Segment NdFeB, generally applied into electric motors

Short Description:

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.

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Product Detail

Product Tags

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.

NdFeB Production Process

Coating Introduction

Surface	Coating	Thickness μm	Color	SST Hours	PCT Hours
Nickel	Ni	10～20	Bright Silver	>24～72	>24～72
Nickel	Ni+Cu+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)	---

Physical Characteristics

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