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What is the difference between lead and lead-free solder wire

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Update time : 2022-09-02 10:36:20
Lead-containing solder wire needs to be manually added with lead. According to the standard, the content of tin in the tin wire should be about 63%, and the content of lead should be about 37%. The lead-free tin wire is not completely lead-free, but only contains lead. relatively low. However, because the temperature of lead-free solder wire is relatively high, it is easier to corrode the iron, so if the requirements for corrosion are very high, a special electric soldering iron needs to be used.
There are many types of solder wire. The more common ones are lead and lead-free. What is the difference between lead and lead-free solder wire? Let's take a brief look.
1. What is the difference between lead and lead-free solder wire
The main difference between the two is the lead content. Lead-containing solder wire needs to be manually added with lead. According to the standard, the content of tin in the tin wire should be about 63%, and the content of lead should be about 37%. The lead-free tin wire is not completely lead-free, but only contains lead. relatively low. However, because the temperature of lead-free solder wire is relatively high, it is easier to corrode the iron, so if the requirements for corrosion are very high, a special electric soldering iron needs to be used.
2. What are the skills of soldering wire
1. There are many types, models and specifications of solder wire. When choosing, the construction personnel need to decide according to the item to be welded. For example, when welding electronic components, it is necessary to use solder wire with a low melting point, so as to avoid the welded item being burned. Or welded through.
2. Before using an electric soldering iron, it is necessary to heat the soldering iron first until the temperature rises to a temperature that can melt the solder wire, and then carry out tin treatment. Pay attention to the treatment, and the solder wire needs to be evenly applied to the iron head. , so that the iron head can eat tin evenly, and the welding effect will be good.
3. Before welding, it is necessary to polish the welding objects with sandpaper, and then apply flux, so that the effect will be better. In addition, when the iron head is dipped in the solder wire, it must wait for all the solder wire on the head to melt before it can be clicked on the welding original.
4. When using solder wire for welding, the welding time must be well controlled, and it should not be too long, otherwise it is easy to burn the welding objects. If the situation is difficult to handle, it is recommended to clamp the discipline with special tweezers to help the welding objects dissipate heat and avoid burns.
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