Can you do this? Steady hand...

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I tried and failed miserably on a scrap one I had...Don't know when you would ever need to but it looks cool, like an art piece or something.Miller Dynasty 200Millermatic 211Instagram?.... find me @ WELD_MEDIC
Reply:I'd love to try it. I would do it with pulse and no filler.Torchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:I did that on jet boat impellers at the shop I worked in. I built them up, then the machinest turned them down to original specs. We could rebuild impellers for half the cost of new.Dynasty 200DXPassport plus w/ spoolmate 100victor 315c oxy/(act and prop)Miller digital elitemilwaukee power tools
Reply:Yep I could do that, sharp tungsten and it would be no problem. There is not much radius to move around so it would be easy.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:Originally Posted by tig_21I tried and failed miserably on a scrap one I had...Don't know when you would ever need to but it looks cool, like an art piece or something.
Reply:Hell, I could do better than that on my buzzbox with some 6011.   <------ (yeaaaah right!) Lincoln Power Mig 216Lincoln AC/DC-225/125Miller  625 X-Treme PlasmaMiller 211 Forney 95FI-A 301HF 91110Victor Journeyman O/PMilwaukee DaytonMakita  Baileigh NRA Life Member
Reply:Originally Posted by GambleI'd love to try it. I would do it with pulse and no filler.
Reply:Originally Posted by Showdog75Why weld at all if your not gonna add filler? This is clearly edge build up to be machined back in spec. Not hard to do, clean material/filler and steady hand. I use to do it with Stellite 6 and 12. I'd weld the I.d.'s of rotor housings and the o.d. of the rotors. Sometimes as much as 120+lbs of Stellite. That was with tig as well. Back to the no filler comment, not a good habit to develop. Some aluminum is crack prone with no filler.
Reply:I would like to know the prep behind this piece. Also, the filler I don't know if they would use 4043 on this. The prep I did on the one I tried was glass bead blasting, wire brush, and then scotch bright to polish it up. I thought it was very clean but when I welded it, it seemed dirty. I'm wondering if I should have preheated it first even though the fins were fairly thin material. What amazes me is the color and how shiny it is...especially for cast material.Miller Dynasty 200Millermatic 211Instagram?.... find me @ WELD_MEDIC
Reply:Originally Posted by SquirmyPugYep I could do that, sharp tungsten and it would be no problem. There is not much radius to move around so it would be easy.
Reply:Originally Posted by BurpeeWere you at a nice bench sitting in an adjustable height stool and resting both arms in front of the work piece ?Nobody can do that standing in front of a redneck bench on top of an extension cord and 5 lbs of cutoffs.Yeah. I could do it. Gimme an hour to create the "where" it gets done.Stool, lighting, lens sterilization, arm rest pads(sand bags), careful adjustments and cleaning and ZZZZZZZZT ! OH. After a couple of stiff dwinkz too.
Reply:Originally Posted by tig_21I would like to know the prep behind this piece. Also, the filler I don't know if they would use 4043 on this. The prep I did on the one I tried was glass bead blasting, wire brush, and then scotch bright to polish it up. I thought it was very clean but when I welded it, it seemed dirty. I'm wondering if I should have preheated it first even though the fins were fairly thin material. What amazes me is the color and how shiny it is...especially for cast material.
Reply:Originally Posted by zankThat's titanium.
Reply:Looks like titanium to me. I certainly could be wrong, but the color and bead appearance look like titanium. A lot of those impellers are 6/4. And unless my eyes are playing tricks, I can see the faintest light straw color adjacent to the weld.
Reply:But now you've got me curious. Do you have a link to where it was posted originally?
Reply:Originally Posted by zankBut now you've got me curious. Do you have a link to where it was posted originally?
Reply:I think I could do that no problem. Easy-Peasy. Piece of cake... Of course, as SuperArc knows, I thought i could hover a helicopter first time out just because I had so many hours in a fixed wing. NOT!!!
Reply:I can't even go pee without getting it on the floorArcon Workhorse 300MSPowcon 400SMTPowcon SM400 x 2Powcon SM3001968 SA200 Redface1978 SA250 DieselMiller Super 32P FeederPre 1927 American 14" High Duty LatheK&T Milwaukee 2H Horizontal MillBryan
Reply:Originally Posted by zankBut now you've got me curious. Do you have a link to where it was posted originally?
Reply:My son's first welding job was running beads like that on the tips of worn Inconel turbine blades. He'd have to stack several rows, one on top of each other.  Too little and the blade might not be reweldable.  Too much and the grinder guys would get mad. He hadn't even finished his TIG class at school."USMCPOP" First-born son: KIA  Iraq 1/26/05Syncrowave 250 w/ Coolmate 3Dialarc 250, Idealarc 250SP-175 +Firepower TIG 160S (gave the TA 161 STL to the son)Lincwelder AC180C (1952)Victor & Smith O/A torchesMiller spot welder
Reply:Child's Play....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Originally Posted by zapsterChild's Play....zap!
Reply:Originally Posted by weldermikeLike taking candy from a baby!
Reply:I've seen this years ago posted somewhere by the guy that did the work.It is ti and it is fairly big as well. I believe he said the wheel is 2 feet in diameter or something. Initial cost of the wheel was like $100K+.
Reply:Originally Posted by VPTI've seen this years ago posted somewhere by the guy that did the work.It is ti and it is fairly big as well. I believe he said the wheel is 2 feet in diameter or something. Initial cost of the wheel was like $100K+.I still stand by what I said in my post. Don't know that I would WANT to weld on a $100k part though.Airco Ac/Dc 300 HeliwelderMillerMatic 200 (stolen)Miller Maxstar 150STLMiller AEAD200LE (welding and generating power) Hobart MIG
Reply:I'm with Terry, I'd say it was welded in a chamber.  To clean not to have been.
Reply:Originally Posted by VPTI've seen this years ago posted somewhere by the guy that did the work.It is ti and it is fairly big as well. I believe he said the wheel is 2 feet in diameter or something. Initial cost of the wheel was like $100K+.
Reply:Originally Posted by Showdog75I'm with Terry, I'd say it was welded in a chamber.  To clean not to have been.
Reply:maybe it's just some rework, balancing blades.   why titanium?  why a chamber?http://www.turbocam.com/pumps
Reply:Original was here:  http://forums.quattroworld.com/s4/threads/14515.phtmlPost 932 of the The link below and the posts which follow it show a similar part and describe the processhttp://honda-tech.com/showthread.php...peller&page=38Last edited by Mr. Moose; 12-02-2013 at 12:46 AM.
Reply:The one I remember reading about was a turbo or turbine impeller for a ship of some sort I believe. It was quite some time ago, I may be all wrong.
Reply:I have a buddy that welds ti impellers for jet engines, they have the edges built up and machined. I don't know every thing about it. So I am not the expert. But what I do know is that they are welded in a purge chamber, with a purge moniter that is connected to the welder which cuts power if the PPM content gets to high. And he only welds one puddle/bead at a time and let's the piece cool for about 10 seconds. Then repeats.Local 83
Reply:Originally Posted by tig_21How do you know? I thought they didn't cast titanium? Where I got the pic from i thought they said it was aluminum.
Reply:I watched an air craft welding video a while back and was amazed at how big the cup was on the torch for welding that stuff....Last edited by B_C; 12-05-2013 at 10:01 PM.  Miller Dynasty 350Twenty Six HammersThree Crow BarsBig Rock
Reply:Like this one B_C or was it coffee can style?.... Miller Dynasty 200Millermatic 211Instagram?.... find me @ WELD_MEDIC
Reply:It looks like the inducer impeller of a turbocharger. The turbine blade has a closer ratio opposed to the inducer. I thought they're aluminum? I have a Turbonetics 66mm turbocharger. And its similar to the inducer. The new tech now-a-days is billet You can tell its aluminum due to the skinnier vanes (which allow more airflow within the center)They have to be forged though (I would think) considering rotations are around 80,000 RPM for something like mine and 120,000+ for smaller (t3 flanged) turbochargers. 120k rpms is some insane centrifugal force. Attached ImagesLast edited by supramike; 12-10-2013 at 03:57 AM.
Reply:Yes turbo charger compressor impellers are usually cast aluminum. PTE, Forced Performance and a few others mske billet aluminum wheels that are machined to shape. You can see the lines from the cutting bits. This although is (in my opinion) is a Tianium impeller.    Billet aluminum compressor wheel costs $200-$500. Ti turbine/impeller costs $10,000+. That's why the are building up tolerances which where worn my erosion. It is defiently Ti, you can see by the heat hint. It's not A/C cleaning like with aluminum. The edges of the blades are being built up so they can be machined back to tolerances.Last edited by RodBender; 12-10-2013 at 08:21 AM.Local 83