Flux (metallurgy)
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In metallurgy, a flux is a chemical reducing agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time. They are used in both extractive metallurgy and metal joining.
Rosin used as flux for soldering
A flux pen used for electronics rework
Multicore solder containing flux
Wire freshly coated with solder, held above molten rosin flux
Rosin
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Rosin, also known as colophony or Greek pitch, is a resinous material obtained from pine trees and other plants, mostly conifers. The primary components of rosin are diterpenoids, i.e., C20 carboxylic
Flux (metallurgy)
…weight, boiling off during the preheat phase, is usually used to aid application. Common fluxes are ammonium chloride or resin acids (contained in rosin) for soldering copper and tin; hydrochloric acid and zinc chloride for soldering galvanized iron (and other zinc surfaces); and borax for brazing…
A piece of rosin at Mimizan Heritage House, France
Pharmaceutical rosin
An etching plate covered with powder resin
A cake of rosin, made for use by violinists to rub on the violin bow