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Microwave dielectric ceramic filter dry-pressing one-time forming method and ceramic filter
The invention discloses a microwave dielectric ceramic filter dry-pressing one-time forming method which comprises the following steps: step 1, uniformly mixing 100 parts by weight of ASCT powder and1-5 parts by weight of an organic carrier, and performing spray granulation to obtain dry-pressed granules, wherein the ASCT powder is formed by mixing Al2O3, Sm2O3, CaCo3 and TiO2 according to a specific weight percentage; step2, carrying out dry-pressing molding on the dry-pressed granules through a precision mold to obtain a green body; and 3, sintering the green body to obtain the ceramic filter main body. According to the invention, Al2O3, Sm2O3, CaCo3 and TiO2 are used as main materials; spray granulation is performed on the main material and an organic carrier, so the comprehensive performance of the obtained dry-pressed granules is more stable; the shrinkage error is within 0.2%; the density of the green body is 3 +/-0.1 g/cm < 3 >, and the density of the sintered product is greater than or equal to 5.0 g/cm < 3 >; the size parameters of the sintered product can be free from processing by combining a high-precision runner mold, the primary yield of the product is greater than or equal to 90%, the production efficiency and the production quality of the ceramic filter are improved, and the production cost of enterprises is reduced.
本发明公开一种微波介质陶瓷滤波器干压一次成型方法，包括以下步骤：步骤一：将重量份为100的ASCT粉体和重量份为1‑5的有机载体混合均匀，通过喷雾造粒后获得干压颗粒料；其中，ASCT粉体由特定重量百分比的AlO、SmO、CaCo、TiO混合形成；步骤二：将干压颗粒料经过精密模具干压成型，得到坯体；步骤三：对坯体进行烧结得到陶瓷滤波器主体。本发明通过采用AlO、SmO、CaCo、TiO作为主体材料，并将主体材料与有机载体进行喷雾造粒，得到的干压颗粒料综合性能更稳定，收缩率误差在0.2％以内，生坯密度在3±0.1g/cm，烧结后产品密度≥5.0g/cm，结合高精密流道模具可以做到产品烧结后尺寸参数免加工，且产品一次良率≥90％，提高陶瓷滤波器的生产效率和生产质量，降低企业生产成本。
Microwave dielectric ceramic filter dry-pressing one-time forming method and ceramic filter
The invention discloses a microwave dielectric ceramic filter dry-pressing one-time forming method which comprises the following steps: step 1, uniformly mixing 100 parts by weight of ASCT powder and1-5 parts by weight of an organic carrier, and performing spray granulation to obtain dry-pressed granules, wherein the ASCT powder is formed by mixing Al2O3, Sm2O3, CaCo3 and TiO2 according to a specific weight percentage; step2, carrying out dry-pressing molding on the dry-pressed granules through a precision mold to obtain a green body; and 3, sintering the green body to obtain the ceramic filter main body. According to the invention, Al2O3, Sm2O3, CaCo3 and TiO2 are used as main materials; spray granulation is performed on the main material and an organic carrier, so the comprehensive performance of the obtained dry-pressed granules is more stable; the shrinkage error is within 0.2%; the density of the green body is 3 +/-0.1 g/cm < 3 >, and the density of the sintered product is greater than or equal to 5.0 g/cm < 3 >; the size parameters of the sintered product can be free from processing by combining a high-precision runner mold, the primary yield of the product is greater than or equal to 90%, the production efficiency and the production quality of the ceramic filter are improved, and the production cost of enterprises is reduced.
本发明公开一种微波介质陶瓷滤波器干压一次成型方法，包括以下步骤：步骤一：将重量份为100的ASCT粉体和重量份为1‑5的有机载体混合均匀，通过喷雾造粒后获得干压颗粒料；其中，ASCT粉体由特定重量百分比的AlO、SmO、CaCo、TiO混合形成；步骤二：将干压颗粒料经过精密模具干压成型，得到坯体；步骤三：对坯体进行烧结得到陶瓷滤波器主体。本发明通过采用AlO、SmO、CaCo、TiO作为主体材料，并将主体材料与有机载体进行喷雾造粒，得到的干压颗粒料综合性能更稳定，收缩率误差在0.2％以内，生坯密度在3±0.1g/cm，烧结后产品密度≥5.0g/cm，结合高精密流道模具可以做到产品烧结后尺寸参数免加工，且产品一次良率≥90％，提高陶瓷滤波器的生产效率和生产质量，降低企业生产成本。
Microwave dielectric ceramic filter dry-pressing one-time forming method and ceramic filter
微波介质陶瓷滤波器干压一次成型方法及其陶瓷滤波器
ZHANG BAOLIN (author)
2020-08-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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