What gases can be passed through a high-temperature vertical tube furnace?

The high-temperature vertical tube furnace can be filled with a wide range of gases, including inert, reducing, oxidizing, and special mixed gases. Let’s take a detailed look below!

Customized continuous feeding and discharging vertical tubular electric furnace (click on the picture to view product details)

1. Inert gas
Nitrogen (N ₂)
Function: As a protective gas, it prevents materials from oxidizing at high temperatures and is commonly used in processes such as metal annealing and ceramic sintering.
Application scenarios: Electronic component packaging, powder metallurgy sintering, and other scenarios that require oxygen isolation.
Argon gas (Ar)
Function: The chemical properties are extremely stable, providing a high-purity inert environment and avoiding contact between the material and oxygen.
Application scenarios: Semiconductor device manufacturing, titanium alloy processing, and other processes that require high purity.
Helium (He)
Function: Good thermal conductivity, suitable for rapid heating or cooling processes, while providing inert protection.
Application scenarios: Manufacturing of high-temperature alloys, heat treatment of special materials.

2. Reducing gas
Hydrogen (H ₂)
Function: Accelerate the heating process, improve the heat treatment effect, and participate in the reaction as a reducing agent.
Application scenarios: Metal powder metallurgy sintering, hydrogen reduction furnace process.
Attention: Strict pressure control and explosion prevention are required, and hydrogen leak alarm devices should be equipped.
Carbon monoxide (CO)
Function: As a reducing agent, it participates in the reduction reaction of metal oxides.
Application scenarios: Specific metal smelting, carbon material preparation.

3. Oxidizing gas
Oxygen (O ₂)
Function: Provide oxygen supply agent, promote combustion or oxidation reaction, and accelerate heating speed.
Application scenarios: Sample ashing, determination of ignition loss, metal oxidation treatment.
Attention: It is necessary to control the concentration to avoid excessive oxidation that may lead to a decrease in material properties.
air
Function: Contains approximately 21% oxygen, suitable for processes that require an oxidizing atmosphere.
Application scenarios: biomass fluidized pyrolysis, coal pyrolysis, etc.

4. Special mixed gas
Nitrogen hydrogen mixture (N ₂+H ₂)
Function: Combining nitrogen protection and hydrogen reduction characteristics, suitable for processes such as carburizing and carbonitriding.
Application scenarios: Metal surface treatment, annealing.
Nitrogen hydrocarbon mixture (N ₂+hydrocarbons)
Function: Provide a protective atmosphere while participating in carburizing or carbonitriding reactions.
Application scenarios: Heat treatment of alloy steel products, sintering of cutting tools.
Ammonia gas (NH3)
Function: Decompose to produce nitrogen and hydrogen, used for nitriding treatment or providing a reducing atmosphere.
Application scenarios: Metal surface hardening, synthesis of special materials.

5. Other special gases
Methane (CH ₄)
Function: As a carbon source, it participates in the carburizing process or decomposes to produce hydrogen gas, providing reducibility.
Application scenarios: Surface modification of metal materials, preparation of carbon materials.
Rare gases such as neon (Ne) and krypton (Kr)
Function: Provide high-purity inert environment, suitable for special material research.
Application scenarios: Aerospace material development, semiconductor device manufacturing.

KJ-1100-V60 fluidized bed tube furnace (click on the picture to view product details)

In general, vertical tube furnaces can accommodate a variety of gases and are used to achieve various processes. Before customizing the furnace, it is possible to communicate the parameters with relevant technical personnel, so as to customize a high-temperature vertical tube furnace that is more suitable for one’s own experimental or production needs!Click to learn more tube furnaces! Or click on online customer service to learn more about product information!