Segment NdFeB, generally applied into electric motors

Segment Ndfeb are widely used in motors and all kinds of equipment. Taking various types of motors as an example, the use of Segment Ndfeb has the advantages of low noise and high torque. The grades above SH of Segment Ndfeb are mainly used in the market at present. The grade above SH in our company widely used above non-dysprosium or less-dysprosium technology on formula cost advantage is obvious. We can be customized according to customer specified size, arc blank, which solve the square billet machining waste, high cost etc. At the same time, we use arc penetration process for low grade of products through magnetron sputtering, let heavy rare earth well-proportioned infiltrate grain boundary phase of magnet, making the coating more stable than penetration process on the market currently at the same time, to reach lower cost for the customer.

Products Details

Surface Coating Thickness μm Color SST Hours PCT Hours
Nickel Ni 10~20  Bright Silver >24~72 >24~72
Black Nickel Ni+Cu+Ni  10~20 Bright Black   >48~96 >48
Cr3+Zinc Zn C-Zn 5~8 Brighe Blue Shining Color >16~48 >36~72 ---
Sn Ni+Cu+Ni+Sn 10~25 Silver >36~72 >48
Au Ni+Cu+Ni+Au 10~15 Gold >12 >48
Ag Ni+Cu+Ni+Ag 10~ 15 Silver >12 >48
Epoxy Epoxy 10~20 Black/Grey >48 ---
Ni+Cu+Epoxy 15~30  >72~108 ---
Zn+Epoxy 15~25  >72~108 ---
Passivation --- 1~3 Dark Grey Temporary Protection ---
Phosphate --- 1~3 Dark Grey Temporary Protection) ---
Item Parameters Reference Value Unit
Auxiliary Magnetic Properties Reversible Temperature Coefficient Of Br -0.08--0.12 %/℃
Reversible Temperature Coefficient Of Hcj -0.42~-0.70      %/℃
Specific Heat 0.502    KJ·(Kg ·℃)-1
Curie Temperature  310~380      
Mechanical Physical Properties Density 7.5~7.80   g/cm3
Vickers Hardness 650      Hv
Electrical Resistance 1.4x10-6        μQ ·m
Compressive Strength 1050   MPa
Tensile Strength 80     Mpa
Bending Strength 290      Mpa
Thermal Conductivity 6~8.95 W/m ·K
Young's Modulus 160  GPa
Thermal Expansion(C⊥) -1.5     10-6/℃-1
Thermal Expansion(CII) 6.5 10-6/℃-1
For size, our company is equipped with arc size sorting machine of Keyence, which reduces the risk caused by bad batch of tolerance control assembly part magnet assembly of customers. No matter what kind of coating, we all can ensure the arc special treatment on the surface of the segment for the colloid affinity of magnet to the solutions in the use process where the stick, the embedded glue tension is insufficient and so on. For delivery terms, we have a variety of blanks in different sizes and grades, for making prototype magnet at any time. We order powder in bulk in advance so that flexible dual alloy technology can satisfy the customer delivery requirements after receiving customer demand. Our company is equipped with professional technical and sales team which can provide technical advice, magnet assembly scheme, and a large number of use cases at any time to ensure that have no additional worries in the process of using for clients. We strictly abide by the standards of process controlling, the flow controlling in accordance with the IATF16949 system, to ensure delivery and quality monitoring for customers.

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