Drawn Arc

What is drawn arc stud welding?

In this welding process, a welding rectifier serves as a source of energy which provides continuous welding current and can be regulated in weld time and power. The welding time amounts to 0.1 - 2.0 seconds. Ceramic ferrules are usually used as auxiliary aids.

Stud tip is placed in contact with the workpiece	Stud lifts off the workpiece creating an electric arc	Stud is forced into the molten pool. Material solidifies and stud is welded

Where is drawn arc stud welding applied?

Owing to the increased weld penetration from approx. 1 - 3 mm, this method is mainly used for sheet metals with a minimum thickness of 2 mm. Drawn arc stud welding generates high-quality welds and is particularly suitable when high demands relevant to safety regulations are made on the welding quality. Application of this welding method has proven very successful in structural steel engineering, machine construction, shipbuilding, civil engineering, power plant and nuclear power plant construction, boiler construction, apparatus engineering, insulating engineering, reinforced pre-fabricated concrete construction etc.