High-strength corundum ceramics and preparation method thereof

A high-strength, corundum technology, applied in the field of high-strength corundum ceramics and its preparation, can solve the problems of poor thermal stability, poor strength, and difficult to meet, and achieve good thermal stability and good mechanical strength.

Inactive Publication Date: 2010-05-05
江门市凌志餐厨用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of ceramic has poor strength and poor thermal stab

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Ball mill 20 parts of alumina, 14 parts of quartz, 0.5 parts of talc and 27 parts of feldspar for 8 hours, then add 26 parts of kaolin, 12 parts of porcelain stone, 0.125 parts of CMC and 0.375 parts of bentonite, mix and ball mill for 4 hours, 250 mesh sieve Residual <0.1%, sieve, add water and mix to obtain green mud;

[0021] 2) Remove iron from the base mud, press filter to obtain a mud cake, and use a mud trainer to rough the mud cake to obtain a rough mud section;

[0022] 3) Keep the rough mud section aged for 10 days, and then refine the mud section twice;

[0023] 4) Put the refined mud into the mold, keep the speed ratio of the roller head and the main shaft at 2.0, and roll to produce the green body;

[0024] 5) Drying, trimming, cleaning, glazing, and sintering at 1300° C. for 16 hours to obtain a finished product.

Embodiment 2

[0026] 1) Ball mill 21 parts of alumina, 12 parts of quartz, 1 part of talc and 29 parts of feldspar for 9 hours, then add 25 parts of kaolin, 14 parts of porcelain stone, 0.25 parts of CMC and 0.75 parts of bentonite, mix and ball mill for 4 hours, 250 mesh sieve Residual <0.1%, sieve, add water and mix to obtain green mud;

[0027] 2) Remove iron from the base mud, press filter to obtain a mud cake, and use a mud trainer to rough the mud cake to obtain a rough mud section;

[0028] 3) Keep the rough mud section aged for 12 days, and then refine the mud section twice;

[0029] 4) Put the refined mud into the mold, keep the speed ratio of the roller head and the main shaft at 2.5, and press to produce the green body;

[0030] 5) Drying, trimming, cleaning, glazing, and sintering at 1280° C. for 18 hours to obtain a finished product.

Embodiment 3

[0032] 1) Ball mill 22 parts of alumina, 13.5 parts of quartz, 0.5 parts of talc and 28 parts of feldspar for 10 hours, then add 28 parts of kaolin, 13 parts of china stone, 0.375 parts of CMC and 1.125 parts of bentonite and mix ball mill for 4 hours, sieve 250 mesh Residual <0.1%, sieve, add water and mix to obtain green mud;

[0033] 2) Remove iron from the base mud, press filter to obtain a mud cake, and use a mud trainer to rough the mud cake to obtain a rough mud section;

[0034] 3) Keep the rough mud section aged for 15 days, and then refine the mud section twice;

[0035] 4) Put the refined mud into the mold, keep the speed ratio of the roller head and the main shaft at 3, and press to produce the green body;

[0036] 5) The green body is dried, trimmed, cleaned, glazed, and sintered at 1315° C. for 17 hours to obtain a finished product.

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PUM

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Abstract

The invention discloses a high-strength corundum ceramics and a preparation method thereof. A ceramic blank comprises the following components: 18-22 parts of aluminum oxide, 12-15 parts of quartz, 0.5-1.0 part of talc, 27-30 parts of feldspar, 25-29 parts of kaolin, 10-14 parts of chinastone and 0.5-1.5 parts of blank body plasticizing agent. In sintered porcelain, the aluminum oxide content is higher than 30 percent. The method comprises the following steps: ball-milling and pulverizing a blank; adding water and mixing to obtain blank slurry; deironing and press-filtering the blank slurry into a mud cake and roughly smelting the mud cake; mildewing the roughly smelted mud cake and refining the mildewed mud cake; rolling and moulding the refined mud in a die to obtain a blank body; drying, washing and glazing the blank body and sintering at 1,280-1,320 DEG C for 15-18 hours to obtain a finished product. The product has favorable mechanical strength, and the impact resistant capability of the product is more than four times that of common ceramics; and the product has favorable thermostability, no crack after thermal shock at 200 DEG C/20 DEG C three times, the water absorption rate of lower than 0.1 percent, is more dense, firm and durable and is particularly suitable for an oven, a microwave oven and a dish-washing machine.

Description

technical field [0001] The invention relates to a daily-use ceramic and a preparation method thereof, in particular to a high-strength corundum ceramic and a preparation method thereof. Background technique [0002] Traditional daily-use ceramics are generally made of kaolin, supplemented by porcelain stones, etc. The formula of this kind of ceramics has basically remained unchanged for many years. This kind of ceramic has poor strength and poor thermal stability, which makes it difficult to meet the needs of modern life. People have been hoping to obtain a daily-use ceramic with good performance, which is more suitable for use in ovens, microwave ovens and dishwashers. Contents of the invention [0003] Therefore, the present invention provides a high-strength corundum ceramic and a preparation method thereof. [0004] The technical scheme that the present invention takes is: [0005] The high-strength corundum ceramic is characterized in that: the raw materials for pr...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622
Inventor 林桁峰
Owner 江门市凌志餐厨用品有限公司
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