Magnetics Business & Technology - May/June 2022 - 34

Carpenter Extends Expertise in Soft Magnetic Rotor & Stator Stacks; Joins FEMM Hub in UK
INDUSTRY NEWS
Carpenter Technology,
producer of an extensive
portfolio of soft magnetic
alloys, is continuing to
build its expertise in the
mass production of stator
and rotor stacks, while
also fostering future innovation
in electrification
manufacturing.
It has spent more than
half of its 130 years of
existence in perfecting the processing of soft magnetic materials
with high induction, permeability and low core losses, the company
notes. Two of its aims now are to more fully serve customers and
to realize improved motor responses by continuing to expand its
capabilities in the application of its materials to stator and rotor
production. Understanding that soft magnetic materials are sensitive
to processing steps that can reduce their performance, our
material experts and world-class facilities produce stacks through
a multitude of methods tailored to our customers' tolerances and
performance requirements, the company says.
" We understand that each of the process steps, including lamination
cutting, insulation, bonding, and machining adversely affect
magnetic performance of the alloys, " states principal electrification
engineer Patrick Walker in a recent blog focused on emerging
technology at Carpenter, titled Soft Magnetic Expertise from Melt
to Mass Production Lamination Stacks. " As material experts, we're
applying this knowledge to stack production to isolate and eliminate
these detrimental variables to provide the highest-performance
stacks that meet a customer's tolerance and cost needs, with the
ability to scale up production. "
" We're developing capabilities to understand and predict the growth
of laminations, which can be complicated depending on the design
of the stack. With this process, we have produced first article stacks
with tight tolerances via stamping. Our customers can eliminate
wasted time and expense from part and die design iterations, so
they move quickly through prototyping to mass production, " Walker
explains.
In a related move, last year the company joined the Future Electrical
Machines Manufacturing (FEMM) Hub in the UK as a new
industrial partner. The organization strives to put UK manufacturing
at the forefront of the electrification revolution. Carpenter joined the
initial group of 15 industrial partners including Rolls-Royce, GKN
Aerospace, Airbus, Siemens Gamesa, ZF Group, Dyson, Hoganas,
UTC, Protean, McLaren, Romax, Lanner, HVMC, National Physical
Laboratories and Aerospace Technology Institute.
Commenting on the new partnership, FEMM
Hub Director Professor Geraint Jewell said, " We
are delighted to welcome Carpenter Technology
to the Hub. They bring world-class expertise
in the manufacture of high-performance soft
magnetic materials and will greatly strengthen
our activities in the manufacture of high-performance
electrical machine cores. "
Geraint Jewell,
FEMM Hub director
Nir Vaks, global director of Carpenter's Soft
Magnetics Centre of Excellence in the UK,
added, " Since we began operations over 130
years ago, Carpenter Technology has always
looked for valued partnerships. Sharing our industry experience and
collaborating with our peers is at the heart of what we believe in. "
For more information see: www.carpentertechnology.com/blog/
femm
A variety of processing technologies, including booklet EDM, laser
cutting, and notch & progressive die stamping are available and tailored
based on an application's overall requirements. Stamping, for
example, offers the lowest high-volume cost and highest magnetic
performance for mass production, but sacrifices tolerance control as
Hiperco alloys experience growth during processing.
34 Magnetics Business & Technology * May/June 2022
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