Electric irons have internal heat and external heat What is the difference between them and how to distinguish them?
Hot electric iron, the mainly iron head, internal heating type iron core is arranged in the ceramic tube, the iron head within the external heat type; the iron core is spiral tubular, iron head through the iron core, it out heat.
Copper electric iron with internal heat.
The internal heating element is inside the copper head, and its heat efficiency is relatively high. The outside heat type electric heating wire is outside the copper head, and the power of the iron is related to the metal area to be welded. Small power electric soldering iron, suitable for welding small parts. Such as welding semiconductor device and integrated circuit power is not greater than 30W. High power iron welding larger.The greater the metal area, the greater the power of the iron used. The internal heating type heater, a large head, short service life, are usually small capacity; external heat slowly, small head, long service life, can be used for large capacity, such as: 300W1.Difference between internal heating and external heating electric irons:1, mainly in the different heating methods.2, they use the shape of the iron head, the former is hollow cylinder, and the latter is solid rod.3, the former warm-up time is shorter, but the temperature is slightly greater, especially small power type; relatively, the latter warm-up time is longer.4, the former leakage is slightly smaller than the latter.
