Is it possible to heat a soldering iron in an environment where there is no oxygen?
The soldering iron can be heated in the absence of oxygen. Because oxygen does not participate in the heating process of the soldering iron.
The electric soldering iron uses the heating phenomenon when electric current passes through the alloy resistance wire to heat. Electric soldering irons can generally be divided into two types: internal heating type and external heating type.
The external heating type places the soldering iron tip in the center of the heating body. Since the heat source comes from the outside of the soldering iron tip, it is called the external heating type. The internal heating type makes the tip of the soldering iron into a hollow shape, and the heating element is placed in the cavity, so the volume is relatively compact.
Although the oxygen mentioned by the question does not play any role in the heating process of the soldering iron, it still makes a great "contribution" in interfering with welding and shortening the life of the soldering iron.
The heating wire at high temperature will oxidize in an aerobic environment. Over time, the oxide layer will fall off, causing the heating wire to become thin and damaged, and shorten the service life of the soldering iron. In addition, oxygen will also cause an oxide layer to appear on the surface of the molten tin and the metal being welded, blocking the welding process. For this reason, soldering work is inseparable from flux, whose function is to prevent oxidation.
If we can create an oxygen-free environment for welding, it will greatly improve the welding efficiency, welding aluminum will become a breeze, and it can also extend the service life of the soldering iron. But people have to put on oxygen masks. Of course this is just a joke.
Pay attention to the following points when actually using a soldering iron
①Choose a soldering iron with appropriate wattage and do not overheat the soldering iron, otherwise it will waste electricity and accelerate the oxidation process and affect the welding.
②Learn to observe and judge the temperature and fluidity of solder. When the solder temperature is suitable, the surface will be very bright silvery white and have good fluidity. If the surface turns blue quickly, it means the temperature is too high and you need to reduce the wattage or use a constant temperature soldering iron.
③Prevent severe vibration. Because the high-temperature-resistant materials used to make the soldering iron core are made of ceramic or mica, they are easily broken, so handle them with care when using them.
④It is strictly prohibited to use acidic flux when welding electronic components to prevent corrosion and leakage. The best flux is rosin. However, when welding steel parts, if there is difficulty in tinning, you can first use acidic flux to do the tinning work, then clean it carefully, and finally use rosin to flux and solder completely.
