Soldering is a technique for joining metal parts using a material called solder. Unlike welding, soldering does not involve melting the joined components, but instead involves melting the filler material itself, which fills the space between the joined components. Once the solder has cooled, it hardens to form a durable and strong joint. The soldering process can vary depending on the type of metal to be soldered, the appropriate soldering materials used and the application requirements of the solder.
Different soldering techniques, such as soft soldering, hard soldering and solder welding, are used depending on the specific needs and specifications of the customer.