|Total||6 NdFeB magnets, samarium cobalt magnets, Alnico magnets|
|1||310°C||80°C||N-( N30,N33,N35, N38, N40, N42, N45, N48, N50,N52,N55)|
|2||340°C||100°C||M-(N33M,N35M, N38M, N40M,N42M, N45M, N48M,N50M)|
|3||340°C||120°C||H-(N33H,N35H, N38H, N40H, N42H, N44H,N46H,N48H)|
|4||340°C||150°C||SH-(N30SH, N33SH, N35SH, N38SH, N40SH, N42SH,N45SH)|
|5||340°C||180°C||UH-(N30UH, N33UH, N35UH, N38UH,N40UH)|
|6||350°C||200°C||EH-(N28EH, N30EH, N33EH, N35EH,N38EH)|
|7||350°C||220°C||AH-(N28AH, N30AH, N33AH)|
|total||7 neodymium iron boron magnets NdFeB magnets, NIB magnets, NEO magnets|
According to standards, visual imperfections such as hairline cracks, porosity and minor chips are commonly found in sintered metallic magnets. A chipped edge is considered acceptable if no more than 10% of the surface is missing. Cracks are acceptable as long as they do not extend across more than 50% of pole surfac.
Most of customers request NdFeB magnet with high maximum working temperature, such as 38SH, 35EH, 35UH, use some small arc magnets to form a ring magnet, magnetization direction is through diameter, N-S and S-N. And some request other shapes such as segment, wedge shape, block, ring, or special shape.
|Ring Magnet||Outer Diameter(mm)||160||140||50|
|Inner Diameter (mm)||2.6||1.8||0.5|
|Block Magnet||Length (mm)||150||50||30|
|Disc Magnet||Diameter (mm)||200||1.2||35-0.5|
|Total||4 neodymium (NdFEB) magnets, SmCo(SmCo1:5, SmCo2:17), Alnico magnets|
Alnico magnets are manufactured by a cast or sintered process. Production level cast Alnico magnets are produced by conventional foundry methods using resin bonded sand molds. The magnetic characteristics for some exotic grades of Alnico magnets are achieved during the casting operation and are due to the unique crystalline grain orientation developed during the process.
Sintered Alnico is a powdered metal and it is manufactured by compacting finely milled Alnico powder in a metallic mold. The resulting geometry is not fully dense and it must be sintered in a furnace to achieve a solid state.