Ultra-low-expansion ceramic pot and manufacturing method thereof

A ceramic, ultra-low technology, applied in the field of ceramics, can solve the problems of difficult promotion and application, large thermal expansion coefficient, high water absorption rate of the carcass, etc., achieve long service life, simple manufacturing process, and improve the effect of thermal shock resistance

Active Publication Date: 2012-06-27
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to adapt to the cooking environment and requirements of the wok, the wok made of ceramic material in the prior art is usually made of ordinary low-expansion ceramic material, which can withstand heat exchange at 650°C to 20°C wi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1:

[0017] The ultra-low expansion ceramic cookware of this embodiment includes a ceramic body and a glaze applied to the surface.

[0018] The main materials of the ceramic green body are: 48% of hectorite, 10% of spodumene, 35% of kaolin, 5% of quartz, and 2% of calcined talc. In addition, the green body is added with a crystallizing agent Ta 2 O 5 , and its dosage is 0.2% of the total amount of the above-mentioned green body main materials by weight percentage.

[0019] The glaze contains 55% of hectorite, 20% of spodumene, 6% of kaolin, 8% of quartz, 2% of calcined talc, 6% of barium carbonate and 3% of zinc oxide by weight percentage. In addition, zirconium silicate or ceramic pigment is added, and the amount thereof is 4% by weight of the total amount of the above-mentioned glaze materials.

[0020] The manufacturing method of the ultra-low expansion ceramic cookware of the present embodiment is as follows:

[0021] (1) Mix the components of the abov...

Example Embodiment

[0025] Embodiment 2:

[0026] The ultra-low expansion ceramic cookware of this embodiment includes a ceramic body and a glaze applied to the surface.

[0027] The main materials of the ceramic body are: 10% of hectorite, 48% of spodumene, 35% of kaolin, 5% of quartz, and 2% of calcined talc by weight percentage. In addition, the green body is added with the crystallizing agent GeO 2 , and the amount by weight is 0.4% of the total amount of the above-mentioned green body main materials.

[0028] The glaze contains 53% of hectorite, 20% of spodumene, 9% of kaolin, 5% of quartz, 2% of calcined talc, 6% of barium carbonate and 5% of zinc oxide by weight percentage. In addition, zirconium silicate or ceramic colorant is added, and the amount thereof is 6% of the total amount of the above-mentioned glaze materials by weight percentage.

[0029] The manufacturing method of the ultra-low expansion ceramic cookware of the present embodiment is as follows:

[0030] (1) Mix the compo...

Example Embodiment

[0034] Embodiment three:

[0035] The ultra-low expansion ceramic cookware of this embodiment includes a ceramic body and a glaze applied to the surface.

[0036] The main materials of the ceramic green body are: 50% of hectorite, 10% of spodumene, 35% of kaolin, 3% of quartz, and 2% of calcined talc in percentage by weight. In addition, the green body is added with a crystallizing agent Nb 2 O 5 , the amount of which is 0.6% of the total amount of the above-mentioned green body main materials by weight percentage.

[0037] The glaze contains 20% of hectorite, 55% of spodumene, 8% of kaolin, 5% of quartz, 2% of calcined talc, 6% of barium carbonate and 4% of zinc oxide by weight percentage. In addition, zirconium silicate or ceramic colorant is added, and the amount thereof is 7% of the total amount of the above-mentioned glaze materials by weight.

[0038] The manufacturing method of the ultra-low expansion ceramic cookware of the present embodiment is as follows:

[003...

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Abstract

The invention discloses an ultra-low-expansion ceramic pot. The ultra-low-expansion ceramic pot comprises a ceramic pot blank and a glaze coated on the surface of the ultra-low-expansion ceramic pot. The ceramic pot blank comprises main materials and one or more nucleation agents. The main materials comprise: by weight, 10 to 50% of petalite, 10 to 50% of spodumene, 25 to 40% of kaolin, 2 to 15% of quartz and 2 to 5% of calcined talcum. Preferably, the main materials comprise: by weight, 40 to 50% of petalite, 10 to 20% of spodumene, 30 to 35% of kaolin, 2 to 6% of quartz and 2 to 5% of calcined talcum. The weight of the one or more nucleation agents is 0.2 to 0.8% of that of the main materials. The invention also discloses a manufacturing method of the ultra-low-expansion ceramic pot. The ultra-low-expansion ceramic pot has excellent quick-cooling and quick-heating resistance and ultra-low thermal expansion coefficients. The manufacturing method provided by the invention obviously improves product use performances and stability, has simple processes and good repeatability, is suitable for industrial production and is conducive to promotion of ceramic cooker application and development.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a ceramic pot for cooking. Background technique [0002] Pots are the most commonly used cooking utensils in cooking, and the use of frying pans is more general. Because the frying pan is used under high temperature and rapid cooling and rapid heating, the material of the frying pan is generally all iron so far. However, the iron frying pan has poor heat preservation performance, and the cooking taste is not delicious; and it is easy to rust, and long-term use will cause harm to the human liver. For this reason, the prior art also has some organic coatings sprayed on the surface of the pot to prevent rust, but the use effect is not good, and it will inevitably cause secondary pollution. [0003] For addressing the above problem, prior art has also developed the wok of ceramic material. Ceramic pots have good heat preservation performance, delicious cooking, and are environmen...

Claims

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Application Information

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IPC IPC(8): C04B35/16C04B35/622
Inventor 周健儿包启富黄武清
Owner JINGDEZHEN CERAMIC INSTITUTE
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