Such as blade scraping, although to tin, but in a few hours with not occupied, and find solutions
The electric iron does not solder tin because the iron head is heated for a long time and is exposed to oxidation in air. The solution is not in the case of heating by sanding, the exposed metal surface color fresh (scraping blade can), and then power, gradually try to melt the rosin (not paste), and touch the solder wire, with increasing temperature, make the soldering iron head plated a layer of tin (from the air), after the iron head will not be burned. Should pay attention to regular maintenance, after use, while hot with dry cotton cloth, wipe the iron head, leaving no debris, at the same time pay attention to the head always has a layer of solder
The temperature is too high, or a special iron head is damaged
After the tin, it is better to let the tin wrap the iron head, and later use, as long as the tin is guaranteed to live, it will not be oxidized, and then no more tin. Used up in time to break the power supply, and at the same time, the point of rosin on the tin, rosin can not be used, after the oxidation will not be tin.
