The reason why the soldering iron tip is corroded
The iron tip coating is generally iron-nickel-chromium-tin, and the iron coating is the key to the quality of the soldering iron tip. At high temperature, iron and tin will form an alloy, which will dissolve in liquid solder, resulting in the loss of iron coating on the surface of the soldering iron tip. , the final phenomenon is the perforation of the soldering iron tip.
Lead has the effect of inhibiting the speed of this alloy, and of course it cannot be completely eliminated.
In addition, the higher the tin content in lead-free solder, the more serious the corrosion; the higher the temperature, the faster the corrosion. This is why lead-free soldering iron tip is faster than lead soldering.
