Welding is a method of providing a high strength joint between components. Welding can be used on a wide variety of engineering materials, metals and non-metals.
A large amount of welding is done by manual techniques where an electric arc or a gas flame is used to melt the metal in the joint. The welder is in direct control of the process, making judgements that decide the quality of the finished weld.
There are four main manual welding processes:
- Manual Metal Arc (MMA)
- Metal Inert Gas/ Metal Active Gas (MIG/MAG)
- Tungsten Inert Gas (TIG)
- Oxyfuel Gas