What is the role of rosin in soldering iron
1. Increase the smoothness of soldering, it can make tin drops stick to the circuit board quickly during soldering; rosin can also remove oxides on the metal surface and assist the diffusion of tin
2. In terms of solder joints, it can connect parts without mechanical support; coordinate heat dissipation; and conduct electricity
3. You can tin the wire, because it is difficult to tin the wire if you don’t use rosin. First heat the soldering iron, then put the soldering iron in the rosin, take out the soldering iron, dip it in tin, and put it in the rosin. Then put the wire to be tinned in, so tinning is much easier.
4. Prevent oxidation. After melting, it floats on the surface of the solder to form an isolation layer, thus preventing the oxidation of the soldering surface.
