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2. Flux (metallurgy) - Wikipedia

   en.wikipedia.org/wiki/Flux_(metallurgy)

   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. In metallurgy, a flux is a chemical reducing agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time.

3. Soldering - Wikipedia

   en.wikipedia.org/wiki/Soldering

   Properly done, the iron heats the parts to be connected, which in turn melt the solder, guaranteeing adequate heat in the joined parts for thorough wetting. If using solder wire with an embedded flux core, heating the solder first may cause the flux to evaporate before it cleans the surfaces being soldered.

4. Solder paste - Wikipedia

   en.wikipedia.org/wiki/Solder_paste

   The paste manufacturer will suggest a suitable reflow temperature profile to suit their individual paste. The main requirement is a gentle rise in temperature to prevent explosive expansion (which can cause "solder balling"), yet activate the flux. Thereafter, the solder melts. The time in this area is known as Time Above Liquidus. A reasonably ...

5. Reflow soldering - Wikipedia

   en.wikipedia.org/wiki/Reflow_soldering

   Reflow soldering is a process in which a solder paste (a sticky mixture of powdered solder and flux) is used to temporarily attach anywhere from one to thousands of tiny electrical components to their contact pads, after which the entire assembly is subjected to controlled heat. The solder paste reflows in a molten state, creating permanent ...

6. Wave soldering - Wikipedia

   en.wikipedia.org/wiki/Wave_soldering

   Flux in the wave soldering process has a primary and a secondary objective. The primary objective is to clean the components that are to be soldered, principally any oxide layers that may have formed. [3] There are two types of flux, corrosive and noncorrosive. Noncorrosive flux requires precleaning and is used when low acidity is required.

7. Rosin - Wikipedia

   en.wikipedia.org/wiki/Rosin

   In industry, rosin is a flux used in soldering. The lead-tin solder commonly used in electronics has 1 to 2% rosin by weight as a flux core, helping the molten metal flow and making a better connection by reducing the refractory solid oxide layer formed at the surface back to metal. It is frequently seen as a burnt or clear residue around new ...

8. Solder - Wikipedia

   en.wikipedia.org/wiki/Solder

   In contrast to using traditional bars or coiled wires of all-metal solder and manually applying flux to the parts being joined, much hand soldering since the mid-20th century has used flux-core solder. This is manufactured as a coiled wire of solder, with one or more continuous bodies of inorganic acid or rosin flux embedded lengthwise inside it.

9. Rework (electronics) - Wikipedia

   en.wikipedia.org/wiki/Rework_(electronics)

   Using a stencil for both the balls and the solder paste or flux, Using a BGA "preform" with embedded balls corresponding to the device pattern, or; Using semiautomated or fully automated machinery. For the PS3 and Xbox 360 mentioned above, the time is about 120 minutes if all goes well. [3]