1. Cov Khoom Xyaw Sib Txawv

Nickel chromium alloyCov hlau feem ntau yog ua los ntawm nickel (Ni) thiab chromium (Cr), thiab kuj tseem muaj cov khoom me me. Cov ntsiab lus ntawm nickel hauv nickel-chromium alloy feem ntau yog li 60% -85%, thiab cov ntsiab lus ntawm chromium yog li 10% -25%. Piv txwv li, cov nickel-chromium alloy Cr20Ni80 feem ntau muaj cov ntsiab lus chromium txog li 20% thiab cov ntsiab lus nickel txog li 80%.

Cov khoom tseem ceeb ntawm cov hlau tooj liab yog tooj liab (Cu), uas nws qhov kev ntshiab tuaj yeem ncav cuag ntau dua 99.9%, xws li T1 tooj liab ntshiab, cov ntsiab lus tooj liab siab txog 99.95%.

2. Cov Khoom Siv Lub Cev Sib Txawv

Xim

- Hlau Nichrome feem ntau yog xim grey nyiaj. Qhov no yog vim tias cov xim ci ntawm nickel thiab chromium sib xyaw ua ke los muab cov xim no.

- Cov xim tooj liab yog xim liab dawb, uas yog xim ib txwm muaj ntawm tooj liab thiab muaj lub teeb ci ntsa iab.

Qhov Ceev

- Qhov ceev ntawm cov hlau nickel-chromium yog qhov loj heev, feem ntau nyob ib puag ncig 8.4g / cm³. Piv txwv li, 1 cubic meter ntawm nichrome hlau muaj qhov hnyav li ntawm 8400 kg.

- Lubhlau tooj liabQhov ceev yog li ntawm 8.96g / cm³, thiab tib lub ntim ntawm cov hlau tooj liab yog me ntsis hnyav dua li cov hlau nickel-chromium alloy.

Qhov Kub Yaj

-Nickel-chromium alloy muaj qhov kub siab melting, nyob ib puag ncig 1400 ° C, uas ua rau nws muaj peev xwm ua haujlwm ntawm qhov kub siab dua yam tsis yooj yim yaj.

-Qhov kub ntawm tooj liab yog li 1083.4 ℃, uas qis dua li ntawm nickel-chromium alloy.

Kev Ua Hluav Taws Xob

-Xov hlau tooj liab ua hluav taws xob tau zoo heev, nyob rau hauv tus qauv mob, tooj liab muaj hluav taws xob conductivity ntawm txog 5.96 × 102 S / m. Qhov no yog vim hais tias cov qauv hluav taws xob ntawm cov atoms tooj liab tso cai rau nws kom ua hluav taws xob zoo, thiab nws yog ib qho khoom siv conductive feem ntau, uas yog siv dav hauv cov teb xws li kev xa hluav taws xob.

Cov hlau nickel-chromium alloy muaj cov hluav taws xob tsis zoo, thiab nws cov hluav taws xob conductivity qis dua li ntawm tooj liab, txog li 1.1 × 10⁶S / m. Qhov no yog vim muaj cov qauv atomic thiab kev sib cuam tshuam ntawm nickel thiab chromium hauv cov hlau, yog li ntawd kev coj ntawm cov electrons raug cuam tshuam rau qee qhov.

Kev ua kom sov tau zoo

-Tooj liab muaj cov thermal conductivity zoo heev, nrog rau cov thermal conductivity ntawm li 401W / (m · K), uas ua rau tooj liab siv dav hauv cov chaw uas xav tau cov thermal conductivity zoo, xws li cov khoom siv cua sov dissipation.

Qhov thermal conductivity ntawm nickel-chromium alloy yog qhov tsis muaj zog, thiab qhov thermal conductivity feem ntau yog nruab nrab ntawm 11.3 thiab 17.4W / (m · K)

3. Cov Khoom Siv Tshuaj Sib Txawv

Kev Tiv Thaiv Kev Xeb

Cov hlau nickel-chromium muaj kev tiv thaiv xeb zoo, tshwj xeeb tshaj yog nyob rau hauv qhov kub siab oxidation ib puag ncig. Nickel thiab chromium tsim ib daim zaj duab xis oxide ntom ntom rau ntawm qhov chaw ntawm cov hlau, tiv thaiv kev ua oxidation ntxiv. Piv txwv li, nyob rau hauv huab cua kub siab, cov txheej txheej oxide no tuaj yeem tiv thaiv cov hlau hauv cov hlau los ntawm kev xeb ntxiv.

- Tooj liab yooj yim oxidized hauv huab cua los ua ib qho vercas (basic tooj liab carbonate, mis Cu₂(OH)₂CO₃). Tshwj xeeb tshaj yog nyob rau hauv ib puag ncig noo noo, qhov chaw ntawm tooj liab yuav maj mam corroded, tab sis nws qhov kev tiv thaiv corrosion hauv qee cov kua qaub tsis-oxidizing yog qhov zoo.

Kev Ruaj Ntseg Tshuaj

- Nichrome alloy muaj kev ruaj khov tshuaj lom neeg siab thiab tuaj yeem ruaj khov nyob rau hauv qhov muaj ntau yam tshuaj lom neeg. Nws muaj qee qhov kev kam rau cov kua qaub, cov hauv paus thiab lwm yam tshuaj lom neeg, tab sis nws kuj tuaj yeem ua rau muaj kev cuam tshuam hauv cov kua qaub oxidizing muaj zog.

- Tooj liab nyob rau hauv qee cov tshuaj oxidants muaj zog (xws li nitric acid) nyob rau hauv qhov kev ua ntawm cov tshuaj lom neeg uas muaj zog dua, cov tshuaj tiv thaiv kab mob yog \(3Cu + 8HNO₃(dilute)=3Cu(NO₃ + 2NO↑ + 4H₂O\).

4. Kev Siv Txawv

- hlau nickel-chromium alloy

- Vim nws muaj zog tiv taus siab thiab tiv taus kub siab, nws feem ntau yog siv los ua cov khoom siv hluav taws xob cua sov, xws li cov xov hlau cua sov hauv cov qhov cub hluav taws xob thiab cov cua sov dej hluav taws xob. Hauv cov khoom siv no, cov xov hlau nichrome muaj peev xwm hloov pauv lub zog hluav taws xob mus rau hauv cua sov.

- Nws kuj tseem siv rau qee lub sijhawm uas cov khoom siv kho tshuab yuav tsum tau tswj hwm hauv qhov chaw kub siab, xws li cov khoom txhawb nqa ntawm cov cub tawg kub siab.

- Hlau tooj liab

- Cov xov tooj liab feem ntau yog siv rau kev xa hluav taws xob, vim nws cov hluav taws xob zoo tuaj yeem txo qhov poob ntawm lub zog hluav taws xob thaum lub sijhawm xa hluav taws xob. Hauv lub kaw lus fais fab, ntau cov xov tooj liab tau siv los ua cov xov hlau thiab cov cables.

- Nws kuj tseem siv los ua kev sib txuas rau cov khoom siv hluav taws xob. Hauv cov khoom siv hluav taws xob xws li khoos phis tawj thiab xov tooj ntawm tes, cov xov tooj liab tuaj yeem ua tiav kev xa cov teeb liab thiab muab hluav taws xob ntawm ntau yam khoom siv hluav taws xob.