Can the soldering iron be heated without oxygen?
Soldering irons can be heated in the absence of oxygen. Because oxygen is not involved in the heating process of the soldering iron.
The soldering iron is heated by using the heating phenomenon when the electric current passes through the alloy resistance wire. Soldering iron can be roughly divided into two kinds of endothermic and exothermic.
The external heat type puts the iron head in the centre part of the heating body, because the heat source comes from the outside of the iron head, so it is called the external heat type. And the internal heat type of the iron head into a hollow shape, the heat generator is placed in the cavity, so the volume is more compact.
The subject said oxygen, although in the soldering iron heating process does not play any role, but in the interference soldering and shorten the life of the soldering iron or a great "contribution".
In the high temperature state of the electric wire in the oxygen environment will appear oxidation phenomenon, over time the oxidation layer off to cause the electric wire thin, cruelty, shorten the service life of the soldering iron. In addition, oxygen will also cause oxidised layer on the surface of the molten tin and the metal to be soldered, blocking the soldering process. For this reason, soldering work is inseparable from the flux, whose function is to prevent oxidation.
If you can really create an oxygen-free environment for soldering, it will greatly improve the efficiency of soldering, welding aluminium will also become a breeze, but also extend the life of the soldering iron.
In the actual use of the soldering iron should pay attention to the following points ① choose the right wattage of the soldering iron, do not make the iron overheating, otherwise both waste of electricity will also accelerate the oxidation process affecting the welding ② learn to observe and judge the temperature and fluidity of the solder. When the solder temperature is appropriate, the surface will be very bright silver-white and have good mobility. If the surface turns blue quickly, the temperature is too high, need to reduce the wattage or switch to a constant temperature iron. ③Prevent violent vibration. Because the high temperature resistant material of the core of the soldering iron are made of ceramics or mica to act, it is easy to break, when using it, hold it gently and put it away. ④Acidic flux is strictly prohibited when soldering electronic components to prevent corrosion and leakage. The best flux is rosin. However, when soldering steel parts, such as tinning difficulties can be used first with acidic flux to do a good job on the tin, and then carefully cleaned, and finally completely welded with rosin flux.
