The tube are located in the secondary superheater panels of the boiler hanging the top of the furnace. and we are haveing trouble finding the T23 material.
I have a boiler repair that will consist of replacing a section of 2"OD x .201"MW T23 tube with a section of T91 tube. There is a T23/T91 dissimilar weld line just below the repair area and there is no T23 tube stock on-hand but have the T91. I am planning to utilize the NBIC weld method 6 for...
I have literature stating that 309L is good for welded the lean duplex to itself. one of my vendors is recommending a wire that matches the UNS# of the base. I am leaning toward the 309L for the dissimilar weld so it would definitely make the rod supply easier with less chance of contamination...
I am looking at a project that will involve welding new a 304ss (P8) vessel to a existing s32101 duplex (p10H) vessel in a paper mill flue gas scrubber system. I am looking for advice on process and choice of filler metal for GTAW, GMAW, and/or FCAW applications, I have seen recommendations on...
I am looking for specifics on the welding end of this material. I have found that some are using Inco 617 to weld it, and others are using what appears to be 304H Cu, and I have also found a MT304H that seems to be a match to the base material. I am looking for any pro's or con's for any of these.
We are looking at a project that involves welding of super alloy 304H. I am having issues finding any information on the the material at all much less what to weld it with. 2015 ASME Sec. IX list a UNS # S30432 that has the appropriate chemical composition of 18Cr 9Ni 3Cu Cb N (at least that is...
Thank you for your responses. The dissimilar weld I mentioned previously, is at a header. The T12 is a 5" stub 0.5" thick. I originally assume they were trying the temperbead to keep the PWHT area away from the header, but the client's reasoning was to eliminate possible carbon migration issues...
My company is being asked by a client to weld SA213-T23 to a SA213-T12 boiler wall tubes, using a temperbead welding procedure to eliminate any carbon migration issues caused by PWHT. In all the research I've read, I can find no recent information supporting any welding T23 material without...
I am working on a SA335-P22 header that is 4" thick. We are welding with E9018-B3 and are going to perform post weld heat treatment, my client is requesting the use of a 550 deg F preheat, the interpass temperature on my welding procedure is also 550 deg F. My question is where can I find, or...
I am in the fossil fuel power generation industry. When welding chrome-moly alloys of different composition, I have always suggested the use of the higher of the two for the filler metal (ex. welding T22 to T9 with ER80S-B8 or E 8018-B8). Recently some clients are requesting the us to use the...
