Kev faib tawm
Electrothermal alloys: raws li lawv cov ntsiab lus tshuaj thiab cov qauv, lawv tuaj yeem muab faib ua ob pawg:
Ib qho yog hlau-chromium-aluminium alloy series,
Lwm qhov yog cov nickel-chromium alloy series, uas muaj lawv tus kheej zoo li cov khoom siv hluav taws xob cua sov, thiab tau siv dav.
Lub hom phiaj tseem ceeb
Metallurgical machinery, kev kho mob, tshuaj lom neeg kev lag luam, ceramics, electronics, khoom siv hluav taws xob, iav thiab lwm yam khoom siv cua sov thiab pej xeem cov khoom siv cua sov.
Qhov zoo thiab qhov tsis zoo
1. Lub ntsiab zoo thiab qhov tsis zoo ntawm cov hlau-chromium-aluminium alloy series: Qhov zoo: cov hlau-chromium-aluminium hluav taws xob cua sov alloy muaj qhov kev pabcuam kub, qhov kev pabcuam siab tshaj plaws tuaj yeem ncav cuag 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, thiab lwm yam. ), lub neej ntev kev pab cuam, siab load, thiab zoo oxidation kuj, siab resistivity, pheej yig thiab hais txog.Disadvantages: Feem ntau tsis tshua muaj zog ntawm qhov kub thiab txias.Raws li qhov kub thiab txias, nws cov plasticity nce, thiab cov khoom siv tau yooj yim deformed, thiab nws tsis yooj yim rau khoov thiab kho.
2. Lub ntsiab zoo thiab qhov tsis zoo ntawm nickel-chromium hluav taws xob cua sov alloy series: Qhov zoo: qhov kub thiab txias lub zog yog siab dua li ntawm cov hlau-chromium-aluminium, tsis yooj yim rau deform nyob rau hauv kub siv, nws cov qauv tsis yooj yim hloov, zoo. plasticity, yooj yim kho, siab emissivity, tsis-sib nqus, corrosion kuj muaj zog, ntev kev pab cuam lub neej, thiab lwm yam Disadvantages: Vim hais tias nws yog ua los ntawm tsawg nickel hlau cov ntaub ntawv, tus nqi ntawm no series ntawm cov khoom yog mus txog ob peb zaug siab tshaj qhov ntawd. ntawm Fe-Cr-Al, thiab kev siv kub yog qis dua li ntawm Fe-Cr-Al.
zoo thiab phem
Ua ntej tshaj plaws, peb yuav tsum paub tias cov cua sov xaim mus txog lub xeev kub liab, uas muaj qee yam ua rau lub koom haum ntawm cov cua sov hlau.Cia peb xub tshem lub tshuab ziab plaub hau thiab txiav ib feem ntawm cov cua sov hlau.Nrog rau 8V 1A transformer, qhov tsis kam ntawm cov cua sov xaim lossis cov cua sov ntawm daim pam hluav taws xob yuav tsum tsis pub tsawg dua 8 ohms, txwv tsis pub lub transformer yuav hlawv yooj yim.Nrog 12V 0.5A transformer, qhov tsis kam ntawm cov cua sov hlau yuav tsum tsis pub tsawg tshaj 24 ohms, txwv tsis pub lub transformer yuav hlawv tawm yooj yim.Yog hais tias cov cua sov xaim mus txog lub xeev kub-kub, qhov redder qhov zoo dua, koj yuav tsum siv 8V 1A transformer, thiab nws lub zog ntau dua li ntawm 12V 0.5A transformer.Ua li no, peb tuaj yeem kuaj xyuas qhov zoo thiab qhov tsis zoo ntawm cov cua sov hlau.
1. Qhov siab tshaj plaws ua haujlwm kub ntawm cov khoom siv yog hais txog qhov kub thiab txias ntawm cov khoom siv nws tus kheej hauv cov cua qhuav, tsis yog qhov kub ntawm lub cub tawg lossis cov khoom cua sov.Feem ntau, qhov kub ntawm qhov chaw yog li 100 degrees siab tshaj qhov kub ntawm qhov cub.Yog li ntawd, xav txog cov laj thawj saum toj no, hauv kev tsim qauv Ua tib zoo saib xyuas qhov ntsuas kub ntawm cov khoom siv.Thaum qhov kev khiav hauj lwm kub siab tshaj li ib qho kev txwv, oxidation ntawm cov khoom lawv tus kheej yuav nrawm dua thiab qhov kub tsis kam yuav raug txo.Tshwj xeeb tshaj yog cov hlau-chromium-aluminium hluav taws xob cua sov alloy Cheebtsam yog ib qho yooj yim rau deform, tawg, los yog txawm tawg, uas shortens lub neej kev pab cuam..
2. Qhov siab tshaj plaws kev khiav hauj lwm kub ntawm cov tivthaiv muaj kev sib raug zoo nrog cov hlau txoj kab uas hla ntawm cov tivthaiv.Feem ntau, qhov siab tshaj plaws kev khiav hauj lwm kub ntawm cov khoom yuav tsum muaj ib tug hlau txoj kab uas hla tsis tsawg tshaj li 3 hli, thiab lub thickness ntawm lub tiaj tus sawb yuav tsum tsis txhob yuav tsawg tshaj li 2 hli.
3. Muaj kev sib raug zoo ntawm cov cua corrosive nyob rau hauv lub cub tawg thiab lub siab tshaj plaws kev khiav hauj lwm kub ntawm lub Cheebtsam, thiab lub hav zoov ntawm corrosive cua feem ntau cuam tshuam rau lub khiav hauj lwm kub thiab kev pab cuam lub neej ntawm lub Cheebtsam.
4. Vim yog lub zog kub-kub ntawm cov hlau-chromium-aluminium, cov khoom siv tau yooj yim deformed ntawm qhov kub thiab txias.Yog tias txoj kab uas hla tsis raug xaiv kom raug lossis qhov kev teeb tsa tsis raug, cov khoom yuav ploj mus thiab luv luv vim yog qhov kub thiab txias deformation.Yog li ntawd, nws yuav tsum tau coj mus rau hauv tus account thaum tsim cov khoom.nws yam.
5. Vim muaj cov tshuaj sib txawv ntawm cov hlau-chromium-aluminium, npib tsib xee, chromium thiab lwm yam hluav taws xob cua sov alloys, kev siv kub thiab oxidation tsis kam yog txiav txim siab los ntawm qhov sib txawv ntawm cov resistivity, uas yog txiav txim siab nyob rau hauv cov hlau-chromium tshav kub alloy khoom. Al keeb ntawm resistivity, Ni-Cr hluav taws xob cua sov alloy cov ntaub ntawv txiav txim siab resistivity ntawm lub caij Ni.Nyob rau hauv qhov kub thiab txias, cov oxide zaj duab xis tsim nyob rau saum npoo ntawm cov hlau alloy txiav txim siab lub neej kev pab cuam.Vim yog siv lub sijhawm ntev, cov qauv sab hauv ntawm cov khoom hloov pauv tas li, thiab cov oxide zaj duab xis tsim rau ntawm qhov chaw kuj tseem laus thiab puas.Cov khoom nyob rau hauv nws cov Cheebtsam yog tas li tau noj.Xws li Ni, Al, thiab lwm yam, yog li shortening lub neej kev pab cuam.Yog li ntawd, thaum xaiv txoj kab uas hla ntawm cov hluav taws xob rau hluav taws xob hlau, koj yuav tsum xaiv ib tug qauv hlau los yog ib tug tuab tuab siv.