What are the different types of soldering irons available?
There are two types of solder used on electric soldering irons, one is solder wire and the other is solder bar. Here we introduce the solder wire used in manual soldering of electronic components for your reference.
Solder wire is used as a filler metal to add to the surface and gaps of electronic components to fix the electronic components. When purchasing solder wire, be sure to choose high-quality products.
The commonly used wire diameters of solder wire mainly include 0.6mm, 0.8mm, 1.0mm, 1.2mm, etc. FLUX indicates the rosin content of the solder wire, which mainly includes 2.0%, 2.2%, 2.5%, etc.
The label of lead solder wire: n represents the tin content, and Pb represents the lead content. The industry generally refers to the tin content as "degree", and the degree refers to the amount of tin contained in the lead solder wire.
For example, 63 degrees means the tin content is 63% and the lead content is 37%; 45 degrees means the tin content is 45% and the lead content is 55%.
Is soldering iron poisonous?
This depends on whether the soldering iron solder has lead solder wire or is lead-free, and the blood lead should be checked regularly. If it does not exceed the standard, there will be no problem.
Protection and raw material procurement are carried out in accordance with national standards. Soldering will not cause major harm, and lead-free products are basically used.
Lead is a toxic substance. Excessive absorption by the human body can 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. It has good electrical conductivity and a low melting point. It has been used in welding processes for a long time. Its toxicity mainly comes from lead, and the lead smoke produced by soldering can easily lead to lead poisoning.
Metal lead may produce lead compounds, which are classified as hazardous substances. In the human body, lead can affect the central nervous system and kidneys.
Blood lead concentrations above 10 μg/dl will produce sensitive biochemical effects. Long-term exposure will cause clinical lead poisoning if the blood lead concentration exceeds 60~70 μg/dl.
Those containing lead are definitely toxic, 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.
