soldering flux meaning in Hindi

Oleic acid is used as a soldering flux in stained glass work for joining lead came.
The only tools and materials needed are fine steel wool or emery cloth, non-acid soldering flux, lead-free solder and a propane torch.
Soldering flux will help to remove oxide; the more active the flux the better the cleaning, although acidic flux used on circuit boards and not carefully cleaned off will cause corrosion.

noun.

flux applied to surfaces that are to be joined by soldering; flux cleans the surfaces and results in a better bond