Sintered neodymium magnets greatly
expand the applications of permanent magnets.They are widely used in
the fields of transportation,energy,communications,home
appliances,machinery and medical equipment and have become indispensible
function materials in manufacturing and daily life.
To meet the need for a strong magnetic force,we have developed moulds for producing large size of sintered NdFeB magnets.The existing moulds are allowed us to manufactures a maximum size of 240 mm.
Avaliable sizes and tolerance of neodymium magnet
Relying on
experienced production team and strong maching capability,most sizes of
neodymium magnet can be produced with very high quality,and the
tolerance can be controlled within +/-0.05mm or +/-0.1mm.
Round/disc neodymium magnet
| Magnetization Orientation | Diameter | Thickness |
| Axial Mangetized | OD ≦ 240mm | T ≦ 80mm |
| Diametrical Magnetized | OD ≦ 80mm | T ≦ 60mm |
Block neodymium magnet
| Length | Width | Thickness |
| 1mm ≦ L ≦ 240mm | 1mm ≦ L ≦ 100mm | 1mm ≦ L ≦ 80mm |
Ring neodymium Magnet
| Magnetization Orientation | Outer Diameter | Inner Diameter | Thickness |
| Axial Mangetized | OD≦ 240mm | ID ≧ 1 | T≦ 80mm |
| Diametrical Magnetized | OD≦ 80mm | ID ≧ 1 | T≦ 60mm |
Different grade of sintered neodymium magnet
Basis
on different temperature resistrance,the neodymium magnet are divided
into N,M,H,SH,UH,EH,AH series,and the corresponding maximum operating
temperature is 80℃,100℃,120℃,150℃,180℃,200℃,220℃.
In
the same serires,the higher the grade of NdFeB magnet,the more
magnetism it is.For example,in N series,N52 grade have more magnetic
power than N35 grade,and the N55 grade is the strongest one.
For
initial projects,we are happy to provide magnetic technology support
and made magnet samples according to your requirements for prototyping
or testing needs.
Check the properities of sintered neodymium magnet.
Surface treatment of sintered neodymium magnet
For general use,zinc and nickel plating are most common,and the salt spray test can reach 24 hours to 48 hours.
Epoxy or NiCu+Epoxy Coating have a better corrosion resistance,the salt spray test can reach 72 hours.
| Coating Type | Thickness | Clors | Resistance | ||
| PCT/HAST | SST | Temp.& Humi. | |||
| Zn (White Zn) | ≥5 μm | Bright Blue | —— | ★★ | ★★★ |
| Zn (Color-plated Zn) | ≥5 μm | Shining Color | —— | ★★★ | ★★★★ |
| Ni+Cu+N | ≥15 μm | Silver | ★★★ | ★★★★ | ★★★★★ |
| Ni+Cu+Ni+Cr | ≥15 μm | Silver | ★★★★ | ★★★★ | ★★★★★ |
| Ni+Cu+Ni+Sn | ≥15 μm | Silver | ★★★★ | ★★★★ | ★★★★★ |
| Chemic Ni | ≥5 μm | Silver | ★★★★ | ★★★★★ | ★★★★★ |
| Epoxy | ≥12 μm | Black | ★★★ | ★★★★★ | ★★★★★ |
| NiCu+Epoxy | ≥15 μm | Black | ★★★ | ★★★★★ | ★★★★★ |
| Passivated | ≤2 μm | Silver Grey | —— | —— | ★★★ |
| Phosphated | ≤2 μm | Silver Grey | —— | —— | ★★★ |
Magnetization orientation of neodymium magnet
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| Axial Magnetized | Diametrical Magnetized | Axial Magnetized | Diametrical Magnetized |
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Axial Magnetized |
Diametrical Magnetized | Axial Magnetized (N-S) | Axial Magnetized (S-N) |
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| Through Thickness | Through Width | Through Length | Diametercal Magnetized |
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Diametrical Magnetized (N-S) |
Diametrical Magnetized (S-N) |
Through Thickness | Through Width |
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Radial Magnetized 2 poles |
Radial Magnetized 8 poles |
Radial Magnetized inclined 8 Poles |
4 Poles |
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+86-769-88015513
info@junhuimagnet.com.cn