pulse weld bead vs constant bead

[John71a]

Thanks, Zoama. I was worried that the posted 26 Volt max was right on the bottom edge for spray on 1/2" aluminum per the Miller guide.

Do you think the mig pulse would make a cleaner weld on slightly rusted or mill scale steel?

[zoama]

Thanks, Zoama. I was worried that the posted 26 Volt max was right on the bottom edge for spray on 1/2" aluminum per the Miller guide.

Do you think the mig pulse would make a cleaner weld on slightly rusted or mill scale steel?

The 250P will spray with ease. In testing on steel, I turned the volts and wire speed to maximum and it sprayed cleanly using 75/25 argon/c02.
I can't answer many questions on pulse due to limited experience and no formal training, but I can say that without pulse you can get clean welds through mill scale and light rust using s6 wire.
The only time I've used pulse was to weld a flowmaster muffler back together filling a gap.