Khoom Description
Nichrome hlau yog ib qho hlau uas lwm cov ntsiab lus ntxiv rau nickel los txhim kho nws cov khoom. Ib qho kev sib xyaw ua ke yog 80/20 nickel-chromium tsis kam xaim, nws cov tshuaj muaj pes tsawg leeg muab nws zoo oxidation tsis kam thiab kub ua haujlwm. Cov hlau tsis muaj zog no tau siv dav hauv cov cua kub thiab cov kab hluav taws xob, nrog rau cov khoom siv hauv tsev thiab kev lag luam nrog rau hauv kev lag luam aerospace. Tsis tas li ntawd, cov nickel-chromium alloys kuj muaj xws li kub kub alloys, corrosion-resistant alloys, hnav-resistant alloys, precision alloys, zoo nco alloys, thiab lwm yam.
Khoom Description
|
Yam khoom |
Qib |
NiCr8020 |
Ncr7030 |
NiCr6015 |
Ncr3520 |
NiCr3020 |
NiCr2025 |
|
Tshuaj tiv thaiv |
Ni |
Tseem tshuav |
Tseem tshuav |
55~61 |
34~37 |
30~34 |
19~22 |
|
Cr |
20~23 |
28~31 |
15~18 |
18~21 |
18~21 |
24~26 |
|
|
Fe |
Tsawg dua los yog sib npaug li 1 |
Tsawg dua los yog sib npaug li 1 |
Tseem tshuav |
Tseem tshuav |
Tseem tshuav |
Tseem tshuav |
|
|
Qhov siab tshaj plaws |
1200 |
1250 |
1150 |
1100 |
1100 |
1050 |
|
|
Melting point |
1400 |
1380 |
1390 |
1390 |
1390 |
1380 |
|
|
Qhov ceev g / cm³ |
8.4 |
8.1 |
8.2 |
7.9 |
7.9 |
7.8 |
|
|
Resistant μΩ·m (20 degree) |
1.09±0.05 |
1.18±0.05 |
1.12±0.05 |
1.04±0.05 |
1.04±0.05 |
0.95±0.05 |
|
|
Accelerated lub neej h / degree |
Ntau dua lossis sib npaug li 80/1200 |
Ntau dua lossis sib npaug li 50/1250 |
Ntau dua lossis sib npaug li 80/1150 |
Ntau dua lossis sib npaug li 80/1150 |
Ntau dua lossis sib npaug li 80/1100 |
Ntau dua lossis sib npaug rau 80/1050 |
|
|
Tshwj xeeb kub muaj peev xwm |
0.46 |
0.46 |
0.46 |
0.5 |
0.5 |
0.5 |
|
|
Thermal conductivity |
15 |
14 |
13 |
13 |
13 |
13 |
|
|
Tensile zog |
Ntau dua lossis sib npaug li 650 |
Ntau dua lossis sib npaug li 650 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 600 |
|
|
Elongation A/% |
Ntau tshaj los yog sib npaug rau 20 |
Ntau tshaj los yog sib npaug rau 20 |
Ntau tshaj los yog sib npaug rau 20 |
Ntau tshaj los yog sib npaug rau 20 |
Ntau tshaj los yog sib npaug rau 20 |
Ntau tshaj los yog sib npaug rau 20 |
|
Khoom yam ntxwv
Nickel-chromium alloy tsis tsuas yog tiv taus oxidation thiab corrosion, tab sis kuj kub-resistant. Nichrome alloys tuaj yeem tiv taus qhov kub siab tshaj 2000 degrees Fahrenheit, nyob ntawm seb qhov sib piv ntawm cov hlau tseem ceeb hauv cov hlau. Qhov kev tiv thaiv kub no ua ke nrog lwm cov cuab yeej tseem ceeb ua rau nichrome tshwj xeeb hauv kev lag luam: hluav taws xob tsis kam.
Vim hais tias nichrome muaj hluav taws xob ua haujlwm siab, cua sov tuaj yeem tsim tau sai los ntawm kev muab hluav taws xob tam sim no. Kev kub siab ua haujlwm txhais tau hais tias nichrome tuaj yeem ua kom sov nws tus kheej mus rau qhov kub tsis txaus ntseeg los ntawm hluav taws xob induction.
Yam khoom
hom
Nichrome 80:
Nichrome 80 yog tsim los ntawm kwv yees li 80% npib tsib xee thiab 20% chromium thiab paub txog nws qhov kub thiab txias tiv thaiv oxidation thiab corrosion. Nws muaj lub siab melting point ntawm kwv yees li 1400 degree (2550 degree F) thiab ib tug resistivity ntawm kwv yees li 1.09 × 10 -6 Ω·m, ua rau nws zoo tagnrho rau kev siv tas mus li ntawm qhov kub txog li 1200 degree (2190 degree F). Qhov no ua rau nws zoo tagnrho rau kev siv hluav taws xob siab thiab cov xwm txheej uas yuav tsum tau ua haujlwm siab.
Daim ntawv thov:
Hauv kev xyaum, Nichrome 80 tau siv dav hauv:
Industrial cua sov ntsiab
Lub qhov cub hluav taws xob
Kiln
Kev tsim hluav taws xob luam yeeb coils
Cov ntawv thov no cia siab rau Nichrome 80 rau nws cov kav ntev thiab ruaj khov. Nws muaj peev xwm tiv taus qhov kub thiab txias ntau zaus yam tsis muaj degradation yog tshwj xeeb tshaj yog muaj nuj nqis nyob rau hauv industrial furnaces thiab cov khoom siv hauv tsev.
Nichrome 60: lub log tsheb hloov & kho
Nichrome 60 muaj txog 60% nickel thiab 16% chromium, sib npaug nrog hlau, thiab muaj cov khoom sib txawv me ntsis. Nws cov resistivity yog hais txog 1.11 × 10 -6 Ω·m, uas yog me ntsis siab dua npib tsib xee-chromium alloy 80. Cov alloy tuaj yeem tiv taus kub txog 1150 degree (2100 degree F). Nws kuj muaj qhov ua haujlwm zoo rau qhov kub thiab txias oxidation thiab tswj cov qauv ruaj khov ntawm qhov kub thiab txias.
Daim ntawv thov
Hom nickel-chromium alloy no feem ntau yog siv rau hauv cov ntawv thov kub qis dua piv rau Nichrome 80, xws li:
Plaub hau tshuab
Cua kub phom
Qee hom kev lag luam tshuab
Nws cov ntsiab lus ntawm cov hlau me ntsis ua rau nws cov khoom siv ntau dua thiab tsis tshua muaj nqi, uas yog qhov zoo rau cov ntawv thov uas tsis kam tiv thaiv huab cua kub tsis tseem ceeb.
Nichrome 90:
Nichrome 90 yog tsim los ntawm kwv yees li 90% npib tsib xee thiab yog ib qho hlau uas paub txog nws qhov kev tiv thaiv siab heev ntawm kwv yees li 1.18 × 10 -6 Ω·m. Nws tuaj yeem ua haujlwm ntawm qhov kub txog li 1250 degree (2280 degree F). Cov hlau no feem ntau xaiv rau cov ntawv thov uas xav tau qhov kub thiab txias thiab qhov siab tshaj plaws yuav tsum tau ua.
daim ntawv thov raug:
Cov ntawv thov rau Nichrome 90 suav nrog:
High kub industrial cub
Kiln
Qee hom kev siv aerospace engineering
Nws cov nqi siab dua vim yog cov ntsiab lus npib tsib xee ntxiv yog tsim nyog los ntawm nws qhov kev ua tau zoo tshaj hauv cov cheeb tsam hnyav no.
Cov khoom siv
daim ntawv thov
Electric rhaub:
Hauv cov khoom siv hluav taws xob xws li hluav taws xob cua sov, qhov tsis kam ntawm nichrome hlau yog siv los ua kom muaj cua sov. Lub peev xwm ntawm cov hlau tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj oxidation lossis kev hloov pauv tseem ceeb hauv kev ua haujlwm yog qhov tseem ceeb ntawm no.
Toaster:
Kev ua haujlwm tsis tu ncua ntawm nichrome xaim ua kom cov cua sov ntawm lub toaster, uas yog qhov tseem ceeb rau kev ua kom zoo ib yam ntawm cov qhob cij.
Industrial furnaces:
Lub siab tiv taus thiab kub tsis kam ntawm cov nickel-chromium alloys yog qhov tseem ceeb rau kev lag luam furnaces, qhov uas tswj qhov kub thiab txias yog qhov tseem ceeb.
Kev xaiv ntawm nichrome hlau rau cov ntawv thov no yog ua raws li qhov yuav tsum tau ua. Xaiv lub ntsuas hluav taws xob, qhov ntev thiab txawm tias winding qauv kom ua tiav qhov kev xav tau los xyuas kom meej tias koj lub cuab yeej ua haujlwm zoo thiab nyab xeeb.
Cov txheej txheem khoom
Nichrome hlau yog tsim los ntawm cov txheej txheem kos duab hlau. Cov txheej txheem muaj ob peb kauj ruam:
Melting:
Nickel thiab chromium hlau yaj ua ke los ua ib qho alloy. Qhov tseeb muaj pes tsawg leeg ntawm cov alloy yuav txawv nyob ntawm seb cov qib ntawm nichrome hlau xav tau.
Casting:
Casting molten alloy rau hauv rods ntev.
Annealing:
Muab cov cam khwb cia rau qhov kub thiab txias kom txias kom nws ductility thiab ua kom yooj yim rau kos rau hauv cov hlau.
Daim duab:
Hla ib tug pas nrig los ntawm ib tug series ntawm zuj zus me me tuag kom txo nws txoj kab uas hla thiab nce nws ntev. Cov txheej txheem no hu ua kev kos duab. Cov hlau yog kos rau qhov xav tau tuab, feem ntau ntawm 0.1 hli thiab 5 hli.
Annealing:
Cov hlau kos yog annealed dua kom tshem tawm cov kev ntxhov siab sab hauv thiab txhim kho nws cov khoom siv kho tshuab.
Txheej:
Cov hlau tuaj yeem raug coated nrog cov txheej txheem insulating tiv thaiv kom tsis txhob muaj luv luv los yog muab hluav taws xob rwb thaiv tsev.
Ntim:
Hlau yog ntim thiab xa mus rau cov neeg siv khoom rau ntau daim ntawv thov.
Qhov txawv ntawm nichrome hlau thiab tungsten hlau
|
Nichrome Hlau |
Tungsten Hlau |
|
|
Txhais |
Nichrome hlau yog cov hlau tsis kam ua los ntawm nickel-chromium alloy. Dav siv nyob rau hauv lub sij hawm xav tau kub. Cov hlau no tuaj yeem tiv taus qhov kub txog li 1200 degree, ua rau nws zoo tagnrho rau cov cua sov thiab cov cua sov. Nws kuj yog siv dav hauv cov khoom cua sov hauv kev lag luam zaub mov vim nws tsis muaj tshuaj lom thiab tsis hnov mob nrog cov zaub mov. |
Tungsten hlau, ntawm qhov tod tes, yog ib qho kev xaiv nrov rau cov ntawv thov uas yuav tsum tau ua haujlwm siab thiab qis thermal expansion. Nws yog qhov ruaj khov heev thiab tuaj yeem tiv taus qhov kub thiab txias (txog 3410 degree), ua rau nws zoo tagnrho rau siv rau hauv qhov cub kub. Nws kuj muaj lub zog tensile siab, ua rau nws zoo tagnrho rau kev siv kev ntxhov siab. |
|
Qhov zoo |
Ib qho ntawm qhov zoo tshaj plaws ntawm nichrome hlau yog nws cov corrosion kuj, vim nws tsis xeb yooj yim. Nws kuj tseem pheej yig, ua rau nws xaiv tus nqi zoo rau kev siv hauv kev lag luam. Txawm li cas los xij, nichrome xaim tsis haum rau cov ntawv thov uas xav tau kev ua haujlwm siab vim tias nws muaj qhov tsis kam tiv taus piv rau tungsten hlau. |
Tungsten hlau kuj tseem ntom ntom, ua rau nws yog qhov kev xaiv zoo rau kev siv qhov chaw tsawg. Txawm li cas los xij, nws tseem kim dua piv rau nichrome hlau thiab tsis haum rau cov ntawv thov tsis tshua muaj zog. |
|
Cov chaw thov |
Nichrome hlau thiab tungsten hlau ob leeg muaj cov khoom tshwj xeeb uas ua rau lawv tsim nyog rau kev siv sib txawv. Nichrome hlau yog feem ntau siv hauv kev lag luam khoom noj khoom haus raws li cov khoom cua sov thiab hauv kev tsim cov cua sov thiab qhov cub. Tungsten hlau feem ntau yog siv rau hauv high-temperature furnaces, aerospace thiab teeb pom kev zoo. Nichrome hlau yog ua los ntawm nickel thiab chromium, thaum tungsten hlau yog ua los ntawm tungsten. Nichrome hlau muaj qhov taw tes qis dua li tungsten hlau. Nichrome hlau yog corrosion resistant ntau tshaj tungsten hlau. Nichrome hlau yog pheej yig dua tungsten hlau. Tungsten hlau yog muaj zog tshaj nickel-chromium hlau. |
|
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1. Cov ntaub ntawv ntim khoom: Siv cov yas ua npuas dej, yas zaj duab xis, cov ntawv pov thawj noo noo, thiab lwm yam khoom siv los tiv thaiv cov khoom los ntawm kev ntub dej los yog sib tsoo me ntsis. Cov ntaub ntawv ntxiv rau kev ntim khoom kuj tuaj yeem yog ntoo pallets lossis cov thawv ntim sab nrauv.
2. Cov khoom ntim sab nraud: Cov khoom tuaj yeem muab tso rau hauv lub thawv ntoo sab nrauv lossis pallet ntawm qhov loj kom tsis txhob sib tsoo lossis sib tsoo thaum thauj.
3. Daim ntawv lo: suav nrog cov ntaub ntawv hais txog cov khoom npe, cov lus qhia tshwj xeeb, tus lej batch, thiab cov chaw tsim khoom ntawm lub ntim kom yooj yim nrhiav thiab txheeb xyuas.
4. Hom kev thauj mus los: Txhawm rau kom tsis txhob muaj cov khoom puas thaum caij tsheb thauj mus los, xaiv hom kev thauj mus los zoo tshaj plaws, xws li huab cua, av, lossis kev thauj mus los hauv hiav txwv, thiab xyuas kom cov khoom tsim nyog tau thauj khoom thiab thauj khoom.
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