CN110606739A - Formula and production process of zirconia ceramic ball - Google Patents
Formula and production process of zirconia ceramic ball Download PDFInfo
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Abstract
The invention discloses a formula of zirconia ceramic balls, which comprises the following components in parts by weight: 90% > ZrO2+ HfO2 is more than or equal to 75%; 15% > CeO2> 5%; 5% or more of Al2O3 is or more than 0.1%; 5% or more of Y2O3 is or more than 0.1%; 2 percent or more than or equal to 0.1 percent of additive, wherein the additive is one or a combination of more than one of CaO, MgO, Fe3O4, Fe2O3, FeO, CuO, TiO2, Sb2O3, ZnO, MnO2 and Mn3O 4; 1% or more of other components. The invention can ensure the density and hardness of the ceramic ball and reduce the production cost.
Description
Technical Field
The invention belongs to the field of special ceramics, and particularly relates to a zirconia ceramic ball and a production process thereof.
Background
With the rapid development of the powder superfine technology, the requirements of industries such as electronics, paper making, ceramics, chemical industry, paint, printing ink, plastics and the like on the fineness of the powder are higher and higher, and even some powder needs to reach the nanometer level. After the superfine powder is used, the performance of the material can be improved. The material is superfinely ground at home and abroad by a physical method, the best and most economical method is wet grinding, and ceramic balls with various diameter specifications are necessarily used as grinding media in the process.
At present, more zirconium silicate ceramic balls and alumina ceramic balls are used, and the proportion is lower, while the production cost of the zirconia ceramic balls is higher.
Disclosure of Invention
Aiming at the defects of the existing product, the invention provides the zirconia ceramic ball which can ensure the high density and hardness of the ceramic ball and reduce the production cost.
In order to achieve the purpose, the invention provides the following technical scheme: the formula of the zirconia ceramic ball comprises the following components in parts by weight:
90%>ZrO2+HfO2≥75%；
15%>CeO2>5%；
5%≥Al2O3≥0.1%；
5%≥Y2O3≥0.1%；
2% or more than 0.1% of additive;
1% or more of other components.
The further formula comprises the following components in parts by weight:
87%>ZrO2+HfO2≥80%；
13%>CeO2>8%；
4%≥Al2O3≥1%；
3%≥Y2O3≥1%；
2% or more than 0.1% of additive;
1% or more of other components.
Further the additive is one or more of CaO, MgO, Fe3O4, Fe2O3, FeO, CuO, TiO2, Sb2O3, ZnO, MnO2 and Mn3O 4.
Further the other component is an oxide.
A production process of zirconia ceramic balls comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to above 1300 ℃ at the speed of 120 ℃/hr, preserving heat for 1-4 hours, and naturally cooling to room temperature.
Compared with the prior art, the invention has the beneficial effects that: the invention can reduce the production cost on the premise of ensuring the wear resistance and hardness of the final ceramic ball.
Detailed Description
The formula of the zirconia ceramic ball comprises the following components in parts by weight:
90%>ZrO2+HfO2≥75%；
15%>CeO2>5%；
5%≥Al2O3≥0.1%；
5%≥Y2O3≥0.1%；
2% or more than 0.1% of additive;
1% or more of other components.
In the embodiment, the preferable 87% > ZrO2+ HfO2 is more than or equal to 80%;
13%>CeO2>8%；
4%≥Al2O3≥1%；
3%≥Y2O3≥1%；
2% or more than 0.1% of additive;
1% or more of other components.
The additive in the embodiment is preferably one or more of CaO, MgO, Fe3O4, Fe2O3, FeO, CuO, TiO2, Sb2O3, ZnO, MnO2 and Mn3O 4.
Further the other component is an oxide.
A production process of zirconia ceramic balls comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to above 1300 ℃ at the speed of 120 ℃/hr, preserving heat for 1-4 hours, and naturally cooling to room temperature.
The first embodiment is as follows:
a zirconia ceramic ball comprises the following components in percentage by weight:
ZrO2+HfO2:85.5%；
CeO2:10%；
Al2O3:2%；
Y2O3:2%；
CaO:0.5%。
the production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1450 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 5.5g/cm3, the hardness is more than or equal to 1100HV, and the abrasion is less than or equal to 0.3g/hr.kg.2000 r/min.
Example two:
a zirconia ceramic ball comprises the following components in percentage by weight:
ZrO2+HfO2:85.5%；
CeO2:10%；
Al2O3:2%；
Y2O3:2%；
MgO:0.5%。
the production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1450 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 5.5g/cm3, the hardness is more than or equal to 1100HV, and the abrasion is less than or equal to 0.35g/hr.kg.2000 r/min.
Example three:
a zirconia ceramic ball comprises the following components in percentage by weight:
ZrO2+HfO2:83.5%；
CeO2:12%；
Al2O3:2%；
Y2O3:2%；
Fe2O3:0.5%。
the production process comprises the following steps:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to 1450 ℃ at the speed of 120 ℃/hr, preserving heat for 4 hours, and naturally cooling to room temperature.
The density of the prepared ceramic ball is more than or equal to 5.5g/cm3, the hardness is more than or equal to 1100HV, and the abrasion is less than or equal to 0.35g/hr.kg.2000 r/min.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. The formula of the zirconia ceramic ball is characterized in that the formula comprises the following components in parts by weight:
90%>ZrO2+HfO2≥75%；
15%>CeO2>5%；
5%≥Al2O3≥0.1%；
5%≥Y2O3≥0.1%；
2% or more than 0.1% of additive;
1% or more of other components.
2. The formulation of zirconia ceramic balls according to claim 1, wherein: the formula comprises the following components in parts by weight:
87%>ZrO2+HfO2≥80%；
13%>CeO2>8%；
4%≥Al2O3≥1%；
3%≥Y2O3≥1%；
2% or more than 0.1% of additive;
1% or more of other components.
3. The formulation of zirconia ceramic balls according to claim 1, wherein: the additive is one or a combination of more of CaO, MgO, Fe3O4, Fe2O3, FeO, CuO, TiO2, Sb2O3, ZnO, MnO2 and Mn3O 4.
4. The formulation of zirconia ceramic balls according to claim 2, wherein: the other component is an oxide.
5. A process for producing zirconia ceramic balls according to claim 1, comprising the steps of:
1) preparing raw materials: uniformly mixing all raw materials in the formula, ball-milling by adopting a wet method until the intermediate diameter is less than 1um, and spray-drying to obtain superfine powder;
2) molding: placing the superfine powder into a ball forming mill, adding water, mixing and stirring uniformly, sieving to obtain a ball with the particle size of 0.1-0.5mm, adding the ball into the ball forming mill, and continuously adding the water and the superfine powder onto the ball until the ball is enlarged to a ceramic ball green compact with the particle size of 0.2-15 mm;
3) and (3) sintering: heating the ceramic ball green body to 300 ℃ in a kiln at the speed of 60 ℃/hr, then preserving heat for 1hr, heating to above 1300 ℃ at the speed of 120 ℃/hr, preserving heat for 1-4 hours, and naturally cooling to room temperature.
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Cited By (3)
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| WO2021198520A1 (en) * | 2020-04-03 | 2021-10-07 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Sintered zirconia balls |
| FR3118029A1 (en) * | 2020-12-22 | 2022-06-24 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | MAGNETIC BALL |
| FR3127492A1 (en) * | 2021-09-28 | 2023-03-31 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | ZIRCONIA SINTERED BEADS |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021198520A1 (en) * | 2020-04-03 | 2021-10-07 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Sintered zirconia balls |
| FR3108904A1 (en) * | 2020-04-03 | 2021-10-08 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | ZIRCONIA FRIED BEADS |
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| FR3118029A1 (en) * | 2020-12-22 | 2022-06-24 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | MAGNETIC BALL |
| WO2022136176A1 (en) * | 2020-12-22 | 2022-06-30 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Magnetic ball |
| CN116669856A (en) * | 2020-12-22 | 2023-08-29 | 法商圣高拜欧洲实验及研究中心 | Magnetic ball |
| FR3127492A1 (en) * | 2021-09-28 | 2023-03-31 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | ZIRCONIA SINTERED BEADS |
| WO2023052303A1 (en) * | 2021-09-28 | 2023-04-06 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Sintered zirconia beads |
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