Cov xov hlau nickel-chromium (Nichrome) alloy yog siv dav hauv kev ua kom sov, hluav taws xob, thiab kev lag luam vim lawv qhov kev tiv taus kub zoo heev thiab kev ua haujlwm hluav taws xob ruaj khov. Ntawm lawv,Nicr7030thiabNicr8020yog ob lub qauv tseem ceeb tshaj plaws, tab sis muaj qhov sib txawv tseem ceeb hauv kev sib xyaw, kev ua tau zoo, thiab cov xwm txheej ntawm kev siv. Hauv qab no yog kev sib piv kom ntxaws los pab koj txiav txim siab yuav khoom zoo:

Kev Sib Piv Qhov Ntev	Nicr7030	Nicr8020	Lwm Cov Qauv Siv Tau (piv txwv li, Nicr6040)
Cov Tshuaj Lom Zem	70% Nickel + 30% Chromium	80% Nickel + 20% Chromium	60% Nickel + 40% Chromium
Kub Tshaj Plaws Ua Haujlwm Txuas Ntxiv Mus	1250°C (Lub sijhawm luv luv: 1400°C)	1300°C (Qhov kub siab tshaj plaws rau lub sijhawm luv luv: 1450°C)	1150°C (Lub sijhawm luv luv: 1350°C)
Kev Tiv Thaiv Hluav Taws Xob (20 ° C)	1.18 Ω·mm²/m2	1.40 Ω·mm²/m	1.05 Ω·mm²/m2
Ductility (Elongation thaum tawg)	≥25%	≥15%	≥20%
Kev Tiv Thaiv Oxidation	Zoo heev (zaj duab xis Cr₂O₃ tuab)	Zoo (zaj duab xis oxide tuab dua)	Zoo (yooj yim tev tawv thaum kub heev)
Kev vuam tau	Zoo dua (yooj yim rau vuam nrog cov txheej txheem ib txwm muaj)	Nruab Nrab (yuav tsum tau tswj cov parameter kom meej)	Nruab nrab
Kev Siv Nyiaj Zoo	Siab (kev ua tau zoo thiab tus nqi sib npaug)	Nruab Nrab (cov nickel ntau dua ua rau tus nqi nce ntxiv)	Qis (qhov kev siv tau txwv)
Cov Xwm Txheej Ib Txwm Muaj Rau Daim Ntawv Thov	Cov khoom siv hauv tsev, cua sov kev lag luam, cua sov tsheb, cov khoom siv hluav taws xob precision	Cov cub tawg kub kub, cov khoom siv cua sov tshwj xeeb	Cov khoom siv cua sov qis, cov resistors dav dav

Kev Tshawb Fawb Txog Qhov Txawv Txawv

1. Cov Tshuaj Lom Zem & Kev Ua Haujlwm Tseem Ceeb

Qhov sib txawv tseem ceeb yog nyob rau hauv qhov sib piv ntawm nickel-chromium: Nicr7030 muaj 30% chromium (siab dua Nicr8020's 20%), uas ua rau nws cov ductility thiab weldability zoo dua. Nrog rau qhov ntev ntawm qhov tawg ntawm ≥25%, Nicr7030 tuaj yeem kos rau hauv cov xov hlau zoo heev (mus txog 0.01 hli) lossis khoov rau hauv cov duab nyuaj, ua rau nws zoo tagnrho rau cov khoom uas xav tau kev ua tiav meej (piv txwv li, cov xov hlau cua sov lub rooj zaum hauv tsheb, cov khoom siv hluav taws xob me me).

Qhov sib piv, Nicr8020 cov nickel ntau dua (80%) txhim kho nws qhov kev ruaj khov thaum kub siab, ua rau nws ua haujlwm tas li ntawm 1300 ° C—50 ° C siab dua Nicr7030. Txawm li cas los xij, qhov no los ntawm tus nqi ntawm kev txo qis ductility (tsuas yog ≥15%), ua rau nws tsis haum rau kev khoov lossis tsim cov txheej txheem. Lwm cov qauv zoo li Nicr6040 muaj cov nickel qis dua, ua rau muaj kev tiv taus qis dua thiab kev tiv taus kub, txwv lawv siv rau cov xwm txheej qis.

2. Kev Tiv Thaiv & Kev Siv Hluav Taws Xob Zoo

Kev tiv taus ncaj qha cuam tshuam rau kev ua kom sov zoo thiab kev tsim khoom. Nicr8020 muaj kev tiv taus siab dua (1.40 Ω·mm² / m), txhais tau tias nws tsim ntau cua sov ib chav ntev hauv tib lub sijhawm tam sim no, ua rau nws haum rau cov khoom siv cua sov me me (piv txwv li, cov cub tawg sintering kub).

Nicr7030 qhov kev tiv taus nruab nrab (1.18 Ω·mm²/m) sib npaug ntawm kev tsim cua sov thiab kev siv hluav taws xob. Rau feem ntau ntawm kev siv hauv kev lag luam thiab cov neeg siv khoom (piv txwv li, qhov cub, cov ntaub sov), nws muab lub zog cua sov txaus thaum txo cov kev pov tseg hluav taws xob. Tsis tas li ntawd, nws qhov kev tiv taus ruaj khov (± 0.5% kev kam rau siab) ua kom muaj kev ua haujlwm zoo ib yam li kev siv mus sij hawm ntev, zam kev hloov pauv kub.

3. Kev Tiv Thaiv Oxidation & Kev Pabcuam Lub Neej

Ob leeg Nicr7030 thiab Nicr8020 tsim cov yeeb yaj kiab Cr₂O₃ tiv thaiv thaum kub siab, tab sis Nicr7030 cov chromium ntau dua tsim cov yeeb yaj kiab denser thiab ruaj khov dua. Qhov no ua rau nws tiv taus "ntsuab lwj" (intergranular oxidation) hauv cov huab cua noo lossis txo qis, ntev nws lub neej kev pabcuam mus txog 8000+ teev (20% ntev dua li Nicr8020 hauv cov chaw ib puag ncig hnyav).

Nicr6040, nrog cov ntsiab lus chromium qis dua, muaj cov zaj duab xis oxide tsis ruaj khov uas yooj yim tev tawm ntawm qhov kub siab tshaj 1000 ° C, ua rau lub neej ua haujlwm luv dua thiab cov nqi kho kom zoo dua.

4. Tus nqi thiab kev hloov kho daim ntawv thov

Nicr7030 muaj kev siv nyiaj zoo dua: nws cov ntsiab lus nickel qis dua (piv rau Nicr8020) txo cov nqi khoom siv raw li ntawm 15-20%, thaum nws cov kev ua tau zoo ntau yam npog 80% ntawm cov xwm txheej siv nichrome hlau. Nws yog qhov kev xaiv zoo tshaj plaws rau cov khoom tsim tawm ntau xws li cov khoom siv hauv tsev thiab cov tshuab cua sov tsheb, qhov twg kev sib npaug ntawm kev ua tau zoo thiab tus nqi yog qhov tseem ceeb.

Cov nickel ntau dua ntawm Nicr8020 ua rau nws cov nqi kim dua, ua rau nws tsuas yog tsim nyog rau cov ntawv thov kub tshwj xeeb (piv txwv li, kev sim khoom siv aerospace). Lwm cov qauv nickel qis xws li Nicr6040 pheej yig dua tab sis tsis muaj kev ua tau zoo los ua kom tau raws li kev lag luam lossis kev xav tau hluav taws xob.

Phau Ntawv Qhia Xaiv

• XaivNicr7030yog tias koj xav tau: Kev ua tau ntau yam, kev ua tiav yooj yim (khoov / vuam), kev siv nyiaj tsim nyog, thiab kev siv rau hauv cov khoom siv hauv tsev, cua sov tsheb, cua sov kev lag luam, lossis cov khoom siv hluav taws xob precision.
• XaivNicr8020yog tias koj xav tau: Qhov kub ua haujlwm siab dua (1300 ° C +) thiab cov khoom siv cua sov me me (piv txwv li, cov cub tawg tshwj xeeb).
• Xaiv lwm cov qauv (piv txwv li, Nicr6040) tsuas yog rau qhov kub qis, qhov xav tau qis (piv txwv li, cov resistors yooj yim).

Nrog nws cov kev ua tau zoo sib npaug, kev siv nyiaj tsim nyog, thiab kev hloov pauv tau dav, Nicr7030 yog qhov kev xaiv pheej yig tshaj plaws rau cov neeg siv khoom feem ntau. Peb lub tuam txhab muab cov lus qhia tshwj xeeb (txoj kab uas hla, qhov ntev, ntim khoom) thiab kev txhawb nqa kev siv tshuab kom ntseeg tau tias Nicr7030 phim koj cov kev xav tau ntawm daim ntawv thov.