Welding fumes are a mixture of metal fumes and gases produced during welding operations. Welding fumes generally have different compositions and contaminants depending on the base material being welded, base material coatings, and the welding consumables and processes being used.
- Mixture of airborne particles and gasses released or produced by various welding processes
- Composition varies according to the welding process and consumables in which weld fume composition typically contains metal oxides and other metal reaction products, particulate from flux of electrodes and gases produced by UV light like ozone and shielding gases
- Compounds. 90% of weld fume particles come from the welding consumables
- Type and quality of base materials being welded including coatings (ie. oils, rust inhibitors, paint, zinc etc.)
- Finer dust mass such as weld fume is alveolic in nature in which it can accumulate in the lungs and remain in the body
Welding fumes mix with the air we breathe and can enter the human body by inhaling and through the lungs. The picture below illustrates the size of welding fume particles in comparison to other particles.
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