Nichrome Xaim: Qhov Twg Tau Txais Nws Nyob Hauv Tsev? Cov Lus Ntawm Resistivity Ntawm Nichrome Rau 1 Meter, Ntom. Nws Siv Qhov Twg?

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-15 04:12

Nichrome tuaj yeem hu ua cov khoom siv tshwj xeeb, nws tsis zoo ib yam li tooj liab thiab hlau, tab sis nws tsis muaj qhov tseem ceeb tsawg. Hom hlau no tau txais rov qab rau xyoo 1905 los ntawm kev ua haujlwm ntawm Asmeskas kws tshawb fawb Marshal.

Nta thiab cov khoom

Lub hauv paus tseem ceeb ntawm nichrome xaim yog chrome thiab npib tsib xee . Nws kuj tseem muaj cov tshuaj ntxiv xws li silicon, hlau, txhuas, manganese.

Ntau yam kev lag luam siv cov hlau nichrome hauv lawv txoj haujlwm. Nws zoo li cov xov nyiaj, txoj kab uas hla tuaj yeem yog 0.1 txog 7 hli.

Feem ntau hom khoom no muag hauv skeins , reels , yog tias tsim nyog, nws raug ntsuas thiab txiav tawm.

Cov khoom tseem ceeb ntawm nichrome tuaj yeem pom hauv cov lus hauv qab no

Parameters	Qhov ntsuas
Cua sov, yaj kub	850 - 110 degrees Celsius
Lub zog	650-700 hli
Resistivity coefficient ib 'meter'	1100-1140 hli
Ceev	Tsawg dua 8500 kg / m3

Nichrome muaj qhov hnyav tsawg, vim li no, cov khoom siv feem ntau siv rau kev tsim khoom txhua yam khoom siv hluav taws xob. Cov hlau tsis raug kev txom nyem los ntawm kev ua tsis tau zoo hauv cov kua thiab ib puag ncig kev xeb. Ua tsaug rau chromium, zaj duab xis tsim ntawm cov khoom, uas ua rau nws cais tawm ntawm qhov tsis zoo ntawm lwm yam. Cov khoom ntawm cov hlau no tau piav qhia ntxaws hauv GOST 10994-74, GOST 8803-89, GOST 12766.1-90.

Cia peb hais txog cov yam ntxwv vim qhov twg nichrome suav tias yog cov hlau muaj txiaj ntsig

1. Tsis xeb, uas txawv nws los ntawm lwm cov ntaub ntawv zoo sib xws.
2. Muaj kev tiv thaiv tseem ceeb rau qhov tshwj xeeb tam sim no. Vim li no, nichrome xaim yuav tsum tau tsawg dua li cov hlau hlau rau kev tsim khoom ntawm ib qho khoom siv twg. Ib qho ntxiv, qhov tshwj xeeb no txhawb rau qhov tseeb tias cov khoom ua los ntawm nichrome yog qhov me me thiab hnyav me ntsis.
3. Tsis deform, tsis kub hnyiab nyob hauv qhov kub thiab txias.
4. Nws yog tus yam ntxwv los ntawm kev ywj pheej, uas tso cai rau koj yooj yim hloov cov duab ntawm cov hlau.

Qhov tsis zoo nichrome alloy muaj ib qho - qhov no yog tus nqi siab, tab sis nws tsis muaj ib txoj hauv kev txo qhov kev thov rau cov khoom siv hluav taws xob no.

Nws tsis tuaj yeem tsim cov sib txuas thaum siv cov dej ntws .… Txhawm rau ua cov txheej txheem no, koj yuav tsum tau ua raws qee qib ntawm kev siv cov cuab yeej siv tshuaj txhuam. Cov laug hauv qhov no tuaj yeem yog tin-lead alloy.

Nws kuj tseem muaj txiaj ntsig los cais cais cov dej ntws, cov khoom sib xyaw uas yuav tsum tau muab tshuaj rau hauv qhov nruj . Lub hauv paus tseem ceeb ntawm cov khoom yog roj av jelly ntawm kev tsim tawm, glycerin thiab zinc chloride. Txhawm rau kom sib xyaw kom tau txais qhov sib xws zoo, koj yuav tsum tau ua kom sib xyaw txhua yam ntawm cov khoom siv saum toj no. Sandpaper yuav xav tau tshem tawm cov seem ntawm cov av thiab cov txheej txheem oxidized. Tom qab ntawd, thaj chaw yuav tsum tau so nrog paj rwb ntaub plaub, siv cov dej ntws tawm thiab cov laug.

Nws siv qhov twg?

Kev siv cov nichrome xov tau pom nyob hauv ntau thaj tsam ntawm lub neej thiab kev tsim khoom . Piv txwv li, ntau tus neeg paub tias kauv ntawm lub qhov cub hluav taws xob thiab cov cua sov hauv lub rhaub dej kub tau ua los ntawm nws. Tsis tas li, tsis muaj nichrome, nws nyuaj rau xav txog kev hlawv, txiav ntoo thiab cov cuab yeej nws tus kheej - lub tshuab hlawv.

Hauv kev lag luam

Kev lag luam hlau yog ib qho ntawm cov thawj coj hauv lub neej ntawm noob neej. Nws cov khoom lag luam tau siv dav hauv cov lus qhia uas siv hluav taws xob cua sov, lub qhov cub rau ci, kom qhuav, nrog rau cov khoom uas tau ua kom sov rau qhov kub thiab txias, cov cuab yeej siv nrog cov cua sov.

Nichrome xaim yog ib feem tseem ceeb ntawm cov cuab yeej siv rau kev siv vuam, cov cua sov hauv tsev, iav cua sov, nrog rau cov tiv thaiv, chav tiv thaiv, thiab rheostat.

Vim tias qhov ua haujlwm siab ntawm cov hlau phom, nws tau siv hauv cov hauv qab no:

• thermocouple cua sov phaj hauv metallurgy;
• hom tshuab cua tshuab
• qhov chaw ntawm lub rhaub dej, cov cua sov hloov pauv;
• electrodes rau vuam;
• xov hlau.

Hauv tsev neeg

Hauv cov xwm txheej hauv tsev, nichrome tau siv rau styrofoam thiab txiav styrofoam . Raws li koj paub, hauv tsev, txiav cov ntaub ntawv no yog qhov nyuaj, vim tias ua npuas dej tuaj yeem tawg los ntawm kev siv rab riam zoo tib yam. Cov xaim tau siv los ua lub tshuab tshwj xeeb uas ua haujlwm raws li txoj hlua khi ua kom sov. Siv cov cuab yeej no, koj tuaj yeem ua tus kheej ntawm ntau qhov khoob ntawm nthuav polystyrene thiab ua npuas ncauj polystyrene. Nichrome yog lub hauv paus tseem ceeb hauv cov khoom siv hauv tsev feem ntau:

• Cov cua sov rau lub lauj kaub, lub rhaub dej, lub rhaub dej;
• cov khoom ntawm lub tshuab ziab plaub hau, cov tais diav, cov hlau;
• tsheb tswm ciab, nrog rau lawv cov cua sov;
• cigars hauv hluav taws xob.

Hauv tshuaj

Nichrome xov yog qhov tsim nyog hauv kev kho mob, vim tias lawv tsis muaj peev xwm ua rau muaj kev tsis haum tshuaj hauv lub cev. Cov kev tshawb fawb tau pom tias kev txiav uas tau sutured nrog nichrome threads kho sai dua li lwm qhov.

Ib qho ntxiv, cov ntsiab lus no tau pom lawv daim ntawv thov hauv cov yas qhia kev phais thaum lub sijhawm phais phais.

Hauv cov tsev muag tshuaj, cov hlau phom yog ib feem ntawm cov khoom siv cua sov rau cov cua sov.

Npav

Nichrome xaim muaj ntau dua ib lub npe, yog li txhua hom khoom muaj qee yam zoo. Cov pab pawg tseem ceeb ntawm nichrome yog raws li hauv qab no.

1. Resistor.
2. Cov khoom siv tau pom nyob hauv kev tsim kho tsev neeg thiab cov khoom siv cua sov. Cov pab pawg muaj peev xwm tiv taus cua sov siab.
3. Ib pawg nichrome, tsim los ua haujlwm nrog qhov kub siab txog 9 puas degrees.

Cov xaim ntawm pawg tiv thaiv tus yam ntxwv yog txoj kab uas hla 0, 009-0, 4 mm.

Qhov ntsuas no rau pab pawg thib ob ntawm cov hlau tuaj yeem nyob ntawm 0.2 txog 7.5 hli. Mus rau "congeners" ntawm cov hlau xaim suav nrog kanthal thiab fehrali, uas muaj daim ntawv ntawm chrome alloy nrog hlau thiab txhuas.

Cov ntaub ntawv no yog tus yam ntxwv tiv taus hluav taws xob siab, tiv taus kub li 1400 degrees Celsius . Txawm hais tias tag nrho cov txiaj ntsig saum toj no, kanthal thiab fehrali tsis muaj kev ntseeg tau zoo li nichrome, tab sis lawv pheej yig dua.

Cov khoom lag luam Nichrome muaj qhov feem pua sib txawv ntawm cov khoom sib xyaw. Feem ntau yog cov hauv qab no.

X20N73YUM yaj los ntawm txoj kev nqus-induction thiab raws li cov khoom sib xyaw muaj cov hauv qab no sib piv ntawm cov tshuaj: 20% chromium, 73% npib tsib xee, 3% txhuas, 1.5% molybdenum.

KhN70Yu-N muaj 20% chromium, 70% npib tsib xee, 3% txhuas, tsawg dua 0.3% manganese, tsawg dua 1.5% hlau. Cov hlau no feem ntau siv rau kev tsim cov khoom uas yog ib feem tseem ceeb ntawm cov khoom siv cua sov.

KHN20YUS siv hauv cov cua sov uas muaj cua sov ua haujlwm. Cov hlau muaj 20% chromium thiab npib tsib xee, 1% txhuas, thiab 50% hlau.

Thaum yuav nichrome, koj yuav tsum coj mus rau hauv tus as khauj:

• H - qeb ntawm cov cua sov ntsiab lus;
• C - siv hauv cov ntsiab lus ntawm kev tawm tsam;
• Cov cua sov - rau lub rhaub dej nrog cov tubular hom kev tsim kho.

Yuav txiav txim siab li cas?

Sab nrauv, nichrome hlau zoo li ntau lwm yam khoom, yog li nws yog qhov tseem ceeb rau txhua tus neeg siv khoom kom kawm paub yuav ua li cas thiaj paub qhov txawv ntawm lwm qhov. Lub ntsiab sib txawv tseem ceeb ntawm corrosion-resistant nichrome:

• cov hlau tshiab yog dawb, thiab siv hlau ua kom tsaus ntuj;
• cov hlau nplaum ntawm cov hlau tsawg tsawg lossis tsis tuaj kiag li;
• nichrome yog cov khoom siv tawv dua;
• acids tuaj yeem rhuav tshem cov hlau no;
• cov khoom tsis oxidize yog raug rau qhov kub thiab txias.

Txhawm rau xaiv cov hlau nichrome hlau, koj yuav tsum txheeb xyuas nws qhov ua tau zoo.

Rau qhov suav no kev ua haujlwm tshwj xeeb ntawm kev ua haujlwm raws li cov mis R = ρ l / S , qhov ntev, thaj tsam hla ntu raug coj mus rau hauv tus account.

Tau qhov twg?

Ntau tus xav paub yuav ua li cas thiab nyob qhov twg kom tau nichrome hauv tsev. Muaj txoj hauv kev los nrhiav cov hlau.

1. Tso xaj rau nichrome cov khoom hauv tuam txhab uas tsim khoom rau lawv.
2. Yuav los ntawm khw muag khoom kho vajtse lossis khw kho vajtse. Qhov no tuaj yeem yog lub ntsiab lus ntawm kev siv cov khoom siv xov tooj cua, ntau yam khoom siv thiab cov tsim khoom.
3. Yuav los ntawm cov neeg uas koom nrog hauv kev siv cov khoom siv xov tooj cua thiab cov khoom me me ua los ntawm cov hlau.
4. Hauv kuv lub tsev. Muaj nichrome hauv qee yam khoom siv, piv txwv li, hauv qhov muab kauv ntawm lub qhov cub hluav taws xob.

Nrog kev txiav txim loj, nws yog qhov zoo dua los siv thawj qhov kev xaiv, tag nrho lwm qhov yog qhov tsim nyog yog tias cov neeg siv khoom xav tau me ntsis nichrome alloy.

Yuav hloov dab tsi?

Kev tsis ua tiav cov cua sov ntawm ntau yam khoom siv hauv tsev yog tam sim no tsis yooj yim. Feem ntau, cov cuab yeej xav tau hloov pauv txoj haujlwm ua haujlwm, uas suav tias yog ib feem tseem ceeb ntawm lub qhov cub hluav taws xob, hlau, hwj kais. Hauv qhov no, cov hlau tsis xeb yog suav tias yog lwm txoj hauv kev rau cov hlau nichrome.

Cov ntaub ntawv no yuav luag zoo ib yam kuj. Txawm li cas los xij, nws tsim nyog nco ntsoov tias cov hlau tsis muaj zog tiv taus rau cov txheej txheem oxidation. Txhawm rau hloov cov hlau nichrome, koj tuaj yeem siv cov hlua los ntawm cov raj qub, qhov twg muaj cov hlau tsis muaj zog ntxiv. Nichrome yog cov hlau ua tau zoo tshwj xeeb, yog li nws yog qhov xav tau niaj hnub no.