■ The reason for the failure of the soldering iron tip is that the soldering iron tip cannot be soldered and the soldering operation cannot be performed. The reasons for the failure of the soldering iron tip are as follows:
    

1) The newly purchased soldering iron tip is used directly without trimming, resulting in the soldering iron tip not being tinned.

2) The tip of the soldering iron used for a long time is not tin, the tip of the soldering iron. Burn tonic, it needs to be repaired.

 ■  In order to prevent the failure of the soldering iron head, you need to pay attention to the following points when using:

1) Newly purchased soldering iron tips must be trimmed before use. Ordinary pure copper soldering iron tips and longevity soldering iron tips have different trimming methods, and care should be taken.

2) When the soldering iron tip is not in use, the soldering iron tip needs to be plated with solder, which is usually placed with tin. Placed with tin can prevent the surface of the soldering iron tip from being oxidized, and also reduce the volatilization of the coating on the copper soldering iron tip.

3) It is forbidden to strike the desktop with a soldering iron tip during use to avoid damaging the soldering iron tip.

4) Longevity soldering iron heads are not allowed to be polished with files or sandpaper, but wiped with a rag or wet fiber sponge.