burning bars?

Tue, 31 Aug 2021 14:48:52 GMT

go to see Welding Machine for burning bars?

has anyone ever used one or seen one in person cutting before?i use oxy fuel daily and these burning bars make a oxy torch look like a BIC lighter compared  i would think that they are proly only used for the BIGGER jobs and thats why i never seen them around before until i was stroling around the internet and came upon this movie.http://www.weldingtheater.com/VideoN...1_uem.flv.htmlENJOYhave a good day4runnin
Reply:I've used them. They are more controllable than they may seem.Especially useful for extracting stuck pins, even smaller ones, such as 1.25 inch diameter.
Reply:ive never seen or used one but it kinda looks like oxygen lance cutting to me...
Replyenrep:  do you know how small the burning tubes are made, and what the internal wires are  made of? I would guess some aluminum alloy, as that would produce much heat, but I suppose Magnesium might be added to some degree to get more heat without having too much Mag oxide which is too hard to keep molten.Do they just look like a pipe stuffed with wire?I think they work well for such things as bank vaults which are thick and made of steels which don't burn with oxy-acetylene easily, as stainless wouldn't. They also 'melt' concrete, I think.
Reply:We use one at work quite often allbeit a smaller version for removing king pins and similar, it's called an exothermic torch.Ours comes in a suitcase size box with the hose, leads and ground clamp. In the video they use a torch to start it going we use a battery, once the rod starts burning it's kept going by the oxygen fed thru the wires. As we were saying at work the other day, it can make you an a**hole or a hero as once it starts to burn there's not a whole lot of control over direction. If you start off crooked, that's the way you keep going. Another thing is if there's a bolt hole thru the pin it'll sometimes go off sideways and follow the hole.It's a real bitch to not get burnt with it too as the best way to make sure you're straight is to stand directly behind it, which, oddly enough is where the melted material comes out :-).As far as rod sizes, all I've ever used with ours is 1/4" and 3/8"....Mike
Reply:I have them and the stinger that holds them.  I used to just stick a hose on the end and hook it to my torches.   It will burn a hole in anything.  1 box 25 3/8" rods.....$100.00 +DavidReal world weldin.  When I grow up I want to be a tig weldor.
Reply:Originally Posted by Oldiron2Denrep:  do you know how small the burning tubes are made, and what the internal wires are  made of?...
Reply:Originally Posted by Oldiron2Denrep:  do you know how small the burning tubes are made, and what the internal wires are  made of? I would guess some aluminum alloy, as that would produce much heat, but I suppose Magnesium might be added to some degree to get more heat without having too much Mag oxide which is too hard to keep molten.Do they just look like a pipe stuffed with wire?I think they work well for such things as bank vaults which are thick and made of steels which don't burn with oxy-acetylene easily, as stainless wouldn't. They also 'melt' concrete, I think.
Reply:I have got one here, thats a nasty beast when it's lit and talk about sparks flying EVERYWHERE
Reply:Ok, I really like Carbon-Arc. I love arcing stuff apart. But I had never seen this. Oh man. I NEED some of that stuff. That pin that was stuck in that shaft could have been a real head scratcher. That was cool!Yup
Reply:those things work very well  stuck pins and such but look out if the pin has a grease hole in it hypertherm powermax 900 : miller 30a spoolgun ranger 305g lincoln ln-25more tools than a tool truck
Reply:We use them for underwater cutting in the comercial dive industry. As said they will cut thru anything  concrete, steel, bronze, you name it. The underwater rods look like a fiberglass antenna that are stuffed with tig rods.
Reply:Originally Posted by rookiewelderthose things work very well  stuck pins and such but look out if the pin has a grease hole in it
Reply:I sent another stubborn one to pin happy-land this week.Here's the pics:Attachment 23651Attachment 23652Attachment 23653Attachment 23654Hey - Are the pics too large, or do they open too slow?Last edited by denrep; 10-19-2010 at 11:35 PM.
Replyenrep - Have you ever tried pre-heating  the pin first with a rose bud then using the lance on the preheated pin?  I had always tired it from a cold start and as I think about putting heat in the pin may work.Charlie
Reply:Originally Posted by 59halfstepDenrep - Have you ever tried pre-heating  the pin first with a rose bud then using the lance on the preheated pin?...
Reply:Originally Posted by denrepOr are you thinking that preheat might reduce the inferno and volcano effect?Once a pin is pierced there's usually no fight getting it out; due to a combination of heat and shrinkage and loss of the pin's center mass. With Slice rods, piercing from a cold start doesn't seem to be an issue either.Before slice rods, I would sometimes heat a pin and then bury a torch into it with the oxygen blasting; this would often sacrifice the torch tip while burning the pin.Good Luck
Reply:Originally Posted by 59halfstepYes preheat to reduce the volcano effect.  Have you tried this?  Are your slice rods the same as what I was always calling a lance?  I would do well after I finally got to pierce the pin completely through.
Reply:Arcair sells them as Slice rods.Disclaimer; "I am just an a$$hole welder, don't take it personally ."