Soldering tip life is determined by solder joints, and it is also connect with the thickness of the plating
layer on the tip head.The thicker the plating layer, the longer the tip life. But the thermal conductivity
efficiency will be reduced greatly. For the same lead free soldering tip under the same temperature,
the thin tip life is shorter thank thick tip. So in our working for soldering, there is loss for plating on
the soldering tip surface. Therefore, the thin soldering tip is easy to be lost and will reduce the
soldering tip life.