Adding a deoxidizer during welding may help to:

Adding a deoxidizer during welding plays a crucial role in preventing a loss of certain alloying elements. In the welding process, oxidation can occur, especially when certain metals are exposed to high temperatures and oxygen. This oxidation can lead to the formation of oxides that can negatively impact the properties of the weld and result in a loss of valuable alloying elements within the weld metal.

Deoxidizers, such as aluminum or silicon, are added to the filler material or base metal to react with free oxygen, forming stable oxides that do not interfere with the welding process. By doing this, the deoxidizers allow for a more consistent composition of the weld pool, ensuring that the desired mechanical properties and corrosion resistance of the alloy are maintained. As a result, the overall integrity and performance of the welded joint are enhanced, making the choice to include a deoxidizer a critical factor in high-quality welding practices.