Green body molding method of ceramic microbeads
A technology of ceramic microbeads and molding methods, which is applied in the field of special ceramics, can solve the problems of low production efficiency, high production cost, and difficulty in forming small and micro-sized products, and achieve the effects of improving production efficiency, reducing self-wear, and increasing volume density
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Embodiment 1
[0022] Take 20Kg of alumina ceramic microbead green body (92% content) with a particle size of 3mm rolled into shape, heat the liquid silica gel to 120°C and keep the temperature stable, then pour the 20Kg microbead green body Put it into liquid silica gel, and turn on the stirring device at the same time. After 10 minutes, take out the ball blank coated with organic matter with a tool. After 5 minutes, it can be dried and solidified; Secondary pressure molding, the molding pressure is 90MPa, and qualified semi-finished products can be obtained. After low-temperature firing to remove organic matter and high-temperature firing, the product manufacturing is completed.
[0023] After testing, the performance index of the product obtained in this embodiment is as follows: the bulk density is 3.76g / cm 3 , the flexural strength is 500MPa, self-wear ≤0.15g / Kg.h.
Embodiment 2
[0025] Take 10Kg of spray-molded zirconia ceramic microbead body with a particle size of 0.2mm, heat the liquid silica gel to 260°C and keep the temperature stable, then pour 10Kg of the microbead body into the liquid silica gel, and open the Stirring device, after 10 minutes, take out the ball blank coated with organic matter with a tool, and after 5 minutes, it can be dried and solidified; the processed ball blank is subjected to secondary pressure molding through a cold isostatic press, and the shape The pressure is 150MPa, and qualified semi-finished products can be obtained, and the product is manufactured after low-temperature firing to remove organic matter and high-temperature firing.
[0026] After testing, the performance index of the product obtained in this embodiment is as follows: the bulk density is 6.75g / cm 3 , the flexural strength is 1500MPa, self-wear ≤ 6ppm / Kg.h.
Embodiment 3
[0028] Take 5Kg of injection-molded silicon oxide ceramic microbead body with a particle size of 0.3mm, heat the liquid silica gel to 260°C and keep the temperature stable, then pour 5Kg of the microbead body into the liquid silica gel, and open the Stirring device, after 10 minutes, take out the ball blank coated with organic matter with a tool, and after 5 minutes, it can be dried and solidified; the processed ball blank is subjected to secondary pressure molding through a cold isostatic press, and the shape The pressure is 170MPa, and qualified semi-finished products can be obtained, and the product manufacturing is completed after low-temperature firing to remove organic matter and high-temperature firing.
[0029] After testing, the performance index of the product obtained in this embodiment is as follows: the bulk density is 3.26g / cm 3 , the bending strength is 1000MPa, and the hardness (HV) is 1800MPa.
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Abstract
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