Welding is a fabrication process that joins materials, usually metals
or thermoplastics, by causing coalescence. This is often done by melting
the workpieces and adding a filler material to form a pool of molten
material that cools to become a strong joint, but sometimes pressure
is used in conjunction with heat, or by itself, to produce the weld.
This is in contrast with soldering and brazing, which involve melting
a lower-melting-point material between the workpieces to form a bond
between them, without melting the workpieces.
Many different energy sources can be used for welding, including a gas
flame, an electric arc, a laser, an electron beam, friction, and ultrasound.
If you are looking to purchase a welding machine, please take a moment
to browse the selection on our site.