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Thanks blacksmith37 and metengr!! We have gotten by the PWHT issue BUT they are balking at the thought of qualifying a repair procedure... Years ago I was doing a lot of die welding and am familiar with the welding of mostly high carbon and/or high carbon equivalency alloys re martensite...

Big Thanks to 21121956, stanweld and EdStainless! Customer is still adamant, NO PWHT! This thing is monstrous and significant heat induced distortion would be a disaster. It is a four blade impeller, each blade the size of a single-car garage door with the cavatation area the size of a dinner...

Customer wants to fill cavatation in a CA6NM casting with an austenitic stainless steel filler metal to avoid preheat abd post weld heat treatment costs and time. The question is, what will happen?

Thanks BillPSU and Meteng, We have had occasion in the past to "cobble" this stuff but this isn't a "just-get-me-by" fix. The spec just caught up with the drawing. There is an ultra-sound, post-weld... Must be the customer has had some negative experience in the past. Why would he still be...

Ok guys, Welding AISI 1144 resulfurized steel... a.k.a. "Stressproof" I'm aware of (some of) the implications of the sulfur content. Anyone out there had any good/bad luck welding this stuff? Spec calls for a 3/8" fillet weld on an A-36 ring to be welded to a resulfurized 1144, 3 1/2"...

Can someone give the reasoning behind the seemingly arbitrary 450C/842F point of definition regarding Brazing and Soldering? Thank you... Russ Newell

G.Roberts, Bilge, Weld 123, Thanks for your timely replies. GR, ...no misting during welding, guess I wasn't too clear. Bilge, McGuire, over in "Piping and Fluid Mech..." said about the same thing. Weld 123, ...strange how experience notes the same things. We do delay quenching to...

McGuire, Thanks for your speedy response. Just what I wanted to hear. Russ Newell

We are multiple pass GTAW (tig welding) 304L and 316L SS piping of various diameters and thicknesses in the rotated 1G position. In the smaller diameters (1" through 8") we would like to speed up the process with an interpass air/water mist cooling of the rotating assembly to less than...

We are GTAW (tig welding) 304L/316L SS piping of various diameters and thicknesses in the 1G rotated position. In the smaller diameters (1" through 8") we would like to speed up the process with an air/water mist cooling of the weld to an interpass temperature of less than 250ºF...