Tip Tig USA LLC

155 E 9th Ave Unit A
Runnemede,  NJ  08078-1158

United States
856-312-8164
http://www.tiptigusa.com

• Booth: B21096

 Press Releases

• P91 Welds from Root to Cap with TIP TIG (Sep 03, 2019)

  P91 Welds from Root to Cap with TIP TIG

  ABSTRACT

  Welding of Grade 91 (9Cr-1Mo-V) chromium-molybdenum steel has presented numerous challenges since its introduction in the 1980s. One of the principal challenges has been the selection of the optimal welding process. For single-sided-groove welds, the root bead and hot pass(es), are deposited using manual Gas Tungsten-Arc Welding (GTAW) process with an inert gas purge (most commonly argon), followed by another welding process(es) for completion of weld. It goes without saying, that the GTAW process can produce welds of high quality; however, manual welding it is extremely expensive and labor intensive, requiring skilled welders with extreme hand eye coordination and dexterity. Tip Tig has forever changed how P91 will be welded for either shop or field fabrication by introducing a semiautomatic GTAW hot wire welding system. Tip Tig’s system is cost effective and can be used for the entire weld from root to cap while producing the high quality weld that the industry expects from the GTAW process.

  TIP TIG USA

  155 E. 9^th Ave. Ste. A

  Runnemede, NJ 08078

  (856) 312-8164

• Elimination of Backing Gas in Austenitic and Duplex Stainless Steel Welds using High Deposition Metal Transfer Gas Tungsten-Arc Welding (HDMTGTAW) (Sep 03, 2019)

  Elimination of Backing Gas in Austenitic and Duplex Stainless Steel Welds using High Deposition Metal Transfer Gas Tungsten-Arc Welding (HDMTGTAW)

  ABSTRACT

  Open root welding of austenitic and duplex stainless steel with gas tungsten-arc welding (GTAW) is typically performed using an inert backing gas for purging, such as argon, to protect the root pass from atmospheric contamination and oxidation. In many cases, using a backing gas for purging is impractical due to system design, access limitations, personnel safety, schedule and various economic factors. Until recently the only options available for open root welding of austenitic and duplex stainless steel that eliminated the need for backing gas were: flux agents, flux coated/flux cored rods and gas metal-arc welding using the short-circuiting transfer (GMAW-S). Each of these options have been used successfully, to some degree, in diverse service environments. Now after extensive application research, development and testing the need for backing gas has been eliminated for open root welding of austenitic and duplex stainless steel using a semiautomatic GTAW hot wire welding system technically known as High Deposition Metal Transfer Gas Tungsten-Arc Welding (HDMTGTAW) or better known as TIP TIG, combined with stainless steel or duplex flux cored wires (AWS/ASME A/SFA-5.22 and A/SFA-5.22M) and argon shielding. The TIP TIG HDMTGTAW system when combined with flux cored wire for the root pass and solid wire for the remainder of the weldment is a complete, cost effective system for welding the entire weld from root to cap that is capable of producing quality welds with high integrity.

  TIP TIG USA

  155 E. 9th Ave. Ste. A

  Runnemede, NJ 08078

  (856) 312-8166

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