What are the differences between mixed gases and pure gases?

Carbon dioxide mixed gas welding is a welding method in which carbon dioxide gas and other gases (such as argon, helium) are mixed in a certain proportion and then used. Pure carbon dioxide welding, on the other hand, only uses pure carbon dioxide gas for metal welding.

Carbon dioxide mixed gas welding can better control the formation of bubbles during welding, and thus is suitable for thick plate welding. Pure carbon dioxide gas welding, on the other hand, is suitable for thin plate welding and can be used for groove and seam welding.

Due to the fact that the mixed gas has a more stable welding arc and a lower spark content, it is usually used in situations such as rapid welding and high-speed arc welding. On the contrary, pure carbon dioxide gas welding will produce more melted flowers, but this method is relatively less costly.

Carbon dioxide mixed gas welding is suitable for welding a variety of materials, including stainless steel, aluminum, magnesium, titanium and other precious alloys. Pure carbon dioxide gas welding is only suitable for welding carbon steel and some low alloy steels.

In conclusion, although both mixed gas and pure carbon dioxide gas welding can complete metal welding tasks, they each have unique characteristics and application scopes. Therefore, when choosing a metal welding method, it is necessary to select the most suitable welding method based on specific application requirements.