Sintered Ndfeb speak magnet
0.01~1.0 USD
| Min. Order: | 10 Piece/Pieces |
|---|---|
| Trade Term: | FOB |
| Payment Terms: | L/C, T/T, WU |
| Supply Ability: | 100TON/MONTH |
| Place of Origin: | Zhejiang |
Company Profile
| Location: | Ningbo, Zhejiang, China (Mainland) |
|---|---|
| Business Type: | Manufacturer |
Product Detail
| Model No.: | RM-D20 |
|---|---|
| Means of Transport: | Ocean, Air, experess |
| Application: | Speaker Magnet |
| Type: | Permanent |
| Composite: | Neodymium Magnet |
| Brand Name: | rainbow magnet |
| Shape: | Disc |
| Production Capacity: | 100TON/MONTH |
| Packing: | standard air cartons or sea package according |
| Delivery Date: | 7-30days |
Product Description
Sintered Ndfeb speak magnet:
Sintered Ndfeb speak magnet is made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure.
This material s currently the strongest type of permanent magnet in the world.
There are three main parameters for magnet.
the remanence Br (unit: Gauss), is the magnetic energy to measure the parameters of the magnetic field strength;
The main physical properties of Sintered Ndfeb speak magnet,
Sintered Ndfeb speak magnet with its excellent performance, abundant raw material and reasonable price is to be rapid development and wide application.
Sintered Ndfeb speak magnet is made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure.
This material s currently the strongest type of permanent magnet in the world.
There are three main parameters for magnet.
the remanence Br (unit: Gauss), is the magnetic energy to measure the parameters of the magnetic field strength;
coercivity Hc (unit Oersted ) is a measure of the anti-demagnetization ability parameters;
the BH(max) (unit Gauss-Oersted), is how much of the characterization can store energy in a physical quantity.
Sintered Ndfeb speak magnet has high Br,high Hcj,high (BH)max,and high stability,can pick up 660 times of own weight of heavy objects.
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.
See the follows Grade H Sintered Ndfeb speak magnetmagnetic energy
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 | ℃ | |
N33H | 1.14-1.17 | 11.4-11.7 | 820-876 | 10.3-11.0 | ≥1353 | ≥17 | 247-263 | 31-33 | ≤120 |
N35H | 1.17-1.21 | 11.7-12.1 | 860-907 | 10.8-11.4 | ≥1353 | ≥17 | 263-279 | 33-35 | ≤120 |
N38H | 1.22-1.26 | 12.2-12.6 | 907-947 | 11.4-11.9 | ≥1353 | ≥17 | 287-303 | 36-38 | ≤120 |
N40H | 1.26-1.29 | 12.6-12.9 | 907-947 | 11.4-11.9 | ≥1353 | ≥17 | 303-318 | 38-40 | ≤120 |
N42H | 1.30-1.33 | 13.0-13.3 | 907-947 | 11.4-11.9 | ≥1353 | ≥17 | 318-334 | 40-42 | ≤120 |
N44H | 1.33-1.36 | 13.3-13.6 | 907-947 | 11.4-11.9 | ≥1274 | ≥16 | 334-350 | 42-44 | ≤110 |
The main physical properties of Sintered Ndfeb speak magnet,
compare NdFeB and SmCo:the magnetic properties of rare earth magnet:
item | Js/T | (BH)m /KJ.m-3 | HA /MA.m-1 | Tc/℃ | RE/TM | TM |
Nd2Fe14B | 1.61 | 528 | 6 | 310 | 0.117 | Fe |
SmCo5 | 1.15 | 248 | 32 | 740 | 0.166 | Co |
Sm2Co17 | 1.56 | 480 | 8 | 890 | 0.105 | Co |
Sintered Ndfeb speak 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 markets
APPLICATION:
instrumentation,
electro-acoustic motor,
magnetic magnetization device
micro motors,
electronic industry.
the demagnetization curve of 40H grade in difference temperature:
the demagnetization curve of 40H grade in difference temperature: