Inert Gas Mixing System
An inert gas mixing system mixes and doses shielding gases like argon or helium before welding to create a constant environment for the metal.
Physicochemical mechanism of action
The inert gas mixing system measures the concentrations of the input gases and mixes them in preset proportions. It ensures that the weld metal is protected from oxygen and other oxidizing agents during processing.
Metallurgical relevance & welding risks
Without correct gas dosing, the weld metal can oxidize, leading to porosity and low strength. Insufficient inert gas supply increases the risk of hot cracking and negatively alters the metal's microstructure.
Workshop practice & action instructions
Make sure the mixing system is calibrated regularly. Continuously monitor gas flows and their concentrations. For critical welding jobs, use a high proportion of inert gases (e.g., 98% argon) to ensure maximum protection.