What Toxic Gases Are Produced During Welding?
Welding generates hazardous gases, including:
1. Ozone (O₃) – Forms when UV radiation reacts with oxygen; irritates lungs and eyes.
2. Nitrogen Oxides (NOₓ) – Created by high heat + air; causes respiratory inflammation.
3. Carbon Monoxide (CO) – Incomplete combustion; leads to dizziness or poisoning.
4. Phosgene (COCl₂) – Forms if chlorinated solvents (e.g., degreasers) vaporize; highly toxic.
5. Hexavalent Chromium (Cr(VI)) – From stainless steel welding; carcinogenic.
6. Metal Fumes – Zinc, cadmium, or lead vapors (depending on materials); cause neurological damage.
