Application of soldering iron
There are basically two ways to hold a soldering iron. One is to grasp the handle with full hands, a solid grip. Beginners can use this method to make it comfortable; the other is to hold the head down, like holding a pen, and hold it empty. Veterans hold it this way. The virtual grip operation is fast and efficient, especially when assembling and disassembling small components. Of course, there are also other ways to use the design documents on the production line.
Use of soldering iron
Before using a new soldering iron, polish the tip with fine sandpaper, apply electricity and heat it, dip it in rosin and touch the blade edge of the tip to the soldering wire to evenly coat the tip with tin. Doing so can facilitate soldering and prevent the surface of the soldering iron tip from oxidizing. If the old soldering iron tip is severely oxidized and turns black, you can use a steel foil to remove the surface oxide to expose the metallic luster, and then re-tin plating it before use.
The soldering iron requires a 220V AC power supply, so pay special attention to safety when using it. The following points should be done carefully:
(1) It is best to use a three-pole plug for the soldering iron plug. Make sure the enclosure is properly grounded.
(2) Before use, carefully check whether the power plug and power cord are damaged. And check whether the soldering iron tip is loose.
(3) When using the soldering iron, do not hit it hard. Be careful not to fall. If there is too much solder on the tip of the soldering iron, wipe it off with a cloth. Do not throw it around to avoid burning others.
(4) During the welding process, the soldering iron cannot be left lying around. When not soldering, it should be placed on the soldering iron stand. Note that the power cord cannot be placed on the soldering iron tip to prevent the insulation layer from being burned and causing an accident.
(5) After use, the power supply should be cut off promptly and the power plug should be unplugged. After cooling, put the soldering iron back into the tool box.
Welding consumables
When welding, solder and flux are also needed.
(1) Solder: To weld electronic components, solder wire with a rosin core is generally used. This kind of solder wire has a lower melting point and contains rosin flux, making it extremely easy to use.
(2) Flux: Commonly used flux is rosin or rosin water (dissolve rosin in alcohol). Using flux can help remove oxides from the metal surface, facilitate soldering, and protect the soldering iron tip. Solder paste can also be used when soldering larger components or wires. However, it is corrosive to a certain extent, and the residue should be removed promptly after welding.
Auxiliary tools
To facilitate welding operations, needle-nose pliers, offset pliers, tweezers, and knives are often used as auxiliary tools. You should learn to use these tools correctly.
