Dip soldering

It is one of the cheapest methods to solder and is extensively used in the small scale industries of developing countries .

A PCB with mounted components is dipped manually into the tank so that the molten solder sticks to the exposed metallic areas of the board.

There are many types of solders, each used for different applications: The molten bath can be any suitable filler metal, but the selection is usually confined to the lower melting point elements.

This process is generally limited to all-metal work pieces, although other materials, such as circuit boards can also tolerate momentary contact with the hot molten solder without damage.

Usually the work-holding device is custom made for each respective workpiece for either manual or automated dipping.

Titanium, magnesium, cast irons, steels, ceramics, and graphites are hard to solder.