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Hazards of argon arc welding

Hazards of argon arc welding
Issue Time:2016-12-06

Hazards of argon arc welding:

 (1) argon arc welder pneumoconiosis pneumoconiosis is due to long-term inhalation of dust caused by exceeding the prescribed concentration caused by diffuse lung fibrosis of the disease. Pneumoconiosis is due to long-term inhalation of exceeding the allowable concentration of the iron oxide and there is amorphous silica, silicate, manganese, iron, chromium, ozone, nitrogen oxides and other mixture of smoke and toxic gases, and in the organization long-term effects caused by mixed pneumoconiosis. According to the related data, the hair disease of our country service welder pneumoconiosis for 7 years, the average length of service for 20 to 30 years, and the apparent incidence in north cold area rate is high, the phenomenon of the low incidence of the southern region. This is mainly due to the cold weather in the north, the workshop closed doors and windows for a long time, the reasons for poor ventilation conditions of natural ventilation. Welder pneumoconiosis mainly for respiratory symptoms: shortness of breath, cough, expectoration, chest tightness and chest pain. Some patients may be a welder's pneumoconiosis weakness, loss of appetite, weight loss and neurasthenia syndrome (such as headache, dizziness, insomnia, somnolence, insomnia, memory loss, etc.) also have effect on lung function. 

(2) manganese poisoning: 

manganese vapor in the air can be quickly oxidized into gray manganese oxide (MnO) and brown red four oxide three manganese (Mn3O4) smoke. The welder long-term inhalation of manganese and its compounds exceed the allowable concentrations of particulate and vapor, it may cause manganese poisoning. Welder manganese poisoning incidence is very slow, mostly in contact with 3 to 5 years, even up to 20 years before onset gradually. In the early stage of chronic manganese poisoning, fatigue, fatigue, headache, dizziness, insomnia, memory loss and plant nerve function disorders, such as the tongue, eyelid and the subtle vibration of the fingers, etc.. Poisoning further development, the nerve symptoms are more obvious, and change, cross, squatting, and so are more difficult to walk around when the performance of the swing or before the fall, when the vibration is not clear when writing.

 (3) Welder metal heat:

Metal heat is a common syndrome with enough contact with some metal dust concentration of the workers. Welder hot metal refers to suck the dust in the weld metal 0.05 ~ 0.5Pm copper oxide, Zinc Oxide, alumina, manganese oxide and iron oxide particles and fluoride, easily through the respiratory tract into the terminal bronchioles and alveoli, and then into the blood, causing the metal thermal reaction welder. The heat of metal is not a chronic disease, but a kind of recurrent acute even disease. The main symptom is after feeling a metallic taste in the mouth, anorexia, nausea, chills, mostly low fever. Welder hot metal in the regular common copper and copper alloy welding workers, the use of basic welding electrode often in the cabin, airtight containers, is also prone to this disease.