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Process for producing heat-preserving ceramic through vacuum sintering
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A technology for thermal insulation ceramics and production process, applied in the field of ceramic manufacturing, can solve the problems of inability to form interlayer vacuum effect, thermal insulation effect can not reach vacuum thermal insulation effect, etc., achieves significant thermal insulation effect, achieves thermal insulation effect, and prolongs the effect of thermal insulation time
Inactive Publication Date: 2013-10-30
HENAN UNIV OF SCI & TECH
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That is to say, it is only consciously designed as an interlayer during the production process, and the air in the interlayer is not completely removed. Because there is air in the interlayer and communicates with the atmosphere, the insulation effect cannot reach the true vacuum insulation effect.
2. In the firing process of sandwich insulation ceramics, the firing process adopted is no different from that of ordinary ceramic products, so it cannot form a real sandwich vacuum effect
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specific Embodiment ： Embodiment 1
[0029] Taking the production of a vacuum thermal insulation ceramic bowl as an example, the production process includes the following steps:
[0030] (1) Prefabrication of vacuum sandwich ceramic bowls:
[0031] The ceramic slurry is prepared according to the conventional ceramic production process, wherein the components of the slurry are: kaolin 30%, porcelain stone 12%, feldspar 16%, quartz 30%, bone ash 12%.
[0032] The semi-finished product of vacuum sandwich ceramic bowl is made by conventional grouting method:
[0033] a. Clamping the yin and yang molds: Dry the yin and yang molds separately at 70°C until the moisture content of the yin and yang molds is about 6%; close the dried yin and yang molds and prepare for injection pulp;
[0034] b. Grouting: Before grouting, wipe the surface of the male and female molds with a wet sponge, then fully stir the mud and inject it into the closed male and female molds, and pour out the excess mud from the pouring port to form a...
Embodiment 2
[0045] Taking the production of a vacuum insulation ceramic cylinder as an example, the production process includes the following steps:
[0046] (1) Prefabrication of vacuum sandwich ceramic cylinder:
[0047] The ceramic mud is prepared according to the conventional ceramic production process, wherein the components of the mud are: clay 35%, feldspar 12%, quartz 8%, and bone ashes 45%.
[0048] The semi-finished product of vacuum sandwich ceramic cylinder is made by conventional grouting method:
[0049] a. The inner and outer blanks are drawn and formed: the inner and outer blanks are respectively prepared by the traditional method of drawing ceramics. The inner and outer blanks can be matched with each other, and after the combination, a ceramic cylinder blank with an interlayer is formed. ;
[0050] b. Blanketing: take the prepared inner blank and outer blank for blanking, and obtain the rough blank of the sandwich ceramic cylinder after blanking;
[0051] c. Billet tr...
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Abstract
The invention relates to a process for producing heat-preserving ceramic through vacuum sintering. The process comprises the following steps: (1) prefabrication of interlayer ceramic, namely preparing the semi-finished product of the interlayer ceramic from paste by a slip casting method, wherein a vacuumizing hole is reserved on the outer layer of the interlayer ceramic; (2) preparation of a sealing ball, namely kneading paste into a spherical shape, drying at high temperature, glazing and drying; and (3) vacuum sintering and sealing, namely putting the interlayer ceramic into a vacuum sintering surface, putting the sealing ball on the vacuumizing hole of the interlayer ceramic, and sintering and sealing under the vacuum condition to prepare the heat-preserving interlayer ceramic finished product. The firing and sealing processes are finished under the vacuum condition, so that the prepared vacuum interlayer heat-preserving ceramic has better heat-preserving effect by compared with that of the common interlayer heat-preserving ceramic.
Description
technical field [0001] The invention relates to the field of ceramic manufacturing, in particular to a production process of vacuum sinteringthermal insulation ceramics. Background technique [0002] At present, the thermal insulation ceramic utensils on the market are basically sandwich ceramics, which have a certain thermal insulation effect, but the production process cannot achieve the best thermal insulation effect. The main reasons are as follows: 1. The existing interlayer thermal insulation ceramics achieve thermal insulation through double-layer ceramics whose interlayer is connected to the atmosphere, and does not realize the vacuum thermal insulation technology in the true sense. That is to say, it is only consciously designed as an interlayer in the production process, and the air in the interlayer is not completely removed. Since there is air in the interlayer and is connected to the atmosphere, the thermal insulation effect cannot reach the true vacuum thermal...
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