Does everyone know whether solder wire is toxic or not?

Nowadays, many people are complaining in some factories, complainingSolder wireIs it toxic? I saw online that many people are saying itPCBThe factory worked with welding wire for a while, and then began to feel unwell, with a little swelling in the abdomen. Is this phenomenon caused by poisoning of the welding wire? Can welding wire cause lead poisoning? Regarding this issue, JJY solder Paste Manufacturer has also collected some small information for this purpose, hoping to be of help to you:

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The thick smoke produced during the electric welding of tin wire is due to the vaporization of the flux paste inside the tin wire when it meets the high-temperature ferrochrome. The tin wire modifier contains rosin and chemical raw materials. Long-term inhalation can cause adverse effects on people. Maintaining natural ventilation is better. The key active ingredients of rosin in tin wire are rosin anhydride and aromatic acid80%Epoxy resin hydrocarbon approximately5-6%Cinnamaldehyde and a small amount of bitter and astringent chemical substances, when used in tin wire electric welding, the operating temperature reaches250At extremely high temperatures, some metal oxides can be decomposed into carbon dioxide.

At present, there are mainly two types of solder wires: one is lead-containing solder wire, and the other is heavy metal-free solder wire. Whether it is lead-containing solder wire or heavy metal-free solder wire, both are harmful. Leaded solder wire is a common question that people usually ask about the temperature of the solder wire when buying it. It is very common and widespread6337Solder wire, and heavy metal-free solder wire refers to solder wire with a lead content of1000PbmThe following ones are in line withROHSStandardized solder wire can be imported and exported to the European Union or China, which has regulations on cleanliness. Lead is a toxic substance. Excessive digestion and absorption by the body can cause lead poisoning symptoms. Taking a small dose is very likely to harm intelligence, the central nervous system and the urinary system.

Whether solder wire is toxic or not mainly comes from lead. The lead fumes produced by soldering can easily cause lead poisoning.

The lead in lead-containing solder wire is definitely toxic. This poisoning actually needs to reach a certain degree. If lead-containing components are selected for soldering60%Contain tin40%The lead content in the solder wires on both sides is quite high. When soldering components with lead-containing solder wires, if one stays in a lead-containing environment for a long time without proper protection, lead poisoning may occur. Secondly, regarding the toxic situation of solder wire, it actually refers to the smoke produced when rosin-type solder wire melts at high temperatures during soldering, which contains an element harmful to the human body. During the operation of solder wire, whether leaded solder wire or lead-free solder wire is used, it is necessary to regularly check the blood lead. If it does not exceed the standard, there will be no problem at all. Generally speaking, if protection and raw material procurement are carried out in accordance with national standards, solder wire will not cause significant harm. Currently, most enterprises use lead-free solder wire, which can effectively prevent poisoning from solder wire.

Then, is lead-free solder wire non-toxic? In fact, it's not completely free of toxins. With the EUROHSThe introduction of standards is now becoming increasingly commonPCBThe welding factory has chosen lead-free and environmentally friendly solder wire. Leaded solder wire is also gradually being replaced. Non-environmentally friendly ones cannot be exported. Lead-free solder paste, lead-free solder wire and lead-free solder bar have become the main electronic soldering auxiliary materials in the electronics industry. Due to the maturity of technology and the improvement of soldering efficiency, most of the solder wires on the market are hollow and filled with rosin. When the rosin in the solder melts during soldering, the gas that volatilizes is slightly toxic. This gas is produced by the vapor of rosin oil, zinc chloride and other gases. Unpleasant gases will only be produced after being exposed to high temperatures. This is the same as leaded solder wire. Therefore, the main hazard factors for solder wire during soldering are lead and smoke. Lead fumes.GBZ2-2002The limit value in it is very low and it is highly toxic, so it requires special protection. Due to the damage caused by the welding process to human health and the environment, in Europe, the protection of welders and the environment has been enforced in the form of legislation. Welding without any protective measures is not allowed. All tin contains lead. In the past, solder wires had lead, which classified solder as an occupational hazard position. Nowadays, most enterprises use lead-free solder wire, whose main components are tin and copper. The wire measured by the Center for Disease Control and Prevention is tin dioxide, which is not included in the national occupational disease list. The lead fumes from lead-free processes are effectively controlled and relatively safe.

Secondly, for the operators engaged in soldering work, we suggest:

1When soldering with solder wire, it is important to note that the soldering time should not be too long. Generally, soldering1Take a break during the hours.10It takes about minutes and can relieve fatigue.

2Smoke less and drink more water. In this way, most of the harmful substances absorbed can be eliminated during the day.

3Drinking mung bean soup or honey water before going to bed can reduce internal heat and be beneficial to one's mood. Moreover, mung beans and honey can eliminate a large amount of lead and radiation absorbed.

4Wash your hands frequently and thoroughly after touching solder or doing work.

5Take a bath before going to bed. Try to go to bed early and get up early to ensure adequate sleep. As long as you sleep well, most impurities can be excreted through your body.

6For beginners who are just starting to practice handicrafts, it is advisable to wear a mask. However, for those who have just started practicing, the daily practice time will be relatively long, which is the period when the harm to the body is the greatest. Therefore, a mask must be worn during the work process.

The above is some small information for everyone. For those engaged in this field, they must work in a well-ventilated environment. If they work in the same place for a long time, it is best to install an exhaust fan.Solder wireIt is the main auxiliary material for electronic components in electric welding, widely used in the electronics industry, household appliance manufacturing, machinery manufacturing, maintenance industry and daily life. If you want to master the difficult problems related to soldering methods such as flux paste, lead-free solder paste, and solder paste, we warmly welcome you to consult Shenzhen JJY Industrial Production High-tech Co., LTD. Let's learn and grow together!