Can a vertical tube heat treatment electric furnace pass through the atmosphere?

The vertical tube type heat treatment electric furnace can pass through the atmosphere and has significant advantages in atmosphere control, which are reflected in the following aspects:

1. Implementation method of atmosphere control function
Vacuum and gas inlet system
The vertical furnace uses a vacuum pump to remove the air inside the furnace, creating a relative vacuum environment (with a vacuum degree of up to 10 ⁻ Pa). Then, protective or reactive gases such as nitrogen, argon, and hydrogen are introduced to precisely control the composition of the furnace atmosphere. For example, injecting hydrogen gas during metal sintering can prevent oxidation, and introducing argon gas during lithium battery material preparation can ensure material purity.
Optimization of gas path design
Adopting a quick connect flange structure simplifies gas path connections, eliminates complex flange installation processes, and reduces the risk of furnace tube damage. The gas path support device can eliminate the stress of the gas path assembly itself and prevent the furnace tube from cracking due to stress. Some models are equipped with micro adjustable inlet and outlet functions to meet the precise gas flow requirements of different processes.

2. Advantages of Atmosphere Control Technology
Dual temperature zone independent control
The high-end vertical furnace supports a dual temperature zone design, where each temperature zone can independently set temperature and atmosphere parameters. For example, in the preparation of semiconductor materials, hydrogen gas is introduced into the bottom temperature zone for reduction reaction, and nitrogen gas is introduced into the top temperature zone for protection, achieving synergistic treatment under different process conditions in the same furnace.
Intelligent monitoring and automatic adjustment
Real time monitoring of furnace temperature, atmosphere composition, and vacuum degree through high-precision sensors, combined with PID regulation, fuzzy control, and other algorithms to automatically adjust gas flow rate and heating power. For example, when the oxygen content exceeds the standard, the system automatically increases the nitrogen supply and reduces the heating temperature to ensure the stability of the experimental environment.

3. Typical application scenarios
Oxidation sensitive material treatment
In processes such as nanomaterials and ceramic sintering, the vacuum atmosphere function of vertical furnaces can prevent material oxidation at high temperatures. For example, when preparing carbon nanotubes, introducing argon gas protection can prevent carbon elements from reacting with oxygen at high temperatures to generate carbon dioxide, ensuring the purity of the product.
Phase transition and crystallization under specific atmosphere
In metal heat treatment, by controlling the mixing ratio of hydrogen and nitrogen, the strength of the reducing atmosphere in the furnace can be adjusted to achieve precise phase transition of metal materials. For example, when annealing titanium alloys, controlling the hydrogen concentration below 5% can avoid hydrogen embrittlement and promote grain refinement.
Preparation of new energy materials
In the preparation of lithium battery positive and negative electrode materials, the vacuum atmosphere function of the vertical furnace can optimize material properties. For example, by controlling the oxygen partial pressure inside the furnace, the lattice parameters of lithium iron phosphate materials can be adjusted to improve their electrochemical performance; In the preparation of silicon-based negative electrode materials, introducing argon gas can prevent silicon oxidation at high temperatures and improve material cycling stability.