|
|
i only been using my TIG for a few days now. and although my beads arnt the prettiest. i wanted to try something thats not flat. any tips here?like around exhaust piping or a header pipe to a flange for example.Lincoln Square Wave 175 TIGLincoln 110v flux core welder (my 1st)Clarke 180EN MIG
Reply:Assuming that you will be welding either on the car or on a jig where you won't be able to roll the tubing you will have to be good at out of postion welds. Keep practicing on flat material in all positions. When you get good at it practice on scraps of tubing. You might want to take on a few simpler projects before tackling a set of headers. Thin metal such as headers is somewhat harder than 1/8-1/4 inch meterial. Header will not test your welding skills as much as they will test your fitting skills.
Reply:im practicing on a exhaust tubing you can get from autozone, or anything similar. im not actually trying anything just yet. flanges are exspensive to just go for it. i have been practicing mainly on 14 gauge metal butt joints, and T joints. and a few 11 gauge sheets also. the tubing is thinner than both. but i didnt notice it being any harder. the first try i ran it a little hot. but i corrected that. should i try welding towards me from back to front, or a right to left? (i hold the torch with my right hand). but this probley comes to personal preference...anyone have a video of someone TIGing on some tubing? that might helpLincoln Square Wave 175 TIGLincoln 110v flux core welder (my 1st)Clarke 180EN MIG
Reply:Can you use the "walking the cup" technique on smaller diameter pipe, like 2-3" in diameter? Although I think I've read some here calling that method a "crutch"....
Reply:You can walk the cup on whatever you want, but it's designed more for a pipe/plate groove weld than to be walked over flat tubing. If it's a "crutch", then there are a LOT of disabled pipe welders out there.If you're right handed and holding the torch in your right hand, you push the torch from right to left and add filler from the left side. If you have to, you can rotate this any way you want, as long as it still follows the above path, i.e you don't want to pull/drag the torch and add filler from the backside. Sometimes you will have no choice but to weld from odd angles.Make sure you grind off the aluminized coating before you TIG on exhaust tubing. A flap/sanding disc works best.
Reply:Supe,IMHO, leave the aluminized coating on the steel. That small amount of aluminum acts as a deoxidizer to the iron oxide present in the steel. Actually stabilized the weld.Regards, KbnitI r 2 a perfessional
Reply:Originally Posted by turboguyCan you use the "walking the cup" technique on smaller diameter pipe, like 2-3" in diameter? Although I think I've read some here calling that method a "crutch"....
Reply:Originally Posted by hotrodderLike pulse it can become a crutch IF freehanding isn't learnt properly first. It's just another technique, sometimes it offers advantages others there's not enough room and freehanding is the best/only option
Reply:Short answer... Don't get caught by surprise!Before striking an arc do a 'dry run' if the welds in an awkward position- make sure you can stay stable/comfortable and you've room to move without your mask etc hitting obstaclesAs for practice, just keep pushing yourself- once you're comfortable welding pipe in the 5G position for example do it again with the pipe 6" or less off the floor
Reply:Good advice in here!
Reply:ok, in class. i dont hear the term "walking the cup"... what is that? dragging the cup on the material?i have seen people do that with a short tungsten. but the angle you hold the torch at seemed a little bit bad to me. is that walking the cup? if not, can someone explain it to me?Lincoln Square Wave 175 TIGLincoln 110v flux core welder (my 1st)Clarke 180EN MIG
Reply:search the forum for the 'walking the cup'. This was covered recently and someone posted video of it
Reply:i found a video of someone doing autogenous welds, no dipping....hand behiiind his back..
Reply:Walking the cup is dragging it on the surface to steady yourself. And since stickout is infinetyly adjustable, so is the torch angle it defines. I spent 3 hours this week trying to learn open butt, vertical up. I took what I thought was an 'OK' coupon to my instructor. He asked me if I was walking the cup (he'd shown me earlier on a fillet weld). I said no, I didn't think you could walk the cup on a flat surface (directly on the HOT bead). He looked a me with that experienced look and grinned. I spent the next two hours figuring out that I only needed 1/16" stickout in that position to keep from bumping my tungsten into the puddle, without a 45* torch angle. Maybe next week I'll pass his critique. I had always thought that the more stickout I had, the easier it would be to see. And maybe it is, but it's also easier to stuff the the tungsten into the puddle. It's why I'm in class, to get better.Last edited by Craig in Denver; 09-13-2008 at 01:02 AM.9-11-2001......We Will Never ForgetRetired desk jockey. Hobby weldor with a little training. Craftsman O/A---Flat, Vert, Ovhd, Horz. Miller Syncrowave 250
Reply:This is the post i was talking about, http://weldingweb.com/showpost.php?p=202504&postcount=9. I think the other video is in the same thread but Gaustins vids show exactly what's going onForgot to mention in my previous post about tricky/out of position welding that learning to weld with BOTH hands makes life much easier. A real sod of a weld for a right hander is often pretty straightforward for a cackhander so if you can become ambidextrous...
Reply:Originally Posted by hotrodderForgot to mention in my previous post about tricky/out of position welding that learning to weld with BOTH hands makes life much easier. A real sod of a weld for a right hander is often pretty straightforward for a cackhander so if you can become ambidextrous...
Reply:It gets really interesting when you need a mirror to see what you're doing An old 'gold lens' works better than a real mirror. Re working barrels are a right PITA but nothing compared to what the 'boiler rats' have to deal with- those guys are skilled!
Reply:Originally Posted by turboguyCan you use the "walking the cup" technique on smaller diameter pipe, like 2-3" in diameter? Although I think I've read some here calling that method a "crutch"....
Reply:[QUOTE=hotrodder;212784]It gets really interesting when you need a mirror to see what you're doing An old 'gold lens' works better than a real mirror. Re working barrels are a right PITA but nothing compared to what the 'boiler rats' have to deal with- those guys are skilled
发表于 2021-8-31 23:55:56