硅铁磁粉芯


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铁镍磁粉芯


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铁硅铝磁粉芯


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合金磁粉芯

 
合金磁粉芯
       合金磁粉芯是由铁基合金材料制成的粉末,经表面绝缘包覆与无机粘合剂混合压制然后再进行高温处理而成的一种软磁材料。合金磁粉芯内有均匀的气隙分布特征,拥有许多优异的磁特性、高电阻率低磁滞和低涡流损耗,以及在直流和交流条件下极佳的电感稳定性。依据其合金成份的不同,主要有铁硅铝磁粉芯(Sendust Cores)、硅铁磁粉芯(Si-Fe Cores)、铁硅镍磁粉芯(Neu Flux Cores)、高磁通铁镍磁粉芯(High Flux Cores)、铁镍钼磁粉芯(MPP Cores)五大类。
 

一般信息
 
 
   
     典型的电感系数是在1000圈下测得的值,我们电感系数偏差范围是±8%。磁力特性曲线,均有±10%的典型宽限度,而磁芯损耗曲线就有±15%的典型宽限度。
    It means apparent indectance value in mH per 1000 turns,The tolerance of apparent inductance for our standard cores is ±8%.The Magnetic Characteristic curves shown have a typical tolerance of ±10%,The curves on Core Loss characteristics have typical tolerance of ±15%。
 
 
Turns 圈数
1000
500
300
100
50
25
Actual Inductance电感系数
+0.0%
+0.5%
+1.0%
+3.0%
+5.0%
+8.5%
 
     
      本公司生产的合金磁粉芯环型磁芯,其表面均有改良的环氧树脂涂层并符合欧盟RoHS环保要求,其涂层耐温可达H级,涂层可抵抗大多数清洗剂的擦洗,但过度接触某些溶剂会产生不良影响,各种涂层在50Hz下的最小介电强度为600Vrms。
      表面涂层绝缘强度的测试是,将两片导电板分别放在磁粉芯的两个端面,用50Hz,1250V(AC有效电压)测试电压, 时间为5秒。
   KDM Magnetic Powder Cores Series are coated by improved epoxy that can resist high temperature up to grade,The coating also complies with the requirement of environmental protection and RoHS.The finishing has a minimum dielectric strength of 600Vrms at 50Hz and can resist most cleaning solvents.However,extended exposures to certain solvents may have detrimental effects.
The method of testing the insulation strength of the surfacing coating:put two electroplates on tne corners of the cores'two surfaces,app;ies 50Hz,1250Vrms and last for 5 seconds.
 
 
 

      由于磁粉芯是密度比较高的产品,任何不正确的搬运或碰撞都可能导致磁芯损坏,如果磁芯触击一个坚硬的平面,磁芯表面涂层会出现裂痕或碎裂。磁粉芯比其他产品重,一般本公司的载货箱重量在15-20kg,存放时切勿压叠超过5箱货物,以免压碎底层货物。由于磁粉芯内有均匀的气隙分布,使磁粉芯不能存储静电电荷,所以静电释放对磁芯的影响,如E型、I型、管状型、U型等。存放时应充分考虑防潮和防雨的问题,储存时间不宜过长,我们建议使用前的仓储期间不要打开原产品包装,防止产品锈蚀。

     KDM has designed standard packaging for shipment to customers around the world.We recommend the cores remain in the original factory packaging and be sheltered from rain or high humidity since uncoated iron can eventually form surface tust.Magnetic powder cores tend to be heavier than many other products and special conside ration must be given to the weight of the carton.Do not stack more than 5 cartons high to avoid crushing the bottom cartons.Our normal packing box's weight is form 15 to 20kg.Please be aware the cores are quite dense and package size can be deceivingly heavy.Damage will occur to cores if they are dropped on a hard surface then a crack or chip can result on tne core coating.Special consideeration for electrostatic discharge is not necessary with magnetic powder cores since they have a 'distributed air gap structure' and will not retain an electrostatic charge.Finally,as with most magnetic material.magnetic powder cores need to be kept free of metal shacings,oil,solvents,dirt,dust and acides.


 
 
Property
Composition

Core Loss(mW/cm3)
@
1000Gs/50kHz

DC-Bias(%µe)@
1000
Flux Density(Sat).
Curie Temp
Temp Stability
Color Code
Relative cost
Iron Powder
99%Fe
2000
40
12000Gs
750℃
Medium
Mix Color
0.3
Sendust
85%Fe,9%Si,6%Al
300
45
10500Gs
600℃
Good
Black
1
Si-FeTM
94%Fe.6%Si
750
70
16000Gs
700℃
Good
Blue
1.5
High Flux
50%Fe,50%Ni
400
78
15000Gs
700℃
Better
Khaki
4
MPP
17%Fe,9%Ni,2%Mo
280
50
7500Gs
400℃
Best
Gray
6

*Amorphous
Powder Cores

78%Fe,9%Si,13%B
420
68
14000Gs
400℃
Poor
-
3.5
Neu FluxTM
85%Fe,15%Si-Ni
480
78
16000Gs
650℃
Best
Browm
2
每种测试材料均采用了相同的有效磁导率为60µ.All test are based on 60µ material.
*只做参考。KDM没有生产。For reference only,not in KDM product.
 
 
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