Tips for soldering iron lead-free soldering

First, the problem of lead-free solder:

High melting point (30-40 degrees higher than Sn and Pb solder), tin wire is not easy to melt;

The tip consumes faster;

The iron tip is oxidized faster;

Infiltration and ductility are deteriorated;

It is prone to tin whiskers and short circuits;

Second, the principle of the consumption of soldering iron:

The iron plating layer is dissolved by the tin in the tin wire;

The iron plating layer of the soldering iron forms a compound with tin;

After lead-free, the soldering temperature increases and the soldering iron tip is strengthened;

Third, the point of attention when using lead-free solder:

1, the temperature management of the tip is very important

2. Use a soldering iron with good thermal properties such as thermal recovery;

When using lead-free solder for soldering operations, the tip temperature is generally set at 350Â°â€“370Â° due to the heat resistance of the part and the safe operation.

3, it is necessary to select the most suitable tip

Depending on the soldering operation of the soldering iron, it is important to select the most suitable soldering iron tip. A suitable soldering iron tip can lower the temperature of the soldering iron tip and increase the efficiency of the operation.

4. The maintenance of the tip is also very important:

â—† Unlike ordinary water-containing sponges, it is necessary to use a wire with a soaking aid, that is, without lowering the temperature of the tip, it can also play a role of cleaning, and can also remove oxides on the surface of the tip.

â—† Set the low temperature of the tip as much as possible.

â—† When not in use for more than 10 minutes, the power of the soldering iron should be cut off.

â—† When the soldering iron is oxidized and blackened, first remove the oxide with the flux of the flux. If it cannot be removed, remove the oxide on the surface with a wire cleaner of the soaking aid, and then apply a new solder.

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