CN103252823A - Forming method for super wear-resistant alumina ceramic ball - Google Patents
Forming method for super wear-resistant alumina ceramic ball Download PDFInfo
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- CN103252823A CN103252823A CN2013101737947A CN201310173794A CN103252823A CN 103252823 A CN103252823 A CN 103252823A CN 2013101737947 A CN2013101737947 A CN 2013101737947A CN 201310173794 A CN201310173794 A CN 201310173794A CN 103252823 A CN103252823 A CN 103252823A
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- Prior art keywords
- forming method
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- moulding
- pug
- alumina ceramic
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Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 239000011265 semifinished product Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 3
- 238000005245 sintering Methods 0.000 claims abstract description 3
- 238000000465 moulding Methods 0.000 claims description 27
- 238000000498 ball milling Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 241001408630 Chloroclystis Species 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 235000012222 talc Nutrition 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 239000000047 product Substances 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000000227 grinding Methods 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 24
- 238000007664 blowing Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000000462 isostatic pressing Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- -1 pottery Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a forming method for a super wear-resistant alumina ceramic ball. The forming method includes a first step of providing pug with 17-25% of moisture content through working procedures of material proportioning, ball grinding, filtering, iron removing, mud squeezing, vacuum pugging and the like, a second step of sending the pug into an injection molding machine, a third step of enabling the pug to be injected into a metal mold cavity at high speed within 1/5-1/2 second, and opening a mold and forming the super wear-resistant alumina ceramic ball, wherein injection pressure in the injection process is 1-3MPa, and temperature of the metal mold in the forming process is controlled within 130-200 DEG C, and a fourth step of carrying out high-temperature sintering on formed semi-finished products at 1450 DEG C, carrying out heat preservation for two hours and obtaining the products. Equivalent abrasion of the products reaches 0.054 %., rupture strength of the products reaches 320MPa, and degree of sphericity is bigger than 95%. The forming method enables main performance index of the products to be remarkably improved, and expands application scope of the products.
Description
Technical field
The invention belongs to Inorganic Non-metallic Materials (pottery) field, be specifically related to a kind of forming method of super wear-resisting alumina ceramic ball.
Background technology
Aluminium oxide (Al
2O
3) pottery is in high-tech and sophisticated industry, obtains more and more widely application as aspects such as aluminium oxide ceramics ball, microelectronics, nuclear reactor, magnetohydrodynamic generator, space flight, artificial bone and joint prosthesises.Wherein the aluminium oxide ceramics ball is a kind of important engineering pottery.Because aluminium oxide ceramics ball hardness height, density is big, can make charge increase in the abrasive body; The ballstone densification, neat specification, the probability of collision is big, the grinding efficiency height; The chemical composition of polished material is stable, and therefore, the aluminium oxide ceramics ball is widely used in raw material grinding and the processing of industries such as white cement, mineral, pottery, electronic material, magnetic material and coating, paint, is a kind of abrasive media commonly used.In Building Ceramics Industry, the wearing and tearing efficient of aluminium oxide ceramics ball improves 20%～40% than natural rubble and cobblestone.Along with the minimizing of the natural ballstone resource of high-quality, the characteristics that conventional ceramic ball loss late is high, the aluminium oxide ceramics ball will be used by increasing ceramic producer.Just because of this, the research of aluminium oxide ceramics ball is also become one of the field of enlivening very much in the chemistry and material subject research in recent years.
For the production of aluminium oxide ceramics ball, traditional forming method has dry-press process and wet moulding.The blank structure that dry-press process obtains is inhomogeneous, and powder is reunited easily.Wet moulding comprises injection forming and injection moulding, and also there are various defectives in they.There is big, the bulk density skewness of base substrate moisture content in injection forming, and is dry and burn till and shrink greatly, and the Ceramic Balls size is difficult to control, shortcomings such as production efficiency is low, injection moulding then need add the organic additive of volume content 45%-50%, and degreasing time is long, and base substrate easily produces defective.The forming method of domestic present aluminium oxide ceramics ball mainly contains two kinds, is respectively isostatic compaction and rolling moulding.At present the aluminium oxide forming method use many be isostatic compaction, isostatic compaction is that sample to be pressed is placed high-pressure bottle, utilize the incompressible character of liquid medium and the even character of transmitting pressure from all directions sample evenly to be pressurizeed, when liquid medium passes through compression pump injection pressure container, according to fluid mechanics principle, its pressure size is constant and be delivered to all directions equably.The pressure that this moment, the powder in the high-pressure bottle was subjected in all directions is uniformly and of the same size.Isostatic pressing method requires relatively stricter to powder, exist problem such as to be not easy to control, the qualification rate of product is low, efficient is low, and the rolling moulding is unfavorable for machine production that manually-operated intensity is big, and is wayward.Therefore, in order to satisfy the requirement of modern technologies, improve reliability of products and reduce production costs, various Wetting moulding process arise at the historic moment.
Summary of the invention
The forming method that the purpose of this invention is to provide a kind of super wear-resisting alumina ceramic ball, this method can generate spherical base substrate by dead size, the sphericity of product, abrasion, performance indications such as rupture strength can both be significantly improved.
In order to realize goal of the invention, the technical solution used in the present invention is: a kind of forming method of super wear-resisting alumina ceramic ball, comprise that providing moisture content through operations such as batching, ball milling, filtration, deironing, press filt, vacuum puggings is 17～25% pugs, composition of raw materials is: alumina powder 92wt%, kaolin 6wt%, talcum 0.6wt%, TZP 1.2wt%, La
2O
3/ Y
2O
30.2 wt%, it is characterized in that: described pug is sent into the injection molded machine, in 1/5～1/2 second, make the spray of pug high speed die sinking immediately and moulding to the metal pattern die cavity, the injection pressure of spray process is 1～3 MPa, the temperature control of metal pattern when moulding is at 130～200 ℃, then with the semi-finished product after the moulding through 1450 ℃ of high temperature sinterings, be incubated 2 hours.
In above-mentioned ball milling operation, raw material is ball milling in ball mill, preferably moves 16～30 hours blowings.
The concrete processing step of the present invention is as follows:
One, raw mix and water are proportionally put into the ball mill ball milling, move 16～30 hours blowings;
Two, after mud is gone into the pond, start mixer, take out pulp grinder, filter through vibratory sieve, flow into the deironing stock tank simultaneously;
Three, behind the deironing stock tank, again by take out stock pump with slush pump to slip drying press, make slurry dewatering make mud cake;
Four, mud cake is through the vacuum deairing machine refining, and control moisture is 17～25%;
Five, the pug that step 4 is obtained is sent into the spout of injection molded machine, in 1/5～1/2 second plastic mud material is imposed on pressure, makes pug inject die sinking immediately in the metal pattern die cavity at a high speed and moulding; Injection pressure in this process is 1～3 MPa, and the temperature control of metal pattern when moulding is at 130～200 ℃;
Six, the semi-finished product after the step 5 moulding are put into saggar, enter in the kiln, under 1450 ℃, burn till, be incubated 2 hours.
The present invention compared with prior art has following technical advantage: the green compact uniform microstructure of injection molded preparation, can generate spherical base substrate by dead size, the sphericity height of moulding; Need not to add binding agent in addition in the molding blank, and forming operation is simple, the Ceramic Balls of injection molded preparation can be improved structure and the performance of its sintered body, cause sintered ceramic spherical structure and performance more stable, can significantly improve reliability of material, effectively reduce material at work break and damaged.
Adopt the equivalent abrasion of the aluminium oxide ceramics ball of the inventive method preparation can reach 0.054 ‰, rupture strength reaches 320 MPa, Mohs' hardness is 9, sphericity＞95%, its abrasion, rupture strength have had significant raising than the aluminium oxide ceramics ball of existing isostatic pressing method preparation, and Mohs' hardness, sphericity all can reach the standard of existing aluminium oxide ceramics ball.So the present invention utilizes insufflation formed alumina Ceramic Balls that Alumina Ceramics is further improved and enlarges its application.
The specific embodiment
Below each example adopt all as described above that same composition of raw materials compares experimental study, wherein embodiment 1～3 is the present invention program's embodiment, embodiment 4 is the embodiment of prior art isostatic pressing method.
Embodiment 1
One, raw mix and water are proportionally put into the ball mill ball milling, move 20 hours blowings;
Two, after mud is gone into the pond, start mixer, take out pulp grinder, filter through vibratory sieve, flow into the deironing stock tank simultaneously;
Three, behind the deironing stock tank, again by take out stock pump with slush pump to slip drying press, make slurry dewatering make mud cake;
Four, mud cake through the vacuum deairing machine refining, makes that moisture is 21% again;
Five, the pug that step 4 is obtained is sent into the injection molded machine and in 0.5 plastic mud material is imposed on pressure, makes it inject die sinking immediately in the metal pattern die cavity at a high speed and moulding; Injection pressure in this process is 1.5MPa, and the temperature control of metal pattern when moulding is at 150 ℃;
Six, the semi-finished product after the step 5 moulding are put into saggar, enter in the kiln, under 1450 ℃, burn till, be incubated 2 hours.
Embodiment 2
One, raw mix and water are proportionally put into the ball mill ball milling, move 25 hours blowings;
Two, after mud is gone into the pond, start mixer, take out pulp grinder, filter through vibratory sieve, flow into the deironing stock tank simultaneously;
Three, behind the deironing stock tank, again by take out stock pump with slush pump to slip drying press, make slurry dewatering make mud cake;
Four, mud cake through the vacuum deairing machine refining, makes that moisture is 23% again;
Five, the pug that step 4 is obtained is sent into the injection molded machine and in 0.4 plastic mud material is imposed on pressure, makes it inject die sinking immediately in the metal pattern die cavity at a high speed and moulding; Injection pressure in this process is 1MPa, and the temperature control of metal pattern when moulding is at 180 ℃;
Six, the semi-finished product after the step 5 moulding are put into saggar, enter in the kiln, under 1500 ℃ of conditions, burn till, be incubated after 2 hours, namely finish and fire.
Embodiment 3
One, raw mix and water are proportionally put into the ball mill ball milling, move 27 hours blowings;
Two, after mud is gone into the pond, start mixer, take out pulp grinder, filter through vibratory sieve, flow into the deironing stock tank simultaneously;
Three, behind the deironing stock tank, again by take out stock pump with slush pump to slip drying press, make slurry dewatering make mud cake;
Four, mud cake through the vacuum deairing machine refining, makes that moisture is 25% again;
Five, the pug that step 4 is obtained is sent into the injection molded machine and in 0.2 second plastic mud material is imposed on pressure, makes it inject die sinking immediately in the metal pattern die cavity at a high speed and moulding; Injection pressure in this process is 2MPa, and the temperature control of metal pattern when moulding is at 200 ℃;
Six, the semi-finished product after the step 5 moulding are put into saggar, enter in the kiln, under 1450 ℃, burn till, be incubated 2 hours.
Embodiment 4
One, raw mix and water are proportionally put into the ball mill ball milling, move 20 hours blowings;
Two, after mud is gone into the pond, start mixer, take out pulp grinder, filter through vibratory sieve, flow into the deironing stock tank simultaneously;
Three, behind the deironing stock tank, again by take out stock pump with slush pump to slip drying press, make slurry dewatering make mud cake;
Four, mud cake through the vacuum deairing machine refining, makes that moisture is 25% again;
Five, the pug that step 4 is obtained is sent into spray drying tower and is carried out granulation;
Six, powder that granulation is good is sent into the isostatic compaction machine and is carried out moulding;
Seven, the semi-finished product after the step 6 moulding are put into saggar, enter in the kiln, under 1450 ℃, burn till, be incubated 2 hours.
According to the industrial ceramics industry standard, the aluminium oxide ceramics ball of the various embodiments described above preparations is placed in the polyurethane jar carries out impact grinding with defined terms, detect the equivalent abrasion of aluminium oxide ceramics ball, and survey the compression strength of aluminium oxide Ceramic Balls with the compression strength instrument, the performance indications that record the aluminium oxide ceramics ball see the following form:
Above result shows: embodiment 1, embodiment 2, embodiment 3 are significantly improved in abrasion than example 4, and the compression strength of product also slightly promotes.Adopt the inventive method can obviously improve the performance that has the alumina balls mill now, and cost of material is lower, forming operation is simple, and equipment investment is little, reduces enterprise's production cost, enhances productivity suitable batch production.
Claims (2)
1. the forming method of a super wear-resisting alumina ceramic ball comprises that providing moisture content through operations such as batching, ball milling, filtration, deironing, press filt, vacuum puggings is 17～25% pugs, and composition of raw materials is: alumina powder 92wt%, kaolin 6wt%, talcum 0.6wt%, TZP 1.2wt%, La
2O
3/ Y
2O
30.2 wt%, it is characterized in that: described pug is sent into the injection molded machine, in 1/5～1/2 second, make the spray of pug high speed die sinking immediately and moulding to the metal pattern die cavity, the injection pressure of spray process is 1～3 MPa, the temperature control of metal pattern when moulding is at 130～200 ℃, then with the semi-finished product after the moulding through 1450 ℃ of high temperature sinterings, be incubated 2 hours.
2. the forming method of super wear-resisting alumina ceramic ball as claimed in claim 1 is characterized in that: ball milling running time is 16～30 hours.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310173794.7A CN103252823B (en) | 2013-05-13 | 2013-05-13 | A kind of forming method of Ultra-wear-resistantalumina alumina ceramic ball |
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|---|---|---|---|
| CN201310173794.7A CN103252823B (en) | 2013-05-13 | 2013-05-13 | A kind of forming method of Ultra-wear-resistantalumina alumina ceramic ball |
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| CN103252823B CN103252823B (en) | 2015-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590340A (en) * | 2019-10-29 | 2019-12-20 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
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| CN101247911A (en) * | 2005-07-16 | 2008-08-20 | 研磨剂与耐火品研究与开发中心C.A.R.R.D.有限公司 | Nanocrystalline sintered bodies made from alpha aluminium oxide method for production and use thereof |
| CN101857444A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Thermal state ceramic jetting material for longevity type blast furnace |
| CN102040386A (en) * | 2010-11-01 | 2011-05-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Torpedo can spouting material and spouting method thereof |
| CN102247913A (en) * | 2011-04-18 | 2011-11-23 | 西峡县新锦耐化有限责任公司 | Technology for premixing powder part of refractory material in alumina ceramic ball mill |
| WO2012045248A1 (en) * | 2010-10-08 | 2012-04-12 | Li Yadong | Artificial hip joint consisting of multi-layer shell core composite structural components |
| CN102491735A (en) * | 2011-11-22 | 2012-06-13 | 中国铝业股份有限公司 | Method for producing aluminium oxide ceramic ball |
-
2013
- 2013-05-13 CN CN201310173794.7A patent/CN103252823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247911A (en) * | 2005-07-16 | 2008-08-20 | 研磨剂与耐火品研究与开发中心C.A.R.R.D.有限公司 | Nanocrystalline sintered bodies made from alpha aluminium oxide method for production and use thereof |
| CN101857444A (en) * | 2010-05-21 | 2010-10-13 | 河南华西耐火材料有限公司 | Thermal state ceramic jetting material for longevity type blast furnace |
| WO2012045248A1 (en) * | 2010-10-08 | 2012-04-12 | Li Yadong | Artificial hip joint consisting of multi-layer shell core composite structural components |
| CN102040386A (en) * | 2010-11-01 | 2011-05-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Torpedo can spouting material and spouting method thereof |
| CN102247913A (en) * | 2011-04-18 | 2011-11-23 | 西峡县新锦耐化有限责任公司 | Technology for premixing powder part of refractory material in alumina ceramic ball mill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110590340A (en) * | 2019-10-29 | 2019-12-20 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
| CN110590340B (en) * | 2019-10-29 | 2022-04-01 | 洛阳市科创绿色建材研究院 | Preparation method of andalusite-containing high-wear-resistance alumina grinding body |
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| CN103252823B (en) | 2015-08-12 |
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Denomination of invention: A Forming Method of Ultra wear-resistant Alumina Ceramic Ball Effective date of registration: 20231018 Granted publication date: 20150812 Pledgee: Jingdezhen branch of Postal Savings Bank of China Ltd. Pledgor: JINGDEZHEN BETTERWEAR NEW MATERIALS Co.,Ltd. Registration number: Y2023980061649 |