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How to prevent the smoke generated by lead-free tin wire during soldering

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Update time : 2022-12-27 14:06:53
Lead-free tin wire is an alloy consisting primarily of tin, but also containing other metals. Mainly divided into leaded and lead-free, everyone knows that lead is a toxic metal, so lead-free is more environmentally friendly. Now more and more factories choose lead-free and environmentally friendly, and lead-tin wires are gradually being replaced. The main products currently on the market are lead-free solder paste, lead-free solder bars, and lead-free solder wires. Leaded solder is mainly composed of tin and lead in various proportions; lead-free solder is composed of tin-copper, tin-silver-copper, etc. Since the composition of the alloy and the ratio of each composition are different, the melting points of different solders are also different.
The smoke generated during the welding process is caused by the flux contained in the tin wire. The flux is composed of rosin and some active agents. There will be some odor, but this is not harmful. As long as you wear a mask or prevent One surface and one tool are poisonous. The exhaust system in the workplace is good. Wash your hands after work, which can basically prevent it. When soldering with lead-tin wire, some people may ask: Will the metal lead evaporate with the smoke during the soldering process and be inadvertently inhaled? This is generally not possible, although the melting temperature of lead is relatively low, but to vaporize lead, the temperature must reach about 1620°C. Usually, the temperature of the soldering iron is about 300°C during the soldering process, which is not too high, far from reaching The vaporization temperature of lead. The smell and smoke produced during the soldering process of the lead-free solder wire are caused by the flux and rosin of the lead-free solder wire, and the toxicity is not high, just pay attention to the exhaust.
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