Atmosphere vertical tube furnace

Atmosphere vertical tube furnace is a heating equipment widely used in materials research, chemical engineering, electronics and other fields. It can heat and treat samples in a specific atmosphere environment to meet the needs of different experiments and production processes. Let’s take a detailed look at the atmosphere vertical tube furnace below!

Experimental mini fluidized bed vertical tube furnace (click on the picture to view product details)

Structural characteristics
Furnace body: It is usually made of high-quality high-temperature resistant materials with good insulation performance to reduce heat loss. The outer shell is generally made of metal material and has undergone anti-corrosion treatment. The interior is filled with insulation materials such as ceramic fibers, which not only ensures the strength of the furnace body but also effectively reduces energy consumption.
Heating system: Generally, resistance wires, silicon carbon rods, or silicon molybdenum rods are used as heating elements, which are evenly distributed around the furnace tube and can provide a uniform heating field. Through a precise temperature control system, precise control of the temperature inside the furnace can be achieved, with temperature control accuracy typically reaching ± 1 ℃ or even higher.
Furnace tube: It is the place where samples are placed, usually made of high-purity quartz tube, corundum tube, stainless steel tube and other materials. These pipes have good high temperature resistance and corrosion resistance, and can withstand high temperature environments under different atmospheres, ensuring that the samples are not contaminated during the heating process.
Atmosphere control system: This is a key component of the atmosphere vertical tube furnace, including gas supply system, gas flow control system, and exhaust gas treatment system. The gas supply system can provide a variety of different gases, such as nitrogen, argon, hydrogen, oxygen, etc., to meet the requirements of different experiments and processes for the atmosphere. The gas flow control system precisely controls the flow of various gases through equipment such as mass flow meters, thereby achieving precise adjustment of the atmosphere composition inside the furnace. The exhaust gas treatment system is responsible for treating the discharged gas to protect the environment and the safety of operators.

Working principle
The working principle of an atmosphere vertical tube furnace is to raise the temperature of the sample inside the furnace tube to the desired level through a heating system, and at the same time, to create the desired atmosphere environment by introducing specific gases into the furnace through an atmosphere control system. Under the combined action of heating and atmosphere, the sample undergoes corresponding physical or chemical changes. For example, in the heat treatment process of metal materials, introducing a protective atmosphere can prevent metal oxidation; In certain chemical reactions, the introduction of specific reaction gases can promote the progress of the reaction.

Application area
Materials research: In the field of materials science, atmosphere vertical tube furnaces are commonly used to study the performance changes of materials under different atmosphere and temperature conditions. For example, studying the antioxidant properties of metal materials in reducing atmospheres, the sintering behavior of ceramic materials in specific atmospheres, and the doping effects of semiconductor materials in different atmospheres. By precisely controlling the atmosphere and temperature, we can gain a deeper understanding of the relationship between the microstructure and properties of materials, providing important experimental evidence for the development and performance optimization of new materials.
Chemical production: In the chemical industry, atmospheric vertical tube furnaces can be used for research and production of various chemical reactions. For example, catalytic reactions, cracking reactions, reforming reactions, etc. By controlling the reaction atmosphere and temperature, the selectivity and conversion rate of the reaction can be improved, the reaction process conditions can be optimized, and technical support can be provided for the production of chemical products.
Electronics industry: In the electronics industry, atmosphere vertical tube furnaces are commonly used for the preparation of semiconductor materials and heat treatment of electronic components. For example, processes such as oxidation, diffusion, and annealing of silicon wafers require specific atmosphere and temperature conditions. By precisely controlling the atmosphere and temperature, the performance and reliability of semiconductor devices can be improved, meeting the requirements of the electronics industry for high-precision material preparation and processing.

Precautions for operation
Gas safety: When using an atmosphere vertical tube furnace, attention should be paid to the safety of the gas. For flammable and explosive gases such as hydrogen, it is necessary to ensure the sealing of the system to prevent gas leakage from causing safety accidents. At the same time, corresponding gas detection and alarm devices should be equipped to promptly detect and handle gas leakage issues.
Temperature control: Accurate temperature control is the key to ensuring the quality of experiments and production. During the operation, it is necessary to strictly follow the operating procedures to set and adjust temperature parameters, in order to avoid adverse effects on the sample caused by excessively high or low temperatures. At the same time, it is necessary to regularly calibrate and maintain the temperature control system to ensure its accuracy and reliability.
Atmosphere regulation: Accurately adjust the composition and flow rate of the atmosphere according to experimental and process requirements. When introducing multiple gases, attention should be paid to the interactions and reactions between the gases to avoid unnecessary side reactions or contamination of the sample. At the same time, it is necessary to regularly check the working status of the gas flow control system to ensure the stability and accuracy of the gas flow.
Sample processing: Before placing the sample into the furnace tube, appropriate processing and preparation should be carried out to ensure that the size, shape, and placement of the sample meet the experimental requirements. At the same time, attention should be paid to the contact between the sample and the furnace tube to avoid adhesion or reaction between the sample and the furnace tube, which may affect the experimental results and the service life of the furnace tube.

Three commonly used fluidized bed vertical tube furnaces with three temperature zones (click on the image to view product details)

Before choosing an atmosphere vertical tube furnace, it is recommended to communicate with relevant technical personnel and analyze the parameters in detail in order to select the appropriate atmosphere vertical tube furnace for your needs!Click to learn more tube furnaces! Or click on online customer service to learn more about product information!