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My very failed attempt at running a beat with my Oxy/Acetylene torch.  I have no idea what I'm doing wrong, but I get the weld density of a sponge.  Just what am I doing wrong?  Too much oxygen?
Reply:what type of material are you trying to weld?
Reply:porosityI will guess Vitamin Z poisoning if you are welding the same gold/red/green material as in the background.Opus
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Reply:Originally Posted by OPUS FERROporosityI will guess Vitamin Z poisoning if you are welding the same gold/red/green material as in the background.Opus
Reply:WTF is that?  Oxyfuel welding and I see what looks to be slag and chipping hammer divots?Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Originally Posted by MinnesotaDaveWTF is that?  Oxyfuel welding and I see what looks to be slag and chipping hammer divots?Dave J.
Reply:Originally Posted by MinnesotaDaveWTF is that?  Oxyfuel welding and I see what looks to be slag and chipping hammer divots?Dave J.
Reply:Ok, lets start at the beginning.Pics of your torch and both sets of gauges so we can see settings and the equip you are running.What filler rod are you using?  Note: do not say old rusty coat hanger....Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Originally Posted by MinnesotaDaveOk, lets start at the beginning.Pics of your torch and both sets of gauges so we can see settings and the equip you are running.What filler rod are you using?  Note: do not say old rusty coat hanger....Dave J.
Reply:No pic came through.What settings do you have on the regulators?Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Originally Posted by MinnesotaDaveNo pic came through.What settings do you have on the regulators?Dave J.
Reply:Notice your pics don't fit?  You need to resize and post smaller ones in the future.Pic of your torch tip?Here is a video to show you how to set the fuel mix.I recommend approx 4 psi on both to start with for welding.  See if you can get a good nuetral flame at these pressures - adjust a little if needed.[ame]http://www.youtube.com/watch?v=kPW06n-27FY[/ame]Dave J.Last edited by MinnesotaDave; 06-03-2013 at 01:00 AM.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:-_- WHy can't the board software resize them.  Anyhow.  I'll watch the video.  I was able to weld some aluminum using some 4043 flux coated rods.  I think I really screwed up the mix and the torch was just blowing oxygen into the puddle (used an Oxidizing Flame vs a Neutral Flame).Oh it's a #1 Tip
Reply:You are likely right.  Never tried to weld with an oxidizing flame, but it may explain the result you got.Pay close attention to the video as the flame goes from too much oxygen to too little.  It makes sense when you do it a couple times and will be easy to get a nuetral flame from then on. Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:Indeed.  I'm confused by the video, though.  It tells me to shut off the acetylene first and then the oxygen.  It seems when I do it that way it always pops.  I've also read that both are correct, so whatever.The flame I was using was most definitely oxidizing.  Which I understand is only good for cutting.  The video is really helpful because it shows exactly how to dial it in.
Reply:It seems I've read both ways as well over the years...Now that you see what a nuetral flame looks like, technique and practice are what remain.Let us know how it turns out Dave J.Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:porosityThe confusion of which valve to terminate first comes from when and how the pop occurs.Plasma cutting has largely supplanted O-A for general use to such a degree that even many professional welders don't have the O-A familiarity of yesteryear. .  Slow popping is usually a loose tip, or a bad tip seat. If popping more rapidly  -  up to machine gun speed  -  it is fuel starvation caused by inadequate Acetylene feed.The low pressure is either too low a setting at the regulator, or because  the bottle volume has dropped below its delivery capacity for the task at hand  -  e.g. small O-A welding vs a rose-bud  =  an empty bottle.The popping is pre-ignition; the concern being an internal fire that runs up the torch, hence flash-back arrestors.A small pop when terminating a torch presents little hazard because the fuel avenue has been turned off  -  literally blocked.The preference for Acetylene off first, is to prevent a stream of pure black smoke from polluting the air.  In a shop that may have a dozentorches operating at one time; it is an issue. It is considered the mark of a novice to turn the Oxygen off first; you will hear about it because you have become the focus of ridicule.  The trick is to dial the flame down to a minimum, then off.With practice you can terminate a torch without smoke, or a pop.Opus
Reply:Originally Posted by MinnesotaDaveOk, lets start at the beginning.Pics of your torch
Reply:Originally Posted by OPUS FERROIt is considered the mark of a novice to turn the Oxygen off first; you will hear about it because you have become the focus of ridicule.
Reply:You might want to start with a fresh piece of clean scrap each time you practice.....  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:Are you using stick electrodes with the O/A torch?
Reply:Originally Posted by Fnord5Are you using stick electrodes with the O/A torch?
Reply:Those are pretty small bottles. If you are running too large of a tip, you might be using up the available aceteleyne and be fuel starved/burning acetone. What size/brand/model torch and tip?
Reply:Originally Posted by DeuceTrinalThose are pretty small bottles. If you are running too large of a tip, you might be using up the available aceteleyne and be fuel starved/burning acetone. What size/brand/model torch and tip?My Victor book says a #1 tip flows 3-6 SCFH of acetylene, and should be used at 3-5 PSI on both gases. I'm guessing that's a B sized bottle, hard to hell for sure. They hold 40 CF, so 40/7 (or 40/10 according to some  for safety) shows you can safely draw  4-5.7 CFH from a B size tank. That assumes your tip isn't all reamed out and oversize by overzealous tip cleaning. You are on the edge of a B tank's capacity.For shutdown on the torch, oxygen first and gas second. That pop can throw soot down into the torch and get the valves etc dirty or clogged. Like Opus said, with practice they happen almost at the same time.
Reply:Originally Posted by DeuceTrinalMy Victor book says a #1 tip flows 3-6 SCFH of acetylene, and should be used at 3-5 PSI on both gases. I'm guessing that's a B sized bottle, hard to hell for sure. They hold 40 CF, so 40/7 (or 40/10 according to some  for safety) shows you can safely draw  4-5.7 CFH from a B size tank. That assumes your tip isn't all reamed out and oversize by overzealous tip cleaning. You are on the edge of a B tank's capacity.For shutdown on the torch, oxygen first and gas second. That pop can throw soot down into the torch and get the valves etc dirty or clogged. Like Opus said, with practice they happen almost at the same time.
Reply:RE:  O/A Torch Shutdown Procedure:1)  Follow torch manufacturer's recommended procedure2)  When in doubt turn off the Oxygen first!Read this:  http://weldingweb.com/vbb/showthread.php...etylene&page=2see post # 29.- MondoMember, AWSLincoln ProMIG 140Lincoln AC TombstoneCraftsman Lathe 12 x 24 c1935Atlas MFC Horizontal MillCraftsman Commercial Lathe 12 x 36 c1970- - - I'll just keep on keepin' on.
Reply:Originally Posted by MondoRE:  O/A Torch Shutdown Procedure:1)  Follow torch manufacturer's recommended procedure2)  When in doubt turn off the Oxygen first!Read this:  http://weldingweb.com/vbb/showthread.php...etylene&page=2see post # 29.- Mondo
Reply:Originally Posted by MinnesotaDaveGood post - now I know why I seem to remember reading it both ways before - because I did Dave J.