1.Product Information
2.Magnet common shapes
3.Magnetizing method
4.Available Coatings Of Sintered NdFeB Magnets
5.Magnet grade performance distribution chart
6.The package
7.Production Process
8.Testing Equipment
9.Certificate
10.Production execution standard reference
Product Information | ||
Product name | Permanent, Nd Rectangular Block magnet, Neo Rectangular Block magnet, Rare earth Rectangular Block magnet | |
Material | Neodymium iron boron, Neo Magnet, Nd Magnet, Rare earth Magnet | |
Grade & working Temperature | Grade | Max Operating Temperatures |
N35-N54 | 80°C (176°F) | |
35M-52M | 100°C (212°F) | |
35H-50H | 120°C (248°F) | |
33SH-48SH | 150°C (302°F) | |
28UH-45UH | 180°C (356°F) | |
28EH-42EH | 200°C (392°F) | |
28AH-40AH | 230°C (446°F) | |
Shape | Block or Rectangular or Cuboid, but Disc, Ring, Cylinder, Arc and Irregular shape are also available | |
Coating | Ni, Ni-Cu-Ni, Electroless Nickel, Zinc, Colored Zinc, Epoxy, Passivation, Phosphated, Everlube, Au, Ag, Sn etc. | |
Magnetized direction | Thickness Magnetized, but Axially, Diametrical, Multipoles and Radial magnetization are also available, Customized magnetization is welcome. | |
Application | Servo motor,Brushless motor, Linear Motor, Automotive Motor, HEV& EV motor, Robot Driving Motor, Inverter Compressor Motor , Rail Transit Traction Motor, Consumer Electronics, Wind turbine, Energy-saving Elevator, Loudspeaker, Magnetic switch, VCM, MRI, Magnetic separator, sensor etc. | |
Certificate | ISO/TS 16949, ISO9001, ISO14001, RoHS, REACH | |
Packing | Standard sea or air packing, such as carton, wooden box, pallet etc. | |
Lead time | 7 days for samples, 15-20 days for mass production. | |
Transportation | All shipping methods are available: courier (TNT, DHL, FedEx, UPS), air or sea. Shipper or freight forwarder can be appointed by either purchaser or TC. |
2.Magnet common shapes
1. Block Magnet | ||||||
Sort | Specification | Recommend Size | Extreme size | Dimension | Tolerance | Parallelism |
0.5≤L≤10 | ±0.03 | 0.04 | ||||
10≤L≤30 | ±0.05 | 0.06 | ||||
Cuboid type | L | ≤150 | ≤200 | 30≤L≤50 | ±0.08 | 0.08 |
W | ≤100 | ≤100 | L>50 | ±0.1 | 0.1 | |
T | ≤55 | ≤70 | ||||
2. Arc/C Magnet | ||||||
Sort | Specification | RecommendSize | Extreme size | Part | Dimension | Tolerance |
Thickness | T≤10 | ±0.04 | ||||
10≤T≤30 | ±0.05 | |||||
C type | L | ≤150 | ≤200 | Length | L≤10 | ±0.03 |
W | ≤100 | ≤100 | 10≤L≤30 | ±0.05 | ||
T | 2≤T≤30 | 1.5≤T≤50 | 30≤L≤50 | ±0.08 | ||
H | 3≤H≤50 | 3≤H≤60 | L>50 | ±0.1 | ||
Chordal Length | W≤50 | ±0.05 | ||||
W>50 | ±0.06 | |||||
3. Cylinder Magnet | ||||||
Sort | Specification | Recommend | Extreme size | Outter Diameter | Tolerance | Parallelism |
D≤10 | ±0.02 | 0.03 | ||||
Size | 10≤D≤30 | ±0.03 | 0.03 | |||
Cylinder type | D | ≤100 | ≤150 | D>30 | ±0.04 | 0.04 |
T | 0.5≤T≤45 | 0.5≤T≤60 | ||||
4. Ring Magnet | ||||||
Sort | Specification | Inner Diameter | Tolerance | Coaxiality | ||
d≤10 | ±0.04 | 0.06 | ||||
10≤d≤30 | ±0.05 | 0.06 | ||||
Ring type | D | 30≤d≤50 | ±0.06 | 0.08 | ||
d | d>50 | ±0.08 | 0.1 | |||
T |
3.Magnetizing method
4.Available Coatings Of Sintered NdFeB Magnets
Available Coatings Of Sintered NdFeB Magnets | |||||
Coating | Thickness | Color | PCT | SST | Characteristic |
Zn | 4-8um | Bright Blue | / | >24H~48H | Regular Protection Applicable to most products |
Colored ZN | 4-8um | Shining Color | / | >48H-72H | Excellent salt spray resistance,Excellent adhesion |
NiCuNi | 10-20um | Bright Silver | >48H~72H | >24H-72H | Excellent humidity,heat&salt spray resistance |
Electroless Nickel | 10-20um | Bright Silver | >72H | >96H | Excellent humidity,heat&salt spray resistance |
Black Nickel | 10-20um | Bright Black | >72H | >48H-96H | Excellent humidity. heat xsalt spray resistance |
Sn | 10-20um | Silver | >48H | >36H-72H | Excellent humidity. heat&salt spray resistance |
Epoxy | 10-20um | Black or Grey | / | >72H~108H | Excellent humidity,heat&salt spray resistance,excellent adhesion |
Phosphated /Passivation | <=1um | Dark Grey | / | ≤2.5H Emerge in 3%Nad lovor | Temporary Protection |
Everlube | 8-20um | Yellow | >72H | >96H | Excellent salt spray resistance,Excellent adhesion |
Golden | 10-15um | Golden | >48H | >12H | Good looking |
5.Magnet grade performance distribution chart
6.The package
1.The magnets are separated by plastic sheets for easy operation when removing Each block is wrapped in a plastic bag to prevent corrosion. | 2.Insert foam board, iron board, carton from inside to outside at once. Used for buffering, magnetic isolation and protection | 3. The small size magnet carton is individually packaged to ensure safe and convenient transportation, storage, and use. |
4.The outer layer of the carton is fixed with plastic steel straps | 5.After packaging, measure the magnetic field intensity outside the carton to ensure compliance with air transport standards. | 6. Recycled wooden pallets, wrapped with waterproof membrane to prevent moisture and loss during sea transportation. |
7.Production Process
8.Testing Equipment
9.Certificate
10.Production execution standard reference
Process | Executive standard | Process record | Test record |
Order evaluation | CP / Products specification | Order review record | / |
Ingredients | CP / Raw-materials standard/ SOP | Preparation record Circulation card | Raw-materials test the reports The balances daily check record The balances calibrate record |
Smelt | CP / Strip casting standard /SOP | Strip casting process record | SC test the report |
Hydrogen break | CP / Hydrogen decrepitation standard / SOP | Hydrogen decrepitation process record Powder circulation card | / |
Jet mill | CP / Jet milling decrepitation standard / SOP | Jet milling process record | Particle size test report |
Forming | CP / Pressing standard SOP | Pressing process record Pressing block circulation card | / |
Sintering | CP / Sintering standard SOP | Sintering process record | NdFeB materials performance test report Size and density test report Surface test report Approval warehouse card |
Machining | CP Machining draw | Picking record Send the machining record | Machining products test report |
Surface treatment | CP Surface treatment draw | Send the surface treatment record Circulation card | Finished goods size hand surface test report |
Magnetization and packaging | CP / Packing specification SOP | Magnetized record Packing record | Finished goods performance test report |