Yuav cov hlau nplaum ruaj khov motors demagnetize ntawm qhov kub thiab txias?

Qhov kub ntawm lub phaj kawg ntawm lub tshuab hlau nplaum ruaj khov' s rotor tau mus txog 121 ° C lossis ntau dua. Nws yog speculated tias qhov kub ntawm lub rotor hlau nplaum yuav tsum siab tshaj 140 ° C.

Raws li cov ntaub ntawv txwv no, ib qho kev ua tsis tiav tau maj mam tsim:

Cov txheej txheem tawm tswv yim zoo ntawm cov hlau nplaum ruaj khov yog maj mam deteriorating. Ua ntej, qhov kub ntawm lub rotor nce, uas ua rau cov hlau nplaum hlau tsim me ntsis demagnetization hauv zos, uas ua rau cov hlau nplaum tas li tsis muaj zog, uas ua rau qhov nce tam sim no, ua rau lub zog hlau nplaum ruaj khov dais ntau dua demagnetization tam sim no. Qhov poob ntawm lub rotor thiab cov hlau nplaum yog ntxiv, kom qhov kub ntawm lub rotor yog ntxiv, thaj tsam ntawm demagnetization yuav loj dua thiab qhov tob ntawm demagnetization tob. Raws li pom hauv daim duab hauv qab no, cov hlau nplaum ua haujlwm ntawm txoj kab xiav. Cov kab no yog hu ua qhov rov qab nkhaus. Feem ntau, qhov nkhaus rov qab muaj ob ntu: ib qho ncaj thiab ib qho tsis ncaj. Qhov kev sib tshuam ntawm ob ntu yog hu ua lub hauv caug taw tes (lub hlwb ua rau lub hauv caug khoov). Nyob rau hauv qhov kev txiav txim ntawm lub sib nqus Circuit Court thiab tam sim no load ntawm lub tas mus li hlau nplaum lub cev muaj zog, qhov chaw ua hauj lwm (Y magnetic density-X coercivity) kev sib koom tes ntawm cov hlau nplaum yog ib qho point P, thaum lub point P siab tshaj qhov inflection point (raws li qhia. nyob rau sab laug hauv daim duab hauv qab no), Txawm hais tias qhov chaw sib nqus tsis muaj zog, thaum lub sijhawm tam sim no raug tshem tawm, cov hlau nplaum hlau nplaum tuaj yeem rov qab mus rau nws qhov kev ua haujlwm qub, uas yog, qhov demagnetization nkhaus yuav tsis hloov. Tab sis thaum lub chaw khiav hauj lwm P yog qis dua qhov inflection point (raws li qhia nyob rau hauv txoj cai nyob rau hauv daim duab hauv qab no), txawm tias lub load raug tshem tawm, qhov kev ua tau zoo ntawm cov hlau nplaum yuav tsis rov qab tag nrho. Hloov chaw, nws pib los ntawm taw tes P thiab rov qab mus rau taw tes Br1 (tus kab xiav dashed hauv daim duab) raws kab sib npaug mus rau thawj kab demagnetization. Obviously Br1 yog me dua qhov qub Br point, uas txhais tau hais tias cov hlau nplaum tsim tshiab demagnetization nkhaus muaj kev ua haujlwm tsis zoo. Nyob rau hauv thawj lub tswv yim, qhov no degradation yog irreversible, uas yog, irreversible demagnetization.

Lub tshuab hlau nplaum tas mus li tso cai rau cov hlau nplaum ua haujlwm siab tshaj qhov taw tes inflection, tab sis qhov inflection point ntawm hlau nplaum yog qhov ua haujlwm ntawm qhov kub thiab txias. Qhov siab dua qhov kub, qhov siab dua qhov inflection ntawm cov hlau nplaum, uas txhais tau hais tias qhov tshwm sim ntawm irreversible demagnetization yuav nce. Thaum cov dej ntws loj tshwm sim tib lub sijhawm, cov lus pom zoo demagnetization mechanism peb tau hais los saum toj no yog qhov tshwm sim. Raws li cov kev xav saum toj no thiab cov ntaub ntawv khaws tseg, peb qhov kev xav tau tsim:" Vim tias qhov kub thiab txias dhau, yam tsawg kawg yog ib feem ntawm lub tshuab hlau nplaum ruaj khov' qhov chaw ua haujlwm qis dua qhov taw tes inflection. , irreversible demagnetization tau tshwm sim, ua rau ib tug loj tam sim no, uas maj mam deepens lub non-reversible demagnetization. Lub Scope ntawm qhov project tsim ib lub voj voog vicious."