when welding rod melted. Welding, including welding master chef occupational respiratory infections, infections of mercury, fluorine infection, metal fume fever and electric ophthalmia, etc. Where chemical contamination (dust and harmful when the electrode melting air) Clinical manifestations of cough, dyspnea, chest oppression, breath, and sometimes bloody cough. Clinical manifestations are varied physical contamination. Acoustic pollution can cause upset welding teacher, head pain; high-intensity electromagnetic radiation effects on the human body mainly as neurasthenic syndrome. For example dizzy head, head pain, boring, palpitations, weight loss, hair loss, etc; underway glare can cause electric ophthalmia occurs when the electrode is melted. Light eye discomfort, foreign body sensation. Severe eye pain and a burning sensation.
