Nanoparticle-Based Welding Flux with Nonevaporable Solvent

Nanoparticle-Based Flux with Nonevaporable Solvent

For Tungsten Inert Gas (TIG) Welding of Thick Plates

A titanium oxide-based nanoparticle flux in nonevaporable solvent for use in tungsten inert gas (TIG) welding of thick plates, this flux offers penetrative depth of up to 14mm on a single pass.

 

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Commercial Applications:

  • Aerospace/Avionics
  • Defense/Military
  • Construction
  • Automotive
  • Shipbuilding
  • Transportation/Infrastructure
  • Pharmeceutical
  • Food Industry
  • Heat Exchangers
  • Chemical Containers and Transport

Innovation Benefits:

  • Reduces the number of passes needed for thick plates
  • Nanoparticles produce a more effective weld
  • Shelf-stable solvent retains consistent quality
  • Weld has up to 95% strength of the base material
  • Save time, labor, and materials
  • Fast and efficient, no V-preparation needed
  • Easy application to the weld surface
  • Low risk, efficient, and easy to use
Provisional Patent Application # 63/362,625

 

Technology Overview

Innovators at the University of New Hampshire and their collaborators have developed significant advances to tungsten inert gas (TIG) welding through the use of a nanoparticle-based flux with nonevaporable solvent for use on austenitic stainless steel thick plates. The innovation addresses two of the most common issues with TIG welding, penetration depth and the need for multiple passes (as described above), offering both consistent effectiveness and the reduced appearance of defects through welding in a single pass, while reducing spoilage costs by extending shelf life. This innovation uses a titanium oxide-based nanoparticle flux in a nonevaporable solvent, which is applied to the joint area on the side over which the TIG electrode will pass. This innovation can achieve a penetration depth of 10 mm with current of 200 A and 14 mm with approximately 300 A upon a single pass, providing a substantial advantage over currently available flux products, which rely on microparticles in a highly volatile, evaporable solvent.

Lead Innovators, Dr. Sebastian Balos & Marko Knezevic, Ph.D.

Dr. Sebastian Balos is a Full Professor and currently the Vice Dean for Investments and Cooperation with Industrial Sector, Head of Materials Testing Laboratory and Welding Laboratory, and Faculty of Technical Sciences University of Novi Sad, Serbia. He took his Ph.D. in 2010. His research interests include materials science and joining technologies; more specifically, ballistic protection, nanocomposites, arc welding, friction welding, laser shock peening, etc.

Marko Knezevic, Ph.D. is a professor of mechanical engineering, integrated applied mathematics, and materials sciences at the University of New Hampshire. Knezevic received his Ph.D. in materials engineering from Drexel University in 2009. His research interests include physics-based multi-scale constitutive models, computational materials science, and design and manufacturing processes.

 

For more information, please fill out the inquiry form below
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Or contact us directly:
Maithili Shroff, Licensing Manager for Engineering & Physical Sciences
maithili.shroff@unh.edu  |  603.862.4054

 

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