Thaum nrhiav ib qho kev hloov rauhlau nichrome, nws yog ib qho tseem ceeb uas yuav tsum xav txog cov khoom tseem ceeb uas ua rau nichrome tsis tseem ceeb: kev tiv taus kub siab, kev tiv taus hluav taws xob tas li, kev tiv taus corrosion, thiab kev ruaj khov. Txawm hais tias muaj ntau yam khoom siv los ze, tsis muaj ib qho sib npaug ntawm nichrome qhov kev ua tau zoo tshwj xeeb - ua rau peb cov khoom siv nichrome yog qhov kev xaiv txhim khu kev qha rau cov ntawv thov tseem ceeb.
Ib qho kev xaiv uas siv ntau yog kanthal hlau, ib qhohlau-chromium-aluminium alloy. Kanthal ua tau zoo heev nyob rau hauv qhov chaw kub siab, tiv taus qhov kub txog li 1,400 ° C, uas siab dua li qee qib nichrome. Txawm li cas los xij, nws yog brittle dua thiab tsis yooj yim dua, ua rau nws nyuaj rau tsim rau hauv cov qauv tsim nyuaj. Hauv cov ntawv thov uas xav tau kev ywj pheej, xws li cov khoom cua sov me me hauv cov khoom siv hluav taws xob, kanthal feem ntau tsis ua haujlwm, thaum nichrome's ductility tso cai rau kev tsim kom raug yam tsis muaj kev tawg.
Tooj liab-nickel (Cu-Ni) hlau yog lwm qhov kev sib tw, muaj nqis rau nws txoj kev tiv thaiv corrosion thiab nruab nrab resistivity. Tab sis Cu-Ni tawm tsam ntawm qhov kub siab, oxidizing sai sai saum 300 ° C, uas txwv nws siv rau hauv cov xwm txheej kub siab xws li cov cub tawg lossis cov cua sov coils. Nichrome, los ntawm qhov sib piv, tswj kev ruaj khov txawm tias ntawm 1,200 ° C, ua rau nws ntau yam rau cov haujlwm kub siab.
Cov hlau tungsten muaj kev tiv taus cua sov zoo heev, tiv taus qhov kub thiab txias heev txog li 3,422 ° C. Txawm li cas los xij, nws yog qhov tawg yooj yim heev thiab muaj qhov tsis tshua muaj hluav taws xob resistivity, xav tau cov hluav taws xob siab dua los tsim cua sov. Qhov no ua rau nws tsis yooj yim rau feem ntau cov ntawv thov cua sov qhov twg kev siv hluav taws xob zoo thiab yooj yim siv tseem ceeb - thaj chaw uas nichrome, nrog nws qhov resistivity zoo tagnrho thiab kev ua haujlwm tau zoo, ci ntsa iab.
Cov hlau stainless feem ntau raug txiav txim siab rau nws tus nqi pheej yig thiab tiv taus corrosion. Txawm li cas los xij, nws muaj qhov tsis kam qis dua li nichrome, txhais tau tias nws tsim cua sov tsawg dua ib chav ntev, xav tau cov ntsuas tuab dua lossis cov hluav taws xob siab dua kom phim cov zis ntawm nichrome. Raws li lub sijhawm dhau mus, cov hlau stainless kuj feem ntau yuav deform nyob rau hauv tshav kub ntev, txo nws lub neej piv rau nichrome qhov ruaj khov mus sij hawm ntev.
Peb cov khoom siv hlau nichrome daws cov kev txwv no ntawm cov khoom hloov pauv. Muaj ntau qib (xws liNiCr 80/20), lawv muab cov resistivity tseeb rau cov cua sov tso tawm tas li, zoo heev ductility rau kev yooj yim fabrication, thiab zoo dua oxidation tsis kam ntawm qhov kub siab. Txawm hais tias rau cov khoom cua sov hauv cov khoom siv, cov khoom siv hauv chav kuaj, lossis cov cub tawg kev lag luam, peb cov hlau nichrome muab kev ua tau zoo txhim khu kev qha, kev siv hluav taws xob zoo, thiab kev ruaj khov uas lwm txoj hauv kev tawm tsam kom rov ua dua.
Kev xaiv cov xov hlau zoo txhais tau tias yuav tsum muab qhov tseem ceeb rau qhov sib xyaw ua ke ntawm cov khoom uas tsuas yog nichrome muab. Peb cov khoom tau tsim los ua kom tau raws li cov qauv zoo nruj, xyuas kom meej tias lawv ua tau zoo dua li lwm cov khoom siv hauv kev ua haujlwm thiab lub neej ntev - ua rau lawv yog qhov kev xaiv ntse rau koj cov kev xav tau cua sov.
Lub sijhawm tshaj tawm: Cuaj hlis-16-2025
