Forum Technical Discussions      Urgent- ToFD for Steam Reformer Tube Posted by: farabirazy , E-mail: Address, on November 29, 2008 at 06:05 : Dear Gentlemen, Does anyone ever involve in research of ToFD for Cast austenitic stainless steel used as ammonia reformer tube? I tried to detect artificial defect in IN 519 material, but I can not distinguish the backwall signal. Can anyone explain why and what should I do to detect the defect in this material by using ToFD? As FYI, I used 2.25 MHz ToFD transducer. Is there any commercial ToFD transducer with frequency below 2.25 MHz? Please help me... Sincerely Yours, Abi Follow Ups: Re: Urgent- ToFD for Steam Reformer Tube Michel Couture 20:10 Nov-30-2008 (1) Re: Urgent- ToFD for Steam Reformer Tube Ed T. 19:53 Dec-02-2008 (0) Post a Followup: Name: E-Mail: Subject: Comments: ----------- Start Original Message ----------- : Dear Gentlemen, : Does anyone ever involve in research of ToFD for Cast austenitic stainless steel used as ammonia reformer tube? I tried to detect artificial defect in IN 519 material, but I can not distinguish the backwall signal. Can anyone explain why and what should I do to detect the defect in this material by using ToFD? As FYI, I used 2.25 MHz ToFD transducer. Is there any commercial ToFD transducer with frequency below 2.25 MHz? : Please help me... : Sincerely Yours, : Abi ------------ End Original Message ------------ Optional Link URL: Example: "http://www....html". Alternative write "http://www.ndt.net/wshop/attach/filename.htm" if you transfered a filename.htm via FTP Page Title: is important! Optional Image URL: http://www....gif Attention! Please click the button only once. This may take a moment to process Forum Technical Discussions Help