Do you need flux to solder?
Do you need to use flux when soldering?
When soldering circuit boards, or other electrical / electronic devices, yes – you need to use flux.
Fortunately, almost all solder for electronics use has an internal core of flux, so you usually don’t need to add more.
Why flux is used in soldering?
In soldering of metals, flux serves a threefold purpose: it removes any oxidized metal from the surfaces to be soldered, seals out air thus preventing further oxidation, and by facilitating amalgamation improves wetting characteristics of the liquid solder. Several types of flux are used in electronics.
Where do you put flux when soldering?
Flux core solder has flux in the center of the solder wire. Additional flux is unnecessary for most applications, but using additional flux still may make the solder easier to work with for some tasks. When selecting flux core solder, it is important to use rosin core solder for electrical applications.
What type of flux is used in electronics soldering?
The flux core of solder wires
Flux is designed to improve electrical contact and mechanical strength in solder joints. There are mainly two types of flux cores. Acid core and rosin core. Acid core is used for plumbing and rosin core is used for electronics.