Welding methods in AMU context: gas, arc, TIG, MIG and MAG

AMU courses in welding cover multiple methods because different tasks require different techniques. Understanding the strengths and limitations of methods is part of being a versatile welder.

§Gas welding

Gas welding uses a flame from fuel gas and oxygen. It provides good heat control and is used for thinner materials, heating and certain repairs. The method requires no power source and is therefore flexible in the field.

§Manual arc welding

Manual arc welding with coated electrode (MMA) is robust and works well outdoors because the coating itself forms protection over the weld pool. It is used a lot for construction and repair work and requires only a power source and electrodes.

§TIG welding

TIG uses a non-consumable tungsten electrode and a separate filler rod. The method produces very clean and controlled welds and is used where there are high demands on quality and appearance — e.g. on stainless steel and thinner materials.

§MIG og MAG

MIG and MAG are wire welding processes with high productivity. MIG uses inert shielding gas (typically for aluminium and stainless steel), while MAG uses active shielding gas (typically for unalloyed and low-alloyed steel). They are well-suited for batch and production work.

§Versatility as a welder

The skilled welder masters multiple methods and can choose the right one for the task. The AMU system makes it possible to build up competencies step by step and certify yourself in the methods you work with.