钕铁硼磁铁介绍及性能表

钕铁硼磁铁介绍及性能表第三代稀土永磁钕铁硼是当代磁铁中性能最强的永磁铁。它的BHmax值是铁氧体磁铁的5-12倍，是铝镍钴磁铁的3-10倍；它的矫顽力相当于铁氧体磁铁的5-10倍，铝镍钴磁铁的5-15倍，其潜在的磁性能极高，能吸起相当于自身重量640倍的重物。由于钕铁硼磁铁的主要原料铁非常便宜，稀土钕的储藏量较钐多10-16倍，故其价格也较钐钴磁铁低很多。钕铁硼磁铁的机械性能比钐钴磁铁和铝镍钴磁铁都好，更易于切割和钻孔及复杂形状加工。钕铁硼磁铁的不足之处是其温度性能不佳，在高温下使用磁损失较大，最高工作温度较低。一般为80摄氏度左右，在经过特殊处理的磁铁，其最高工作温度可达200摄氏度。由于材料中含有大量的钕和铁，故容易锈蚀也是它的一大弱点。所以钕铁硼磁铁必须进行表面涂层处理。可电镀镍(Ni), 锌(Zn), 金(Au), 铬(Cr), 环氧树脂(Epoxy)等。钕铁硼磁铁目前广泛应用于工业航空航天，电子，机电，仪器仪表，医疗等领域。而且非技术领域使用也越来越广泛，如吸附磁铁，玩具，首饰等。生产流程：配料-熔炼-制粉-成型-烧结-测试-机械加工-电镀-磁化-检验-包装钕铁硼磁铁磁性能 Magnetic Properties of NdFeB Magnets材料牌号剩磁Br矫顽力Hcb内禀矫顽力Hcj最大磁能积(BH)max工作温度TWTKGsKA/mKOeKA/mKOeKJ/m3MGOeCN351.17-1.2111.7-12.1876-89911.0-11.395512263-27933-3580N381.22-1.2612.2-12.6876-92311.0-11.695512287-30336-3880N401.26-1.2912.6-12.9876-92311.0-11.695512303-31838-4080N421.30-1.3313.0-13.3876-92611.0-11.695512318-33440-4280N451.33-1.3713.3-13.7876-92611.0-11.695512342-35843-4580N481.36-1.4213.6-14.2876-92611.0-11.695512358-38245-4880N501.41-1.4514.1-14.5828-90710.4-11.487611382-39848-5070N521.44-1.4814.4-14.8828-90710.4-11.487611394-41449.5-5270N35M1.17-1.2111.7-12.1892-91511.2-11.5111414263-27933-35100N38M1.22-1.2612.2-12.6907-93111.4-11.7111414287-30336-38100N40M1.26-1.2912.6-12.9907-94711.4-11.9111414303-31838-40100N42M1.30-1.3313.0-13.3907-94711.4-11.9111414318-33440-42100N45M1.33-1.3713.3-13.7907-95511.4-12.0111414334-35842-45100N48M1.36-1.4213.6-14.2907-95511.4-12.0111414358-38245-48100N50M1.41-1.4514.1-14.5907-97111.4-12.2111414382-39848-50100N33H1.14-1.1711.4-11.7820-87610.3-11.0135317247-26331-33120N35H1.17-1.2111.7-12.1860-90710.8-11.4135317263-27933-35120N38H1.22-1.2612.2-12.6907-94711.4-11.9135317287-30336-38120N40H1.26-1.2912.6-12.9907-94711.4-11.9135317303-31838-40120N42H1.30-1.3313.0-13.3907-94711.4-11.9135317318-33440-42120N45H1.33-1.3713.3-13.7907-94711.4-11.9135317342-35843-45120N48H1.36-1.4213.6-14.2907-97111.4-12.2127416358-38245-48110N30SH1.08-1.1210.8-11.2804-84410.1-10.6159220223-23928-30150N33SH1.14-1.1711.4-11.7820-87610.3-11.0159220247-26331-33150N35SH1.17-1.2111.7-12.1860-90710.8-11.4159220263-27933-35150N38SH1.22-1.2612.2-12.6907-94711.4-11.9159220287-30336-38150N40SH1.26-1.2912.6-12.9907-94711.4-11.9159220303-31838-40150N42SH1.30-1.3313.0-13.3907-94711.4-11.9159220318-33440-42150N45SH1.33-1.3713.3-13.7907-94711.4-11.9151219342-35843-45140N28UH1.04-1.0810.4-10.8780-8129.8-10.2199025207-22326-28180N30UH1.08-1.1210.8-11.2804-84410.1-10.6199025223-23928-30180N33UH1.14-1.1711.4-11.7820-87610.3-11.0199025247-26331-33180N35UH1.17-1.2111.7-12.1860-90710.8-11.4199025263-27933-35180N38UH1.22-1.2612.2-12.6907-94711.4-11.9199025287-30336-38180N40UH1.26-1.2912.6-12.9907-94711.4-11.9199025303-31838-40180N28EH1.04-1.0810.4-10.8780-8129.8-10.2238830207-22326-28200N30EH1.08-1.1210.8-11.2804-84410.1-10.6238830223-23928-30200N33EH1.14-1.1711.4-11.7820-87610.3-11.0238830247-26331-33200N35EH1.17-1.2111.7-12.1860-90710.8-11.4238830263-27933-35200N38EH1.22-1.2612.2-12.6860-90710.8-11.4238830287-30336-38200N30AH1.08-1.1210.8-11.2804-84410.1-10.6278635223-23928-30240注：工作温度是指该温度下的开路磁通不可逆损失小于或等于5%，测试温度为20C2CNote: Working temperature is tested under 20C2C, the inevitable loss of magnetic force is no more than 5%.一般物理性能 Typical physical properties参数 Parameter单位 Unit标称值 Standard Data居里温度(Tc) Curie TemperatureC310-380最高工作温度(Tw) Maximum Operating TemperatureC80-200硬度 HardnessHv620电阻率(r) Electrical ResistivityW.cm1.8x10-4-2.0x10-4密度(D) Densityg/cm37.50-7.65回复磁导率(m rec) Recoil Permeability1.05磁化场强度(Hs) Magnetization Field StrengthKoe30KA/m2400抗弯强度 Bending StrengthMpa295-345剩磁温度系数(aBr) Temp.Coefficient of Br%/C-0.11-0.12内禀矫顽力温度系数(aHcj) Temp.Coefficient of Hcj%/C-0.5-0.7尺寸范围 Dimension Range方块形 Block长度 Length宽度 Width厚度 Thickness最大 Maximum250.00mm180.00mm50.00mm最小 Minimum2.60mm1.80mm0.50mm圆环形 Ring外径 Outer Dia内径 Inner Dia厚度 Thickness最大 Maximum220.00mm80.00mm50.00mm最小 Minimum2.00mm1.50mm0.50mm圆饼形 Disc外径 Outer Dia厚度 Thickness最大 Maximum220.00mm50.00mm最小 Mini