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Well I finally used my MIG wire for the 1st time on my HH187. WOW, what a difference in appearance. Nice, shiny clean bead. When I run my beads I get tall raised beads. I think I am moving to slow. I sped up a lil bit and turned down the wire feed and it seemed to improve quite a bit. Just seems like I am moving fast. I was running a bead on 1/8" angle. Voltage set on 5 and wire feed on 60 and turned down to 50 and sped up. I cut a piece of angle in half and just welded the joint on one side. Put it in a vise and knocked the hell out of it. After quite a few hits all it did was start to bend a lil bit. Didn't break. Do I need to keep my travel speed up to prevent the raised beads? Thx. I don't know if i'll ever use flux again. LOL
Reply:yepthis thing always tell me I don't have enough letters...GRRRAnything worth doing is worth doing RIGHT
Reply:Voltage controls bead contour if everything else is constant. Your speed is the one that makes the best looking bead. If you thing you are going fast, slow down and see how it looks. More volts = flatter bead. Too many volts = spatter not enough volts = stubbing. David Real world weldin. When I grow up I want to be a tig weldor.
Reply:Well if I slow down my travel speed the bead just raises up. My voltage only goes to 7 so I don't think that's it. What about my wire feed?
Reply:You stated you had a good looking bead that defeated the hammer and vise test, I'd say the settings were all right...if you want to change the profile of the bead while maintaining the same mechanical properties then you do it with travel speed. There are limits and exceptions to everything, but that is a general rule.Anything worth doing is worth doing RIGHT
Reply:Advice is good so far.Not recently experienced with short arc mig, but did a bunch with pulse spray and found that a forward push angle on the gun makes a flatter bead. But as I recall from reading short arc "theory", short arc is generally done with a drag angle, maybe to help increase penetration since it is somewhat a "cold process" and prone to lack of fusion (LOF) on thicker weld joints. But maybe try a push angle on the gun, along with the other suggestions here.
Reply:Yeah need to work on different techniques also. I have a hard time seeing what's going on.
Reply:I usually push between 15 and 25 degrees depending on the amount of penetration I am shooting for.Anything worth doing is worth doing RIGHT
Reply:Are you able to see the puddle or do you just go by feel when pushing?
Reply:I never mig blind...position yourself in front of the puddle and run it to you. If it's a long bead, learn how to toe shuffle your feet to keep moving ahead of it. I have terrible tinitus so I HAVE TO see the puddle as I'm running it.Anything worth doing is worth doing RIGHT |
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