How to weld > Shielding gas
Pulsed arc MAG welding
Welding with a pulsed arc technique means that an arc can be attained with relatively low heat inputs.
This technique uses pulsed parameters with respect to an interaction between the current and the voltage values.
The main exceptions with pulsed arc compared to a spray arc technique are that:
- Thinner plate thicknesses can be welded using the pulsed arc technique. Even the thinnest plate thicknesses in the Hardox and Strenx range can be welded with the pulsed arc technique.
- The user can choose between different types of pulse types. Each of these kinds is related to optimization of a given situation, such as lowered levels of spatter during welding.
- Pulsed arc welding techniques can either increase or decrease the welding productivity. It depends of the type of pulse that is selected.
- Welding in is feasible in different types of positions
The development of different types of pulse arc techniques is significant. Consequently, the numbers of different pulse arc techniques increases in time.
Droplet transfer at pulse arc welding
The welding condition that is to be optimized determines if the pulse sequence will generate spray or short arc welding.
Each droplet transfer is generated by one or several pulse sequences in a row, see the illustration below.
Example of current/time appearance during pulsed arc welding. This sequence illustrates a spray arc droplet transfer that is generated by each pulse.
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