The best soldering flux for your project depends on many factors and characteristics. The addition of hydrogen to the plasma augments the removal efficiency by chemical mechanisms.Mechanical agitation is another possibility for disrupting the oxide layer. Some of the earliest known fluxes were carbonate of soda, potash, charcoal, coke, borax, [1] lime, [2] lead sulfide [3] and certain … /I think this new explanation is not clear at all. Therefore, I suggest going back to the original explanation.

In metallurgy, a flux (derived from Latin fluxus meaning "flow") is a chemical cleaning agent, flowing agent, or …

--My experience is that mostly only those who understand the chemistry involved in ceramics and glass understand actually what is happening chemically with flux in brazing, welding, soldering. ROL0, REM1 or ORH0.Some materials are very difficult to solder. Fluxes for brazing operate at significantly higher temperatures and are therefore mostly inorganic; the organic compounds tend to be of supplementary nature, e.g. They are used in both extractive metallurgy and metal joining.

An example is the group of fluxes containing Inorganic acids are highly corrosive to metals even at room temperature, which causes issues during storage, handling and applications.

True that such lists can be a bit open ended, but there are only so many in use. --Christopher Thomas 05:42, 1 December 2005 (UTC)

Some common fluxes are ammonium chloride or rosin, for soldering tin; hydrochloric acid and zinc chloride for galvanized iron and other zinc surfaces; ::Fair enough.

The activators are usually either acids, or compounds that release acids at elevated temperature.Salts are ionic in nature and can cause problems from metallic leaching or The activity of the activator generally increases with temperature, up to a certain value where activity ceases, either due to thermal decomposition or excessive volatilization. They are used in both extractive metallurgy and metal joining. Dr. Dmitri Kopeliovich Fluxes for melting aluminum are solid substances (commonly mixtures of chloride and fluoride salts) used in aluminum foundries in order to reduce the melt oxidation, minimize penetration of the atmospheric Hydrogen, absorb non-metallic inclusions suspended in the melt, keep the furnace/ladle wall clean from the built up oxides, …

Other materials used as fluxes are silica, dolomite, lime, borax, and fluorite.

Conversely, when solder "beads" on a surface is is clear that a proper soldered joint has not been achieved. Four characters (two letters, then one letter, and last a number) represent flux composition, flux activity, and whether activators include halides:Any combination is possible, e.g. Molecular Other reactive atmospheres are also in use. Thermal dissociation of ammonia yields an inexpensive mixture of hydrogen and nitrogen.Bombardment with atomic particle beams can remove surface layers at a rate of tens of nanometers per minute. The reaction product is usually soluble or at least dispersible in the molten vehicle. The fluxes lower the melting point of the oxidic materials, allowing them to fuse, and the molten litharge is reduced by the flour to extremely fine drops of lead……provided the joint is adequately fluxed. The most practical dissociation method is probably an electrical discharge. However the oxidation rate of the metals also increases with temperature.At high temperatures, copper oxide reacts with hydrogen chloride to water-soluble and mechanically weak copper chloride, and with rosin to salts of copper and abietic acid which is soluble in molten rosin.Some activators may also contain metal ions, capable of exchange reaction with the underlying metal; such fluxes aid soldering by chemically depositing a thin layer of easier solderable metal on the exposed base metal. I've ammended my edit and left out the mention of melting point. The introduction should be relatively easy to understand and use as little jargon as possible.



More active grades require thorough cleaning of the residues. The books I'd seen have suggested that the term is used this way outside of aluminum smelting, but didn't quote any references for that. Most commonly, it is used in metal joining and metallurgy.

riŋ ‚fləks] (metallurgy) A chemical substance which aids the flow of solder and serves to remove and prevent the formation of oxides on the pieces to be united.

In this respect they stand at the opposite pole from the medical profession, which systematically replaces common words with incomprehensible ones so as to exclude the layman.

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