Many people think that if the set temperature is different from the actual temperature of the tip of the soldering iron tip, the performance of the soldering iron is defective or damaged, which is not the case. The difference between the set temperature and the actual temperature of the tip of the soldering iron tip is mainly affected by two factors:
■Size and shape of the tip of the iron tip
The temperature of the tip of the soldering iron tip will vary depending on the shape of the tip of the soldering iron tip. For example, the tip of the soldering iron tip of the 900M series. If you use a 900M-T-B soldering iron tip and replace it with a 900M-T-H soldering tip, even if the set temperature is unchanged, their actual temperature will be different. After measurement, their temperature difference can reach 20 ℃.
If the soldering work requires frequent replacement of the tip of the soldering iron tip with a different shape, it is necessary to use a soldering iron with a correction function and then a thermometer with a tip soldering tip. The method is to first put the tip of the soldering iron tip on the thermometer, and then read the number on the display. If there is a deviation from the set temperature, you can use the correction function of the soldering iron to adjust the soldering temperature to the set temperature.
■Loss of soldering iron tip and heating core
The heat of the tip of the soldering iron comes from the heating core. If there is an obstacle during the heat transfer process, the temperature of the tip of the soldering iron will decrease. If the heating core or the tip of the soldering iron tip is oxidized, the heat transfer efficiency will be reduced. Therefore, we must pay attention to the maintenance of the tip of the soldering iron head. In addition, the heat provided by the heating core purchased every time will have a slight deviation, so when the heating core is replaced, the temperature of the tip of the soldering iron tip will also vary.
Since the heating core and the tip of the soldering iron tip work for a period of time, oxides will be generated and the temperature of the tip of the soldering iron tip will change. Therefore, in order to ensure that there is still an accurate temperature for a long time, the temperature must be corrected regularly. When replacing the heating element or the tip of the soldering iron tip, due to the difference between the new and the old, it is necessary to correct it in order to have an accurate temperature.
When calibrating the temperature of the tip of the soldering iron tip, the temperature is generally corrected at a specific temperature, but if the temperature is adjusted to other temperatures after the calibration, the temperature will deviate. Some welding stations can keep this deviation at ± 10 Within ℃.