Microwave heating glass ceramic crystallization technology and device

A glass-ceramic and microwave heating technology, which is applied in the field of glass-ceramic crystallization, can solve the problems of temperature imbalance, low temperature, explosion of glass-ceramic products, etc., and achieve the effects of stress relief, simple process and quality improvement.

Active Publication Date: 2017-12-05
INNER MONGOLIA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the selectivity of microwave heating, its advantage is that the material heats up by itself (fast heating speed, energy saving, etc.), and the disadvantage is that the temperature of the surrounding environment is relatively low
Therefore, using microwave heating to crystallize glass-ceramic products will cause glass-ceramic products to burst during heating and crystallization due to temperature imbalance.

Method used

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  • Microwave heating glass ceramic crystallization technology and device
  • Microwave heating glass ceramic crystallization technology and device
  • Microwave heating glass ceramic crystallization technology and device

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The microwave heating glass-ceramic crystallization method of the present invention comprises heating up, crystallization, cooling and cooling process, utilizes microwave heating to carry out crystallization treatment to glass-ceramic material, and its difference with prior art is: in heating up, crystallization and cooling process At the same time, the microwave heating system and the electric auxiliary heating system are used to crystallize the glass ceramic products, and the temperature of each section of the furnace body is controlled by adjusting the output power of the microwave; Temperature balance solves the problem of cracking in the process of crystallization of glass ceramic products.

Embodiment 2

[0039] The microwave heating glass ceramic crystallization method of this embodiment is different from that of Embodiment 1 in that the specific control flow of each process is as follows: (1) During the heating process, the output power of the microwave heating system is adjusted to be 10 to 30 of the maximum output power %, so that the temperature in the heating section rises to 400-600°C at a rate of 1-5°C per minute; adjust the output power of the electric auxiliary heating system so that the rate of temperature rise of the glass ceramic product to be crystallized is consistent with the heating section;

[0040] (2) After the heating process is completed, when the crystallized glass-ceramic products enter the crystallization process, adjust the microwave output power to 30-100% of the maximum output power, so that the temperature of the crystallization section is raised to 600 at a rate of 2-5 °C per minute. ~800°C; adjust the output power of the electric auxiliary heating ...

Embodiment 3

[0044] The microwave heating glass-ceramic crystallization method of the present embodiment, its difference with embodiment 1 or embodiment 2 is: each microwave source system of described microwave heating system comprises the microwave power source that is made up of filament transformer and high-voltage transformer and Magnetron, when the magnetron is initially working, the filament transformer provides energy to preheat the magnetron, delay for 30 to 50 seconds, and then apply high voltage to the anode after the filament emits electrons stably, turn on the high voltage transformer and make the magnetron The tube emits microwaves for 60 to 90 seconds. When the magnetron works stably, turn off the filament transformer, use the heat generated during the microwave emission process of the magnetron to maintain a certain temperature for the magnetron filament, continue to emit electrons, and use the anode resonant cavity The energy generated by the vibration is used to maintain th...

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Abstract

The invention relates to a glass ceramic crystallization technology. In heating, crystallization and cooling processes, microwave heating systems and electric auxiliary heating systems carry out crystallization treatment on a glass ceramic product, temperatures of sections of a furnace are controlled through adjusting output power of the microwave heating system, and the balance of the product temperature and the temperature of a corresponding section of the furnace is realized through adjusting output power of the electric auxiliary heating system so that cracking of the glass ceramic product in crystallization is avoided. The main furnace body of a microwave heating glass ceramic crystallization device is orderly provided with a heating section, a crystallization section, a temperature reduction section and a cooling section from front to back. The sections are seal-connected. The tops of the heating section, the crystallization section and the temperature reduction section of the main furnace body are provided with microwave emission systems. The bottoms of the heating section, the crystallization section and the temperature reduction section are provided with the electric auxiliary heating systems. Temperature detection sensors are arranged in the sections of the main furnace body. An output signal is connected to a control system. The control system respectively controls and is connected to the microwave emission systems, the electric auxiliary heating systems and auxiliary systems.

Description

technical field [0001] The invention relates to a glass ceramic crystallization technology, in particular to a method and device for crystallizing glass ceramic products by microwave heating. Background technique [0002] With the development of the national economy, the industrial production of glass ceramics has also been greatly developed. However, there are still many problems in the research and development of industrial equipment and industrial production technology, especially the development of glass ceramic crystallization technology and equipment is the difficulty and focus of the development of glass ceramic industry. [0003] Compared with the huge application prospect of glass ceramics, the industrial production of glass ceramics in my country has just started. The fundamental reason is that most of the current research in our country focuses on laboratory research, and less energy is invested in long-term and large-scale industrial experiments and trial pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03B32/02
CPCC03B32/02C03C10/00Y02P40/57
Inventor 张雪峰刘新保李超贾晓林邓磊波刘芳马强张泉
Owner INNER MONGOLIA UNIV OF SCI & TECH
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