CN112692961A - Beryllium oxide ceramic cold isostatic pressing forming process - Google Patents
Beryllium oxide ceramic cold isostatic pressing forming process Download PDFInfo
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- CN112692961A CN112692961A CN202011596496.5A CN202011596496A CN112692961A CN 112692961 A CN112692961 A CN 112692961A CN 202011596496 A CN202011596496 A CN 202011596496A CN 112692961 A CN112692961 A CN 112692961A
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- beryllium oxide
- oxide ceramic
- isostatic pressing
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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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/003—Pressing by means acting upon the material via flexible mould wall parts, e.g. by means of inflatable cores, isostatic presses
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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
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/08—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on beryllium oxide
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses a beryllium oxide ceramic cold isostatic pressing forming process, which comprises the following steps of firstly preparing a beryllium oxide ceramic raw material, inspecting the prepared beryllium oxide ceramic raw material, weighing for later use after the beryllium oxide ceramic raw material is qualified, preparing a cold isostatic pressing forming die, inspecting the cold isostatic pressing forming die, preparing the beryllium oxide ceramic raw material into a blank after the beryllium oxide ceramic raw material is qualified, placing the blank at the temperature of 3-5 ℃ for 5-8 hours, then forming the blank by using the cold isostatic pressing forming die, drying after the cold isostatic pressing forming die is formed, and drying for not less than 5 hours when the beryllium oxide ceramic raw material is dried. The method comprises the steps of placing the blank at the temperature of 3-5 ℃ for 5-8 hours, then forming the blank by using a cold isostatic pressing forming die, vacuumizing during forming, and keeping the temperature at 25-35 ℃, so that the formed beryllium oxide ceramic can be better formed, and the quality of the processed beryllium oxide ceramic is better.
Description
Technical Field
The invention relates to the field of beryllium oxide ceramics, in particular to a cold isostatic pressing process for beryllium oxide ceramics.
Background
Pure beryllium oxide (BeO) belongs to the cubic system. The density was 3.03g/cm 3. Melting point 2570 ℃. Has high thermal conductivity almost equal to pure red copper aluminum, thermal conductivity coefficient lambda 200-. The dielectric constant is 6 to 7(0.1 MHz). The greatest disadvantage is the high toxicity of the powder and the difficulty of healing contact wounds. The beryllium oxide powder is used as a raw material, added with alumina and other ingredients, and sintered at high temperature to obtain the beryllium oxide powder. Good protection measures are required for the production of such ceramics. The volatility of beryllium oxide in a high-temperature medium containing moisture is improved, the beryllium oxide starts to volatilize at 1000 ℃, the volatilization amount is increased along with the temperature rise, the difficulty is brought to production, and the beryllium oxide is not produced in some countries. But the product has excellent performance, and although the price is higher, the product still has a considerable demand. The beryllium oxide ceramic cold isostatic pressing forming process is used as materials of large-scale integrated circuit substrates, high-power gas laser tubes, radiating fin shells of transistors, microwave output windows, neutron moderators and the like, and the conventional beryllium oxide ceramic is lagged in processing technology and cannot be processed into high-quality products when being processed, so that the beryllium oxide ceramic cold isostatic pressing forming process needs to be provided.
Disclosure of Invention
The invention aims to provide a beryllium oxide ceramic cold isostatic pressing forming process to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a beryllium oxide ceramic cold isostatic pressing forming process comprises the following steps:
the method comprises the following steps: firstly, preparing a beryllium oxide ceramic raw material, inspecting the prepared beryllium oxide ceramic raw material, weighing for later use after the beryllium oxide ceramic raw material is inspected to be qualified, preparing a cold isostatic pressing mould, inspecting the cold isostatic pressing mould, and inspecting for later use after the beryllium oxide ceramic raw material is inspected to be qualified;
step two: preparing a beryllium oxide ceramic raw material into a blank, placing the blank at the temperature of 3-5 ℃ for 5-8 hours, and then forming the blank by using a cold isostatic pressing mould;
step three: and after the cold isostatic pressing forming die is formed, drying, wherein the drying time is not less than 5 hours during drying, finally, inspecting the dried and formed ceramic, and warehousing and registering the qualified ceramic.
Preferably, when the beryllium oxide ceramic raw material blank is placed, a preservative film is used for wrapping, the preservative film is taken down after the beryllium oxide ceramic raw material blank is placed for 5 to 8 hours, and then clear water is sprayed on the surface of the beryllium oxide ceramic raw material blank to form a water film.
Preferably, when the cold isostatic pressing mold is used for molding, the mold is vacuumized and kept in a vacuumized state for 3 to 4 hours.
Preferably, the cold isostatic pressing mold is kept sealed when the cold isostatic pressing mold is formed, and the temperature during forming is kept at 25-35 ℃.
Preferably, when the beryllium oxide ceramic is dried, the drying temperature is kept at 50-60 ℃, and when the beryllium oxide ceramic is dried, multi-angle drying is adopted, and dryers are arranged in multiple directions of the beryllium oxide ceramic for drying.
Preferably, the beryllium oxide ceramic material is prepared by filtering the beryllium oxide ceramic material to remove impurities and then using the beryllium oxide ceramic material.
Preferably, the unqualified beryllium oxide ceramics are counted, and finally, the defective rate is counted.
Preferably, batch beryllium oxide ceramics are registered and warehoused, and anti-falling treatment is well performed.
The invention has the technical effects and advantages that: and (3) placing the blank at the temperature of 3-5 ℃ for 5-8 hours, then forming the blank by using a cold isostatic pressing mould, vacuumizing the blank during forming, and keeping the temperature at 25-35 ℃, so that the blank can be better formed, and the quality of the processed beryllium oxide ceramic is better.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the invention provides a beryllium oxide ceramic cold isostatic pressing forming process, which comprises the following steps:
the method comprises the following steps: firstly, preparing a beryllium oxide ceramic raw material, inspecting the prepared beryllium oxide ceramic raw material, weighing for later use after the beryllium oxide ceramic raw material is inspected to be qualified, preparing a cold isostatic pressing mould, inspecting the cold isostatic pressing mould, and inspecting for later use after the beryllium oxide ceramic raw material is inspected to be qualified;
step two: preparing a beryllium oxide ceramic raw material into a blank, placing the blank at the temperature of 5 ℃ for 8 hours, and then forming the blank by using a cold isostatic pressing mould;
step three: after the cold isostatic pressing forming die is formed, drying is carried out, the drying time is not less than 5 hours when the drying is carried out, finally, the dried and formed ceramic is inspected, and the qualified ceramic is put in storage for registration;
wrapping the beryllium oxide ceramic raw material by using a preservative film when the beryllium oxide ceramic raw material is placed, taking down the preservative film after the beryllium oxide ceramic raw material is placed for 5-8 hours, then spraying clear water on the surface of the beryllium oxide ceramic raw material to form a layer of water film, vacuumizing the mould when a cold isostatic pressing mould is formed, keeping the vacuumizing state for 3-4 hours, keeping the cold isostatic pressing mould sealed when the cold isostatic pressing mould is formed, keeping the temperature at 25-35 ℃ when the beryllium oxide ceramic is formed, keeping the drying temperature at 60 ℃ when the beryllium oxide ceramic is dried, drying at multiple angles when the beryllium oxide ceramic is dried, arranging dryers in multiple directions to dry the beryllium oxide ceramic, and filtering the beryllium oxide ceramic raw material when the beryllium oxide ceramic raw material is prepared, after impurities are removed, the beryllium oxide ceramic is used, unqualified beryllium oxide ceramic is counted, the defective percentage is counted finally, the beryllium oxide ceramic in batches is registered and put in storage, and anti-falling treatment is well carried out.
Example two:
the invention provides a beryllium oxide ceramic cold isostatic pressing forming process, which comprises the following steps:
the method comprises the following steps: firstly, preparing a beryllium oxide ceramic raw material, inspecting the prepared beryllium oxide ceramic raw material, weighing for later use after the beryllium oxide ceramic raw material is inspected to be qualified, preparing a cold isostatic pressing mould, inspecting the cold isostatic pressing mould, and inspecting for later use after the beryllium oxide ceramic raw material is inspected to be qualified;
step two: preparing a beryllium oxide ceramic raw material into a blank, placing the blank at the temperature of 3 ℃ for 5 hours, and then forming the blank by using a cold isostatic pressing mould;
step three: after the cold isostatic pressing forming die is formed, drying is carried out, the drying time is not less than 5 hours when the drying is carried out, finally, the dried and formed ceramic is inspected, and the qualified ceramic is put in storage for registration;
wrapping the beryllium oxide ceramic raw material by using a preservative film when the beryllium oxide ceramic raw material is placed, taking down the preservative film after the beryllium oxide ceramic raw material is placed for 5-8 hours, then spraying clear water on the surface of the beryllium oxide ceramic raw material to form a layer of water film, vacuumizing the mould when a cold isostatic pressing mould is formed, keeping the vacuumizing state for 3-4 hours, keeping the cold isostatic pressing mould sealed when the cold isostatic pressing mould is formed, keeping the temperature at 25-35 ℃ when the beryllium oxide ceramic is formed, keeping the drying temperature at 50 ℃ when the beryllium oxide ceramic is dried, adopting multi-angle drying when the beryllium oxide ceramic is dried, arranging dryers in multiple directions to dry the beryllium oxide ceramic, and filtering the beryllium oxide ceramic raw material when the beryllium oxide ceramic raw material is prepared, after impurities are removed, the beryllium oxide ceramic is used, unqualified beryllium oxide ceramic is counted, the defective percentage is counted finally, the beryllium oxide ceramic in batches is registered and put in storage, and anti-falling treatment is well carried out.
And (2) placing the blank at the temperature of 3-5 ℃ for 5-8 hours, then forming the blank by using a cold isostatic pressing mould, vacuumizing and keeping the temperature at 25-35 ℃ during forming, so that a better temperature is provided for forming, and the formed beryllium oxide ceramic can be better formed, so that the quality of the processed beryllium oxide ceramic is better.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description of the specification.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A beryllium oxide ceramic cold isostatic pressing forming process is characterized by comprising the following steps:
the method comprises the following steps: firstly, preparing a beryllium oxide ceramic raw material, inspecting the prepared beryllium oxide ceramic raw material, weighing for later use after the beryllium oxide ceramic raw material is inspected to be qualified, preparing a cold isostatic pressing mould, inspecting the cold isostatic pressing mould, and inspecting for later use after the beryllium oxide ceramic raw material is inspected to be qualified;
step two: preparing a beryllium oxide ceramic raw material into a blank, placing the blank at the temperature of 3-5 ℃ for 5-8 hours, and then forming the blank by using a cold isostatic pressing mould;
step three: and after the cold isostatic pressing forming die is formed, drying, wherein the drying time is not less than 5 hours during drying, finally, inspecting the dried and formed ceramic, and warehousing and registering the qualified ceramic.
2. The beryllium oxide ceramic cold isostatic pressing forming process according to claim 1, wherein a preservation film is used for wrapping when a beryllium oxide ceramic raw material blank is placed, the preservation film is taken off after the beryllium oxide ceramic raw material blank is placed for 5-8 hours, and then clear water is sprayed on the surface of the beryllium oxide ceramic raw material blank to form a water film.
3. The beryllium oxide ceramic cold isostatic pressing process as claimed in claim 1, wherein, during the formation of the cold isostatic pressing mold, the mold is vacuumized and kept in a vacuumized state for 3-4 hours.
4. The beryllium oxide ceramic cold isostatic pressing process according to claim 1, wherein the cold isostatic pressing mold is kept sealed during the forming process, and the temperature during the forming process is kept at 25-35 ℃.
5. The beryllium oxide ceramic cold isostatic pressing forming process according to claim 1, wherein during drying of the beryllium oxide ceramic, the drying temperature is kept at 50-60 ℃, and during drying, multi-angle drying is adopted, and dryers are arranged in multiple directions of the beryllium oxide ceramic for drying.
6. The beryllium oxide ceramic cold isostatic pressing process as claimed in claim 1, wherein the beryllium oxide ceramic raw material is prepared by filtering, removing impurities and using.
7. The beryllium oxide ceramic cold isostatic pressing process according to claim 1, wherein statistics is performed on unqualified beryllium oxide ceramics, and finally statistics is performed on the defective percentage.
8. The beryllium oxide ceramic cold isostatic pressing process according to claim 1, wherein batches of beryllium oxide ceramic are stored in a warehouse and subjected to anti-falling treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011596496.5A CN112692961A (en) | 2020-12-30 | 2020-12-30 | Beryllium oxide ceramic cold isostatic pressing forming process |
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| CN202011596496.5A CN112692961A (en) | 2020-12-30 | 2020-12-30 | Beryllium oxide ceramic cold isostatic pressing forming process |
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Citations (7)
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| JP2009241400A (en) * | 2008-03-31 | 2009-10-22 | Ngk Insulators Ltd | Calcined ceramic body and manufacturing method of the same |
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| CN105384446A (en) * | 2015-10-28 | 2016-03-09 | 金业新材料科技(昆山)有限公司 | Method for manufacturing composite stable zirconium ceramic thin blank through film extrusion forming |
| CN106799783A (en) * | 2017-02-10 | 2017-06-06 | 广东工业大学 | A kind of isostatic cool pressing method and the preparation method of optical ceramics suitable for optical ceramics |
| US20180326613A1 (en) * | 2015-11-13 | 2018-11-15 | Asahi Kasei Kabushiki Kaisha | Methods for producing ceramic green body molded article and ceramic molded article |
| CN109053226A (en) * | 2018-08-27 | 2018-12-21 | 河源市东源鹰牌陶瓷有限公司 | The method for preparing dumb light dry granular glazed tile |
| CN110655389A (en) * | 2019-11-19 | 2020-01-07 | 中氢能源科技发展(内蒙古)有限公司 | Honeycomb ceramic with mesoporous nano alumina as matrix and preparation method thereof |
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2020
- 2020-12-30 CN CN202011596496.5A patent/CN112692961A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009241400A (en) * | 2008-03-31 | 2009-10-22 | Ngk Insulators Ltd | Calcined ceramic body and manufacturing method of the same |
| CN101857458A (en) * | 2010-05-11 | 2010-10-13 | 昆明理工大学 | Preparation method of Ce-Fe-Zr combined metal oxide honeycomb ceramics type integral oxygen carrier |
| CN105384446A (en) * | 2015-10-28 | 2016-03-09 | 金业新材料科技(昆山)有限公司 | Method for manufacturing composite stable zirconium ceramic thin blank through film extrusion forming |
| US20180326613A1 (en) * | 2015-11-13 | 2018-11-15 | Asahi Kasei Kabushiki Kaisha | Methods for producing ceramic green body molded article and ceramic molded article |
| CN106799783A (en) * | 2017-02-10 | 2017-06-06 | 广东工业大学 | A kind of isostatic cool pressing method and the preparation method of optical ceramics suitable for optical ceramics |
| CN109053226A (en) * | 2018-08-27 | 2018-12-21 | 河源市东源鹰牌陶瓷有限公司 | The method for preparing dumb light dry granular glazed tile |
| CN110655389A (en) * | 2019-11-19 | 2020-01-07 | 中氢能源科技发展(内蒙古)有限公司 | Honeycomb ceramic with mesoporous nano alumina as matrix and preparation method thereof |
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