In the process of electric welding, when covered electrode comes into contact with the weldment, it is a kind of smoke produced under the condition of high temperature combustion. This kind of smoke contains manganese dioxide, nitrogen oxides, fluoride, ozone and so on. Floating in the air does harm to the human body.
The most common disease is pneumoconiosis, the largest occupational disease, which can never be cured after illness. Secondly, long-term inhalation can also cause manganese poisoning, welder's throat fever and nervous system damage.
At present, there is no better way, which can only be solved by wearing respiratory protective equipment with higher protection level. It is recommended to use some high-end well-known brands, such as Teichman's electric air supply respirator, to prevent it as soon as possible.