MIG/MAG WELDING: WHAT'S THE DIFFERENCE? FIND OUT WITH THE DINAMITEK GUIDE
Dinamitek presents the guide to MIG welding Mag
Mig-Mag Welding: The Dinamitek Guide
MIG/MAG welding: what are the differences between pulsed and double-pulsed?
Let's try to answer by providing some general food for thought.
MIG/MAG welding is gas-shielded metal arc welding.
The difference between MIG and MAG is the gas used to protect the welding pool.
MIG (Metal-arc Inert Gas) welding
MAG (Metal-arc Active Gas) welding
There are 3 basic ways of transferring the filler material to the weld pool in MIG/MAG welding.
These three modes are characterized by the combination of parameters used.
The parameters to set are: wire speed, current voltage and voltage.
The three transfer modes are:
- short circuit
- globular
- spray
Short circuit transfer is optimized using pulsed.
Let's analyze how the short circuit occurs.
In the short circuit, a power source is used that generates the bell of the unstable electric arc , meaning that the wire begins to melt as it approaches. The resulting ball can only enter the weld pool when the wire encounters the base metal, thus creating a short circuit.
In pulsed welding, as the wire approaches the material, a pulse occurs before contact occurs, detaching the filler metal so it can be transferred to the weld pool before short-circuiting. Pulsed welding, as mentioned above, allows for a more aesthetically pleasing weld, with a smooth and precise bead free of imperfections (such as "shoulder bumps").
So what is the difference between pulsed and double pulsed?
Double pulse is a function that allows you to work as if you had two wire feed speeds available, which periodically switch between them based on the welding progress. You have a base reference current and peaks at regular intervals . By correctly setting the machine, you can optimize welding by finding the optimal working mode.
Machine setup is a fundamental part of welding . Field experience is the best and most reliable way to find the solution that best meets the specific needs of the moment.
Double pulse welding is used for welding in specific positions and situations , when it's important to have less heat input, which translates into less deformation. This solution allows for aesthetically pleasing work.
In welding, it is well known that it is important to create not only welds that hold, but also aesthetically perfect ones.