:
Printed material is inserted in the feed box of 3D printing device, read in the cross-sectional image of three-dimensional part model at printing device after, at syringe needle place, printed material heating is made low temperature bonding agent emulsification, afterwards the printed material of liquid state is inserted the solid section of cross-sectional image, standing a moment makes it shaping.Repeat this step according to each cross-sectional image, successively print accumulation, finally obtain the part crude green body consistent with three-dimensional model.
3) intermediate sintering temperature:
This step sinters part crude green body at the temperature of about 500 DEG C, makes low temperature bonding agent overflow once sintered that realizes degreasing, and simultaneously, warm binding agent melting continues the solid shape maintaining ceramics powder, sintering temperature preferably 600 DEG C.In order to reduce the residual integral hardness being unlikely to affect part of low temperature bonding agent, printed material is prefabricated into the different particle of granularity by the present invention in step 1), make it the evaporation gap forming microcosmic when sintering, low temperature bonding agent spills in free surrounding space by these evaporation gaps.In order to realize this purpose, the macrobead granularity of printed material is 150 ~ 300 orders, and small-particle granularity is 400 ~ 600 orders, and macrobead and short grained ratio are 15/65 ~ 25/55.
4) high temperature sintering:
This step sinters once sintered of intermediate sintering temperature at the temperature of about 1670 DEG C, obtains high-density, high-precision ceramic part by solid state reaction.
Suppose that the volume of crude green body is V1, the volume of ceramic part is V2, then it has following relation:
The above embodiment can make the invention of those skilled in the art's comprehend, but does not limit the present invention in any way creation.Therefore; although this specification sheets has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can modify to the invention or equivalent replacement; in a word, all do not depart from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (7)
1. a 3D prints ceramic part material therefor, it is characterized in that: comprise low temperature bonding agent, middle temperature binding agent and ceramics powder, wherein said low temperature bonding agent, middle temperature binding agent and ceramics powder are prefabricated into particle, described particle comprises the macrobead of volume particle size and the small-particle of small grain size, described macrobead and short grained ratio are 15/65 ~ 25/55, described oarse-grained granularity is 150 ~ 300 orders, and short grained granularity is 400 ~ 600 orders; Described low temperature bonding agent is polyethylene wax, and described middle temperature binding agent is inorganic silicate.
2. a kind of 3D as claimed in claim 1 prints ceramic part material therefor, it is characterized in that: described ratio is 20/60.
3. a kind of 3D as claimed in claim 1 or 2 prints ceramic part material therefor, it is characterized in that: the volume ratio of described ceramics powder and low temperature bonding agent is 40/60 ~ 60/40, and mass ratio is 75/25 ~ 90/10.
4. a kind of 3D as claimed in claim 3 prints ceramic part material therefor, it is characterized in that: the volume ratio of described ceramics powder and low temperature bonding agent is 50/50, and mass ratio is 80/20.
5. the 3D using the 3D as described in one of claim 1-4 to print ceramic part material therefor prints a ceramic part technique, and its step comprises:
1) preparation comprises the particle of printed material of low temperature bonding agent, middle temperature binding agent and ceramics powder;
2) described printed material is made crude green body based on the 3D printing device of heat of solution lamination method by use;
3) carry out intermediate sintering temperature to described crude green body, by the evaporation space formed between described particle, the low temperature bonding agent in evaporation crude green body, obtains once sintered;
4) carry out high temperature sintering to described once sintered, obtain ceramic part.
6. a kind of 3D as claimed in claim 5 prints ceramic part technique, it is characterized in that: the temperature of described intermediate sintering temperature is 500 ~ 600 DEG C.
7. a kind of 3D as claimed in claim 5 prints ceramic part technique, it is characterized in that: the temperature of described high temperature sintering is 1650 ~ 1680 DEG C.
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| CN201410100454.6A CN103922755B (en) | 2014-03-18 | 2014-03-18 | 3D prints ceramic part material therefor and technique |
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| CN201410100454.6A CN103922755B (en) | 2014-03-18 | 2014-03-18 | 3D prints ceramic part material therefor and technique |
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| CN103922755A CN103922755A (en) | 2014-07-16 |
| CN103922755B true CN103922755B (en) | 2016-01-13 |
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| CN106903775A (en) * | 2017-01-17 | 2017-06-30 | 华南理工大学 | A kind of many shower nozzle Collaborative Control ceramic powders 3D forming methods |
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| GB2502295B (en) * | 2012-05-22 | 2015-12-09 | Mcor Technologies Ltd | Colour 3-dimensional printing with 3D gamut mapping |
| CN104658917B (en) * | 2014-12-24 | 2017-03-29 | 中南大学 | A kind of preparation method of the metal-based compound electronics packaging part containing high-volume fractional SiC |
| CN105254309B (en) * | 2015-09-24 | 2017-11-14 | 佛山华智新材料有限公司 | A kind of 3D printing ceramic process |
| WO2017062202A1 (en) * | 2015-10-08 | 2017-04-13 | Massachusetts Institute Of Technology | Carrier-substrate adhesive system |
| CN106608726A (en) * | 2015-10-26 | 2017-05-03 | 优克材料科技股份有限公司 | Three-dimensional printing method and three-dimensional printing powder |
| CN107129285A (en) * | 2016-02-26 | 2017-09-05 | 加我科技股份有限公司 | Ceramic powders with high intensity and the method that biscuit is made using it |
| CN105895311A (en) * | 2016-06-27 | 2016-08-24 | 杨林娣 | Transformer |
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| CN105958355B (en) * | 2016-06-29 | 2018-09-21 | 娄超棋 | A kind of box-type substation |
| JP6862917B2 (en) * | 2017-02-28 | 2021-04-21 | セイコーエプソン株式会社 | Composition for manufacturing three-dimensional modeled object and manufacturing method of three-dimensional modeled object |
| CN107686341B (en) * | 2017-08-22 | 2020-04-28 | 北京航空航天大学 | Ceramic product and preparation method thereof |
| CN114685156A (en) * | 2020-12-30 | 2022-07-01 | 北京中科三环高技术股份有限公司 | Microwave dielectric ceramic powder and preparation method and application thereof |
| CN113754448B (en) * | 2021-08-26 | 2023-05-30 | 共享智能装备有限公司 | Ceramic powder for additive manufacturing, preparation method and baking method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8568649B1 (en) * | 2007-03-20 | 2013-10-29 | Bowling Green State University | Three-dimensional printer, ceramic article and method of manufacture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8568649B1 (en) * | 2007-03-20 | 2013-10-29 | Bowling Green State University | Three-dimensional printer, ceramic article and method of manufacture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903775A (en) * | 2017-01-17 | 2017-06-30 | 华南理工大学 | A kind of many shower nozzle Collaborative Control ceramic powders 3D forming methods |
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