Welding is a joining process that produces coalescence of materials
(typically metals or thermoplastics) by
heating them to welding temperature, with or without the application of pressure or by the application of pressure alone, and
with or without the use of filler materials.
Most commonly, workpieces are welded by melting both of them and adding more molten metal or plastic to form a pool that cools
to form a strong joint. The energy to form the joint between metal workpieces most often comes from a flame (e.g. oxy-acetylene) or an electric arc, but welding by laser beam,
electron beam, ultrasound and
friction processes is well established. Energy for fusion welding of thermoplastics typically comes from direct contact with a heated tool or a hot gas.
Welding differs from soldering and brazing in that enough heat is applied to melt the materials to be joined. Soldering uses solder, a lower-melting-point material.
Welding Processes
Arc Welding Processes
Gas welding
Resistance Welding
Energy Beam Welding
Solid State Welding
Brazing and Soldering
- Block Brazing
- Diffusion Brazing
- Dip Brazing
- Exothermic Brazing
- Flow Brazing
- Furnace Brazing
- Induction Brazing
- Infrared Brazing
- Resistance Brazing
- Torch Brazing
- Twin Carbon Arc Brazing
- Dip Soldering
- Furnace Soldering
- Induction Soldering
- Infrared Soldering
- Iron Soldering
- Resistance Soldering
- Torch Soldering
- Ultrasonic Soldering
- Wave Soldering
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