wind generator ndfeb magnet is manufactured in a wide range of shapes, sizes and grades according customer's demand.
wind generator ndfeb magnet has a very high energy product and coercivity, can pick up 660 times of own weight of heavy objects.
The advantage is high cost-effective, with good mechanical properties, easy cutting; according customer's demand to manufacture in a wide range of shapes, sizes and grades.
Also have high Br,high Hcj,high (BH)max,and high stability become the important material of the world.
The shortcoming is the low of the Curie temperature and the temperature characteristics, easy to rust, oxidation, Sintered NdFeB's surface is usually required for plating such as zinc, nickel, silver, gold, etc., can also be done phosphorus treatment or spray epoxy resin to slow down the oxidation rate.
Pls see the compare of the coating's results:
Commonly type of coating | Coating thickness(um) | Neutral salt spray test | ||||
dark Ni | Cu | Shine Ni | Total | |||
Single-layer Ni | 25 | 25 | 24h | normal | ||
Double-layer Ni | 12 | 10 | 25 | 72h | better | |
Dark Ni-Cu–shine Ni | 6.25 | 8.75 | 10 | 25 | 120h | excellent |
See the follows Grade N Sintered NdFeB magnetic energy parameters
Grade | Residual Induction | Coercive Force | Intrinsic Coercive Force | Maximum Energy Product | Maximum Operating Temperature | ||||
Br | Hcb | Hcj | (BH)max | Tw | |||||
T | KGS | KA/m | KOe | KA/m | KOe | KJ/m3 | MGOe | ℃ | |
N35 | 1.17-1.21 | 11.7-12.1 | 876-899 | 11.0-11.3 | ≥955 | ≥12 | 263-279 | 33-25 | ≤80 |
N38 | 1.22-1.26 | 12.2-12.6 | 876-923 | 11.0-11.6 | ≥955 | ≥12 | 287-303 | 36-38 | ≤80 |
N40 | 1.26-1.29 | 12.6-12.9 | 876-923 | 11.0-11.6 | ≥955 | ≥12 | 303-318 | 38-40 | ≤80 |
N42 | 1.30-1.33 | 13.0-13.3 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 318-334 | 40-42 | ≤80 |
N45 | 1.33-1.37 | 13.3-13.7 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 342-358 | 43-45 | ≤80 |
N48 | 1.36-1.42 | 13.6-14.2 | 876-926 | 11.0-11.6 | ≥955 | ≥12 | 358-382 | 45-48 | ≤80 |
N50 | 1.41-1.45 | 14.1-14.5 | 828-907 | 10.4-11.4 | ≥876 | ≥11 | 382-398 | 48-50 | ≤70 |
N52 | 1.44-1.48 | 14.4-14.8 | 828-907 | 10.4-11.4 | ≥876 | ≥11 | 394-414 | 49.5-52 | ≤70 |
The main physical properties of wind generator ndfeb magnet
magnetic properties | Parameters |
Density /g.cm3 Vickers Hardness HV Resistivity /υΩ.cm Compressive strength/N.mm-2 Coefficient of Thermal Expansion (C⊥)/K-1 Coefficient of Thermal Expansion (C∥) /K-1 | 7.45 570 150 780 -4.8X10-6 -3.4X10-6 |
wind generator ndfeb magnet with its excellent performance, abundant raw material and reasonable price is to be rapid development and wide application.
Also becoming increasingly popular across a wide range of novelty products for market
APPLICATION:
wind generator
wind generator
