Soldering iron internal heat and external heat difference which is better
External heat soldering iron using electric heating tube on the outside, copper soldering iron head in the tube is heated, internal heat soldering iron is electric heating core in the copper soldering iron inside the heating, internal heat soldering iron thermal efficiency than the external heat soldering iron efficiency is higher.
Endothermic heating element inside the copper head, its thermal efficiency is higher. And external heat type of electric wire in the copper head outside, the power of the iron and the welding of the metal area. Small power soldering iron is suitable for welding small parts. Such as welding semiconductor devices and integrated circuits, the power is not greater than 30 W. High-power soldering iron welding larger parts.
The larger the metal area, the greater the power of the soldering iron used. Endothermic heat fast, head large, short life, usually small capacity; external heat some slower, head small, long life, can be made for larger capacity, such as: 300W1.
The difference between endothermic and exothermic soldering iron:
1, mainly in the heating mode of the different.
2, they use the shape of the soldering iron head, the former is a hollow cylinder; the latter is a solid rod.
3, the former preheating time is shorter, but by the temperature is slightly larger, especially small power type; Relatively, the latter preheating time is slightly longer.
4, the former than the latter leakage slightly smaller.
First, you can not absolutely say that kind of good, depending on what you use: welding small parts, such as electronic components, endothermic good; welding large parts, external heat is good to use.
Second, the structure is different: endothermic heating element in the copper head inside, its thermal efficiency is relatively high; external hot wire in the copper head outside, the power of the iron and the welding of the metal area.
Third, the power: small power soldering iron is generally endothermic, suitable for welding small parts. Such as welding semiconductor devices and integrated circuits is not greater than 30 W. High-power soldering iron is generally externally heated, welding larger pieces. The larger the metal area, the greater the power of the soldering iron used.
Fourth, the heating speed is not the same: endothermic hot fast, big head, short life, usually small capacity; external heat some slow, small head, long life, can be a larger capacity.
Personally believe that the endothermic soldering iron is better to use, because the market of the external hot soldering iron iron head is not easy on the tin, very inconvenient welding, in addition, if the soldering things need to be placed on the leakage and the temperature can not be too high, then choose the temperature-regulated soldering iron with leakage protection!
