CN111347523A - Special operation cabinet body of notes congeal shaping - Google Patents
Special operation cabinet body of notes congeal shaping Download PDFInfo
- Publication number
- CN111347523A CN111347523A CN201811576643.5A CN201811576643A CN111347523A CN 111347523 A CN111347523 A CN 111347523A CN 201811576643 A CN201811576643 A CN 201811576643A CN 111347523 A CN111347523 A CN 111347523A
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- CN
- China
- Prior art keywords
- slurry
- cabinet
- cabinet body
- blank
- longitudinal wave
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- 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
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/241—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening using microwave heating means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the field of production and research of ceramics and composite products manufactured by using a special operating cabinet for injection-coagulation forming. Firstly, the vibration of a high-frequency longitudinal wave oscillator excites slurry in a working platform and a mould, so that bubbles can be quickly removed in the slurry injection molding process, the stacking density of the slurry is improved, the internal defects of a blank are reduced, and the strength performance of the blank is improved; and secondly, the energy generated by the microwave is utilized to synchronously and rapidly realize the drying speed of the mold and the slurry, improve the polymerization reaction speed of the monomer, reduce the curing time and promote the gelation rate. Thirdly, the vacuum pumping is adopted to seal the cabinet body, so that redundant gas generated in the operation process is removed, and the interference of the redundant gas on the quality of the green body is avoided; and fourthly, a microcomputer, a PLC and an electrical control integrated device are matched, so that automatic and precise control is realized.
Description
Technical Field
The invention is applied to a vacuum sealing operation cabinet with high-frequency longitudinal wave vibration and microwave heating coagulation promoting functions when ceramic and composite material blanks are formed by a casting coagulation technology.
Background
The injection-coagulation forming technology is a brand new ceramic material wet forming technology invented by national laboratories of the United states of Oak Ridge in the early 90 s of the 20 th century, combines the traditional ceramic injection forming technology with high polymer chemistry and physics ingeniously, has the advantages of simple equipment, forming complex shapes, low cost and the like, and is gradually applied to forming of various structural ceramics, functional ceramics, ceramic matrix composite materials and the like.
The basic principle of pour-congealing molding is that a small amount of organic monomer is added into a powder-solvent suspension system with low viscosity and high solid content, then a catalyst and an initiator are utilized to polymerize and crosslink the organic monomer in the suspension to form a three-dimensional network structure, and the liquid slurry is cured and molded in situ, so that a blank with a powder and high molecular substance composite structure is obtained.
The injection molding and gelling of the green body requires the elimination of air bubbles in the slurry, as air bubbles in the suspension form pores in the ceramic green body, which hinder the densification of the ceramic. The ceramic products have defects, resulting in a reduction in product quality. The conventional method for eliminating bubbles comprises the steps of vacuum stirring degassing and defoaming agent addition, after vacuum treatment, the content of oxygen in the slurry is reduced, the polymerization inhibition effect is weakened, and the strength of the blank is improved.
Meanwhile, the gelling temperature in the slurry gelling process has a great influence on the gelling process, when the temperature is lower, the decomposition rate of the initiator is low, enough primary free radicals cannot be formed, the gelling time is longer, the gelling rate is also slow, the temperature rise is beneficial to improving the polymerization reaction speed of monomers and reducing the curing time, but when the temperature is too high, larger internal stress of a blank and a certain temperature gradient are generated, and the deformation and uniformity of the blank are poorer.
Disclosure of Invention
The invention aims to provide an injection-coagulation molding special operating cabinet, which can be operated to achieve the compactness of a molded product by an injection-coagulation technology, thereby improving the quality of a finished product.
In order to achieve the purpose, the invention adopts the following technical scheme:
1) using high-frequency longitudinal-wave oscillators
The high-frequency longitudinal wave oscillator generates high-frequency longitudinal wave vibration by means of an adjustable pneumatic vibration source, and transmits the vibration to the platform and the template through the roller path. The frequency can be adjusted steplessly in the interval of 0-150 kHz.
Through the use of the high-frequency longitudinal wave oscillator, the material on the working platform is subjected to high-frequency longitudinal wave vibration, and the bubbles are rapidly discharged, so that the compact effect is achieved in a short time.
2) By means of microwave heating devices
The microwave is generated by the core component, namely the magnetron under the excitation of a power supply by inputting alternating current with a certain frequency, so that the polymerization reaction speed of monomers in the slurry is improved, the curing time is shortened, and the gelation rate is promoted.
Meanwhile, as the microwave has the characteristics of strong penetrability, small thermal inertia and the like, the heating speed is high and uniform, the energy is saved, the efficiency is high, and the condensation speed of the product is greatly improved.
3) Adopt the vacuum seal cabinet body
And a vacuum air extractor is arranged, and when the cabinet body is opened, vacuum treatment is carried out, so that the operation under the vacuum condition is realized.
Through the implementation of the vacuum device, the gas in the slurry can be quickly and effectively removed, the pores in the blank are reduced, and the compactness of the product is improved.
4) Adopts microcomputer and PLC integrated control
The use of microcomputer and PLC integrated control enables the high-frequency longitudinal wave vibration and microwave heating of the slurry injection process and the defined time after the slurry injection process to be controlled, the conditions required by the optimal molding are met, the slurry polymerization and gelation rate is optimal, and the coagulation time is saved.
Through the application, the injection-coagulation forming technology is further improved, the intrinsic defects of the blank are obviously reduced, the manufacturing period is shortened, the product quality is improved, and meanwhile, the process is simple and feasible, safe, environment-friendly and pollution-free.
Drawings
The invention is further described below with reference to the figures and examples:
the figure is a schematic structural diagram of the high-frequency longitudinal wave vibration and vacuum microwave heating cabinet body.
Schematic illustration of the invention
In the figure: 1. an operation platform panel, 2, a vacuum microwave heating cabinet, 3, a high-frequency longitudinal wave oscillator and 4, an automatic microcomputer electrical control cabinet.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The cabinet is mainly used for manufacturing ceramic blanks with the size range of 200mm × 300mm and 300mm by designing and manufacturing a 300mm × 400mm high-frequency longitudinal wave vibration and microwave heating vacuum seal, and the invention is further described in detail by specific embodiments.
1) Firstly, a work platform (shown by a serial number 1) and a vacuum microwave heating sealed cabinet body (shown by a serial number 2) with the thickness of 400mm × 400mm and 15mm are manufactured.
2) The frequency is adjusted to 120Hz by adjusting a frequency modulator in an automatic microcomputer electrical control cabinet (shown as a serial number 4), and the oscillator generates oscillation to promote the slurry to carry out high-frequency longitudinal wave vibration in the process of injecting the slurry into the mold cavity, so that the flowing and the compaction of the slurry are realized.
3) The frequency of a generator (shown in a serial number 4) is adjusted by adjusting a microwave frequency modulator in an automatic microcomputer electric control cabinet (shown in a serial number 4) to be set to a 2450MHz frequency band.
4) The high-frequency longitudinal wave vibration is generated by adjusting a pneumatic vibration source of an automatic microcomputer electric control cabinet (shown by a serial number 4) and arranging and controlling an oscillator (shown by a serial number 3).
5) When the qualified slurry is injected into a mold for about one third, starting an oscillator, setting the time for 3min, enabling the mold above the vibrating platform to generate high-frequency longitudinal vibration, separating bubbles in the slurry from the slurry under the action of vibration force, aggregating and breaking, floating and removing, and meanwhile layering free liquid and solid content substances in the slurry under the high-frequency longitudinal wave vibration, wherein the specific gravity of the free liquid and the solid content substances is smaller than that of the solid content substances, the free liquid and the solid content substances gradually move up in a layering mode to overflow from a slurry outlet of the mold, and the solid content substances are retained in the mold, so that the purpose of high density is achieved.
6) Meanwhile, the vacuum exhaust device is automatically started to exhaust redundant gas.
7) Meanwhile, the microwave heating device is automatically started to output microwaves, and the mold and the slurry in the cabinet body are dried under the action of microwaves and the slurry is promoted to be condensed.
8) The action time is set to 100 min. And finally, the blank is gelatinized, the cabinet stops running, and the blank is taken out to form the required compact blank.
The above description is only for the purpose of illustration and description, and the use of high-frequency longitudinal wave vibration, microwave heating and vacuum sealed cabinet body further improves the injection molding technology, reduces the defects in the product, shortens the manufacturing period, improves the product quality, and is simple and easy to implement.
Claims (5)
1. A special operating cabinet for gel injection molding.
2. The cabinet body of claim 1, wherein the cabinet body is made of high-frequency longitudinal wave frequency conversion oscillation technology.
3. The cabinet body of claim 1, wherein the cabinet body is formed by microwave heating coagulation promoting technology.
4. The cabinet of claim 2, wherein the cabinet utilizes vacuum sealed venting technology.
5. According to claim 1, the cabinet is equipped with an automatic integrated control technology of microcomputer and PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576643.5A CN111347523A (en) | 2018-12-23 | 2018-12-23 | Special operation cabinet body of notes congeal shaping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576643.5A CN111347523A (en) | 2018-12-23 | 2018-12-23 | Special operation cabinet body of notes congeal shaping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111347523A true CN111347523A (en) | 2020-06-30 |
Family
ID=71190162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811576643.5A Pending CN111347523A (en) | 2018-12-23 | 2018-12-23 | Special operation cabinet body of notes congeal shaping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111347523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643851A (en) * | 2020-12-20 | 2021-04-13 | 福建省科越智能机械有限公司 | Automatic ceramic grouting forming system capable of achieving accurate positioning |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935478A (en) * | 2006-10-16 | 2007-03-28 | 清华大学 | Method and apparatus for preparing ceramic microball by injection-condensation |
| CN102225868A (en) * | 2011-04-13 | 2011-10-26 | 中材高新材料股份有限公司 | Preparation of zirconium diboride-silicon carbide ultrahigh-temperature ceramic by slip-casting molding non-pressurized sintering method |
| CN203293337U (en) * | 2013-05-10 | 2013-11-20 | 朱丰海 | Injection molding device for gel ceramics |
| CN105980119A (en) * | 2014-02-04 | 2016-09-28 | 苹果公司 | Method for ceramic component casting |
-
2018
- 2018-12-23 CN CN201811576643.5A patent/CN111347523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935478A (en) * | 2006-10-16 | 2007-03-28 | 清华大学 | Method and apparatus for preparing ceramic microball by injection-condensation |
| CN102225868A (en) * | 2011-04-13 | 2011-10-26 | 中材高新材料股份有限公司 | Preparation of zirconium diboride-silicon carbide ultrahigh-temperature ceramic by slip-casting molding non-pressurized sintering method |
| CN203293337U (en) * | 2013-05-10 | 2013-11-20 | 朱丰海 | Injection molding device for gel ceramics |
| CN105980119A (en) * | 2014-02-04 | 2016-09-28 | 苹果公司 | Method for ceramic component casting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643851A (en) * | 2020-12-20 | 2021-04-13 | 福建省科越智能机械有限公司 | Automatic ceramic grouting forming system capable of achieving accurate positioning |
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Application publication date: 20200630 |
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