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| | | | Joined: Jan 2007 Posts: 615 Shop Shark | | Shop Shark Joined: Jan 2007 Posts: 615 | I think there's applications for both.. but I just seem comfortable working from left to right, pulling the MIG bead..
Keith
Last edited by Slickriffs; 09/02/2008 6:07 PM.
| | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | i almost always go left to right and pull the bead. what do you do on a vertical weld? hopfully not lay on your side! just kidding, hr | | | | | Joined: Jul 2007 Posts: 224 'Bolter | | 'Bolter Joined: Jul 2007 Posts: 224 | i usually push a mig bead and pull a stick bead. with that said
its tempting to lay that gun over where you can see that big purty
bead but you get poor penetration. keep the gun as straight to the
work as possible. philip | | | | | Joined: Jan 2007 Posts: 79 Wrench Fetcher | | Wrench Fetcher Joined: Jan 2007 Posts: 79 | The direction of travel and speed will effect the heat of the weld. If you use the "drag" technique with the gun dragging away from the weld, it will be "cooler". If you are using the "push" technique with the gun pushing into the weld it will produce a "hotter" weld. So, if you were to start on the left side of a seam and with the gun leaning to the right at 45 degrees welding from left to right, this would be "dragging". If you were to start on the right side of the seam with the gun leaning to the right as before and welding left, to the left side of the panel, that would be "pushing" the weld. I find that when welding sheet metal if I have a problem with burning through, changing to the pull technique will help most of the time.
1949 "Heinz 57"
| | | | | Joined: Dec 2006 Posts: 113 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 113 | though I learned using the drag method,and that is what I am most comfortable with, I have been told that the proper method is to push for solid wire and drag for flux core (for slag, you drag). I personally have never used flux core so I can't speak to the effectiveness of that method. | | | | | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | i don't think i ever weld anything with my miller mig i worry about being to cool. i usually only use it for sheetmetal and body panels and if you hang around in one spot too long it will burn thru. if it's thick enough at all i will turn on the big hobart dc arc welder. i don't think i even tilt my arc welding electrode 45 deg let alone my mig gun. you will know if you are getting good penetration or not and adjust something accordingly, it's never a problem with the stuff i weld. i welded a piece of cast iron today and when i turned it over i couldn't even tell where the crack had been, which is very unusual for me and cast! but the last inch the heat got to it and it wanted to blow thru. this was not with my mig though, i was using arc with cast rod. if you try flux core you will prob hate it, i did. but i'm no welding expert and don't pretend to be. hr | | |
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