What is a tube sintering furnace?

A tube sintering furnace is a specialized equipment used for small-scale experimental sintering and the sintering and extraction of small amounts of materials. It is widely used in various fields such as ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractory materials, new material development, special materials, building materials, universities, research institutes, industrial and mining enterprises, etc. It is mainly used for powder roasting, ceramic sintering, high-temperature experiments, material processing, quality testing, etc. The following is a detailed analysis of the tube sintering furnace:
1. Structure and Characteristics
Furnace tube: The core component of a tube sintering furnace is the furnace tube, which is usually made of 310S stainless steel tube, quartz tube, corundum tube, etc., to meet different sintering needs. There are various sizes of furnace tubes, such as 40, 60, 80, 100, 120, 150, 200mm, etc., which can be selected according to specific needs.
Heating zone: The length of the heating zone is also diverse, such as 100, 200, 300, 400, 500mm, etc., and can be customized according to customer requirements. The heating zone adopts PID automatic control to ensure the accuracy and stability of temperature control.
Insulation and installation: Ceramic fibers are commonly used as insulation materials for furnace tubes, which have good insulation effects and keep the surface temperature of the furnace body at a low level. The installation method of furnace tubes is usually top and bottom installation, which is convenient for operation and maintenance.
2. Working principle
The working principle of a tube type sintering furnace is to generate high-temperature gas by burning fuel in the combustion chamber. These high-temperature gases are conducted into the furnace tube through pipelines, heating and sintering the materials placed inside the furnace tube. Due to the long and slender design of the tube furnace, the gas flows in the pipeline for a longer period of time, allowing heat to be fully conducted to the surface of the material and improving heating efficiency.
3. Operation process
Clean the furnace tube and place the materials: After cleaning the inside of the furnace tube, use high-temperature resistant tools or containers (such as crucible boats or pads) to place the materials into the furnace tube.
Sealed furnace tube: Use insulation plugs to block the furnace tube and cover the furnace tube flange to ensure confidentiality.
Programming and Heating: Press the power button and program the desired sintering temperature and program. After checking for accuracy, press the heating button to start heating.
Cooling and material retrieval: After sintering is completed, let the electric furnace cool naturally to a safe temperature (such as below 500 ℃), then turn off the power and remove the sintered material.
4. Application Fields
Tube sintering furnaces have a wide range of applications in various fields. In the ceramic industry, it is used for sintering ceramics and processing glazes; In the metallurgical industry, it is used for sintering metal powders and preparing alloys; In the electronics industry, it is used for sintering and packaging of electronic components; In the glass industry, it is used for annealing and heat treatment of glass. In addition, tube sintering furnaces are widely used in the development of new materials, preparation of special materials, production of building materials, and experimental research in universities and research institutes.
In summary, the tube sintering furnace is an efficient, flexible, and multifunctional sintering equipment that plays an important role in multiple fields.