Forrasztóanyag

Forrasztóanyag, commonly known as solder, is a fusible metal alloy used to join two metal surfaces together. It is typically composed of tin and lead, although lead-free alternatives are increasingly common due to environmental and health concerns. Other elements like silver, copper, and antimony can be added to modify the properties of the solder, such as its melting point, strength, and conductivity.

The process of soldering involves heating the forrasztóanyag until it melts, then applying it to the joint between the two pieces of metal. The molten solder flows into the gap and, upon cooling, solidifies to create a strong electrical and mechanical bond. The surfaces to be joined are usually cleaned and treated with a flux, a chemical cleaning agent that removes oxides and prevents further oxidation during the heating process, ensuring good solder flow and adhesion.

Forrasztóanyag has a lower melting point than the base metals being joined, which is crucial for the soldering process. This allows the solder to melt and flow without melting the surrounding components. The specific composition of the forrasztóanyag determines its melting range, which is important for selecting the appropriate solder for a given application. Common applications include electronics assembly, plumbing, and jewelry making. Lead-free forrasztóanyag often has a higher melting point than traditional lead-based solder.