Mechanical processing industry, what masks to choose

Welding and gas cutting are indispensable and important processing technologies in modern industrial production and equipment maintenance. In the mechanical processing industry, welding is a high-density operation and occupational hazards are very concentrated. As a special operating personnel, understanding of the respiratory hazards that lead to occupational diseases, As well as the selection of safe and effective respiratory protective equipment, professional introduction is lacking. Welder pneumoconiosis is common in China, and the majority of welding workers have less access to relevant knowledge. We hope that we can help welding workers prevent the occupational hazards of welding fumes and provide safe and effective respiratory protective equipment.

1. Occupational hazards caused by welding and cutting operations

There are many types of harmful substances produced by welding operations. Metal elements, welding agents, and all kinds of harmful substances and welding fumes under the action of high-temperature flames endanger the health of workers. The most common occupational diseases are welders' pneumoconiosis and metal fume fever. The main form of transmission is the physical health of workers who inhale into the lungs through welding fumes.

(1) Metal fume fever - The main symptoms are chills after work, followed by fever, burnout, metallic taste in the mouth, nausea, itchy throat, difficulty breathing, chest pain, loss of appetite and so on.

(2) Manganism poisoning - early manifestations of fatigue, headache, dizziness, drowsiness, poor memory and autonomic dysfunction, such as the slight tremor of the tongue, eyelids and fingers, turning, squat difficult.

Toxic gas hazard

(1) Nitrogen oxides - stimulate the lungs

(2) Ozone - A strong irritant to the human respiratory tract and lungs.

Respiratory protection for welders should be combined with job features. In open-air operation, the harmful substances generated by welding will not be concentrated at high concentration, and the hazards will be lighter; the high-density operations in narrow spaces or large spaces will reach very high levels of harmful substances, and will be the last line of defense for protecting the health of workers. Respiratory protection can not only be effective, but in many cases, the cost of personal protective equipment (such as welding gas masks, dust masks, such as Wuhan Dragonfly masks) is lower than that of ventilation facilities.

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