CN1305805C - Ceramic lock pin based on zirconium oxide and manufacturing process - Google Patents
Ceramic lock pin based on zirconium oxide and manufacturing process Download PDFInfo
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- CN1305805C CN1305805C CNB021371822A CN02137182A CN1305805C CN 1305805 C CN1305805 C CN 1305805C CN B021371822 A CNB021371822 A CN B021371822A CN 02137182 A CN02137182 A CN 02137182A CN 1305805 C CN1305805 C CN 1305805C
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- lock pin
- zirconium oxide
- ceramic lock
- pin based
- manufacturing process
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Abstract
The present invention relates to a zirconium oxide ceramic lock pin and a fabrication technology thereof. The components of the zirconium oxide ceramic lock pin comprise ZrO2 with 3 mol% Y2O3 and AL2O3, wherein the weight percentage of the ZrO2 is 97.0 to 99.8%, and the weight percentage of the AL2O3 is 0.2 to 3.0%. The fabrication technology of the zirconium oxide ceramic lock pin comprises the technological steps of zirconium dioxide pretreatment, mixing of the zirconium dioxide and moulding binding agents, injection moulding, etc. Compared with the prior art, the present invention has the advantages of high precision of product size, homogeneous density and little deformation. The step of injection moulding is carried out under low pressure, which can greatly reduce equipment cost and mould cost.
Description
Technical field
The present invention relates to ceramic electron element and manufacturing process thereof, relate in particular to a kind of ceramic lock pin based on zirconium oxide and manufacturing process thereof.
Background technology
At present, the ceramic lock pin based on zirconium oxide that is used for the fiber optic network communication field is this raw material with the zirconium white micro mist of 3mol stabilized with yttrium oxide all generally, injection molding under the injection pressure of 10～120Mpa, its process characteristic is the injection pressure height, formed precision is also higher, but it exists the moulding wedding agent to take off defectives such as complexity, equipment cost and die cost height of row; Application number is that 02115604.2 Chinese patent application discloses a kind of blank of cored ceramics extrusion molding mould and method, and the concentricity of the base substrate that it is made reaches 20 μ m, and extrudate density is lower, the problem of subsequent fine flexibility of operation difference but exist.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of dimensional precision height, equipment cost and die cost low ceramic lock pin based on zirconium oxide and manufacturing process thereof for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of ceramic lock pin based on zirconium oxide is characterized in that, the composition of this lock pin comprises and contains 3mol%Y
2O
3ZrO
2And AL
2O
3, described ZrO
2Account for 97.0～99.8% weight, described AL
2O
3Account for 0.2～3.0% weight.
Described lock pin external diameter is Φ 1.2～4.0mm, and centre hole is 0.115～0.20mm, and concentricity is 30～60 μ m, and volume density is 5.8～6.1g/cm
3
A kind of manufacturing process of ceramic lock pin based on zirconium oxide is characterized in that, it comprises following processing step:
(1). earlier with composition for containing 3mol%Y
2O
3ZrO
297.0～99.8% weight powder carries out pre-burning under 700～1100 ℃, add AL then
2O
30.2～3.0% weight obtains compound, adds the oleic acid or the stearic acid that account for this mixture volume 1～10% again and carries out the ball milling mixing, sieving obtains the zirconium white powder;
(2). zirconium white powder that step (1) is obtained and moulding wedding agent are by 25～50: 40～110 volume ratio is mixed, and carries out mixingly then under 40～110 ℃ of temperature, and described moulding wedding agent can be paraffin or blended wax;
(3). the mixed zirconia ceramics raw material of step (2) is made ceramic lock pin based on zirconium oxide through LPIM in mould, injecting forming temperature is 40～110 ℃, and forming pressure is 0.2～1.0Mpa, and molding time is 5～15 seconds.
In the described step (2), the zirconium white powder is 28～50: 50～70 with the preferable mixed volume ratio of moulding wedding agent, and preferable melting temperature is 60～80 ℃.
In the described step (3), injecting forming temperature is preferably 60～80 ℃, and forming pressure is preferably 0.4～0.9Mpa, and molding time is preferably 10～15 seconds.
Compared with prior art, the present invention has the following advantages and effect:
1. ceramic lock pin based on zirconium oxide dimensional precision height of the present invention, after organism took off row, burns till, the dimensional precision of goods can reach the listed index of table one:
Table one ceramic lock pin based on zirconium oxide dimensional precision index
| The specification precision | ||
| Blank of cored spare before the precision work | After the lock pin precision work | |
| Concentricity | 30～50μm | ≤1μm |
| The diameter of bore tolerance | ±3μm | Ф125+0.001/-0 |
| The external diameter tolerance | ±0.02mm | Φ2.4990±0.0005 |
| Length tolerance | ±0.5mm | SC：10.5±0.05 ST：12.7±0.05 |
2. low pressure molding ceramic lock pin based on zirconium oxide biscuit of the present invention, blank density is even, is out of shape for a short time, and after organism took off row, burns till, volume density can reach 6.02～6.06g/cm
3, hardness can reach HRA88.
3. the injection pressure of ceramic lock pin based on zirconium oxide manufacturing process of the present invention is lower, can reduce mould and equipment cost greatly.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
A kind of ceramic lock pin based on zirconium oxide, its composition are Y-PSZ:ZrO
2(contain 3mol%Y
2O
3) 99.5% weight, AL
2O
30.5% weight.
The low head injection manufacturing process of above-mentioned ceramic lock pin based on zirconium oxide, this technology comprises the following steps:
(1) with ZrO
2(contain 3mol%Y
2O
3) powder of 99.5% weight inserts in the electric furnace, through 850 ℃ of pre-burnings, the ratio in 0.5% weight adds AL again
2O
3Mix compound, add oleic acid and mix by 2% of this mixture volume through 12 hours ball milling, it is standby to obtain the zirconium white powder after 100 mesh sieves.
The refined waxs of (2) zirconium white powder and the moulding wedding agent that step (1) is obtained---52～55 degree were with 32: 68 mixed, and are mixing down at 70 ℃.
(3) mixed zirconia ceramics raw material is made ceramic lock pin based on zirconium oxide through LPIM in mould, injecting forming temperature is 60 ℃, and forming pressure is 0.2～1.0Mpa, 0.4～0.9Mpa preferably, and molding time is 5～15 seconds.
Embodiment 2
A kind of ceramic lock pin based on zirconium oxide, its composition are Y-PSZ:ZrO
2(contain 3mol%Y
2O
3) 98% weight, AL
2O
32% weight.
The low head injection manufacturing process of above-mentioned ceramic lock pin based on zirconium oxide, this technology comprises the following steps:
(1) with ZrO
2(contain 3mol%Y
2O
3) powder of 98% weight inserts in the electric furnace, through 950 ℃ of pre-burnings, the ratio in 2% weight adds AL again
2O
3Mix compound, add oleic acid and mix by 5% of this mixture volume through 12 hours ball milling, it is standby to obtain the zirconium white powder after 100 mesh sieves.
(2) zirconium white powder that step (1) is obtained and blended wax be with 35: 65 mixed, and be mixing down at 70 ℃.
(3) mixed zirconia ceramics raw material is made ceramic lock pin based on zirconium oxide through LPIM in mould, injecting forming temperature is 60 ℃, and forming pressure is 0.2～1.0Mpa, 0.4～0.9Mpa preferably, and molding time is 5～15 seconds.
Embodiment 3
A kind of ceramic lock pin based on zirconium oxide, its composition are Y-PSZ:ZrO
2(contain 3mol%Y
2O
3) 99.7% weight, AL
2O
30.3% weight.
The low head injection manufacturing process of above-mentioned ceramic lock pin based on zirconium oxide, this technology comprises the following steps:
(1) with ZrO
2(contain 3mol%Y
2O
3) powder of 99.7% weight inserts in the electric furnace, through 950 ℃ of pre-burnings, the ratio in 0.3% weight adds AL again
2O
3Mix compound, add stearic acid and mix by 10% of this mixture volume through 12 hours ball milling, it is standby to obtain the zirconium white powder after 100 mesh sieves.
(2) zirconium white powder that step (1) is obtained and blended wax be with 35: 65 mixed, and be mixing down at 70 ℃.
(3) mixed zirconia ceramics raw material is made ceramic lock pin based on zirconium oxide through LPIM in mould, injecting forming temperature is 65 ℃, and forming pressure is 0.6Mpa, and molding time is 10 seconds.
The ceramic lock pin based on zirconium oxide dimensional precision height of the foregoing description 1,2,3 after organism takes off row, burns till, can reach the listed index of table two:
The technical indicator that table two embodiment reaches
| The item description | Main component | Volume density g/cm 3 | Hardness HRA | Surface color spot μ m | Concentricity μ m | Internal orifice dimension tolerance μ m | External diameter tolerance mm | Length tolerance mm |
| Touch the mark | ZrO 2 | 6.02 ～ 6.06 | 88 | ＜100×100 | 30 | ±3 | ±0.02 | ±0.5 |
Low head injection ceramic lock pin based on zirconium oxide manufacturing process of the present invention, forming pressure is 0.2～1.0Mpa, can guarantee product's dimensional precision, the ceramic lock pin based on zirconium oxide biscuit of moulding, blank density is even, is out of shape little, after organism took off row, burns till, volume density can reach 6.02～6.06g/cm
3, hardness can reach HRA88.And lower to the requirement of mould and equipment, in the production of zirconia ceramics near-net-shape, application value is widely arranged.
Claims (4)
1. the manufacturing process of a ceramic lock pin based on zirconium oxide is characterized in that, it comprises following processing step:
(1). earlier with composition for containing 3mol%Y
2O
3ZrO
297.0～99.8% weight powder carries out pre-burning under 700～1100 ℃, add AL then
2O
30.2～3.0% weight obtains compound, adds the oleic acid or the stearic acid that account for this mixture volume 1～10% again and carries out the ball milling mixing, sieving obtains the zirconium white powder;
(2). zirconium white powder that step (1) is obtained and moulding wedding agent are by 25～50: 40～110 volume ratio is mixed, and carries out mixingly then under 40～110 ℃ of temperature, and described moulding wedding agent is paraffin or blended wax;
(3). the mixed zirconia ceramics raw material of step (2) is made ceramic lock pin based on zirconium oxide through LPIM in mould, injecting forming temperature is 40～110 ℃, and forming pressure is 0.2～1.0Mpa, and molding time is 5～15 seconds.
2. ceramic lock pin based on zirconium oxide manufacturing process according to claim 1 is characterized in that: in the described step (2), the zirconium white powder is 28～50: 50～70 with the mixed volume ratio of moulding wedding agent, and melting temperature is 60～80 ℃.
3. ceramic lock pin based on zirconium oxide manufacturing process according to claim 1 is characterized in that: in the described step (3), injecting forming temperature is 60～80 ℃, and forming pressure is 0.4～0.9Mpa, and molding time is 10～15 seconds.
4. ceramic lock pin based on zirconium oxide manufacturing process according to claim 1 is characterized in that, described lock pin external diameter is Φ 1.2～4.0mm, and centre hole is 0.115～0.20mm, and concentricity is 30～60 μ m, and volume density is 5.8～6.1g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021371822A CN1305805C (en) | 2002-09-27 | 2002-09-27 | Ceramic lock pin based on zirconium oxide and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021371822A CN1305805C (en) | 2002-09-27 | 2002-09-27 | Ceramic lock pin based on zirconium oxide and manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1485298A CN1485298A (en) | 2004-03-31 |
| CN1305805C true CN1305805C (en) | 2007-03-21 |
Family
ID=34146907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021371822A Expired - Fee Related CN1305805C (en) | 2002-09-27 | 2002-09-27 | Ceramic lock pin based on zirconium oxide and manufacturing process |
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|---|---|
| CN (1) | CN1305805C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767988B (en) * | 2009-01-01 | 2012-07-11 | 黄石晨信光电有限责任公司 | Nano ZrO2 ceramic pin blank and preparation method thereof |
| US20130345044A1 (en) * | 2012-06-20 | 2013-12-26 | Nanchong Three-Circle Electronics Co., Ltd. | Ceramic ferrule |
| CN103755341B (en) * | 2013-12-27 | 2016-04-27 | 中国神华能源股份有限公司 | Zirconia composite ceramics material of a kind of acid corrosion-resistant and preparation method thereof |
| CN105058179B (en) * | 2015-07-21 | 2017-07-28 | 四川天邑康和通信股份有限公司 | A kind of ceramic insertion core exempts to process the technique and system of processing of endoporus and concentricity |
| CN107555988A (en) * | 2017-09-02 | 2018-01-09 | 绵阳凤面科技有限公司 | A kind of modeling base zirconium oxide for being applied to injection moulding ceramic product is granulated preparation method for material |
| CN109574660B (en) * | 2019-01-21 | 2022-01-21 | 东莞信柏结构陶瓷股份有限公司 | Ceramic powder, ceramic heating element, preparation method of ceramic heating element and application of ceramic heating element in electronic cigarette |
| CN110204334B (en) * | 2019-05-29 | 2021-12-21 | 常州大学 | Special material for high-density zirconium oxide powder injection molding and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369462A (en) * | 2002-03-21 | 2002-09-18 | 武汉发瑞精密陶瓷有限公司 | Superfine powder as raw material of high-performance zirconium oxide ceramics and its preparing process |
-
2002
- 2002-09-27 CN CNB021371822A patent/CN1305805C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369462A (en) * | 2002-03-21 | 2002-09-18 | 武汉发瑞精密陶瓷有限公司 | Superfine powder as raw material of high-performance zirconium oxide ceramics and its preparing process |
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|---|---|
| CN1485298A (en) | 2004-03-31 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Shanghai Kodak flaw detection equipment Co., Ltd. Assignor: Shanghai Inst. of Materials Contract record no.: 2010310000121 Denomination of invention: Ceramic lock pin based on zirconium oxide and manufacturing process Granted publication date: 20070321 License type: Exclusive License Open date: 20040331 Record date: 20100728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20180927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |