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Hobbyist problem with cutting with gas

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发表于 2021-8-31 22:58:57 | 显示全部楼层 |阅读模式
Folks,I'm a hobbyist with a Victor oxyacetylene rig. Often, when cutting even 3/16" steel, the molten steel reforms behind the cut; I have to go back and cut it again. It seems to me the steel should just drop out of the cut.This happens even when cutting with the steel parallel to the floor.Any insight?Thanks,Jack
Reply:Jack either move faster, or turn you heat way down.Don’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Originally Posted by CEPJack either move faster, or turn you heat way down.
Reply:How clean is the inside of the cutting hole on the tip? One little piece of slag stuck on the edge of the hole will make for poor cut quality.                                    MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:You should get a copy of the cutting tip chart that will have tip #, cutting thickness range , oxy setting and acetylene settings. Then its up to you to keep the tip clean and practice on your cutting speed.
Reply:Thanks, folks.I'm running a #0 tip and set both gasses to about 5 PSI. I'll try going faster and see if that helps.Jack
Reply:Originally Posted by jackganssleThanks, folks.I'm running a #0 tip and set both gasses to about 5 PSI. I'll try going faster and see if that helps.Jack
Reply:Jack You need to read thru this thread and look at some of the videos Irish Fixit did on OA cutting.http://weldingweb.com/vbb/showthread.php?t=63275.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:Pointing your torch in the direction of travel helps a lot too, especially on thin metal.
Reply:I read your post and a few replies so if I repeat someone else answer I'm sorry......When you select a cutting tip it has a min. max. suggestion along with it......Too small or too large a tip will create an issue...also when you adjust the flame I turn the Acet.on more than needed to keep the soot down, adjust it till the black soot just stops and open the OXY till the feather just goes away and you have  nice blue cones....Set pressures to torch manuf specs.......  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:While tip size has a lot to do with gas consumption, and available heat, you can cut thin stuff with a large tip.  You just have to put a steep angle on the torch, blowing the slag ahead of the cut, and really, I MEAN REALLY, scoot.Thin stuff is all about speed without losing your cut.  It'll come with practice."Any day above ground is a good day"http://www.farmersamm.com/
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