How much do you know about the definition, function and application of solder paste?

Solder paste is a type of soldering material used for surface mounting of electronic printed circuit boards,It has been widely used in electronic manufacturing,By definition, flux paste is a paste-like chemical substance that plays two main roles in the welding process: "removing oxides" and "reducing the surface tension of the material to be welded". Now, JJY solder Paste Manufacturer will introduce other functions and performances:

The functional components of flux include: matrix, demolding agent and surfactant.

The matrix is the main component of the flux, controlling its melting point. After melting, it covers the surface of the solder joint, playing a role in isolating air. At the same time, it is also the solvent for other functional components.

Demolding agents remove, break or loosen the surface oxide film of the base material through physical and chemical processes, allowing the molten filler metal to wet the fresh surface of the base material.

Surfactants can further reduce the interfacial tension between the molten filler metal and the base metal, promoting better spreading of the molten filler metal on the surface of the base metal.

The main function of flux:

(1During the brazing process, the oxides on the surface of the base metal and the liquid brazing filler metal are removed to create conditions for the spreading of the liquid brazing filler metal.

(2It is covered with a thin layer of liquid on the surface of the base metal and the filler metal to isolate air and provide protection.

(3It plays an interfacial active role and improves the wetting and spreading performance of the liquid filler metal on the surface of the base material.

The above is what I have explained to you allFlux pasteSome of its functions and roles can be learned about by everyone. If you want to know more about soldering, please keep following JJY Solder Paste Factory. Let's exchange ideas together.