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A method for preparing zirconia ceramic microspheres by droplet molding

A technology of zirconia ceramics and molding equipment, applied in the field of ceramic material manufacturing

Active Publication Date: 2019-10-18
GUANGDONG ORIENT ZIRCONIC IND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zirconia ceramic grinding media is widely used in the grinding and dispersing industry because of its wear resistance, corrosion resistance and high temperature resistance. However, the existing preparation process is difficult to meet the requirements of its wear resistance and / or size specifications. Therefore, There is an urgent need to use a new process to prepare more wear-resistant small-sized zirconia ceramic grinding media

Method used

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  • A method for preparing zirconia ceramic microspheres by droplet molding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for preparing zirconia ceramic microspheres by droplet molding in this embodiment comprises the following steps:

[0033] (1) Drip forming

[0034] After the zirconia ceramic powder and the mixed glue are mixed evenly, they are added to the dripping molding equipment, and the zirconia ceramic particles are preformed by titration. After the formed zirconia ceramic particles are air-cooled and shaped, they fall into the cooling liquid by gravity. Collect and form the green body of zirconia ceramic microbeads;

[0035] (2) Degreasing

[0036] The collected zirconia ceramic microbead green body is taken out of the cooling liquid, then put into the degreasing liquid and heated to 80°C for degreasing, and the degreasing time is 2 hours;

[0037] (3) Insulation sintering

[0038] Heat the degreased zirconia ceramic microbead green body at a temperature of 1400°C for 4 hours, and sinter it into a zirconia ceramic microbead blank;

[0039] (4) polishing

[0040] ...

Embodiment 2

[0051] The method for preparing zirconia ceramic microspheres by droplet molding in this embodiment comprises the following steps:

[0052] (1) Drip forming

[0053] After the zirconia ceramic powder and the mixed glue are mixed evenly, they are added to the dripping molding equipment, and the zirconia ceramic particles are preformed by titration. After the formed zirconia ceramic particles are air-cooled and shaped, they fall into the cooling liquid by gravity. Collect and form the green body of zirconia ceramic microbeads;

[0054] (2) Degreasing

[0055] The collected zirconia ceramic microbead green body is taken out from the cooling liquid, then put into the degreasing liquid and heated to 90°C for degreasing, and the degreasing time is 1 hour;

[0056] (3) Insulation sintering

[0057] Heat the degreased zirconia ceramic bead green body at a temperature of 1350°C for 6 hours, and sinter it into a zirconia ceramic bead blank;

[0058] (4) polishing

[0059] The zirco...

Embodiment 3

[0070] The method for preparing zirconia ceramic microspheres by droplet molding in this embodiment comprises the following steps:

[0071] (1) Drip forming

[0072] After the zirconia ceramic powder and the mixed glue are mixed evenly, they are added to the dripping molding equipment, and the zirconia ceramic particles are preformed by titration. After the formed zirconia ceramic particles are air-cooled and shaped, they fall into the cooling liquid by gravity. Collect and form the green body of zirconia ceramic microbeads;

[0073] (2) Degreasing

[0074] The collected zirconia ceramic microbead green body is taken out from the cooling liquid, then put into the degreasing liquid and heated to 40°C for degreasing, and the degreasing time is 4 hours;

[0075] (3) Insulation sintering

[0076] Heat the degreased zirconia ceramic microbead green body at a temperature of 1550°C for 3 hours, and sinter it into a zirconia ceramic microbead blank;

[0077] (4) polishing

[0078...

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Abstract

The invention provides a method for preparing zirconium oxide ceramic micro-beads through titration forming. The method comprises the following steps: (1) adding zirconium oxide ceramic powder and mixed glue into titration forming equipment after mixing uniformly, performing titration pre-forming first to form zirconium oxide ceramic particles, performing air-cooling setting on the formed zirconium oxide ceramic particles, then falling the zirconium oxide ceramic particles into cooling liquid by virtue of gravity, and collecting and forming zirconium oxide ceramic micro-bead green bodies; (2) taking the collected zirconium oxide ceramic micro-bead green bodies out of the cooling liquid, then putting the zirconium oxide ceramic micro-bead green bodies into a degreasing solution, and heating to 40-90 DEG C for degreasing; (3) preserving the temperature of the zirconium oxide ceramic micro-bead green bodies after degreasing for 3-6 hours at a temperature of 1350-1550 DEG C, and performing sintering to obtain zirconium oxide ceramic micro-bead blanks;(4) polishing the zirconium oxide ceramic micro-bead blanks to obtain the zirconium oxide ceramic micro-beads. By using the method provided by the invention, the zirconium oxide ceramic micro-beads with a small specification can be prepared, and the prepared zirconium oxide ceramic micro-beads are more uniform and wearable.

Description

technical field [0001] The invention relates to a method for manufacturing ceramic materials, in particular to a method for preparing zirconia ceramic microbeads by droplet molding. Background technique [0002] With the increasing demand for ultra-fine powder, the demand for grinding media with a particle size below 1mm is also increasing. Zirconia ceramic grinding media is widely used in the grinding and dispersing industry because of its wear resistance, corrosion resistance and high temperature resistance. However, the existing preparation process is difficult to meet the requirements of its wear resistance and / or size specifications. Therefore, There is an urgent need to use a new process to prepare more wear-resistant small-sized zirconia ceramic grinding media. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for preparing zirconia ceramic microbeads by droplet molding, which can produce more wear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/626C04B35/486
Inventor 许小军陈潮钿张圣祥
Owner GUANGDONG ORIENT ZIRCONIC IND SCI & TECH CO LTD
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