How to use soldering iron rosin
1. Rosin is a flux. When the tip of the soldering iron taps the rosin, the rosin makes a "chuck" sound and emits a puff of white smoke, indicating that the temperature is suitable and it can be welded. When using it, you can coat the solder joints and weldments Rosin (or tap it after it is hot), and then, touch the soldering iron tip, solder, and solder joint for 2-3 seconds. After the solder is evenly melted, remove the soldering iron tip to complete the soldering.
2. With rosin, it is easier to "eat tin", and the soldered spots are brighter, and it is not easy to form a false weld.
3. Rosin prevents the oxidation of the weldment, first remove the oxide layer, and hang tin in the rosin. Put some rosin on the solder joints, hang tin in the rosin, and then solder.
4. Wipe off the oxide layer of the copper wire with fine sandpaper, bury (put) it in rosin, put a large tin ball (about the size of a match head) on the soldering iron, put it on the copper wire for about a second or two, lift the soldering iron and take it out line. Put some rosin on the circuit board, put a small tin ball on the soldering iron for about a second or two, wait for natural cooling for more than 30 seconds, then put the wire on, and then relax the incense, put a small tin ball on the soldering iron for about one or two seconds Seconds, remove the soldering iron, hold the thread and wait for natural cooling for more than 3 seconds before letting go. Pay special attention to the grounding of the soldering iron shell, and the grounding of people. anti-static. Some components are soldered while connected to "ground". Don't!
