Nicr puag ncig tooj liab raws liCov hlau 180Qib Kawm Qib Siab Insulated Enameled Copper Wire

1. Cov Khoom Siv Dav Dav

1)

Manganinyog ib qho hlau sib xyaw ua ke ntawm feem ntau 84% tooj liab, 12% manganese, thiab 4% nickel.

Cov hlau manganin thiab cov ntawv ci yog siv rau hauv kev tsim cov resistors, tshwj xeeb tshaj yog ammeter shunt, vim nws qhov kub thiab txias coefficient ntawm kev tiv thaiv thiab kev ruaj khov ntev. Ntau cov Manganin resistors tau ua haujlwm raws li tus qauv kev cai lij choj rau ohm hauv Tebchaws Meskas txij li xyoo 1901 txog 1990. Cov hlau manganin kuj tseem siv ua tus neeg coj hluav taws xob hauv cov kab ke cryogenic, txo qis kev hloov pauv cua sov ntawm cov ntsiab lus uas xav tau kev sib txuas hluav taws xob.

Manganin kuj tseem siv rau hauv cov ntsuas rau kev kawm txog cov nthwv dej siab (xws li cov uas tsim los ntawm kev tawg ntawm cov khoom tawg) vim nws muaj qhov rhiab heev qis tab sis muaj qhov rhiab heev hydrostatic siab.

2)

Constantanyog ib qho hlau tooj liab-nickel uas tseem hu uaEureka, Ua Ntej, thiabNkoj. Nws feem ntau muaj 55% tooj liab thiab 45% nickel. Nws lub ntsiab feature yog nws resistivity, uas yog tas li ntawm ntau yam kub. Lwm cov alloys nrog cov coefficients kub qis zoo sib xws paub, xws li manganin (Cu₈₆Mn₁₂Ni₂).

Rau kev ntsuas ntawm cov kab mob loj heev, 5% (50 000 microstrian) lossis siab dua, annealed constantan (P alloy) yog cov khoom siv grid feem ntau xaiv. Constantan hauv daim ntawv no yog ductile heev; thiab, hauv qhov ntev ntawm 0.125 nti (3.2 hli) thiab ntev dua, tuaj yeem raug strained rau > 20%. Nws yuav tsum tau borne hauv siab, txawm li cas los xij, tias nyob rau hauv siab cyclic strains P alloy yuav ua rau muaj qee qhov kev hloov pauv resistivity tas mus li nrog txhua lub voj voog, thiab ua rau muaj kev hloov pauv xoom sib xws hauv lub strain gauge. Vim yog qhov cwj pwm no, thiab qhov nyiam rau kev ua tsis tiav grid ua ntej nrog rov ua dua straining, P alloy feem ntau tsis pom zoo rau cov ntawv thov cyclic strain. P alloy muaj nrog STC tus lej ntawm 08 thiab 40 rau kev siv rau ntawm cov hlau thiab yas, feem.

2. Kev Taw Qhia thiab Daim Ntawv Thov ntawm Enamelled Wire

Txawm hais tias piav qhia tias yog "enameled", cov hlau nplaum enameled tsis yog, qhov tseeb, coated nrog ib txheej ntawm enamel xim lossis nrog vitreous enamel ua los ntawm fused iav hmoov. Cov hlau nplaum niaj hnub no feem ntau siv ib mus rau plaub txheej (nyob rau hauv cov ntaub ntawv ntawm quad-film hom hlau) ntawm polymer zaj duab xis rwb thaiv tsev, feem ntau ntawm ob qho sib txawv, los muab ib tug tawv, txuas ntxiv insulating txheej. Cov hlau nplaum hlau insulating zaj duab xis siv (nyob rau hauv kev txiav txim ntawm nce kub ntau yam) polyvinyl formal (Formar), polyurethane, polyimide, polyamide, polyster, polyester-polyimide, polyamide-polyimide (lossis amide-imide), thiab polyimide. Polyimide insulated hlau nplaum hlau nplaum muaj peev xwm ua haujlwm ntawm txog li 250 ° C. Lub rwb thaiv tsev ntawm cov hlau nplaum tuab dua square lossis rectangular feem ntau yog augmented los ntawm kev qhwv nws nrog ib tug kub siab polyimide lossis fiberglass daim kab xev, thiab tiav windings feem ntau yog nqus tsev impregnated nrog ib tug insulating varnish los txhim kho lub zog rwb thaiv tsev thiab ntev kev ntseeg siab ntawm lub winding.

Cov kauj uas txhawb nqa tus kheej yog qhwv nrog cov hlau coated nrog tsawg kawg yog ob txheej, sab nraud tshaj plaws yog cov thermoplastic uas khi cov tig ua ke thaum cua sov.

Lwm hom rwb thaiv tsev xws li cov xov fiberglass nrog cov kua roj vanish, ntawv aramid, ntawv kraft, mica, thiab zaj duab xis polyester kuj siv dav thoob plaws ntiaj teb rau ntau yam kev siv xws li transformers thiab reactors. Hauv kev lag luam suab, cov hlau nyiaj tsim, thiab ntau yam insulators, xws li paj rwb (qee zaum permeated nrog qee yam coagulating agent / thickener, xws li beeswax) thiab polytetrafluoroethylene (PTFE) tuaj yeem pom. Cov ntaub ntawv rwb thaiv tsev qub suav nrog paj rwb, ntawv, lossis silk, tab sis cov no tsuas yog siv tau rau cov ntawv thov qis-kub (txog li 105 ° C).

Rau qhov yooj yim ntawm kev tsim khoom, qee cov hlau nplaum qib qis-kub muaj cov rwb thaiv tsev uas tuaj yeem tshem tawm los ntawm cua sov ntawm kev sib txuas. Qhov no txhais tau tias kev sib txuas hluav taws xob ntawm qhov kawg tuaj yeem ua tau yam tsis tas yuav tshem tawm cov rwb thaiv tsev ua ntej.

3. Cov Tshuaj Lom Zem thiab Cov Khoom Tseem Ceeb ntawm Cu-Ni Low Resistance Alloy