Siab -Qhov kub thiab txias ntawm AlNiCo cov ntaub ntawv
AlNiCo hlau nplaum khaws lawv cov hlau nplaum sib nqus mus txog 550℃(cov qhab nia nrum) lossis 450℃(sintered qib), deb tshaj NdFeB (80-}220 degree) thiab SmCo (250-350 degree). Qhov ntsuas kub hloov pauv ntawm Br rau AlNiCo yog -0.02 txog -0.03% / degree, kwv yees li ib feem tsib ntawm NdFeB (-0.11 txog -0.12% / degree). Rau cov ntawv thov xws li tsheb ceev sensors nyob ze lub tshuab tso pa, ntws ntsuas hauv cov kab hluav taws xob, lossis aerospace actuators nyob ze ntawm lub cav, AlNiCo feem ntau yog tib txoj kev xaiv.
Txawm li cas los xij, AlNiCo muaj qis coercivity (Hcj feem ntau 0.5-1.5 kOe) piv rau NdFeB (12-30 kOe). Qhov no txhais tau tias AlNiCo hlau nplaum tau yooj yim demagnetized los ntawm cov teb rov qab los yog kev tuav tsis raug. Lawv yuav tsum tau hlau nplaum tom qab sib dhos hauv lawv qhov kawg sib nqus Circuit Court, tsis yog ua ntej. Tsis tas li ntawd, AlNiCo qhov qis Hcj ua rau nws tsis haum rau cov motors uas muaj zog stator teb los yog rau cov ntawv thov nrog cov hlau nplaum ruaj khov.
Vim li cas Cast AlNiCo yog qhov zoo tshaj plaws rau cov Geometry nyuaj
Cam khwb cia AlNiCo yog tsim los ntawm pouring molten alloy (kwv yees 1500 degree) rau hauv xuab zeb los yog ceramic pwm. Cov txheej txheem no tso cai rau cov duab sib txawv: horseshoes, U- cov ntaub ntawv, rings nrog cov hniav sab hauv, lossis cov cim kev cai embossed ntawm lub ntsej muag ncej. Yam tsawg kawg nkaus feature loj: 2-3mm. Qhov hnyav tshaj plaws rau ib thooj: mus txog 25kg.
Tooling cost for cast AlNiCo ranges from $800-3000 per pattern, depending on complexity. For small quantities (50-500 pieces), cast AlNiCo is expensive due to machining requirements (the as-cast surface is rough, typically requiring grinding on critical faces). For large volumes (>2000 daim), cam khwb cia AlNiCo ua tus nqi- siv tau vim tias cov cuab yeej amortizes thiab lub sij hawm casting luv luv (2-5 feeb ib thooj).
Daim ntawv thov: sib nqus chucks, tuav cov hlau nplaum, nrov nrov hlau nplaum, sib nqus pulleys, sensors rau huab cua kub.
Kev txhim kho kev siv dag zog hauv Sintered AlNiCo
Sintered AlNiCo siv cov hmoov hlau nias rau hauv qhov tuag (zoo ib yam li cov hlau nplaum ceramic) ces sintered ntawm 1200-1300℃. Lub resulting qauv yog finer-grained thiab ntau homogeneous tshaj cam khwb cia. Mechanical zog: tensile zog 250-350 MPa vs. cam khwb cia AlNiCo 150-200 MPa. Sintered AlNiCo kuj nthuav tawm qhov porosity tsawg, txo qhov kev pheej hmoo ntawm kev xeb hauv qhov chaw ntub dej.
Dimensional tolerances: sintered AlNiCo ua tiav ± 0.1mm ntawm nias qhov ntev yam tsis muaj kev sib tsoo. Rau siab - daim ntawv thov precision xws li magnetic encoders lossis Hall sensor lub hom phiaj, sintered AlNiCo yog qhov nyiam. Qhov loj tshaj plaws: feem ntau 50-60mm nyob rau hauv txhua qhov ntev vim muaj kev txwv nias. Loj dua li ntawd, yuav tsum tau casting.
Cov lus sib piv: Cast vs. Sintered AlNiCo – Sib nqus & Mechanical Specs
| Khoom | Cast AlNiCo (Qib 5 / LNG40) | Sintered AlNiCo (Qib 5S / LNGT40) | Engineering Impact |
|---|---|---|---|
| Residual Induction, Br (kGs) | 10.5 – 11.2 | 8.0 – 9.5 | Casting muab 15-25% ntau dua flux |
| Intrinsic Coercivity, Hcj (kOe) | 0.6 – 0.7 | 0.5 – 0.6 | Ob leeg yooj yim demagnetized; kov tom qab sib dhos |
| Max Zog Khoom, BHmax (MGOe) | 7.5 – 8.5 | 3.5 – 5.5 | Cast khw muag khoom ~ 2x sib nqus zog ib ntim |
| Max ua haujlwm kub (degree) | 550 | 450 | Cam khwb cia rau ultra{0}}siab temp (gas turbines) |
| Tensile zog (MPa) | 150 – 200 | 250 – 350 | Sintered resists tawg nyob rau hauv vibration |
| Dimensional kam rau ua (raws li -ua) | ± 0.5-1.0 hli | ± 0.1-0.2 hli | Sintered haum rau precision sib dhos tsis muaj kev sib tsoo |
| Tus nqi cuab yeej (ib - sijhawm) | $800 - 3000 ib tus qauv | $300 - 1000 rau ib tug tuag | Cam khwb cia cuab yeej kim dua; zoo dua rau siab ntim |
| Yam tsawg kawg nkaus Order kom muaj nuj nqis | 500 pcs | 200 pcs | Sintered rau cov khoom me me |
| Tej kev siv | Chucks, tuav hnyav, hais lus nrov, siab -temp sensors | Encoders, sensors, precision tuav, magnetostrictive li |
Rau cov engineers tsim xav tau AlNiCO hlau nplaum nrog cov duab kev cai - suav nrog ntau-ncej magnetization thiab threaded qhov - thov xa mus rau peb cov khoom Cast AlNiCo Magnet ntawm peb lub vev xaib. Peb muab ob qho tib si cam khwb cia thiab sintered qib nrog tag nrho cov tshuaj muaj pes tsawg leeg daim ntawv pov thawj (ISO 9001: 2015).
Txhawm rau sib tham txog koj daim ntawv thov qhov kub thiab txias, xav tau Br, thiab qhov ntev ntev, hu rau peb pawg neeg ua haujlwm AlNiCo. Peb muab free demagnetization simulation rau koj magnetic circuit.
Cov lus nug nquag
Q: Kuv puas tuaj yeem tsim cov hlau nplaum AlNiCO ua ntej tso rau hauv kuv lub rooj sib txoos?
A: Tsis yog. AlNiCO qhov kev coercivity qis txhais tau tias nws yuav ua rau qee qhov demagnetize thaum tuav thiab sib dhos. Ib txwm sib sau ua ntej, ces magnetize nyob rau hauv qhov chaw uas siv lub mem tes magnetizer. Peb muab rau ntawm - qhov kev pabcuam magnetization rau qhov ntim xaj.
Q: Qib twg ntawm AlNiCO yog qhov zoo tshaj plaws rau lub log sib nqus encoder ua haujlwm ntawm 200 degree?
A: Siv sintered AlNiCO Qib 5S (LNGT40). Nws muab txaus Br (8.5-9.0 kGs) thiab nruj dua kam rau ua (± 0.1mm) rau cov ncej meej. Rau qhov kub siab tshaj 450 degree, hloov mus rau cam khwb cia Qib 8 (LNG44) nrog Br txog 11.2 kGs.
Q: Puas yog AlNiCO hlau nplaum corrosion{0}} tiv taus yam tsis muaj txheej?
A: Yog. AlNiCO ib txwm tsim cov txheej txheem oxide passive thiab tsis tas yuav Ni-Cu-Ni lossis epoxy txheej. Txawm li cas los xij, rau cov dej ntsev los yog tshuaj lom neeg, peb pom zoo kom epoxy dip (10-20μm) kom tiv thaiv alkaline nres.
