Company

About Fluxtrol

Four decades of magnetic flux control, research and induction education.

Fluxtrol, Inc. is a world leader in soft magnetic composites for induction heating and a provider of induction engineering services. Founded in 1981 by Robert S. Ruffini, it combines Fluxtrol Manufacturing with the Centre for Induction Technology (CIT).

Fluxtrol, Inc., a merger of Fluxtrol Manufacturing and the Centre for Induction Technology, partners with manufacturers to reach optimal induction heating solutions using proprietary magnetic materials, scientific knowledge, engineering experience and innovative solutions.

Our story

Fluxtrol Manufacturing was founded in 1981 by Robert S. Ruffini, an inventor, entrepreneur and induction heating enthusiast who specialized in developing and manufacturing soft magnetic composites for magnetic flux control in induction systems.

In 1993 he founded the Centre for Induction Technology (CIT) to educate and promote induction technology, and invited Professor Dr. Valentin Nemkov, one of the world’s foremost experts in induction heating technique, to lead CIT’s technical efforts: practical solutions for productivity, enhancing the Fluxtrol product portfolio, and educating user-professionals.

Fluxtrol, Inc. and CIT have advanced induction heating technology for more than three decades and have become a world leader in the manufacture and supply of soft magnetic composites. We also provide a wide range of induction engineering services to global industries.

Team and reach

We have a team of 20 induction heating experts, including ten engineers with deep industry experience, serving customers through a global distribution network. Together with our customers’ specialists, our engineers have developed solutions now used in thousands of applications, from automotive to aerospace, oil and gas, special metallurgy, biomedical and the food industry. Fluxtrol is proud to serve companies and research centers such as NASA, Boeing, GE, Caterpillar, Pratt & Whitney, Tetra Pak, GKN and GM.

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History

Fluxtrol through the years

Selected milestones from four decades of magnetic flux control, research and induction education.

  1. Foundations1981–2000
  2. Founding

    1981: Robert S. Ruffini founds Fluxtrol Manufacturing

    An inventor, entrepreneur and induction heating enthusiast, Ruffini sets out to develop and manufacture soft magnetic composites for magnetic flux control. The same year, a Russian course book on induction heating installations, co-written by Valentin Nemkov, is published in Leningrad.

  3. Patent

    1984: Ruffini's own patent: “Inductor, coating and method”

    US 4,486,641 is the earliest dated patent in the record, and a sign of the founder's hands-on engineering roots.

  4. Founding

    1993: The Centre for Induction Technology is born

    Ruffini founds CIT to educate and promote induction technology, and invites Prof. Dr. Valentin Nemkov, “one of the world's foremost experts in induction heating technique”, to lead its technical work.

  5. Industry

    1993–99: Others start building on Fluxtrol materials

    Patents from Armco, Inland Steel, Avco and Borg-Warner cite Fluxtrol: from molten-metal containment to brake densification and clutch assemblies. Early evidence of SMCs in demanding industrial work.

  6. Team

    1998: Rob Goldstein joins from the University of Michigan

    Now Executive Director of Strategic Planning and Product Development, he has co-authored more than 100 papers and presentations on induction heating.

  7. Patent

    1999–2000: Ruffini and Nemkov patent together

    High-frequency induction fusing (US 6,162,509) and heat treating of metal parts with varying aspect ratios (US 6,166,360): the first joint patents in the record.

  8. Research & reach2003–2014
  9. Research

    2003: Simulate first: computer-assisted aluminum brazing

    The earliest paper in Fluxtrol's technical library applies computer simulation to aluminum brazing. The approach is still the core of how the team designs coils.

  10. Research

    2005–06: A surprising chapter: magnetic fields and medicine

    Papers on high-amplitude alternating magnetic fields for cancer research appear, along with a patent on targeted delivery of nanoscale particles (WO 2004071370).

  11. Education

    2006: Teaching induction around the world

    Fluxtrol experts lecture in Luoyang, China, and run seminars at customer sites including GKN, Caterpillar, Dow Corning and Mack Truck.

  12. Industry

    2007: From heat treating to oil-well drilling

    A Baker Hughes patent cites Fluxtrol as an antenna core material for measurement-while-drilling resistivity and NMR sensors.

  13. Patent

    2007–08: Induction goes into food packaging

    Nemkov is a named inventor on Tetra Pak sealing-device patents for packaging pourable food products, the start of a long collaboration.

  14. Media

    2008: The first video demonstration goes online

    A November 2008 demo kicks off a library of flux-concentrator videos. In 2009 a video follows comparing Fluxtrol LRM against laminations.

  15. Books

    2008–09: Fluxtrol authors enter the reference shelf

    Nemkov writes the induction-hardening modeling chapter of CRC's Handbook of Thermal Process Modeling of Steels (2009) and edits a design chapter in History of Induction Heating and Melting (2008).

  16. Books

    2014: Two Fluxtrol chapters in ASM Handbook Volume 4C

    Goldstein co-authors “Design and Fabrication of Inductors for Induction Heat Treating” and writes “Magnetic Flux Controllers in Induction Heating and Melting”.

    Read the chapter →
  17. Recognition & momentum2018–2026
  18. Award

    2018: Student and academic research awards begin

    With the ASM Heat Treating Society, Fluxtrol starts recognizing student and academic research in thermal processing, including a $2,000 student award.

  19. Award

    2019: The Valentin S. Nemkov Academic Research Award

    The academic award is named for Fluxtrol's longtime scientific lead and presented at HEAT TREAT 2019.

  20. Media

    2019: Meet Fluxtrol Man

    Because “many of our application case studies are confidential”, Fluxtrol works with a Marvel artist to tell its story through a comic-book superhero.

  21. Company

    2020: Keeping the supply chain running

    In March 2020, Fluxtrol tells customers it will continue safe, uninterrupted manufacturing and supply during COVID-19. The awards program reaches IMAT 2020.

  22. Media

    2021: Fluxtrol Man hits the screen

    “The Adventures of Fluxtrol Man” launches as an animated series. Episode one begins: “Fluxtrol Man came to Earth in 1981…”

  23. Award

    2022: Back in person at the IFHTSE World Congress

    Fluxtrol sponsors the poster competition at the first in-person IFHTSE event in two and a half years.

  24. Award

    2023: Rob Goldstein is named an ASM Fellow

    Recognized as a Fellow of the Society (FASM) for seminal work on induction heat treating applications touching human health, space exploration and materials processing.

  25. Award

    2023: The Robert S. Ruffini Innovation and Entrepreneurship Award

    Launched with the HES-23 conference in Padua, Italy, to encourage young innovators in electrotechnology, and named for the founder.

  26. Research

    2025: Tube welding takes center stage

    New research on SMC impeder cores for high-frequency tube welding, shown at Fabtech and Heat Treat, and a sponsor of the 3rd Quenching and Distortion Engineering conference.

    See the impeder research →
  27. Media

    2026: Seeing the flux difference on video

    New demonstrations compare five inductor geometries with and without Fluxtrol 25, and show Alpha-form boosting coil efficiency. Fluxtrol also exhibits at Tube 2026 in Düsseldorf.

    Watch the videos →

What sets us apart

What customers say

“We at Trueflaw have been using Fluxtrol’s concentrators for many years. The high efficiency and control over the induction process that we get with these concentrators simply wouldn’t be possible without them.”

Iikka Virkkunen, Dr. Sc. (Tech.), Managing Director, Trueflaw Ltd.

Read more customer testimonials →

More about Fluxtrol

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