Safina’s copper powder used in one of the world’s strongest magnets

October 11, 2021

A Safina customer credits its copper powder quality with the success of a 35 tesla magnet (Courtesy CNRS/Bertrand Maclet)

Over its 100-year history, Safina, Vestec, Czech Republic, has established a strong position in the processing and manufacturing of precious and non-ferrous metal products such as thermocouple wires, PGM wires, plates and tubes, spray targets, laboratory supplies, chemicals, metal powders and more.

Now, with the company’s adoption and development of cold spray Additive Manufacturing, it is enabling its customers to produce high-power magnets. There are reported to be only four companies in the world able to operate with steady high magnetic fields, and one of them is a customer of Safina based in France. This customer is reported to have achieved a record induction of a magnetic field of more than 35 tesla, making it one of the strongest magnets in the world.

The internal electro-magnet was made of fourteen polyhelices, allowing a very high magnetic field in a series of parts which have to support thermal and mechanical constraints (up to 440 MPa and 170°C). With cold spray Additive Manufacturing it is possible to achieve higher properties than possible with forging (with forging, there is a limitation of yield strength and electrical conductivity).

The higher properties allow the installation to increase the available magnetic field for researchers. Such a high magnetic field is made possible by running up to 30,000 A per cm² in the helices, with AM enabling a cooling system to be integrated. It is also possible to tune several properties, such as yield strength and electrical conductivity, with different heat treatments.

Safina helped the company develop a bespoke copper powder based on very specific customer requirements. It was the ability to supply a metal powder from the alloy, in such a high quality, which was said to enable the customer achieve a high magnetic field induction.

The magnet has since been used by research institutions and universities for various physical experiments, such as understanding the processes of magnetic fields in space.

www.safina.cz

In the latest issue of Metal AM magazine

Download PDF
 

Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • Transforming access to medical implants with PrinterPrezz
  • Lessons from 2021’s Olympic bike crash
  • Xerox liquid metal AM
  • Additive Manufacturing for oil, gas and maritime
  • Multi-material metal parts by Powder Bed Fusion
  • Findings from Wohlers Report 2022
  • The challenge of grain size: X-ray powder diffraction analysis of parts made by metal AM

The world of metal AM to your inbox

Don't miss any new issue of Metal AM magazine, and get the latest industry news. Sign up to our twice weekly newsletter.

Sign up

News from the industry…

    News from the industry…

    Discover our magazine archive…

    The free to access Metal Additive Manufacturing magazine archive offers unparalleled insight into the world of metal Additive Manufacturing from a commercial and technological perspective through:

    • Reports on visits to leading metal AM part manufacturers and industry suppliers
    • Articles on technology and application trends
    • Information on materials developments
    • Reviews of key technical presentations from the international conference circuit
    • International industry news

    All past issues are available to download as free PDFs or view in your browser.

    Browse the archive

    qweqw

    Looking for AM machines, metal powders or part manufacturing services?

    Discover suppliers of these and more in our comprehensive advertisers’ index and buyer’s guide, available in the back of Metal AM magazine.

    • AM machines
    • Process monitoring & calibration
    • Heat treatment & sintering
    • HIP systems & services
    • Pre- & post-processing technology
    • Powders, powder production and analysis
    • Part manufacturers
    • Consulting, training & market data
    Download PDF
    Share via
    Copy link
    Powered by Social Snap