CO2 is low cost and deep penetrating; it causes more what?

The selection of spatter as the result of using CO2 gas in welding processes is accurate due to the characteristics of carbon dioxide as a shielding gas. When CO2 is used, it tends to produce a higher heat input which can lead to increased droplet formation from the weld pool. This is particularly relevant in processes like GMAW (Gas Metal Arc Welding), where the conductive properties of CO2 create a more energetic arc. As a result, more molten metal can be expelled from the weld, manifesting as spatter.

Spatter consists of small droplets of molten metal that are expelled during the welding process, and its occurrence is often influenced by the type and composition of the shielding gas. With CO2, the energy concentration tends to be greater, causing more metal to be ejected from the weld bead. This aspect is important for welders to consider, as excessive spatter can impact the quality of the weld and the amount of cleanup needed after the welding operation.

Understanding this phenomenon is crucial for welding applications, especially in regards to maintaining a clean working environment and achieving high-quality welds. This knowledge aids welders in making informed decisions about shielding gases based on their application requirements and desired outcomes.