Why is it difficult for my circuit board to get tin by hand soldering?

Your tin looks terrible. If there is lead, it should be about 30 degrees. I suggest a better metal material! !

The reason why the circuit board is not easy to tin is as follows:

1: Whether the flux is sprayed well or not, the uniformity of manual operation of flux is generally not very good. You can consider using an automatic flux sprayer for operation.

2. Whether the tin temperature is normal or not, too low or too high tin temperature will also affect the difficulty of tin plating on the circuit board.

3. Whether the soaking depth and soaking time are reasonable. If the temperature is too low and the soaking time is too short, it is easy not to tin.

4. Whether the material is oxidized, if the PCB and device are left for too long, it is easy to be oxidized, which will affect the effect.

In a word, manual immersion welding is gradually being replaced by machines. After all, there are too many uncontrollable factors in manual operation. In addition, the current labor cost is high, and the tin dipping station is not good for people's health. An automatic or fully automatic tin dipping machine can be considered.

DS300TS