We are the 100% right hi-tech OEM manufacturer!
We are well equipped to manufacture these materials to customers'
Material Grade of NdFeB magnet:
Magnet N-( N30,N33,N35, N38, N40, N42, N45, N48, N50,N52,N55),
working temperature:80 deg.
Magnet M-(N33M,N35M, N38M, N40M,N42M, N45M, N48M,N50M,N52M,N55M),
working temperature:100 deg.
Magnet H-(N33H,N35H, N38H, N40H, N42H, N44H,N46H,N48H,N50H,N52H),
working temperature:120 deg.
Magnet SH-(N30SH, N33SH, N35SH, N38SH, N40SH, N42SH,N45SH,N50SH),
working temperature:150 deg.
Magnet UH-( N30UH, N33UH, N35UH, N38UH,N40UH,N42UH,N45UH), working
Magnet EH-(N28EH, N30EH, N33EH, N35EH,N38EH,N40EH,N42EH) working
Magnet AH-(N28AH, N30AH, N33AH) working temperature:220 deg.
Our factory can manufacture NdFeB magnet in various size and
shapes(like block,arc,cylender,ring,bar ect.), according to the
Surface Treatments: Zinc, Ni-Cu-Ni, Epoxy, Gold, Silver,
Passivation, and custom coating available upon request.
All our magnets are of great stability and high consistency in
Neodymium iron boron (NdFeb) magnets, also known as rare earth
magnet and neo magnets, offer the best value when comparing
performance, size and cost. Neodymium iron boron magnets, normally
called neo and rare earth magnets, are moderate in price and
typically allow for dimensional reductions. Neo magnets or rare
earth magnets have poor resistance to corrosion and should have a
coating or plating applied. Consideration should be given to the
grade of alloy when exposing Neodymium iron boron ( neo and rare
earth magnets ) to temperatures above ambient room. Neo ( rare
earth and Neodymium iron boron ) magnets have good resistance to
external demagnetization fields because of its high Intrinsic
Coercive Force (Hci). This resistance makes Neodymium iron boron
magnets an excellent choice for electromechanical applications.
(NdFeb) Neodymium Iron Boron Magnets Manufacturing Process
Fully dense Neodymium Iron Boron Magnets "neo magnets & rare
earth magnets" are usually manufactured by a powdered metallurgical
process. Micron size Neodymium and iron boron powder is produced in
an inert gas atmosphere and then compacted in a rigid steel mold or
in a rubber mold. The rubber mold is compacted on all sides by
fluid and it is referred to as isostatic pressing. The steel molds
will produce shapes similar to the final product, while the rubber
mold will only create large blocks (loaves) of Neodymium iron boron
"commonly known as neo or rare earth" magnet alloy. The Neodymium
iron boron alloys magnetic performance in both compacting methods
is optimized by applying a magnetic field before or during the
pressing operation. This applied field imparts a preferred
direction of magnetization, or orientation to the Neodymium Iron
Boron Magnet alloy. The alignment of particles results in an
anisotropic alloy and vastly improves the residual induction (Br)
and other magnetic characteristics of the finished rare earth
magnet named Neodymium Iron Boron magnet which is also called "neo
magnet". After pressing, the neo "Neodymium Iron Boron" magnets are
sintered and heat treated until they reach their fully dense
condition. The die pressed neo / rare earth magnets are ground to
the final dimensions, but the brick magnets from the rubber mold
method are usually squared on large grinders and then sliced to the
final geometry. Isostaticly pressed alloy has higher magnetic
properties than the die pressed material, but it may lack the
uniformity. The choice of Neodymium iron boron "rare earth / neo"
magnet manufacturing method is usually application driven and is
typically not a concern of the customer.
(NdFeb) Neodymium Iron Boron Magnets Temperature Characteristics
Sintered Neodymium Iron Boron "neo / rare earth" magnets are
susceptible to demagnetization when exposed to elevated
temperatures. There are many grades which can withstand high
temperatures, but several factors will dictate the performance of
the Neodymium Iron Boron magnet. One of the most pertinent
variables is the geometry of the neo / rare earth magnet or
magnetic circuit. Neo / rare earth magnets which are thin relative
to their pole cross-section (Magnetic Length / Pole Area) will
demagnetize easier than neo magnets which are thick. Magnetic
geometries utilizing backing plates, yokes, or return path
structures will respond better to increased temperatures. The
maximum recommended operating temperatures listed on the Neodymium
iron boron magnet magnetic characteristics page does not take into
account all geometry conditions. Please contact us for Neodymium
magnets design assistance when elevated temperatures are involved
in your application.
(NdFeb) Neodymium Iron Boron Magnets