Production process of ceramic cover plate
A preparation process and ceramic cover technology, which is applied in the field of ceramic cover plate preparation process for microwave packaging, can solve the problems of low dimensional accuracy of finished products, deformation, and inability to fire qualified products, etc., so as to improve yield rate and product accuracy, and improve sealing sexual effect
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[0050] Example 1
[0051] 1. Weighing: the solid raw materials are 92% alumina, 3% calcium oxide, 2% magnesium oxide, 2% silica, 0.5% nickel, 0.2% La 2 O 3 And 0.3% are respectively weighed according to the proportion;
[0052] 2. Ball milling: the solid raw materials are mixed uniformly and then ball milled to ensure that the mesh number of the mixed powder after ball milling is in the range of 3000-4000 mesh;
[0053] 3. Mixing: The mixed powder after ball milling and the organic solvent are mixed into a slurry at a weight ratio of 1:1; wherein the organic solvent is ethanol: methyl ethyl ketone = 1:1.5.
[0054] 4. Molding: According to product requirements, make the ceramic cover mold and ceramic base mold, and inject the slurry pressurized to 0.3MPa into the ceramic cover mold and ceramic base mold to form the ceramic cover blank And ceramic base body;
[0055] 5. Assembly: After covering the ceramic base body with a layer of 0.5mm thick adhesive powder, then assembling the ceram...
Example Embodiment
[0059] Example 2
[0060] 1. Weighing: the solid raw materials are 88% alumina, 3% calcium oxide, 4% magnesium oxide, 3% silica, 0.3% molybdenum, 0.7% iron and 1% Ce 2 O 3 Weigh separately according to the proportion;
[0061] 2. Ball milling: the solid raw materials are mixed uniformly and then ball milled to ensure that the mesh number of the mixed powder after ball milling is in the range of 2000-4000 mesh;
[0062] 3. Mixing: Mix the ball-milled mixed powder with an organic solvent at a weight ratio of 1:1.5 to form a slurry; wherein the organic solvent is ethanol: trichloroethylene=1:2.
[0063] 4. Molding: According to the product requirements, make the ceramic cover mold and ceramic base mold, and inject the slurry pressurized to 0.4MPa into the ceramic cover mold and the ceramic base mold to form the ceramic cover blank And ceramic base body;
[0064] 5. Assembly: After covering the ceramic base body with a layer of 0.3mm thick adhesive powder, then assembling the ceramic cover...
Example Embodiment
[0068] Example 3
[0069] 1. Weighing: the solid raw materials are 90% alumina, 5% calcium oxide, 3% magnesium oxide, 1% silica, 0.2% titanium, 0.5% ZrO 2 And 0.3% CeO 2 Rare earth metal oxides are weighed separately according to the proportion;
[0070] 2. Ball milling: the solid raw materials are mixed uniformly and then ball milled to ensure that the mesh number of the mixed powder after ball milling is in the range of 2000-2500 mesh;
[0071] 3. Mixing: The mixed powder after ball milling and the organic solvent are mixed into a slurry at a weight ratio of 1:2; wherein the organic solvent is ethanol: toluene=1:1.
[0072] 4. Molding: According to product requirements, make ceramic cover molds and ceramic base molds, and inject the slurry pressurized to 0.5MPa into the ceramic cover molds and ceramic base molds to form the ceramic cover blanks. And ceramic base body;
[0073] 5. Assembly: After covering the ceramic base body with a layer of 0.6mm thick adhesive powder, then assembli...
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