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

Active Publication Date: 2016-11-16

FOSHAN HUAZHI ADVANCED MATERIALS CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

However, the ceramic cover plate made by dry pressing method is very easy to crack during sintering, and the yield is low, and the dimensional accuracy of the fired product is not high.

(2) Traditional ceramics use...

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Method used

[0040] It should be noted that the ceramic base body 2 of the present invention is prepared from raw materials for making the ceramic cover body 1, and the shrinkage rate of the two is consistent so that the ceramic cover plate is not deformed. The shape of the ceramic cover body 1 may be changed due to product requirements, while the cera...

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Abstract

The present invention discloses a production process of a ceramic cover plate, comprising the following steps of weighing: weighing solid materials respectively according to a ratio; ball milling: mixing well the solid materials, and ball-milling; mixing: mixing the ball-milled mixed power and an organic solvent according to a weight ratio of 1:(1-3) to obtain a slurry; forming: injecting the slurry respectively into a ceramic cover plate mold and a ceramic base mold, and forming to obtain a ceramic cover plate blank and a ceramic base blank; assembling: after covering the ceramic base blank with a layer of anti-adhesion powder, and assembling the ceramic cover plate blank and the ceramic base blank; sintering: placing the assembled ceramic cover plate blank and ceramic base blank in a sintering furnace, sintering at 1300-1600 DEG C for 5-20 hours to obtain the ceramic cover plate and a ceramic base; and deburring the ceramic cover plate to obtain a product. By using the production process, the product rarely deforms during sintering, product yield is increased, production cost is reduced, and product dimensional accuracy is improved.

Technology Topic

Ball millOrganic solvent +3

Image

Examples

Experimental program(5)

Example Embodiment

[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 ceramic cover body and the ceramic base body;

[0056] 6. Sintering: Put the assembled ceramic cover blank and ceramic base blank into a sintering furnace and sinter at 1450°C for 12 hours to obtain a ceramic cover and a ceramic base;

[0057] 7. Deburring: Disassemble the ceramic cover and the ceramic base, and put the sintered ceramic cover into a vibrating ball mill for 4 hours.

[0058] The ceramic cover plate obtained by the above steps is not easy to be deformed, has high precision and high yield.

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 body and the ceramic base body;

[0065] 6. Sintering: Put the assembled ceramic cover blank and ceramic base blank into a sintering furnace and sinter at 1500°C for 8 hours to obtain the ceramic cover and ceramic base;

[0066] 7. Deburring: Disassemble the ceramic cover plate and ceramic base, and put the sintered ceramic cover plate into a vibrating ball mill for 5 hours.

[0067] The ceramic cover plate obtained by the above steps is not easy to be deformed, has high precision and high yield.

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 assembling the ceramic cover body and the ceramic base body;

[0074] 6. Sintering: Put the assembled ceramic cover blank and ceramic base blank into a sintering furnace and sinter at 1380°C for 6 hours to obtain a ceramic cover and a ceramic base;

[0075] 7. Deburring: Disassemble the ceramic cover and the ceramic base, and put the sintered ceramic cover into a vibrating ball mill for 2 hours.

[0076] The ceramic cover plate obtained by the above steps is not easy to be deformed, has high precision and high yield.

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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Improve sealing

Production process of ceramic cover plate

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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