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  1. metalparts

    Inquiry on Non conductive Vaccum Metalizing (NCVM)

    Dear all! Curently, our company is changing the plating process of one of our items from EP - PL (electro plating) to NCVM. i have search some ideas for this NCVM and get some sketch as followed: 1. Base coating 2. Vaccume metalizing - using HVLP guns 3. Top coating However, those pieces can...
  2. metalparts

    Inquiry on NBC

    Dear IRstuff! Actually, it is just the materials used in the Headphone named Screen, and the specification cites its materials: NBC, i have no idea how to learn about this. Pls help
  3. metalparts

    Inquiry on NBC

    Dear all! Has anybody known about the NBC materials? i have checked this in the Internet but got no information, pls advise what is its compound and its function? if possible, pls advise me in the way it is produced too. thanks a lot Wish you nice day
  4. metalparts

    Difference of isotropic and anisotropic magnet

    Dear IRstuff and EdStainless. thanks for kind help very much
  5. metalparts

    Difference of isotropic and anisotropic magnet

    Dear all! pls tell me the difference of isotropic and anisotropic magnet. As far as i know they are difference in the way they are produced: Isotropic magnet is produced without the magnetic force but anisotropic magnet. Regarding to their magnetic property, are they much different? One more...
  6. metalparts

    Inquiry on the difference of Pole piece, T yoke and Wahser

    Dear all! Would somebody help me diiferentiate the Pole Piece, T Yoke and washer (all of them are headphone parts)? I know what the Pole piece is, but have no idea what the T yoke and Washer are? pls advise me Thanks a lot Wish you nice weekdays
  7. metalparts

    Close proximity magnets and demagnetism

    Dear! I keep the same idea with SREID, if the Magnets has the same magnetic properties, it is hard to be demagnitized .
  8. metalparts

    Inquiry on Chromium and SPEC

    Dear all!! Could you pls show me the exact name of this product? i have checked in the Net for days to find the supplier for this one, but got stuck. pls advise me if you know where to buy it, and its true name (in the Spec stated Yoke, but i found many kinds of Yoke which is not like this one...
  9. metalparts

    Inquiry on Chromium and SPEC

    Thanks EdStainless and MagMike My company is not specilized in Yoke at all, it is just one of the materials used for the capsule, I just want to study this one on our company specification. By the way, are you happened to know any website on the Yoke[about its function, materials...], pls show...
  10. metalparts

    Inquiry on Chromium and SPEC

    Dear all! I have question about the coating materials: Chromium. In the drawing, I read that there is the CM2 (colored Chromium - which is explained by the Engineer in my company). is that the colored Chromium much functionally different to normal Chromium? is that much costly than normal...
  11. metalparts

    Material Coating on Magnet, Hci vs Hcb, Pole piece function

    Thanks EdStainless for your kind help. Now i know the main function of the pole piece, but there are some questions not be explained yet, pls advise me
  12. metalparts

    Material Coating on Magnet, Hci vs Hcb, Pole piece function

    Dear all! I have question about the coating materials. Currently, the applied coating for magnets of our company are Ni, Cu-Nib 10, Zn. Some people said the Zn itself is not as strong as Ni and Cu-Nib(the coating thickness stays the same: 10 mic) Is that correct? Regarding to the coating...
  13. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    thanks Magmike's and Leslie2000's comment. @Leslie2000: pls send me the reference to phungxuongtuan@gmail.com, thanks a lot. i supposed that adding new question in the same thread will save more space. Now i knew the rule, thanks for your reminding
  14. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    Sorry all, i miss this question. i knew the magnet has the coercivity (Hcb) to keep itself from being demagnetized, but there is something call intrinsic coercivity (Hci). i have checked the internet to get some information about it, but it sounds too tough to understand (there are formulars...
  15. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    Dear all! i have question about the coating materials. Currently, the applied coating for magnets of our company are Ni, Cu-Nib 10, Zn. Some people said the Zn itself is not as strong as Ni and Cu-Nib(the coating thickness stays the same: 10 mic) Is that correct? pls advise me. Regarding to...
  16. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    Thanks MagMike and thanks all, i am such a dummy about all these stuffs, i will learn more about the specification and asking u guys more. Thanks Have a noce day ^^
  17. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    thanks Edstainless and MagMike, so it means Al-Ni-Co does not give a chance T_T. how about the Fe-Cr-Co magnet? i have read on some website and checked that the characteristic is quite similar to Nd-Fe-B, could it stand a chance? the other thing is that, i noticed that in the material code of...
  18. metalparts

    Magnet Nd-Fe-B vs Al-Ni-Co

    Hi all! I am a new member of eng-tips.com ^^ my company is speciliazied in Earphone and the magnet NdFeB is in used. The Spec is like this OD 5 x ID 2 x 1 mm, BH(max)kj/m3: 263~279, Br: mT(SI) 1.17~1.22, Hc: kA/m 860 MIN, Ep-REFe by Zn or CU+Nib. I am curious about the Al-Ni-Co magnet,if i...

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