Low-temperature sintering method for enhancing strength of ceramic green body

A ceramic green body and low-temperature sintering technology, which is applied in the field of ceramic processing, can solve the problems of high sintering temperature, long sintering time, and large energy consumption, so as to reduce the sintering temperature, reduce the sintering temperature and sintering time, and prolong the service life Effect

Inactive Publication Date: 2019-10-18
阜阳创启工艺品有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing patent document CN109232001A discloses a firing method for improving the strength of the ceramic tableware body. After placing the ceramic green body in the kiln, it undergoes primary firing, spray treatment, secondary firing, tertiary firing, and cooling. The first step is to sinter the green body, and the obtained green body has higher strength, but the sintering temperature is higher and the sintering time is longer, which consumes a lot of energy and has certain damage to the environment

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  • Low-temperature sintering method for enhancing strength of ceramic green body

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Embodiment 1

[0021] A low-temperature sintering method for enhancing the strength of a ceramic green body, comprising the following steps:

[0022] (1) Primary drying: After the green body is prepared, carry out microwave drying, the frequency is 760MHz, the power is 0.04kW, heating for 5s, stopping for 60s, drying until the water content is 35~40%, and evenly and slowly removing part of the moisture in the green body , reduce the gas and voids in the ceramic green body, make the particles in the green body closer, reduce the sintering temperature of the green body, and obtain a dry green body;

[0023] (2) Spraying: Spray the surface care agent evenly on the surface of the primary dry green body, and the amount of each spraying of the surface care agent is 0.5ml / dm 2 , consists of the following raw materials in parts by weight: sodium selenite 14, nano silicon dioxide 7, nano silver 6, borax 2, water 400, continuous spraying 2 times, the interval between two times is 3h, the surface care ...

Embodiment 2

[0030] A low-temperature sintering method for enhancing the strength of a ceramic green body, comprising the following steps:

[0031] (1) Primary drying: After the green body is prepared, carry out microwave drying, the frequency is 780MHz, the power is 0.05kW, heating for 6s, stopping for 65s, drying until the water content is 35~40%, and evenly and slowly removing part of the moisture in the green body , reduce the gas and voids in the ceramic green body, make the particles in the green body closer, reduce the sintering temperature of the green body, and obtain a dry green body;

[0032] (2) Spraying: Spray the surface care agent evenly on the surface of the primary dry green body, the amount of each spraying of the surface care agent is 0.6ml / dm 2 , consists of the following raw materials in parts by weight: sodium selenite 15, nano-silica 8, nano-silver 7, borax 2.5, water 450, continuous spraying 2 times, the interval between two times is 3.5h, the surface care agent con...

Embodiment 3

[0039] A low-temperature sintering method for enhancing the strength of a ceramic green body, comprising the following steps:

[0040] (1) Primary drying: Microwave drying is carried out after the green body is prepared, the frequency is 800MHz, the power is 0.06kW, heating for 7s, stopping for 70s, drying until the water content is 35~40%, and evenly and slowly removing part of the moisture in the green body , reduce the gas and voids in the ceramic green body, make the particles in the green body closer, reduce the sintering temperature of the green body, and obtain a dry green body;

[0041] (2) Spraying: Spray the surface care agent evenly on the surface of the primary dry green body. The amount of each spraying of the surface care agent is 0.7ml / dm 2 , consists of the following raw materials in parts by weight: sodium selenite 16, nano-silica 9, nano-silver 8, borax 3, water 500, continuous spraying 2 times, the interval between two times is 4h, the surface care agent is ...

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Abstract

The invention mainly relates to the technical field of ceramic processing, and discloses a low-temperature sintering method for enhancing the strength of a ceramic green body. The low-temperature sintering method comprises the steps of primary drying, spraying, secondary drying, primary sintering, secondary sintering and post-treatment; according to the low-temperature sintering method for enhancing the strength of the ceramic green body, a sintering temperature is low, the strength and wear resistance of the ceramic green body can be significantly improved, the surface is smooth, the practicability of ceramic is improved, and the service life of the ceramic is prolonged; firstly, a ceramic green is subjected to intermittent microwave drying, part of moisture in the green is uniformly andslowly removed, gas and voids in the ceramic green are reduced to enable particles in the green to be closer, and the sintering temperature of the green is reduced; and a surface care agent is uniformly sprayed on the surface of the green twice continuously after primary drying, the surface care agent is prepared from a variety of nano materials, and can form a uniform protective layer on the surface of the green, so that cracks of the green in the subsequent processing process are avoided, and the strength and wear resistance of the ceramic are improved.

Description

technical field [0001] The invention mainly relates to the technical field of ceramic processing, in particular to a low-temperature sintering method for enhancing the strength of a ceramic green body. Background technique [0002] With the gradual improvement of people's living standards and the change of aesthetic views, people are more and more fond of ceramic products, and the scope of use of ceramic products in daily life is also becoming wider and wider, such as tableware, floors, wall tiles, sanitary ware, etc., can be seen everywhere The use of ceramic products, ceramic products have high strength, but cracks or defects will appear after being subjected to sudden high temperature, low temperature, impact or bump, which will obviously affect the appearance and service life of ceramic products, and reduce the practicability of ceramic products. [0003] The preparation process of ceramic products includes the process of blank preparation, molding, drying, sintering, gl...

Claims

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Application Information

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IPC IPC(8): C04B35/64C04B41/85B28B11/24
CPCB28B11/243C04B35/64C04B41/5116C04B41/85C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/661C04B41/5035C04B41/5006C04B41/5007C04B41/4578C04B41/4535
Inventor 余国海
Owner 阜阳创启工艺品有限公司
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