Soldering methods are divided based on different aspects (according to DIN 8505). People differentiate between soft soldering and hard soldering.
Flame soldering is a thermal joining process for metallic materials that are connected with a solder during this method.
Furnace brazing is a soldering method in which the parts to be joined are heated in an oven with the brazing solder inside, and which is preferably used for hard soldering.
Hand soldering is the easiest and most common soldering method in electronic engineering.
During the process of electrical resistance soldering, the parts to be joined are pressed together with tongs or welding heads, and by supplying electricity, the solder is melted electrically at the contact points between the components.