How To Clean Flux After Soldering

After soldering we using Vapor Degreaser process with RHO-TRON 225 AES-L to clean up the flux.

How to clean flux after soldering. Keep board clean and tidy to make sure no impurities and finger marks. For Soldering on our production lines we using Kester Solder SN 63 Pb 37 with Flux 245 No clean in addition we using Kester Flux 959 977 2331-ZX. Then a banister brush is used to brush off contaminants at solder connection in ethanol solution.

The tinning process protects the tip from oxidation reduces wear and enhances heat transfer. To clean flux after soldering you can wash each panel as you finish it in warm soapy water. Do the same process for bottom side.

Cleaning the glass and solder with a flux remover and warm soapy water is a great start. Next use some low heat and gently swab the joint with the alcohol. I use a Kester 331 Solder.

Most Solders use a Rosin type flux. Check with the manufacturer for recommended solvents. If you choose to use a brush do it only on the solder.

The most common way to clean flux residues from a repair area is to saturate a cotton or foam swab with isopropyl alcohol or another cleaning solvent and rub it around the repair area. There are also several brands of chemical cleaners specifically designed to clean flux goop. You can also use IPA or a custom flux cleaning solvent available online.

I usually wipe joints with a water saturated rag after soldering. When you heat up your work for soldering and reach the temperature at which solder flows you are also creating oxides on the surface of your metal that mar its appearance. The longer the residues are left on the circuit board the higher is the possibility for corrosive damage on solder joints later in service and therefore poor electrical performance of the circuit board.