What's going on when lead solder paste suddenly starts smoking during soldering?

In the electronics industry, I believe many people will encounter this kind of problem when using itThere is lead solder pasteDuring the welding process, this phenomenon always occurs: there is a "smoking" phenomenon. What's the problem with this? The following solder paste manufacturer will analyze it:

There are generally several reasons for this situation to occur:

1During reflow soldering, the furnace temperature was too high, causing the solder paste to overheat and produce "lead smoke".

Solution: Appropriately reduce the furnace temperature

2During the solder paste printing process, impurities were mixed in. When passing through the furnace, the impurities melted, generating smoke.

Solution: Make sure to clean all impurities and dust thoroughly during printing.

3There is too much flux in the solder paste. When passing through the furnace, the flux melts and produces smoke.

Solution: Require the manufacturer to improve the quality of leaded solder paste.

The above are the three reasons why lead-containing solder paste may smoke during the soldering process. If you have any additional information, please feel free to discuss it together. For those who want to know more about solder paste, solder paste, low-temperature solder paste, solder wire, and solder bar, please feel free to consult Shenzhen JJY Industrial Technology Co., Ltd. and let's learn and grow together!