Types of Gas Atmospheres
Inert Atmosphere: Used to prevent oxidation, combustion, or other reactions with oxygen. Common gases used for inert atmospheres include argon (Ar) and nitrogen (N₂).
Reducing Atmosphere: Used to promote reduction reactions in processes like sintering or carburizing. This could involve gases like hydrogen (H₂) or carbon monoxide (CO).
Oxidizing Atmosphere: Less common in furnaces but could be used for specific processes where controlled oxidation is required.
Considerations for Installation
Safety: The gas system should be equipped with proper safety devices, including pressure relief valves and flame arresters, to handle flammable or reactive gases.
Temperature Resistance: The components, such as piping and valves, should be rated for the high temperatures of the furnace.
Contamination Control: Filters and dryers might be used to prevent moisture or particulates from entering the furnace through the gas supply.
Applications for Gas Purging in Box Furnaces