Juottoseokset

Juottoseokset, commonly known as solder, are fusible metal alloys used to join two metal workpieces together by melting and flowing into the gap between them. The solidified alloy creates a strong electrical and thermal bond. Solder is typically made from a mixture of tin and lead, though lead-free alternatives are increasingly used due to environmental and health concerns. Other common alloying elements include silver, copper, antimony, and bismuth, which are added to modify the melting point, strength, and wetting properties of the solder.

The process of joining metals with solder is called soldering. It requires heating the base metals and the solder to a temperature above the solder's melting point. A flux is usually applied to the surfaces to be joined before soldering. The flux cleans the surfaces by removing oxides and other contaminants, and it also prevents further oxidation during the heating process, allowing the molten solder to wet and adhere properly to the base metals.

Soldering is a widely used technique in electronics for connecting components to printed circuit boards, as well as in plumbing for joining pipes and in various manufacturing and repair applications. The choice of solder alloy depends on the specific application, considering factors such as the melting temperature, required joint strength, electrical conductivity, and cost. Lead-free solders often have higher melting points and may require different fluxes and soldering techniques compared to traditional lead-based solders.