CN1609054A - Technological process of forming composite silicon carbide ceramic material based on pyrolysis of photocured prototype - Google Patents
Technological process of forming composite silicon carbide ceramic material based on pyrolysis of photocured prototype Download PDFInfo
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- CN1609054A CN1609054A CN 200410073185 CN200410073185A CN1609054A CN 1609054 A CN1609054 A CN 1609054A CN 200410073185 CN200410073185 CN 200410073185 CN 200410073185 A CN200410073185 A CN 200410073185A CN 1609054 A CN1609054 A CN 1609054A
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Abstract
The technological process of the present invention has basic principle as the combination of fast photocuring formation technology and SiC reaction sintering technology. The technological process includes the main steps of: fast photocuring formation of prototype as the organic template of SiC part with liquid photosensitive resin; pyrolysis to convert the organic template into 3D carbon rack as the inorganic template; impregnating silicon at high temperature for in-situ reaction of Si on the carbon rack to form SiC ceramic part. The present invention alters traditional ceramic member preparing process, can make ceramic parts with complicated shape and precise size, and realizes the no-mold precision manufacture of SiC ceramic part.
Description
Technical field
The present invention relates to a kind of novel process of ceramic objects, particularly complex-shaped, dimensional precision is high based on sl prototype pyrolytic process of forming composite silicon carbide ceramic material.
Background technology
Thyrite is one of most important high-performance engineering stupalith, and its product is widely used and urgent demand in fields such as petrochemical complex, aerospace, defence and militaries.Traditional preparation technology makes base substrate from powder stock, and high temperature sintering produces member then, and the base substrate of this method is made and all can not be met the demands on dimensional precision still is complex-shaped degree.The most frequently used method is the plastic forming of powder at present, but it is high to the rheological characteristics requirement of raw material, and the carbofrax material poor plasticity, also is difficult to plastic forming and goes out complicated accurate product.What recently occur prepares the method for silicon carbide ceramics product with timber, natural fiber etc. for the organic formwork converted in-situ, and inhomogeneous because of natural timber or fibrous texture, individual difference is big, and is very difficult to meet the demands.
Summary of the invention
In order to satisfy the requirement of using, overcome the silicon carbide ceramics quality is hard, post-production is difficult to and known processes exists defective or deficiency, the present invention proposes a kind of based on sl prototype pyrolytic process of forming composite silicon carbide ceramic material, this technology can produce the organic formwork that interior tissue is even, complex-shaped and formed precision is high, so produce complex-shaped, size accurately, need not the later stage and remove to expect the silicon carbide ceramics product processed.
The technical solution used in the present invention is: a kind of based on sl prototype pyrolytic process of forming composite silicon carbide ceramic material, with liquid photosensitive resin and inorganic silicon is raw material, adopt sl prototype technology to combine, specifically comprise with response type silicon carbide preparation technology:
1), constructs the three-dimensional data model of product, and data model is converted into the STL formatted file according to actual requirement;
2) do layering with the delamination software of rapidform machine self and handle, and processing data is imported in the manufacturing course;
3) on the photocureable rapid shaping machine, produce colophony prototype;
It is characterized in that, further comprising the steps of:
4) colophony prototype that photocuring is obtained is put into crucible, puts carbonization in the high-temperature vacuum furnace into, heat-up rate: 100 ℃/h, carbonization temperature: 500 ℃～600 ℃, soaking time is: 4h～5h, and cool to room temperature then with the furnace and take out, obtain the three-dimensional carbon template of product;
5) in plumbago crucible, put into three-dimensional carbon template also with the embedding of Si powder, put into crucible in the high-temperature vacuum furnace and cover the crucible lid, heating then, heat-up rate: 600 ℃/h, temperature of reaction: 1500 ℃～1600 ℃, soaking time is: 0.5～1h, and three-dimensional carbon template absorbs the fused inorganic silicon, silicon and carbon generation chemical reaction form silicon carbide, and silicon carries out reaction in and forms the composite silicon carbide ceramic material product on carbon template.Through the 1700 ℃ of row of vacuumizing Si 2h, cool to room temperature with the furnace and take out again, obtain the product of silicon carbide and matrix material thereof.
Method of the present invention has changed traditional ceramic component preparation process, can produce the silicon carbide ceramics product that any structure is complex-shaped, dimensional precision is high.For small serial production silicon carbide ceramics and composite product thereof provide new processing method, improved the development speed of high-temperature structural components and customized product greatly, realized accurate manufacturing of no mould of silicon carbide ceramics.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is the product three-dimensional model diagram;
Fig. 3 is the carbonization synoptic diagram; Symbolic representation among the figure is: 1. product 2. crucibles 3. bodies of heater;
Fig. 4 oozes Si reaction synoptic diagram, and the symbolic representation among the figure is: 1. product, 2. crucible, 3. body of heater, 4.Si powder, 5. crucible cover.
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and contriver provide.
Embodiment
Of the present invention based on sl prototype pyrolytic process of forming composite silicon carbide ceramic material, make prototype by photocurable quick shaping process, for the profile and the interior tissue of silicon carbide ceramics provides organic formwork, be converted into inorganic template by pyrolytic process---three-dimensional carbon template.Carry out the high temperature siliconising then, silicon carries out reaction in and forms silicon carbide ceramics and composite element thereof on carbon template.
Embodiment 1:
Referring to Fig. 1, processing step of the present invention comprises:
1.3D the pattern layout step is according to actual requirement, with the three-dimensional data model of Pro/E software construction product, as shown in Figure 2; And model shown in Figure 2 is stored as the STL formatted file;
2. the delamination software that carries with rapidform machine is done the layering processing, and processing data is imported in the manufacturing course;
3. on the photocureable rapid shaping machine, produce colophony prototype; Above-mentioned steps all is mature technologies of this area.
4. the colophony prototype that photocuring is obtained is put into crucible, puts carbonization in the high-temperature vacuum furnace into, heat-up rate: 100 ℃/h, carbonization temperature: 600 ℃, soaking time is: 4h, and cool to room temperature then with the furnace and take out, obtain the three-dimensional carbon template of product, as shown in Figure 3;
5. in plumbago crucible, put into carbon template and with the embedding of Si powder, the Si powder directly is 60 μ m, put into crucible in the high-temperature vacuum furnace and cover the crucible lid, heating then, as shown in Figure 4.Heat-up rate: 600 ℃/h, temperature of reaction: 1600 ℃, soaking time is: 0.5h, and again through the 1700 ℃ of row of vacuumizing Si2h, cool to room temperature with the furnace and take out, silicon and carbon template produce chemical reaction, obtain the product of silicon carbide and matrix material thereof;
6. product is carried out surface-conditioning.
Embodiment 2:
Different is that in step 4, carbonization temperature: 500 ℃, soaking time is: 5h for present embodiment and embodiment 1; In the step 5, the Si powder directly is 50 μ m, temperature of reaction: 1500 ℃, soaking time is: 1h, all the other are all with embodiment 1.
Claims (1)
1. one kind based on sl prototype pyrolytic process of forming composite silicon carbide ceramic material, is raw material with liquid photosensitive resin and inorganic silicon, adopts sl prototype technology to combine with response type silicon carbide preparation technology, specifically comprises:
1), constructs the three-dimensional data model of product, and data model is converted into the STL formatted file according to actual requirement;
2) do layering with the delamination software of rapidform machine self and handle, and processing data is imported in the manufacturing course;
3) on the photocureable rapid shaping machine, produce colophony prototype;
It is characterized in that, further comprising the steps of:
4) colophony prototype that photocuring is obtained is put into crucible, puts carbonization in the high-temperature vacuum furnace into, heat-up rate: 100 ℃/h, carbonization temperature: 500 ℃～600 ℃, soaking time is: 4h～5h, and cool to room temperature then with the furnace and take out, obtain the three-dimensional carbon template of product;
5) in plumbago crucible, put into three-dimensional carbon template also with the embedding of Si powder, put into crucible in the high-temperature vacuum furnace and cover the crucible lid, heating then, heat-up rate: 600 ℃/h, temperature of reaction: 1500 ℃～1600 ℃, soaking time is: 0.5～1h, again through the 1700 ℃ of row of vacuumizing Si2h, cool to room temperature with the furnace and take out, obtain the product of silicon carbide and matrix material thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200410073185 CN1253410C (en) | 2004-10-22 | 2004-10-22 | Technological process of forming composite silicon carbide ceramic material based on pyrolysis of photocured prototype |
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| CN 200410073185 CN1253410C (en) | 2004-10-22 | 2004-10-22 | Technological process of forming composite silicon carbide ceramic material based on pyrolysis of photocured prototype |
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| CN1609054A true CN1609054A (en) | 2005-04-27 |
| CN1253410C CN1253410C (en) | 2006-04-26 |
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| CN 200410073185 Expired - Fee Related CN1253410C (en) | 2004-10-22 | 2004-10-22 | Technological process of forming composite silicon carbide ceramic material based on pyrolysis of photocured prototype |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303038C (en) * | 2005-12-12 | 2007-03-07 | 西安交通大学 | Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body |
| CN1328216C (en) * | 2005-09-26 | 2007-07-25 | 西安交通大学 | Technological process of making silicon carbide ceramic part based on smelting deposition and fast forming techn |
| CN100515992C (en) * | 2006-07-13 | 2009-07-22 | 西安交通大学 | Preparation method of SiC/BN layered composite ceramic |
| CN101912957A (en) * | 2010-08-18 | 2010-12-15 | 西安交通大学 | Network interpenetrating type ceramic-metal composite material and preparation method thereof |
| 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 |
| CN109467438A (en) * | 2019-01-09 | 2019-03-15 | 北京理工大学 | A kind of silicon carbide ceramics Stereolithography method |
| CN115259856A (en) * | 2022-07-22 | 2022-11-01 | 袁晗 | Directional heat conduction metamaterial structure unit constructed based on three-dimensional light curing molding technology |
| CN115724681A (en) * | 2021-09-01 | 2023-03-03 | 中国科学院金属研究所 | Preparation method and application of porous silicon carbide ceramic with regular pore structure |
-
2004
- 2004-10-22 CN CN 200410073185 patent/CN1253410C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328216C (en) * | 2005-09-26 | 2007-07-25 | 西安交通大学 | Technological process of making silicon carbide ceramic part based on smelting deposition and fast forming techn |
| CN1303038C (en) * | 2005-12-12 | 2007-03-07 | 西安交通大学 | Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body |
| CN100515992C (en) * | 2006-07-13 | 2009-07-22 | 西安交通大学 | Preparation method of SiC/BN layered composite ceramic |
| CN101912957A (en) * | 2010-08-18 | 2010-12-15 | 西安交通大学 | Network interpenetrating type ceramic-metal composite material and preparation method thereof |
| 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 |
| CN109467438A (en) * | 2019-01-09 | 2019-03-15 | 北京理工大学 | A kind of silicon carbide ceramics Stereolithography method |
| CN115724681A (en) * | 2021-09-01 | 2023-03-03 | 中国科学院金属研究所 | Preparation method and application of porous silicon carbide ceramic with regular pore structure |
| CN115724681B (en) * | 2021-09-01 | 2024-04-12 | 中国科学院金属研究所 | Preparation method and application of porous silicon carbide ceramic with regular pore structure |
| CN115259856A (en) * | 2022-07-22 | 2022-11-01 | 袁晗 | Directional heat conduction metamaterial structure unit constructed based on three-dimensional light curing molding technology |
| CN115259856B (en) * | 2022-07-22 | 2023-07-18 | 袁晗 | Directional heat conduction metamaterial structure unit constructed based on three-dimensional photo-curing molding technology |
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|---|---|
| CN1253410C (en) | 2006-04-26 |
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