It's no stranger to people who are engaged in soldering, but now there are internal heating soldering irons and external heating flipping on the market. What's the difference between them? Below, Xiaobian will give you friends who eat melons a detailed explanation ...

 

 

 

The heating wire of the internal heating soldering iron is wound around a ceramic rod, which is insulated by a ceramic tube. When in use, the welding head is sleeved outside the ceramic tube, and the heat is transferred from the inside to the external welding head, which is called internal heating type.

 

 

 

External heating iron is just the opposite. The heating wire is wound around an iron pipe with a hole in the middle, and the inside and outside are insulated by mica sheets. The welding head is inserted in the middle hole, and the heat is transmitted from the outside to the welding head inside, which is called external heating type.

 

The two methods have their own advantages and disadvantages. The internal heating method can raise the temperature quickly and will not produce induced electricity. However, the heating wire has a short service life and the external heating method has a relatively long service life, but it is easy to produce induced electricity and damage the precise electronic components. Therefore, it is best to connect the soldering iron shell with a ground wire when welding the precise components. SMY-D30/SMY-D50/SMY-D80/SMY-D100 has different powers to meet your different work requirements.