Ua ntej, nws yog qhov tseem ceeb kom piav qhia lawv txoj kev sib raug zoo:Nichrome(luv rau nickel-chromium alloy) yog ib pawg dav ntawm nickel-chromium-based alloys, thaumNi80yog ib hom nichrome tshwj xeeb nrog cov khoom sib xyaw ruaj khov (80% nickel, 20% chromium). Qhov "txawv" nyob rau hauv "qeb dav dav vs. cov khoom sib txawv tshwj xeeb" - Ni80 yog los ntawm tsev neeg nichrome tab sis muaj cov khoom tshwj xeeb vim nws ruaj khov, ua rau nws haum rau cov xwm txheej kub siab tshwj xeeb. Hauv qab no yog kev sib piv ntxaws ntxaws:
| Aspect | Nichrome (Qeb Dav Dav) | Ni80 (Kev Hloov Tshwj Xeeb Nichrome) |
| Kev Txhais Lus | Ib tsev neeg ntawm cov hlau sib xyaw ua ke feem ntau yog ua los ntawm nickel (50–80%) thiab chromium (10–30%), nrog rau cov khoom ntxiv (piv txwv li, hlau) | Ib qho khoom siv nichrome zoo tshaj plaws nrog cov khoom sib xyaw nruj: 80% nickel + 20% chromium (tsis muaj cov khoom ntxiv) |
| Kev Yooj Yim ntawm Kev Sau Ntawv | Cov piv txwv nickel-chromium sib txawv (piv txwv li, Ni60Cr15, Ni70Cr30) kom tau raws li qhov xav tau sib txawv | Kho 80:20 nickel-chromium piv (tsis muaj kev ywj pheej hauv cov khoom tseem ceeb) |
| Kev Ua Tau Zoo Tseem Ceeb | Kev tiv taus kub nruab nrab (800–1000 ° C), kev tiv taus oxidation yooj yim, thiab kev tiv taus hluav taws xob hloov kho tau | Kev tiv taus kub siab heev (txog li 1200 ° C), kev tiv taus oxidation zoo heev (qhov scaling qis ntawm 1000 ° C +), thiab kev tiv taus hluav taws xob ruaj khov (1.1–1.2 Ω / mm²) |
| Cov Ntawv Thov Ib Txwm Muaj | Cov xwm txheej kub nruab nrab-qis (piv txwv li, cov raj cua sov khoom siv hauv tsev, cov cua sov me me, cov cua sov kev lag luam uas siv hluav taws xob tsawg) | Cov xwm txheej kub thiab xav tau ntau (piv txwv li, cov kauj cua sov hauv kev lag luam, cov tshuab luam ntawv 3D kub, cov khoom siv de-icing hauv aerospace) |
| Cov kev txwv | Qhov kub siab tshaj plaws qis dua; kev ua tau zoo sib txawv ntawm qhov sib piv tshwj xeeb (qee qhov sib txawv oxidize sai sai ntawm qhov kub siab) | Tus nqi khoom siv raw siab dua; tsim nyog dhau rau cov xwm txheej kub qis (tsis tsim nyog tus nqi) |
1. Cov khoom sib xyaw: Ruaj khov piv rau Ruaj khov
Nichrome ua ib pawg tso cai rau kev hloov kho qhov sib piv ntawm nickel-chromium kom sib npaug tus nqi thiab kev ua tau zoo. Piv txwv li, Ni60Cr15 (60% Ni, 15% Cr) ntxiv hlau kom txo tus nqi tab sis txo qhov tiv taus cua sov. Qhov sib piv, Ni80 muaj qhov sib piv nickel-chromium 80:20 uas tsis tuaj yeem sib tham tau - qhov no yog vim li cas nws thiaj ua tau zoo dua lwm cov nichrome variants hauv kev tiv taus oxidation thiab kev kam rau kub. Peb Ni80 ua raws li tus qauv 80:20, nrog rau qhov tseeb ntawm cov khoom sib xyaw hauv ± 0.5% (sim los ntawm atomic absorption spectroscopy).
2. Kev Ua Tau Zoo: Tshwj Xeeb vs. Lub Hom Phiaj Dav Dav
Rau qhov xav tau kub siab (1000–1200°C), Ni80 tsis muaj qhov sib piv. Nws tswj tau qhov ruaj khov ntawm cov qauv hauv cov cub tawg lossis cov tshuab luam ntawv 3D kub kawg, thaum lwm yam nichrome (piv txwv li, Ni70Cr30) yuav pib oxidizing lossis deforming saum 1000°C. Txawm li cas los xij, rau cov haujlwm kub nruab nrab-qis (piv txwv li, lub tshuab ziab plaub hau 600°C), siv Ni80 tsis tsim nyog - cov qauv nichrome pheej yig dua ua haujlwm zoo. Peb cov kab khoom suav nrog ob qho tib si Ni80 (rau cov xwm txheej xav tau siab) thiab lwm yam nichrome (rau cov nqi-rhiab, qhov xav tau kub qis).
3. Daim Ntawv Thov: Lub Hom Phiaj vs. Dav Dav
Cov qeb dav dav ntawm Nichrome pab tau ntau yam kev xav tau kub qis mus rau nruab nrab: Ni60Cr15 rau cov cua sov hauv tsev me me, Ni70Cr30 rau cov filaments toaster lag luam. Los ntawm qhov sib piv, Ni80 tsom mus rau cov ntawv thov kub siab thiab kub siab: nws muab lub zog rau cov cub tawg sintering hauv kev lag luam (qhov twg qhov kub sib xws yog qhov tseem ceeb) thiab cov tshuab de-icing aerospace (qhov twg kev tiv taus rau cov voj voog txias / kub heev yog qhov tseem ceeb). Peb lub Ni80 tau ntawv pov thawj rau ASTM B162 (cov qauv aerospace) thiab ISO 9001, ua kom ntseeg tau tias muaj kev ntseeg siab hauv cov teb no.
Yuav Xaiv Li Cas Ntawm Lawv?
- Xaiv cov nichrome dav dav (piv txwv li, Ni60Cr15, Ni70Cr30) yog tias: Koj xav tau cua sov nruab nrab-qis (<1000°C) thiab muab qhov tseem ceeb rau kev siv nyiaj tsim nyog (piv txwv li, cov khoom siv hauv tsev, cov cua sov me me).
- Xaiv Ni80 yog tias: Koj xav tau kev ruaj khov thaum kub siab (>1000°C), lub neej ua haujlwm ntev (10,000+ teev), lossis ua haujlwm hauv cov lag luam tseem ceeb (aviation, industrial manufacturing).
Peb pab neeg muab kev pabcuamkev sab laj pub dawb—peb yuav pab koj phim qhov sib txawv nichrome (xws li Ni80) rau koj daim ntawv thov tshwj xeeb, kom ntseeg tau tias muaj kev ua tau zoo tshaj plaws thiab kev siv nyiaj tsawg.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-25-2025
