What kinds of solder are used with soldering irons?
Solder wire is added to the surface and gaps of electronic components as filler metal to fix electronic components. When purchasing solder wire, be sure to choose high-quality products.
The commonly used wire diameters of solder wire are 0.6mm, 0.8mm, 1.0mm, 1.2mm and so on. FLUX indicates the rosin content of solder wire, mainly including 2.0%, 2.2%, 2.5% and so on.
The label of leaded solder wire: n means tin content, Pb means lead content, tin content is generally called "degree" in the industry, and degree refers to the amount of tin contained in leaded solder wire.
For example, 63 degrees means that the tin content is 63% and the lead content is 37%; 45 degrees means that the tin content is 45% and the lead content is 55%.
Is soldering iron poisonous?
It depends on whether the soldering iron solder is leaded solder wire or lead-free, and the blood lead is checked regularly, and there will be no problem if it does not exceed the standard.
According to national standards for protection and raw material procurement, solder will not cause major harm, and basically lead-free products are used.
Lead is a toxic substance. Excessive absorption by the human body will cause lead poisoning. Ingestion of low doses may affect human intelligence, nervous system and reproductive system.
The alloy of tin and lead is commonly used solder, which has good electrical conductivity of metal and low melting point, and has been used in welding process for a long time. Its toxicity mainly comes from lead, and the lead fume produced by soldering can easily lead to lead poisoning.
Metallic lead may produce lead compounds, which are classified as hazardous substances. In the human body, lead can affect the central nervous system and kidneys.
If the blood lead concentration exceeds 10 μg/dl, sensitive biochemical effects will occur. If the blood lead concentration exceeds 60-70 μg/dl after long-term exposure, it will cause clinical lead poisoning.
Lead is definitely poisonous, and there will be smoke when soldering, which contains an element that is harmful to the body.
When performing soldering operations, pay attention to personal protection to reduce the harm of lead poisoning to the human body. If you use lead-free solder wire, it will be much safer than lead-containing solder wire.
