Pulse welding

300jk · Oct 23, 2016

At work we have a miller millermatic 350p might welder. This welder has a pulse welding mode. I have been using it more lately in pulse mode. In this mode you only set the wire speed. It has an adjustment for arc length but I haven't messed with that. Seems to burn hotter and you can move quicker than regular mig mode. Has anyone else experimented with one of these ? Just wondering how this whole pulse thing works. It sounds weird too when your welding kinda like a bunch of angry bees buzzing.

Mike(NEOhio) · Oct 23, 2016

I'm not a welder but I spent my last years at Lincoln in the R&D lab. The way I understand it is pulse mode maintains a low background current and pulses to higher current than could normally be used. That gives a higher net heat input without burn through and allows higher travel speeds. It's mostly used robotic welding and on aluminum. But don't quote me.

mattwillson · Oct 23, 2016

It's a heat in, heat out deal...noisy as hell too. it works pretty good on old dirty aluminum to a degree. Are you runnin' a push pull with it?

Don-Wi · Oct 24, 2016

I ran the exact setup with .045 flux core and argon gas. Could really lay down some beautiful beads on the dirtiest of steel with it. More than once I had to take a break because my left glove was starting to smoke and was REALLY HOT. then I found the reflectors that go over the glove to help reflect the light/energy. Really made a difference. 2 foundry trim presses I welded together, one is in Michigan trimming cam shafts (second one they bought,I can almost guarantee if you drive just about anything with a typical gas engine, it's got a cam from this foundry.

I forget where the other one is, if it was one they sold to Mexico or a local foundry.

I had a hand in atleast a 1/2 dozen trim presses, a whole bunch of different tools including one that trimmed grouser pads for bobcat skid steers (one hit, ready for assembly) and others for brake calipers, hanger brackets, crankshafts, etc...

Sorry... got a little off topic there...

Great welder if you take care of it.

Donovan from Wisconsin

Donovan from Wisconsin

Donovan from Wisconsin

circus · Oct 24, 2016

Pulsing produces a stitch bead with good penetration vs a continuous cold bead with poor penetration on thin metal. Keeps the shielding gas flowing and easier on the equipment than triggering off on off on etc.

300jk · Oct 24, 2016

Thanks for all the responses. No push pull. Think I have a decent grasp on how it works. I have only done a few smaller projects with it since I am only in the shop when the weather won't let me on at a job on a piece of equipment. Maybe more this winter. I have also noticed how much warmer my gloves got when using it. Our company has a full time welder/fabricator who likes it a lot.

Pulse welding

300jk

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Mike(NEOhio)

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mattwillson

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Don-Wi

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circus

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300jk

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