When the new electric iron is heated for a period of time, the tip cannot melt the solder. What is the reason that the solder can be melted on the edge of the iron head?
Clean your head and return to the tin
The temperature is too high and the iron head is oxidized. Move the iron head out properly.
The new electric iron needs at the beginning, is prepared with rosin solder, use sandpaper to polish the tip of the soldering iron head Rui oxide layer, and then the electric heating, raise temperature slightly after the furnace head into the rosin, heating to melt out to solder temperature, solder to melt quickly the iron head, the head of all melting tin, again into the rosin, which completely fused out good, cool, use next time will normally use,
