welding aquamet 22

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Has anyone here attempted to weld Aquamet 22? I have to weld a Rudder shaft to a coupling on a boat. Shaft is aquamet, coupling may be aquamet, may be 316L. Any suggestions welcomed
Reply:aquamet 22 is very similar to 316l.
Reply:aquamet 22 (as mentioned) is similar to 316 stainless.  I would recommend 316 filler.Welding a coupling to a rudder post shaft?This is a new one on me, and I've been around marine repair for over 30 years.How do you plan to ever get the rudder out through the rudder post if you WELD a coupling to it?Generally, the rudder control arm is "clamped" to a machined portion of the rudder shaft.You sure you're not setting yourself up for "major problems" down the road?Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:agree with sundown are you trying to make it longer?pics would help .......316 would filler of choiceidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:prop-doc,If he's trying to lengthen the shaft, he'd be better off installing a "muff cuff" like when using a two piece shaft.Hatteras Yachts (for one) used muff cuffs quite extensively on their main shafts.For the life of me, I can't imagine a situation where I'd want to weld a component to a rudder shaft.  Rudder feedback sensors, etc. (for autopilot installation)  are normally attached to the rudder control arm.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:We weld the nuts that hold our propellers and rudders on our boats but we don't weld the couplings to the shafts.If the fit of the coupling is loose, I have seen Belzona epoxy used sucessfuly without machine shop time to repair the fit.
Reply:agree just didnt understandwhy he would want to weld a shaft to a couplerstriped -broke  -or makin longeridealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:the coupling enables you to take off the rudder without dropping the shaft. We call it fish-boat style.Coupling on the rudder coupling on the shaft. This is a new rudder and shaft going on a 110' wooden schooner. The aquamet is being used for its strength to reduces the shaft diameter which compromises the horn timber. All this is designed by navel architects, With shipwrights input on design.I was wrong about aquamet 22, it is specs call for aquamet 17 which seems close to  304Lmore resistant to crevice corrosion
Reply:what do the pros say to use ???you got archie-texs  ,, and shipwirghts .. what  do they say to use ?idealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:They have left that up to me, no design of the weld joint or what process / filler to use.  Back to my question which is what filler rod to use for aquamet 17Thanks Joe
Reply:Heck man.You're the one making the "big bucks" here.Ever think of picking up the phone and calling aquamet?If it should fail somewhere down the road, you'll be in a better position having got your information there, rather than some unknown on an internet board.Gotta admit though that those "wind-fairies" do things different from us "stinkpoters".Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:marine machining and manufacturing, I will call tomorrow. I am a self taught welder, still learning and searching for information anyplace I can find it. I know to take inter-web forum info with a grain of salt, at the same time there is a wealth of info were. I cant believe you guys haven't seen a rudder shaft with a coupling welded to it. pretty standard on pacific northwest  work boats. I will have to find a photo to post
Reply:Im sorry, I think it is not a coupling but a flange. heres a photo off webhttp://3.bp.blogspot.com/_fRBeaR4Ml1...+001rudder.jpg
Reply:Trying to put up photo sorry new to this Attached Images
Reply:another with rudder attached Attached Images
Reply:i carry 308 ,309, an 316  in the shop i'd use 316 but im a okieidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:And I'm a powerboat guy.Used to be a dealer for Tollycraft, built out your way in Kelso, WA, and never see that setup.Are you doing just a filet weld at the top of the coupling, or is it a filet at the top as well as a filet weld inside the coupling.  In other words, is the coupling thru bored so you have a shoulder between the shaft and the inside of the coupling.I'd use 316 also, but I'd still call aquamet.Edit:  After doing a little more homework, I'd definitely contact aquamet for filler guidance and their comments regarding welding Aquamet 17.  Aquamet 17 achieves it's strength from heat treating.  Also a magnet will stick to 17 which is not the case with 22.Last edited by SundownIII; 01-04-2011 at 01:37 AM.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:coupling is thru-bored and welded on both sides. I have done them out of 316L before with success, Deep v with multi-passes pre-heat. all worked well. I am  definatly going to call aquamet tomorrow.Thanks
Reply:I would personally use 309L, especially because of the dissimilar metals involved.  309 does not have the corrosion resistance of 316 but it beats 304 and your material is comperable to 304.I only deal with mild steel rudder shafts.  The last one I installed was 9 inches in diameter.Last edited by 76GMC1500; 01-04-2011 at 08:32 PM.