Workers engaged in electronic product welding have such a question: Is the smoke generated during the welding process harmful? Will it affect health?
Lead-free tin wire
is an alloy composed primarily of tin, but also contains other metals. It is mainly divided into lead 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. At present, the main products 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 proportion of each composition are different, the melting point of different solders is also different.
The smoke generated during the welding process is caused by the flux contained in the tin wire. There are 1 poisonous surface and 1 piece of poison, and the working place has a good ventilation system. Pay attention to washing your hands after work, which can basically be prevented. When soldering with leaded tin wire, some people ask: Will the metal, lead, evaporate with the fumes and be inadvertently inhaled during the soldering process? This is generally not the case. Although the melting temperature of lead is relatively low, to vaporize the lead, the temperature must reach about 1620 °C. Usually, the temperature of the soldering iron during the soldering process is about 300 °C, which is not too high, far from reaching The vaporization temperature of lead. The smell and smoke generated during the soldering process of lead-free tin wires are caused by flux and rosin of lead-free tin wires, which are not very toxic.
Precautionary work: Wear gloves, masks or anti-virus 1 mask during working hours, pay attention to ventilation in the workplace, have a good exhaust system, clean it in time after work, and use lead-free tin wire as much as possible.