Application introduction of electric soldering iron
Before using a new soldering iron, polish the tip of the soldering iron with fine sandpaper, heat it up with electricity, dip it in rosin, and touch the solder wire with the blade of the tip of the soldering iron, so that the tip of the soldering iron is evenly coated with a layer of tin. Doing so can facilitate soldering and prevent surface oxidation of the soldering iron tip. If the old soldering iron tip is severely oxidized and blackened, the surface oxide can be removed with steel foil to expose the metallic luster, and then re-tinned before use.
The electric soldering iron should use 220V AC power supply, and special attention should be paid to safety when using it. The following points should be carefully done:
(1) It is best to use a three-pole plug for the electric soldering iron plug. Make sure the case is properly grounded.
(2) Before use, carefully check whether the power plug and power cord are damaged. And check whether the tip of the soldering iron is loose.
(3) Do not strike hard when the electric soldering iron is in use. To prevent falling. When there is too much solder on the tip of the soldering iron, wipe it off with a cloth. Do not throw it around, so as not to burn others.
(4) During the soldering process, the soldering iron cannot be placed anywhere. When not soldering, it should be placed on the soldering iron stand. Note that the power cord cannot be placed on the tip of the soldering iron to prevent accidents caused by scalding the insulation layer.
(5) After use, the power supply should be cut off in time, and the power plug should be pulled out. After cooling, put the soldering iron back into the toolbox.
When soldering, solder and flux are also required.
(1) Solder: For welding electronic components, solder wire with rosin core is generally used. This solder wire has a low melting point and contains rosin flux, which is extremely convenient to use.
(2) Flux: The commonly used flux is rosin or rosin water (dissolve rosin in alcohol). The use of flux can help remove oxides on the metal surface, which is good for soldering and protects the tip of the soldering iron. Solder paste can also be used when soldering larger components or wires. But it is corrosive to a certain extent, and the residue should be removed in time after welding.
auxiliary tool
In order to facilitate the welding operation, needle-nose pliers, partial-nose pliers, tweezers and knives are often used as auxiliary tools. Learn to use these tools correctly.
