CN101638320B - Method for manufacturing ceramic die for dry pressing of ceramic dielectric capacitor blank flake - Google Patents
Method for manufacturing ceramic die for dry pressing of ceramic dielectric capacitor blank flake Download PDFInfo
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- CN101638320B CN101638320B CN200810140885XA CN200810140885A CN101638320B CN 101638320 B CN101638320 B CN 101638320B CN 200810140885X A CN200810140885X A CN 200810140885XA CN 200810140885 A CN200810140885 A CN 200810140885A CN 101638320 B CN101638320 B CN 101638320B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- 239000003990 capacitor Substances 0.000 title abstract 2
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 238000005498 polishing Methods 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000013078 crystal Substances 0.000 claims abstract description 4
- 239000003985 ceramic capacitor Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 235000012255 calcium oxide Nutrition 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 claims description 2
- 229910003454 ytterbium oxide Inorganic materials 0.000 claims description 2
- 229940075624 ytterbium oxide Drugs 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 6
- 239000000843 powder Substances 0.000 claims 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 abstract description 10
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 abstract 3
- 238000010304 firing Methods 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 210000001161 mammalian embryo Anatomy 0.000 description 6
- 238000000465 moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Ceramic Capacitors (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a method for manufacturing a ceramic die for dry pressing of a ceramic dielectric capacitor blank flake, which comprises the following steps: a, coating a mold releasing agent on the surface of a model; b, adding a stabilizing agent into zirconium powder, wherein the zirconium powder is 75 to 97 portions, the stabilizing agent is 0.98 to 25 portions, and the zirconium powder and the stabilizing agent are mixed, sprayed and granulated for later use; c, filling the granules prepared in the step b into the model to prepare a green ware body through two times of pressurizing, and then preparing the green ware body into a die green body through green body turning and milling; d, firing the die green body according to the following firing curve: evenly raising the temperature for rubber removal from the room temperature to 600 DEG C for 14 hours, and keeping the temperature at 600 DEG C for 1 hour; evenly increasing the temperature for crystal formation transformation from 600 DEG C to 1,200 DEG C for 9 hours, and keeping the temperature at 1,200 DEG C for 1 hour; evenly increasing the temperature for sintering from 1,200 DEG C to 1,550 DEG C for 18 hours, and keeping the temperature at 1,550 DEG C for 2 hours; evenly increasing the temperature for sintering from 1,550 DEG C to 1,700 DEG C for 10 hours, and keeping the temperature at 1,700 DEG C for 2 hours; and reducing the temperature from 1,700 DEG C to the room temperature for 60 hours, wherein the temperature is reduced evenly without keeping the temperature; and e, grinding and polishing the ceramic blank fired in the step d to prepare the ceramic die.
Description
Technical field
The present invention relates to a kind of process method of mould, relate to the dry-pressing formed used ceramic die of a kind of ceramic capacitor embryo sheet specifically.
Background technology
In the ceramic capacitor production process, dry-pressing formed is critical process.The quality of the embryo tablet quality quality decision finished product of moulding, therefore, the quality of dry-pressing formed middle mould becomes key element.At present, domestic best mould is a wimet, YG15, and this mould molding base sheet quantity is more, but material cost is high, and bad sheet of moulding is prone to the sticking to mould tool.Ceramic die also has application, but because stupalith toughness is relatively poor, and precision work is limited in one's ability, and the ceramic die surface smoothness that makes is relatively poor, the shaped blank sheet comparatively small amt, cost is higher.
Summary of the invention
The object of the invention just is to provide a kind of ceramic capacitor embryo sheet dry-pressing formed making method with ceramic die.
Technical scheme of the present invention is following:
The dry-pressing formed making method of a kind of ceramic capacitor embryo sheet with ceramic die, a. is at the model surface coating release agent; B. with adding stablizer in the zirconium powder, zirconium powder is 75-97 part, and stablizer is 0.98-25 part, and it is subsequent use that stablizer and zirconium powder mix the back mist projection granulating; C. the particle that step b is made is put in the model to add through twice and is pressed into green compact, again through the green compact car, mill processing, process the mould green compact; D. the mould green compact are fired, described sintering curve is: room temperature-600 ℃, 14 hours even intensification binder removals, 600 ℃ of insulations 1 hour; 600-1200 ℃, even intensification crystal formation conversion in 9 hours, 1200 ℃ are incubated 1 hour; 1200-1550 ℃, 18 hours even intensification sintering, 1550 ℃ are incubated 2 hours; 1550-1700 ℃, 10 hours even intensification sintering, 1700 ℃ are incubated 2 hours; The 1700-room temperature, cooling in 60 hours; This process is a uniform decrease in temperature, does not have insulation; E. the porcelain spare blank that steps d is burnt till makes mould through grinding, polishing.
The dry-pressing formed making method with ceramic die of above-mentioned ceramic capacitor embryo sheet, the described stablizer of step (2) are a kind of in cerium oxide, Natural manganese dioxide, quicklime, yttrium oxide, the ytterbium oxide at least.
Manufacture craft of the present invention is simple, and raw materials cost is low; In ceramic formula,, make material have very high toughness through in Zirconium powder, introducing the stablizer that suitably plays the transformation toughening effect; Through meticulous grinding, polishing processing, the ceramic die surface smoothness that makes is good at last, and shaped blank sheet quantity is many, has reduced production cost.
Embodiment:
Concrete preparation method is following: a. is at the model surface coating release agent; B. with adding stablizer in the zirconium powder, zirconium powder is 75-97 part, and stablizer is 0.98-25 part, and it is subsequent use that stablizer and zirconium powder mix the back mist projection granulating; C. the particle that step b is made is put in the model to add through twice and is pressed into green compact, again through the green compact car, mill processing, process the mould green compact; D. the mould green compact are fired, described sintering curve is: room temperature-600 ℃, 14 hours even intensification binder removals, 600 ℃ of insulations 1 hour; 600-1200 ℃, even intensification crystal formation conversion in 9 hours, 1200 ℃ are incubated 1 hour; 1200-1550 ℃, 18 hours even intensification sintering, 1550 ℃ are incubated 2 hours; 1550-1700 ℃, 10 hours even intensification sintering, 1700 ℃ are incubated 2 hours; The 1700-room temperature, cooling in 60 hours; This process is a uniform decrease in temperature, does not have insulation; E. the porcelain spare blank that steps d is burnt till makes mould through grinding, polishing.
Following table is the embodiment tabulation for preparing mould of the present invention by above-mentioned preparation method
Claims (2)
1. dry-pressing formed making method of ceramic capacitor base sheet with ceramic die, it is characterized in that: a. is at the model surface coating release agent; B. with adding stablizer in the zirconia powder, zirconia powder is 75-97 part, and stablizer is 0.98-25 part, and it is subsequent use that stablizer and zirconia powder mix the back mist projection granulating; C. the particle that step b is made is put in the model to add through twice and is pressed into green compact, again through the green compact car, mill processing, process the mould green compact; D fires the mould green compact, and described sintering curve is: room temperature-600 ℃, 14 hours even intensification binder removals, 600 ℃ of insulations 1 hour; 600-1200 ℃, even intensification crystal formation conversion in 9 hours, 1200 ℃ are incubated 1 hour; 1200-1550 ℃, 18 hours even intensification sintering, 1550 ℃ are incubated 2 hours; 1550-1700 ℃, 10 hours even intensification sintering, 1700 ℃ are incubated 2 hours; The 1700-room temperature, cooling in 60 hours, this process is a uniform decrease in temperature, does not have insulation; The porcelain spare blank that e burns till steps d makes mould through grinding, polishing.
2. the dry-pressing formed making method with ceramic die of ceramic capacitor base sheet according to claim 1 is characterized in that: described stablizer is a kind of in cerium oxide, Natural manganese dioxide, quicklime, yttrium oxide, the ytterbium oxide at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810140885XA CN101638320B (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing ceramic die for dry pressing of ceramic dielectric capacitor blank flake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810140885XA CN101638320B (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing ceramic die for dry pressing of ceramic dielectric capacitor blank flake |
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| Publication Number | Publication Date |
|---|---|
| CN101638320A CN101638320A (en) | 2010-02-03 |
| CN101638320B true CN101638320B (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810140885XA Expired - Fee Related CN101638320B (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing ceramic die for dry pressing of ceramic dielectric capacitor blank flake |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581928B (en) * | 2012-03-06 | 2014-02-26 | 郑州博鳌装饰材料有限公司 | Method for manufacturing ceramic mould of artificial culture stone |
| CN105016715A (en) * | 2015-08-14 | 2015-11-04 | 无锡康伟工程陶瓷有限公司 | Production method of round-tube-shaped small-diameter ceramic finished products |
| CN106222513A (en) * | 2016-07-29 | 2016-12-14 | 余姚市巧迪电器厂 | A kind of ceramic die of high intensity and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4607018A (en) * | 1983-12-19 | 1986-08-19 | Murata Manufacturing Co., Ltd. | Non-reducible temperature compensation dielectric ceramic composition |
| CN1260456A (en) * | 2000-01-20 | 2000-07-19 | 天津大学 | Toughened zirconium oxide ceramic composite steel sleeve |
-
2008
- 2008-08-01 CN CN200810140885XA patent/CN101638320B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4607018A (en) * | 1983-12-19 | 1986-08-19 | Murata Manufacturing Co., Ltd. | Non-reducible temperature compensation dielectric ceramic composition |
| CN1260456A (en) * | 2000-01-20 | 2000-07-19 | 天津大学 | Toughened zirconium oxide ceramic composite steel sleeve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-297641A 2006.11.02 |
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| CN101638320A (en) | 2010-02-03 |
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Owner name: JIAOZUO WEINA TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: FENG LIMING Effective date: 20150812 |
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Effective date of registration: 20150812 Address after: 454100, Jiaozuo, Henan Province, one kilometer West Jiao Lu North Patentee after: Jiaozuo Vina Science and Technology Co., Ltd Address before: Henan city in Jiaozuo Province, a 454000 km west of Henan beililian Rd Station District focal Industrial Park Patentee before: Feng Liming |
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Address after: 454100, Jiaozuo, Henan Province, one kilometer West Jiao Lu North Patentee after: Jiaozuo Vina Science and Technology Co., Ltd Address before: 454100, Jiaozuo, Henan Province, one kilometer West Jiao Lu North Patentee before: Jiaozuo Vina Science and Technology Co., Ltd |
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