Flash sintering forming preparing method of ceramic crystal

A flash burning and crystal technology, applied in the field of flash burning molding preparation of ceramic crystals, can solve problems such as large energy consumption and environmental problems, and achieve the effects of simplifying production process, improving stability and flash burning efficiency

Inactive Publication Date: 2019-06-28
浙江晨华科技有限公司
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  • Abstract
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Problems solved by technology

In the traditional high-temperature sintering process, it needs to consume a lot of energy, which may cause serious environmental problems

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] The embodiment of the preparation method of flash-fired molding of ceramic crystals of the present invention will be further described.

[0022] A preparation method for flash firing molding of ceramic crystals, comprising the following steps:

[0023] S1 Pour the raw material into the bone-shaped mold and press it into a bone-shaped material, and smooth the surface;

[0024] S2 Put the mold into the sintering area of ​​the flash firing equipment, apply a pressure of 40-50MPa with the pressure heads at the upper and lower ends, and keep the bone-like material in the middle of the heating area, and connect the mold to the circuit of the high-voltage DC flash firing power supply.

[0025] S3 Turn on the auxiliary heating power supply, heat at a speed of 160°C / min-200°C / min to 1000°C~1200°C or until flashing occurs;

[0026] S4 Turn on the high-voltage DC flash-burning power supply, and connect DC to both sides of the mold, and increase the voltage linearly by 200V / cm unt...

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Abstract

The invention relates to a flash sintering forming preparing method of a ceramic crystal. A raw blank does not need to be prepared through dry pressing, cold pressing or casting in advance, therefore,the production process is greatly simplified, a mold is leveled so that the product shape and size can be more accurately controlled, and thus an industrial application basis is laid for the flash sintering technology. Many auxiliary heating modes are provided, materials can be quickly and accurately heated to a critical temperature for flash sintering, after the critical temperature is reached,the stable temperature is maintained for a certain period of time, and the stability and sintering efficiency of the sintering process are improved.

Description

technical field [0001] The invention belongs to the field of high-crystalline materials, and in particular relates to a method for preparing ceramic crystals by flash firing. Background technique [0002] Ceramic material is an important industrial material. Different ceramics have different mechanical, electrical, optical, acoustic, magnetic and other properties, so they have a variety of applications and become an indispensable important material in modern society. The preparation process of ceramic materials is various, generally using the forming-sintering-machining process. Sintering is the most important process in the preparation process of ceramic materials, and it is an important link in the performance of materials. In the traditional high-temperature sintering process, it needs to consume a lot of energy, which may cause serious environmental problems. In order to save energy and protect the environment, many new sintering technologies have been developed, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/64
Inventor 孙矿徐炜
Owner 浙江晨华科技有限公司
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