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How Can I Stop Pool Roll?

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发表于 2021-8-31 23:43:43 | 显示全部楼层 |阅读模式
Sorry, I'm not really sure what it's called, but I tend to get a blob at the beginning of my runs very often and I'm hoping someone here may be able to help me fix it.Here's a pic of what I mean..See the blob I end up with on the right hand side of this horizontal run, the run went from right to left. Any idea how can I stop doing that?? I've tried lots of different things, but no success.Thanks for any help.
Reply:Start your puddle just ahead of where you really want the weld to start, once you get it going and the puddle forms a little big drag it back to where you intended on starting.  This also helps to blend in restarts in the middle of a weld bead.Have we all gone mad?
Reply:Thanks for your reply snoborder88. I tried that trick and worked then it didn't. Guess I just need to practice it a bit more.Thanks again.
Reply:Weld left to right and you won't have the blob on the rightEd Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Less stop starts will help.
Reply:it does that because its cold. try to get some heat  there. you may have to start with holding  the arc length a little long over the spot to heat it up without depositing metal..
Reply:Originally Posted by weldbeadit does that because its cold. try to get some heat  there. you may have to start with holding  the arc length a little long over the spot to heat it up without depositing metal..
Reply:Nope, as soon as you pull the trigger and put the wire on the work, you will be welding, mig cannot be used as any type of preheat for itself.Miller Dynasty 300dxSpeedglas 9002XMiller Spectrum 375 XtremeLincoln PowerMig 255xtLincoln PowerMig 140cMilwuakee Portaband
Reply:Originally Posted by weldbeadit does that because its cold. try to get some heat  there. you may have to start with holding  the arc length a little long over the spot to heat it up without depositing metal..
Reply:Originally Posted by sidthssNope, as soon as you pull the trigger and put the wire on the work, you will be welding, mig cannot be used as any type of preheat for itself.
Reply:Well I sort of solved this problem modifying my technique and they way I clamp the work. Firstly, I now clamp the work so the start point is higher than the end point, this seems to help the pool roll down hill. Secondly, I spend more time at the beginning of the run waiting for the pool and material to heat up so that the pool is hot and it runs a bit more freely. Seem to ge working at the moment :-)
Reply:I've seen that on my welds when I get too lazy to shorten an over-long stickout before I begin the weld or if I start a little too far away from the metal.  A lot of filler accumulates while I burn off the stickout to get it down to where it should be.  To make it worse, the long stickout reduces the heat as well.MillerMatic 252, HTP 221 w/cooler, Hypertherm PM45, Lincoln IdealArc 250 AC/DC"I'd like to believe as many true things and as few false things as possible"
Reply:Originally Posted by sn0border88Start your puddle just ahead of where you really want the weld to start, once you get it going and the puddle forms a little big drag it back to where you intended on starting.  This also helps to blend in restarts in the middle of a weld bead.
Reply:Originally Posted by LarryOThis is what i do sometimes.......
Reply:Originally Posted by sn0border88Not to sound like an *** or anything, but thats the way its done really, no need to change any setting or clamp differently.  Just start a little ahead, whip back, pause, then move fast until you get over the point where you first started (to avoid too much buildup) then continue like normal.
Reply:Well I'll give it a another try today, I've got a bit of work on. One big problem is the run is only about 1/2 - 3/4 of inch in length so I find I end up with build up somewhere. Thanks again.
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