Why should the implementation of lead-free process?

2016-06-21 09:56:12 -

Characteristics and lead to health hazards: lead (lead Pb), gray metal, a melting point of 327.5 ℃, heated to 400--500 ℃ when a large number of lead that is escaping steam, ethylene oxide and quickly oxidized in air lead and aggregation of dust and four escape. In the industrial sector in contact with lead are mainly lead mining, refining and lead rope burn, battery manufacturing, electronic products and electronic components of the welding work lead spray and so on. Lead and its compounds in the above contacts, mainly through the respiratory and digestive tract produce lead poisoning caused by invasion of the body, constitute a hazard to human health. EPA study found that lead and its compounds are one of the serious harm to human life and the natural environment of the 17 kinds of chemical substances. Occupational lead poisoning is usually chronic poisoning, the human nervous system, blood and digestive system will cause interference and damage, which provides temporary symptoms of dizziness, headache, fatigue, memory loss, nausea, irritability, loss of appetite of appetite, abdominal pain, anemia, mental disorders.

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