Pulsed MAG vs Reduce heating up

By Jacovelli Date 05-08-2003 17:57

Hi
I have worked with CO2/MAG welding mild steel (thickness plate between 2,0 and 4,5 mm).
Now I need to design and welding sheet metal structure with 1,5 mm thickness and I have had troubles with excessive heating up of the material
Can the pulsed MAG technologies reduce the heating up ?
If not, please, I´ll appreciate if you guide me through others options.
Thank you

By GRoberts (***)

Date 05-08-2003 19:14

The main options for welding thinner sheet with MIG/MAG are to use a suitable sized electrode and short circuit transfer, or pulsed. Pulsed welding requires a lot more expensive equipment though. The easiest thing to try would be to switch to a smaller diameter wire. .023" or .030" diameter wires should be able to weld 1.5mm sheet no problem. It also helps if you can position the weld to go vertical down instead of flat.

By Tim Buyle (**)

Date 05-12-2003 12:34

We did a test some time ago about welding tubes (1.5 mm wall thickness) into a tubesheet (6 mm wall thickness).

We tested :

* GMAW, solid wire 0.8 mm
* GMAW pulsed, solid wire 1.0 mm
* FCAW, metal cored wire, 1.0 mm

Best results, fastest en no distortion with FCAW !!!!
Pulse MAG is also an option ... but a very expensive one.
Try the metal cored wire ...