Correct selection method of electric soldering iron tip
It is very important to choose the correct size and shape of the soldering iron tip. Choosing the right soldering iron tip can make the work more efficient and increase the durability of the soldering iron tip. The size of the soldering iron tip is directly related to the heat capacity. The larger the soldering iron tip, the larger the heat capacity, and the smaller the soldering iron tip, the smaller the heat capacity. When performing continuous soldering, use a larger tip for less temperature drop. In addition, because the heat capacity of the large soldering iron tip is high, a relatively low temperature can be used during soldering, and the soldering iron tip is not easy to oxidize, which increases its life. Generally speaking, the size of the soldering iron tip is based on not affecting adjacent components. Choosing a geometry that allows adequate contact with the solder joint can improve soldering efficiency.
Six main indicators that lead-free special electric soldering iron should have
1. Particularly stable welding temperature, stability ≤ ± 2 ℃ (no load state);
2. Powerful heating element, electric heating power should be ≥ 70W;
3. The temperature rise function of extremely fast heating, normal welding within 10S after power on;
4. Temperature compensation for instantaneous heating, with ultra-fast heating function in seconds;
5. All accessories have passed environmental protection certification, and are equipped with lead-free long-life soldering tips;
6. Safe and reliable grounding wire device, grounding resistance ≤ 2Ω.
Precautions for the use of soldering iron (soldering iron soldering technology precautions)
(1) The newly purchased soldering iron must be dipped in a layer of tin before use (energize the soldering iron, and then use the tin bar to approach the tip of the soldering iron when the soldering iron is heated to a certain point), and the soldering iron head that has been used for a long time File bright, then turn on the electric heating to heat up, dip the tip of the soldering iron with a little rosin, and tin it when the rosin smokes, so that the surface of the tip of the soldering iron is first coated with a layer of tin.
(2) After using the soldering iron for a period of time, there may be tin scale on the tip of the soldering iron. We can lightly wipe it off with a damp cloth when the soldering iron is heated. If there are pits or oxidized blocks, use a fine-grained file to repair or directly replace the soldering iron tip.
(3) After the electric soldering iron is energized, the temperature is as high as 250 degrees Celsius. When not in use, it should be placed on the soldering iron stand, but when it is not used for a long time, the power should be cut off to prevent the high temperature from "burning" the soldering iron tip (oxidized). It is necessary to prevent the electric soldering iron from scalding other components, especially the power cord. If the insulation layer is burned by the soldering iron without paying attention, it will easily lead to safety accidents.
(4) Do not hit the soldering iron violently, so as not to shock and break the heating wire or lead wire inside the soldering iron and cause malfunction.
