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hot pass GMAW uphill

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发表于 2021-8-31 22:43:27 | 显示全部楼层 |阅读模式
17.9v 243ish wire speed hot pass GMAW uphill not sure the gas were using in school.  3/32 in plates to form a tee. I know its kinda high in the middle but what do yall thunk besides that?  Im completely open to critisim
Reply:Apparently the picture came in sideways lol quarter tutn up(left) is what its supposed to look like
Reply:Looks like you aren't holding the sides long enough, and aren't passing thru the center fast enough. I see what looks like undercut on what in that picture is the upper toe. Poor quality blurry and dark pict won't tell me anything about the bottom toe. I'd also prefer to se your motions tightened up some. I'd like to see 2-3 times as many side to side motions as I see right now. That would also help cut down the time you need to pause on the sides to fill and help flatten the bead, assuming you maintain your existing vertical travel speed.17.9, 243 is a bit faster than I usually set the machines for at school on 1/8" plate using .035 wire and 92/8 argon Co2. I find 17.5 and about 175-185 on the feeder works well..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:Yeah i kinda figured i was going to slow in the middle but ill work on tightening it up and pausing longer. Sorry bout the crap picture but i have to use the font facing camera regular side one with flash has a crack in it. Ill post another one monday when i go back to school. If i can get it all tightened up CCONSISTANTLY imma shoot for my 3G cert. Thanks for the reply btw. Im ALWAYS trying to improve my craft. As my dad used to say "just good enough is never good enough"
Reply:Running vertical up well is all about learning to read the puddle. Very few ever manage to do a good job doing "timing patterns".To teach this I do a super exaggerated weave and tell the student to watch as a weld, both the arc and the puddle. When I pause at each side, I wait just long enough for the puddle to catch up to the arc, then I'm headed back across to the other side to repeat.  If they say they can see that, then I'll shift to T joints and again do a super wide weave and see if they can pick things up. If so, then I'll do a weave 1/2 that size and see if they can still see it. At some point they loose what I'm doing. Then I'll run a "stringer" at full speed, basically doing the same exact thing, but now my side to side motion is barely a wiggle. I'm over just long enough to see the edge fill, then I've slipped over to do the same thing on the opposite side, maybe the wire thickness or two over.It's all about watching what the puddle is doing..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:And thats pretty much exactly what i was going my timing cutting across needs to be fine tuned i try to watch the "tadpole" as i call it. but now that you say something about pausing longer on the sides it makes alot more since because about halfway up i see the weld pool isnt streaking like its supposed to its more of a ball.  But ill definitely work on all that.  Thanks for the advice again
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