CN103058663A - Preparation method of silicon nitride ceramic balls - Google Patents
Preparation method of silicon nitride ceramic balls Download PDFInfo
- Publication number
- CN103058663A CN103058663A CN2012104961564A CN201210496156A CN103058663A CN 103058663 A CN103058663 A CN 103058663A CN 2012104961564 A CN2012104961564 A CN 2012104961564A CN 201210496156 A CN201210496156 A CN 201210496156A CN 103058663 A CN103058663 A CN 103058663A
- Authority
- CN
- China
- Prior art keywords
- raw material
- ceramic
- powder
- preparation
- sintering
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Ceramic Products (AREA)
Abstract
The invention relates to a preparation method of silicon nitride ceramic balls, belonging to the field of ceramic preparation. The method provided by the invention comprises the following steps: ceramic raw material preparation, blank formation, sintering, and polishing by grinding. The ceramic raw material is composed of the following components in percentage by mass: 80-95% of beta-Si3N4, 2-15% of Al2O3, 1-12% of MgO, 1-12% of Y2O3 and 1-12% of ZrO2. The preparation method can implement sintering of silicon nitride ceramic balls under ordinary pressure, and the steps are simple, convenient and easy to implement. The silicon nitride ceramic prepared by the method has the advantages of high strength, favorable compactness, excellent high temperature resistance and excellent wear resistance, and can be used as rolling bodies of a ball bearing.
Description
Technical field
The present invention relates to a kind of preparation method of silicon nitride ceramic ball, belong to ceramic preparation field.
Background technology
Ball bearing is a kind of of rolling bearing, and the ball ball is contained in the centre of interior steel ring and outer rim, can bear larger load.Ceramic Balls particularly silicon nitride ball has low density, high rigidity, low-friction coefficient, and the characteristics such as wear-resisting, self-lubricating and good rigidly are particularly suitable for doing at a high speed, the rolling body of high precision and long lifetime hybrid ceramic ball bearing.
The sintering process of silicon nitride ceramics is generally three kinds: hot isostatic pressing (HIP), hot pressing (HP) and gas pressure sintering.
Heat and other static pressuring processes is that goods are placed in the airtight container, applies each to equal pressure to goods, imposes simultaneously high temperature, and under the effect of High Temperature High Pressure, goods are able to sintering and densification.Hot isostatic pressing is powder compacting directly, and then the powder mould of packing into uses nitrogen, argon gas to make pressure medium, makes the powder metallurgical technique of powder direct heating pressure sintering moulding, and the pressure of its sintering is 150MPa ~ 200MPa.
Hot pressed sintering is that dry powder is filled in the model, adds the flanging heating from single shaft direction limit again, and pressure is about 70Mpa, a kind of sintering method that moulding and sintering are finished simultaneously.The method has the reduction sintering temperature, shortens sintering time, resists grain growth, obtains that crystal grain is tiny, density is high and the advantage of mechanical, that electric property is good product.Yet its sintering pressure is high, and process and equipment complexity, and production control requires tight, and moulding stock requires high, and energy consumption is large, and production efficiency is lower, the production cost height.
Atmosphere sintering is the method for ceramic body being carried out sintering in passing into the burner hearth of certain gas, and its sintering pressure is 5 ~ 10MPa.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of silicon nitride ceramic ball, this preparation method can be implemented in sintered silicon nitride ceramic ball under the normal pressure, utilize the silicon nitride ceramic ball of the method preparation to have low density, high rigidity, low-friction coefficient, wear-resisting, self-lubricating and good rigidly etc. can be widely used as the rolling body of bearing.
A kind of preparation method of silicon nitride ceramic ball comprises the step of ceramic raw material preparation, base shaping, sintering and grinding and polishing, is undertaken by following processing step:
1. ceramic raw material preparation: ceramic raw material is after drying mixed in proportion, sieve, the powder after sieving is placed the ball mill ball milling;
2. press forming: with step 1. the gained powder place grinding tool, adopt the method for isostatic cool pressing to be pressed into sphere;
3. sintering: under the normal pressure, powder is placed mould, in 1600 ℃ ~ 1650 ℃, insulation 0.5h ~ 2h cools to room temperature with the furnace behind the stopped heating at sintering oven;
4. grinding and polishing: the gained Ceramic Balls is ground and polished;
Wherein, step 1. described in ceramic raw material, by mass percentage, formed by following component:
1. the preferred described step of the preparation method of silicon nitride ceramic ball of the present invention is undertaken by following technique: ceramic raw material is after drying mixed in proportion, cross 80 ~ 200 mesh sieves, powder after sieving is placed ball mill, in speed ball milling 6h ~ 10h of 300 ~ 360r/min.
3. the preferred described step of the preparation method of silicon nitride ceramic ball of the present invention is undertaken by following technique: under the normal pressure, powder is placed mould, speed with 60 ~ 80 ℃/min in sintering oven is warming up to 1600 ℃ ~ 1650 ℃, and insulation 0.5h ~ 2h cools to room temperature with the furnace behind the stopped heating.
The preferred described step of the preparation method of silicon nitride ceramic ball of the present invention 4., carry out as follows: Ceramic Balls is at first carried out attrition process, the workpiece that will carry out subsequently after the attrition process polishes, and the sphericity of Ceramic Balls is no more than 0.07 micron, and surfaceness is no more than 0.008 micron.
The preferred described ceramic raw material of the preparation method of silicon nitride ceramic ball of the present invention by mass percentage, is comprised of following component:
The preparation method of silicon nitride ceramic ball of the present invention is preferred described ceramic raw material further, by mass percentage, is comprised of following component:
The further preferred following technical proposals of the preparation method of silicon nitride ceramic ball of the present invention:
A kind of preparation method of silicon nitride ceramics comprises following processing step:
1. ceramic raw material preparation: ceramic raw material is after drying mixed in proportion, cross 80 ~ 200 mesh sieves, the powder after sieving is placed ball mill, in speed ball milling 6h ~ 10h of 300 ~ 360r/min;
2. press forming: with step 1. the gained powder place grinding tool, adopt the method for isostatic cool pressing to be pressed into sphere;
3. sintering: under the normal pressure, powder is placed mould, the speed with 60 ~ 80 ℃/min in sintering oven is warming up to 1600 ℃ ~ 1650 ℃, and insulation 0.5h ~ 2h cools to room temperature with the furnace behind the stopped heating;
4. grinding and polishing: Ceramic Balls is at first carried out attrition process, and the workpiece that will carry out subsequently after the attrition process polishes, and the sphericity of Ceramic Balls is no more than 0.07 micron, and surfaceness is no more than 0.008 micron.
The invention has the beneficial effects as follows: the invention provides a kind of preparation method of silicon nitride ceramic ball, comprise the step of ceramic raw material preparation, base shaping, sintering and grinding and polishing, described ceramic raw material by mass percentage, is comprised of following component: β-Si
3N
4: 80% ~ 95%, Al
2O
3: 2% ~ 15%, MgO:1% ~ 12%, Y
2O
3: 1% ~ 12%, ZrO
2: 1% ~ 12%.This preparation method can be implemented in sintered silicon nitride ceramic ball under the normal pressure, and step is simple, convenient and easy simultaneously.Utilize silicon nitride ceramics intensity height, good, the high temperature resistant and wear-resisting excellence of compactness of the method preparation, can be used as the rolling body of ball bearing.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Embodiment 1
1. ceramic raw material preparation: ceramic raw material is after drying mixed in proportion, cross 200 mesh sieves, the powder after sieving is placed ball mill, in the speed ball milling 8h of 300r/min
2. press forming: with step 1. the gained powder place grinding tool, adopt the method for isostatic cool pressing to be pressed into sphere;
3. sintering: under the normal pressure, powder is placed mould, the speed with 80 ℃/min in sintering oven is warming up to 1600 ℃, and insulation 1h cools to room temperature with the furnace behind the stopped heating;
4. grinding and polishing: Ceramic Balls is at first carried out attrition process, and the workpiece that will carry out subsequently after the attrition process polishes 0.05 micron of the sphericity of Ceramic Balls, 0.005 micron of surfaceness.
Claims (6)
1. the preparation method of a silicon nitride ceramic ball is characterized in that: comprise the step of ceramic raw material preparation, base shaping, sintering and grinding and polishing, undertaken by following processing step:
1. ceramic raw material preparation: ceramic raw material is after drying mixed in proportion, sieve, the powder after sieving is placed the ball mill ball milling;
2. press forming: with step 1. the gained powder place grinding tool, adopt the method for isostatic cool pressing to be pressed into sphere;
3. sintering: under the normal pressure, powder is placed mould, in 1600 ℃～1650 ℃, insulation 0.5h～2h cools to room temperature with the furnace behind the stopped heating at sintering oven;
4. grinding and polishing: the gained Ceramic Balls is ground and polished;
Wherein, step 1. described in ceramic raw material, by mass percentage, formed by following component:
2. method according to claim 1, it is characterized in that: 1. described step is undertaken by following technique: ceramic raw material is after drying mixed in proportion, cross 80～200 mesh sieves, the powder after sieving is placed ball mill, in speed ball milling 6h～10h of 300～360r/min.
3. method according to claim 1, it is characterized in that: 3. described step is undertaken by following technique: under the normal pressure, powder is placed mould, the speed with 60～80 ℃/min in sintering oven is warming up to 1600 ℃～1650 ℃, insulation 0.5h～2h cools to room temperature with the furnace behind the stopped heating.
4. method according to claim 1, it is characterized in that: 4. described step carries out as follows: Ceramic Balls is at first carried out attrition process, and the workpiece that will carry out subsequently after the attrition process polishes, the sphericity of Ceramic Balls is no more than 0.07 micron, and surfaceness is no more than 0.008 micron.
5. method according to claim 1, it is characterized in that: described ceramic raw material by mass percentage, is comprised of following component:
6. method according to claim 1, it is characterized in that: described method comprises following processing step:
1. ceramic raw material preparation: ceramic raw material is after drying mixed in proportion, cross 80～200 mesh sieves, the powder after sieving is placed ball mill, in speed ball milling 6h～10h of 300～360r/min;
2. press forming: with step 1. the gained powder place grinding tool, adopt the method for isostatic cool pressing to be pressed into sphere;
3. sintering: under the normal pressure, powder is placed mould, the speed with 60～80 ℃/min in sintering oven is warming up to 1600 ℃～1650 ℃, and insulation 0.5h～2h cools to room temperature with the furnace behind the stopped heating;
4. grinding and polishing: Ceramic Balls is at first carried out attrition process, and the workpiece that will carry out subsequently after the attrition process polishes, and the sphericity of Ceramic Balls is no more than 0.07 micron, and surfaceness is no more than 0.008 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104961564A CN103058663A (en) | 2012-11-28 | 2012-11-28 | Preparation method of silicon nitride ceramic balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104961564A CN103058663A (en) | 2012-11-28 | 2012-11-28 | Preparation method of silicon nitride ceramic balls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103058663A true CN103058663A (en) | 2013-04-24 |
Family
ID=48101598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104961564A Pending CN103058663A (en) | 2012-11-28 | 2012-11-28 | Preparation method of silicon nitride ceramic balls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103058663A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467102A (en) * | 2013-08-30 | 2013-12-25 | 盐城工学院 | Silicon nitride porous ceramic and preparation method thereof |
| CN103951437A (en) * | 2013-10-17 | 2014-07-30 | 上海步进精密陶瓷有限公司 | Silicon nitride ceramic bearing ball with ultralow porosity and manufacture method thereof |
| CN110922193A (en) * | 2019-12-20 | 2020-03-27 | 上海步进精密陶瓷有限公司 | Preparation method of silicon nitride ceramic ball |
| CN113185302A (en) * | 2021-06-10 | 2021-07-30 | 灵石鸿润和新材料有限公司 | Large-size silicon nitride ceramic ball for wind power generation and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101049676A (en) * | 2007-05-15 | 2007-10-10 | 山东东阿钢球集团有限公司 | Technique for processing silicon fluoride ball in G3 grade |
| CN101583804A (en) * | 2006-12-20 | 2009-11-18 | Ntn株式会社 | Rolling bearing, hub unit, rolling member, universal joint, torque transmission member for universal joint, and process for producing the same |
-
2012
- 2012-11-28 CN CN2012104961564A patent/CN103058663A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583804A (en) * | 2006-12-20 | 2009-11-18 | Ntn株式会社 | Rolling bearing, hub unit, rolling member, universal joint, torque transmission member for universal joint, and process for producing the same |
| CN101049676A (en) * | 2007-05-15 | 2007-10-10 | 山东东阿钢球集团有限公司 | Technique for processing silicon fluoride ball in G3 grade |
Non-Patent Citations (1)
| Title |
|---|
| 师瑞霞等: "烧结助剂对氮化硅陶瓷显微结构和性能的影响", 《现代技术陶瓷》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467102A (en) * | 2013-08-30 | 2013-12-25 | 盐城工学院 | Silicon nitride porous ceramic and preparation method thereof |
| CN103467102B (en) * | 2013-08-30 | 2016-02-17 | 盐城工学院 | A kind of porous SiN ceramic and preparation method thereof |
| CN103951437A (en) * | 2013-10-17 | 2014-07-30 | 上海步进精密陶瓷有限公司 | Silicon nitride ceramic bearing ball with ultralow porosity and manufacture method thereof |
| CN103951437B (en) * | 2013-10-17 | 2016-01-20 | 上海步进精密陶瓷有限公司 | Ultralow-porosity silicon nitride ceramics bearing ball and manufacture method thereof |
| CN110922193A (en) * | 2019-12-20 | 2020-03-27 | 上海步进精密陶瓷有限公司 | Preparation method of silicon nitride ceramic ball |
| CN113185302A (en) * | 2021-06-10 | 2021-07-30 | 灵石鸿润和新材料有限公司 | Large-size silicon nitride ceramic ball for wind power generation and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106518089B (en) | A kind of preparation method of high performance and big size silicon nitride ceramic material | |
| CN107673757A (en) | A kind of ceramic mobile phone bonnet and preparation method thereof | |
| CN103601473B (en) | A kind of high purity, high-compactness magnesia ceramics | |
| CN103058663A (en) | Preparation method of silicon nitride ceramic balls | |
| CN101850502B (en) | Preparation method of silicon nitride ceramic blade | |
| CN102225529A (en) | Cubic boron nitride honing tool and production method thereof | |
| CN107988541A (en) | The method that microwave sintering prepares Nanograin Cemented Carbide | |
| CN105859301A (en) | Silicon nitride ceramic and preparation method thereof | |
| CN106587969A (en) | Low-dielectric-constant insulation composite ceramic material and preparation method thereof | |
| CN102442819A (en) | Method for preparing high-performance large aluminum oxide product at low cost | |
| CN108746647A (en) | A kind of preparation method and Powder High-speed Steels of Powder High-speed Steels | |
| CN108395220A (en) | A kind of preparation method of the wear-resisting diphase ceramic material of aluminium oxide-zirconium oxide | |
| CN110330345A (en) | Silicon nitride ceramic material and preparation method thereof and ceramic mold | |
| CN111116206A (en) | Preparation method of compact MoAlB ceramic material, product thereof and preparation method of high-purity MoAlB ceramic powder | |
| CN111304479A (en) | Preparation method of VCrNbMoW refractory high-entropy alloy | |
| CN103011873A (en) | Preparation method of silicon nitride toughening ceramic ball | |
| CN104674098A (en) | Cermet material based on TiCN-(Ti,M)CN core mixed structure and preparation method thereof | |
| CN103011835B (en) | Production process of high-compactness compound ceramic ball bearing rolling element | |
| CN103011833B (en) | Production process of silicon nitride ceramic ball bearing rolling element | |
| CN103848628A (en) | Silicon nitride ceramic ball | |
| CN103011834A (en) | Preparation method for high-compactness composite ceramic | |
| CN104357697A (en) | Method for preparing compact biological titanium alloy by using spark plasma sintering method | |
| CN105132799A (en) | Powder metallurgy material for unilateral bearing and preparing method of powder metallurgy material | |
| CN104609864B (en) | A kind of method utilizing ferro-silicon nitride powder to prepare block body ceramic material | |
| CN114290251B (en) | Fe-based cBN grinding wheel and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Dongju Inventor before: Li Dongju Inventor before: Zhen Hengzhou |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI DONGJU ZHEN HENGZHOU TO: LI DONGJU |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130424 |