Process for heating foam ceramic

A technology of foam ceramics and heating method, which is applied in the field of heating of foam ceramics, which can solve the problems of large temperature difference between the inside and outside of the foam ceramic body, uneven heat radiation, and poor sintering quality, and achieve shortened firing time, simple process, and high sintering quality. Improved effect

Inactive Publication Date: 2006-06-28
长沙隆泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional heating of foamed ceramics is to heat the ceramic body through heat radiation and air convection, but due to the uneven heat radiation and the small air convection between the pores in the foamed ceramic body, resulting in the heating process inside and outside the foamed ceramic body Large temperature difference leads to poor sintering quality
[0003] Microwave heating, as a high-efficiency heating method, has the advantages of wide application range, high energy utilization rate, no pollution, and simultaneous heating inside and outside. would be a good idea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1, the ceramic foam body is put into an industrial batch microwave bell jar furnace. The ceramic foam body is made of oxide porous material, and the porosity of the body is 35%. The microwave frequency is 915MHz, so that the ceramic body is heated to 1520°C within 120 minutes and kept for 20 minutes. After turning off the microwave source, let it cool down to room temperature with the furnace. When heating, the atmosphere is an oxidizing atmosphere, and the pressure in the furnace is 1.0×10 5 Pa. Measure the temperature with an infrared thermometer. After being released from the furnace, after inspection, the heated sample is qualified if it meets the design requirements, and the appearance is superior, and the sintering temperature is 130°C lower than the traditional sintering temperature.

Embodiment 2

[0011] Example 2, the ceramic foam body is placed in an industrial continuous microwave sintering furnace. The ceramic foam body is made of a composite porous material composed of two compounds of nitride and carbide, and the porosity of the body is 95%. The microwave frequency is 2.45 GHz, the temperature is raised to 1250° C. within 90 minutes, and the temperature is kept for 20 minutes. The rest of the steps are the same as in Example 1. The heated sample is qualified and has a high-quality appearance, and the heating temperature is 100°C lower than that of traditional heating.

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PUM

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Abstract

The invention relates to a heating method for bubble ceramic. According to the method, the bubble ceramic blank is set into the microwave heating device to take heating, under the condition of 300MHz-300GHz, 25-2000 degree centigrade heating time for 30-60 minutes, cooling. The method has simple technology, short producing cycle high production efficiency and high economic benefits.

Description

technical field [0001] The invention belongs to the field of engineering ceramic heating. In particular, it relates to a heating method for foam ceramics. Background technique [0002] Ceramic foam is a new type of ceramic filter material. The traditional heating of foamed ceramics is to heat the ceramic body through heat radiation and air convection, but due to the uneven heat radiation and the small air convection between the pores in the foamed ceramic body, resulting in the heating process inside and outside the foamed ceramic body The large temperature difference leads to the problem of poor sintering quality. [0003] Microwave heating, as a high-efficiency heating method, has the advantages of wide application range, high energy utilization rate, no pollution, and simultaneous heating inside and outside. Not a very good way. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a method for heating foamed ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/64C04B38/00
Inventor 彭虎曾小锋夏广斌
Owner 长沙隆泰科技有限公司
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