Experimental vacuum tube furnace is a commonly used heating equipment in laboratories, mainly used for heating samples in a vacuum or specific atmosphere environment. Let's take a detailed look at the information of experimental vacuum tube furnace below!

Customized large diameter experimental vacuum tube furnace (click on the picture to view product details)

Structural composition of experimental vacuum tube furnace
Furnace body: It usually adopts a double-layer shell structure, with insulation materials such as ceramic fibers filled in the middle to reduce heat loss and lower the temperature of the shell. The material of the furnace body is generally cold-rolled steel plate or stainless steel, and the outer surface has been treated to have the characteristics of beauty and corrosion resistance.
Heating elements: Common ones include resistance wires, silicon carbide rods, silicon molybdenum rods, etc. These heating elements are distributed around the furnace and generate heat through current, providing the required heating environment for the samples inside the furnace.
Furnace tube: Materials such as quartz tube, corundum tube, or stainless steel tube are commonly used. Among them, quartz tubes have high transparency and good chemical stability, making them suitable for most experiments; Corundum tubes have strong resistance to high temperatures and wear, and can be used under harsh experimental conditions such as high temperatures and corrosive atmospheres; Stainless steel pipes have good mechanical strength and corrosion resistance, and are commonly used in experiments that require them to withstand certain pressures.
Vacuum system: composed of vacuum pump, vacuum valve, vacuum gauge, etc., used to extract air from the furnace tube and create a vacuum environment. The pumping speed and ultimate vacuum degree of a vacuum pump are important indicators for measuring the performance of a vacuum system. Common vacuum pumps include rotary vane vacuum pumps, turbo molecular pumps, diffusion pumps, etc. Suitable vacuum pumps can be selected according to experimental needs.
Temperature control system: generally composed of temperature controller, thermocouple, etc. The temperature controller adopts PID control algorithm, which can accurately set and control the temperature inside the furnace, and the temperature control accuracy can usually reach ± 1 ℃. Thermocouples serve as temperature sensors, converting temperature signals inside the furnace into electrical signals and feeding them back to the temperature controller to achieve closed-loop temperature control.
Atmosphere control system: including gas inlet pipeline, gas flow controller, etc. By using a gas flow controller, the type and flow rate of gas introduced into the furnace tube can be accurately controlled to meet the requirements of different experimental atmospheres, such as introducing inert gases such as nitrogen and argon as protective atmospheres, or introducing reducing gases such as hydrogen and carbon monoxide for reduction reactions.

Working principle of experimental vacuum tube furnace
The working principle of an experimental vacuum tube furnace is to use heating elements to generate heat, and to raise the temperature of the sample inside the furnace tube through radiation, conduction, and convection. During the heating process, the air inside the furnace tube is extracted through a vacuum system to create a vacuum environment, or specific gases are introduced through an atmosphere control system to create the desired atmosphere conditions. The temperature control system monitors and controls the temperature inside the furnace in real time, ensuring the accuracy and stability of the temperature to meet the requirements of the experiment for temperature and atmosphere.

Characteristics of experimental vacuum tube furnace
Vacuum environment: It can be heated in a vacuum environment, avoiding contact between the sample and oxygen, moisture, etc. in the air, reducing pollution and oxidation reactions during the experimental process, especially suitable for the research of oxygen sensitive materials.
Precise temperature control: Equipped with a high-precision temperature control system, it can achieve precise temperature control with high precision, meeting the strict temperature requirements of various experiments, and can set different heating rates, insulation times, and cooling methods to adapt to the processing technology of different materials.
Controllable atmosphere: Various gases can be introduced according to experimental needs, such as inert gases, reducing gases, oxidizing gases, etc., to accurately control the atmosphere inside the furnace, simulate different actual working environments, and provide diverse experimental conditions for material synthesis, modification, and other research.
Easy to operate: Usually using a touch screen or computer control system, the operating interface is simple and intuitive, making it convenient for experimenters to set parameters, start, stop, and other operations. It can also monitor the operating status information such as furnace temperature, vacuum degree, and gas flow in real time. Some equipment also supports remote monitoring and data recording functions, making it easy for experimenters to manage experiments and analyze data.
High safety: It has multiple safety protection functions, such as over temperature protection, leakage protection, short circuit protection, etc., to prevent equipment damage or safety accidents caused by overheating, leakage, and other reasons. In addition, some vacuum tube furnaces are equipped with a safety lock system that opens the door to cut off heating, ensuring the safety of operators.

Application fields of experimental vacuum tube furnace
Materials Science Research: Used for the synthesis, sintering, annealing, quenching, and other processes of materials, such as the preparation of nanomaterials, ceramic materials, metal matrix composites, etc. By controlling conditions such as vacuum degree, temperature, and atmosphere, the relationship between the microstructure and properties of materials is studied.
In the field of chemical engineering, it can be used for the preparation, evaluation, and regeneration of catalysts, as well as the study of chemical reaction kinetics. Chemical reactions can be carried out under vacuum or specific atmosphere to improve the selectivity and conversion rate of the reaction, providing experimental basis for the optimization of chemical processes.
In the field of energy science, it plays an important role in the research and development of new energy materials, such as the preparation and performance testing of lithium-ion battery electrode materials, solar cell materials, fuel cell materials, etc. Through vacuum tube furnace treatment, the crystal structure and electrochemical properties of materials can be improved, and the performance and stability of energy materials can be enhanced.
In the field of electronics industry, it is used for epitaxial growth, oxidation, diffusion and other processes of semiconductor materials, as well as heat treatment of electronic components, such as annealing and tempering in chip manufacturing processes, which helps to improve the performance and reliability of semiconductor devices.

Rotating tilting experimental vacuum tube furnace (click on the picture to view product details)

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