How can electric iron be soldered well?
An electric iron that selects the right temperature. Choose the solder wire of suitable melting point. When welding, the iron head is used to heat the welding part, and then solder the solder wire to the tip of the soldering iron. The welding wire will automatically pile up between the pad and the pin. The feeding amount of welding wire is generally suitable for the pad on the circuit board. Do not have a new product rosin, the iron has not heard of, rosin, solder paste are soldering flux, play the role of oxidation of the solder joints, the appearance of smooth and plump role, it is necessary to use things. What you said is probably the solder wire containing rosin, that wire is hollow and filled with loose powder.
First of all, the electric iron hot, welding parts clean up, on the tin, and then welding pieces together welding, OK. Note that the power of the soldering iron must not be too small.
