*力士樂Rexroth線圈

電磁鐵
于兩個磁場互相疊加,從而使螺線管的磁性大大增強。為了使電磁鐵的磁性更強,通常將鐵芯制成蹄形。但要注意蹄形鐵芯上線圈的繞向相反,一邊順時針,另一邊必須逆時針。如果繞向相同,兩線圈對鐵芯的磁化作用將相互抵消,使鐵芯不顯磁性。另外,電磁鐵的鐵芯用軟鐵制做,而不能用鋼制做。否則鋼一旦被磁化后,將長期保持磁性而不能退磁,則其磁性的強弱就不能用電流的大小來控制,而失去電磁鐵應(yīng)有的優(yōu)點。
電磁鐵是可以通電流來產(chǎn)生磁力的器件,屬非*磁鐵,可以很容易地將其磁性啟動或是消除。例如大型起重機利用電磁鐵將廢棄車輛抬起。
當電流通過導線時,會在導線的周圍產(chǎn)生磁場。應(yīng)用這性質(zhì),將電流通過螺線管時,則會在螺線管之內(nèi)制成均勻磁場。假設(shè)在螺線管的中心置入鐵磁性物質(zhì),則此鐵磁性物質(zhì)會被磁化,而且會大大增強磁場。
一般而言,電磁鐵所產(chǎn)生的磁場與電流大小,線圈圈數(shù)及中心的鐵磁體有關(guān)。在設(shè)計電磁鐵時,會注重線圈的分布和鐵磁體的選擇,并利用電流大小來控制磁場。由于線圈的材料具有電阻,這限制了電磁鐵所能產(chǎn)生的磁場大小,但隨著超導體的發(fā)現(xiàn)與應(yīng)用,將有機會超越現(xiàn)有的限制

*力士樂Rexroth線圈

德國REXROTH力士樂線圈產(chǎn)品部分型號如下
線圈 R900071030  
線圈 R900071037 
線圈 R900723303
線圈 R900021389
線圈 R900019793
線圈 R900021562
R901087981
R901087981
R901085466
R901084451
R901083065
R901081740
R901080794
R901060817
R901058832
R901050010
R901049962
R901037025
R901022180
R901022174
R901017601
R901017599
R901017592
R901017590
R901017511
R901017496
R901011812
R901009106
R901006187
R901003055
R901003053
R901003044
R901003026
R901002932
R901002558
R901002319
R900991798
R900991797
R900991678
R900991346
R900991121
R900989709
R900989707
R900989705
R900849367
R900845871
R900754548
R900729190
R900729189
R900723304
R900723303
R900723302
R900723301
R900721221
R900704588
R900704587
R900704261
R900704191
R900340202
R900336411
R900315819
R900315818
R900230636
R900229884
R900227426
R900225911
R900222314
R900221884
R900220856
R900219604
R900219603
R900219602
R900219601
R900217815
R900217813
R900217812
R900217809
R900217808
R900215053
R900213415
R900213337
R900208923
R900207360
R900207086
R900206363
R900206362
R900204522
R900203710
R900203422
R900069998
R900069997
R900065940
R900059070
R900058018
R900053136
R900022479
R900021864
R900021604
R900021599
R900021564
R900021563
R900021562
R900021554
R900021543
R900021465
R900021464
R900021463
R900021462
R900021453
R900021396
R900021393
R900021392
R900021391
R900021390
R900021389
R900021388
R900020212
R900020175
R900020174
R900020173
R900019861
R900019860
R900019859
R900019858
R900019857
R900019854
R900019853
R900019850
R900019849
R900019817
R900019816
R900019815
R900019797
R900019795
R900019794
R900019793
R900019792
R900010811
R900010586
R900010585
R900010500
R900010499
R900010478
R900010477
R900010454
R900010453
R902602623
R900877038
R900571360
8941016142
8941016132
8941016112
8941016102
8941012212
8941012202
8941004702
8941000522
8941000302
4402050330
1824484030
R901044595
R901017846
R900015610
R900013674
R900013159
R900005538
R900002460
R901017048
R901017037
R901017035
R901017026
R901017025
R901017022
R901017012
R901017011
R901017010
R900884671
R900860399
R900835857
R900779509
R900779504
R900779503
R900773031
R900310995
R900223890
R900221496
R900204858
R900082899
R900074683
R900064381
R900057453
R900032356
R900031155
R900023142
R900023126
R900021267

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