How To Clean Flux Residue After Silver Soldering

Flush with lots of clean water to rinse away any residue.

How to clean flux residue after silver soldering. Care should be taken in. This will leave a while crystalline residue commensurate with the flux residue surrounding the SMT components. The brush should be flexible and soft so that it wont damage the sophisticated electrical components.

After soldering it is VERY important to neutralize and remove all flux residue from your solderingCJs Flux Removeris designed specifically to do this. If there is any chance of flux-contaminated solvent wicking into these areas flush them with fresh solvent. Removal is generally accomplished by thorough washing in warm detergent water or in hot water containing dilute hydrochloric acid followed by hot water rinse.

With the more aggressive flux types if not removed they will etch the copper over time making a weak point so wiping them off is a good idea. The binders form the bulk of the visible residue. One way to fix this problem is to lower the temperature when soldering.

Using a paint brush cleaner works for cleaning flux residue too. After soldering we using Vapor Degreaser process with RHO-TRON 225 AES-L to clean up the flux. Rosin mildly activated works best for the filthy surfaces and.

When I use flux such as for silver soldering brass or steel to copper I clean the completed joint with a long strip of rag which has been wet with hot water. For example if somebody uses the wrong flux or a solder paste that has not been properly stored or is past its expiration date white residues can result. Apply some CJs and using a soft to medium bristle brush or a clean soft rag scrub the project thoroughly.

Another option is the use of a vacuum to reduce boiling point of water. During the soldering process excess. I like to do this as it allows you to make a thorough inspection of the joint to ensure the solder has flowed completely around the circumference of the pipe and there is no pinholes.