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Technical Help of Powerful Magnets

At the technical level, we help customers reasonably and correctly select the type, grade, size and surface treatment of the magnets, provide various test results for reference, and provide professional packaging. Even provide more magnetic application solutions.


Magnetization of Permanent Magnets


Magnetization Of Permanent Magnets


Surface Treatment of Neodymium Magnet and the Characteristics of Various Coatings

Surface

Coating

Thickness (Microns)

Color

Resistance

Passivation


1

Silver Grey

Temporary Protection

Nickel

Ni+Ni

10-20

Bright Silver

Excellent Against Humidity

Ni+Cu+Ni

Zinc

Zn

8-20

Bright Blue

Good Against Salt Spray

C-Zn

Shinny Color

Excellent Against Salt Spray

Tin

Ni+Cu+Sn

15-20

Silver

Superior Against Humidity

Silver

Ni+Cu+Ag

10-20

Silver

Superior Against Humidity

Gold

Ni+Cu+Au

10-20

Gold

Superior Against Humidity

Copper

Ni+Cu

10-20

Gold

Temporary Protection

Epoxy

Epoxy

15-25

Black,Red,Grey

Excellent Against Humidity&Salt Spray

Ni+Cu+Epoxy

Zn+Epoxy

Parylene

Parylene

5-20

Grey

Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved

Chemical

Ni

10-20

Silver Grey

Excellent Against Humidity


Physical Properties of Sintered Neodymium Magnet

Parameter

International Unit

Standard Data

Curie Temperature(Tc)

310-380

Maximum Operating Temperature(Tw)

80-230

Hardness

Hv

620

Electrical Resistivity (ᵨ)

Ω.cm

1.8x10⁻⁴  ~2.0x10⁻⁴

Density(D)

g/m³

7.45~-7.65

Recoil Permeability(µ rec)


1.05

Magnetization Field Strength(Hs)

kA/m

≧2400

kOe

≧30

Bending Strength

Mpa

295-345

Temp. Coefficient of Br

%℃

-0.11~-0.12

Temp.Coefficient of Hcj

%℃

-0.5~-0.7


Standard Shapes and Specifications of Various Permanent Magnets

Common Magnet Shapes And Expressions Of Different Shapes

According to the actual needs, magnetic materials can be processed into different shapes. The common shapes mainly include round (disc and cylinder) magnet, square (block) magnet, ring magnet and arc magnet. Magnets with different shapes have different expression methods.


Common Magnet Shapes And Expressions Of Different Shapes


You can also buy irregular shapes (also called special-shaped magnets) from us, which including countersunk magnets, sphere magnets, cone magnets, heart-shaped magnets, star-shaped magnets, flower-shaped magnets,clasp magnets.


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THANK YOU FOR YOUR ATTENTION ON Meank Magnet!

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