Kev faib tawm
Cov hlau nplaum hluav taws xob: raws li lawv cov ntsiab lus tshuaj lom neeg thiab cov qauv, lawv tuaj yeem muab faib ua ob pawg:
Ib qho yog cov hlau-chromium-aluminium alloy series,
Qhov thib ob yog cov koob hlau nickel-chromium, uas muaj lawv tus kheej qhov zoo li cov ntaub ntawv cua sov hluav taws xob, thiab siv dav.
Lub hom phiaj tseem ceeb
Cov tshuab siv hlau, kev kho mob, kev lag luam tshuaj lom neeg, ceramics, electronics, khoom siv hluav taws xob, iav thiab lwm yam khoom siv cua sov thiab cov khoom siv cua sov pej xeem.
Cov txiaj ntsig thiab cov tsis zoo
1. Cov txiaj ntsig tseem ceeb thiab qhov tsis zoo ntawm cov hlau-chromium-aluminium alloy series: Cov txiaj ntsig: cov hlau-chromium-aluminium hluav taws xob cua sov alloy muaj qhov kub siab, qhov kub siab tshaj plaws tuaj yeem ncav cuag 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, thiab lwm yam), lub neej ua haujlwm ntev, qhov siab ntawm qhov chaw, thiab kev tiv thaiv oxidation zoo, kev tiv taus siab, pheej yig thiab lwm yam. Qhov tsis zoo: Feem ntau lub zog qis ntawm qhov kub siab. Thaum qhov kub nce, nws cov yas nce, thiab cov khoom yooj yim deformed, thiab nws tsis yooj yim rau khoov thiab kho.
2. Cov txiaj ntsig tseem ceeb thiab qhov tsis zoo ntawm cov hlau nickel-chromium hluav taws xob cua sov alloy series: Cov txiaj ntsig: lub zog kub siab dua li hlau-chromium-aluminium, tsis yooj yim rau deform nyob rau hauv kev siv kub siab, nws cov qauv tsis yooj yim hloov pauv, zoo plasticity, yooj yim kho, siab emissivity, tsis yog magnetic, corrosion tsis kam Muaj zog, lub neej ntev, thiab lwm yam. Cov txiaj ntsig: Vim tias nws yog ua los ntawm cov khoom siv hlau nickel tsawg, tus nqi ntawm cov khoom no yog siab dua li Fe-Cr-Al ntau zaus, thiab qhov kub siv qis dua Fe-Cr-Al.
zoo thiab phem
Ua ntej tshaj plaws, peb yuav tsum paub tias cov hlau cua sov mus txog qhov kub liab, uas muaj feem cuam tshuam nrog kev teeb tsa ntawm cov hlau cua sov. Cia peb tshem lub tshuab ziab plaub hau thiab txiav ib feem ntawm cov hlau cua sov. Nrog lub transformer 8V 1A, qhov tsis kam ntawm cov hlau cua sov lossis cov hlau cua sov ntawm daim pam hluav taws xob yuav tsum tsis pub tsawg dua 8 ohms, txwv tsis pub lub transformer yuav hlawv tawm yooj yim. Nrog lub transformer 12V 0.5A, qhov tsis kam ntawm cov hlau cua sov yuav tsum tsis pub tsawg dua 24 ohms, txwv tsis pub lub transformer yuav hlawv tawm yooj yim. Yog tias cov hlau cua sov mus txog qhov kub liab, qhov liab dua zoo dua, koj yuav tsum siv lub transformer 8V 1A, thiab nws lub zog loj dua li ntawm 12V 0.5A. Ua li no, peb tuaj yeem sim zoo dua qhov zoo thiab qhov tsis zoo ntawm cov hlau cua sov.
1. Qhov kub siab tshaj plaws ntawm cov khoom siv yog hais txog qhov kub ntawm qhov chaw ntawm cov khoom siv hauv huab cua qhuav, tsis yog qhov kub ntawm lub cub tawg lossis cov khoom kub. Feem ntau, qhov kub ntawm qhov chaw yog li 100 degrees siab dua qhov kub ntawm lub cub tawg. Yog li ntawd, xav txog cov laj thawj saum toj no, hauv kev tsim qauv Them sai rau qhov kub ua haujlwm ntawm cov khoom siv. Thaum qhov kub ua haujlwm tshaj qhov txwv, qhov oxidation ntawm cov khoom siv nws tus kheej yuav raug nrawm dua thiab qhov tiv taus cua sov yuav raug txo qis. Tshwj xeeb tshaj yog cov hlau-chromium-aluminium hluav taws xob cua sov alloy Cheebtsam yog yooj yim deformed, collapse, lossis txawm tawg, uas ua rau lub neej ua haujlwm luv dua. .
2. Qhov kub siab tshaj plaws ntawm lub Cheebtsam muaj feem cuam tshuam nrog lub cheeb ntawm cov hlau. Feem ntau, qhov kub siab tshaj plaws ntawm lub Cheebtsam yuav tsum muaj lub cheeb ntawm cov hlau tsis tsawg dua 3 hli, thiab qhov tuab ntawm daim kab tiaj tiaj yuav tsum tsis tsawg dua 2 hli.
3. Muaj kev sib raug zoo ntawm cov huab cua corrosive hauv lub cub tawg thiab qhov kub siab tshaj plaws ntawm cov khoom, thiab qhov muaj cov huab cua corrosive feem ntau cuam tshuam rau qhov kub thiab txias thiab lub neej ua haujlwm ntawm cov khoom.
4. Vim yog lub zog qis ntawm hlau-chromium-aluminium uas kub heev, cov khoom yooj yim deformed ntawm qhov kub siab. Yog tias lub cheeb ntawm cov hlau tsis raug xaiv kom raug lossis kev teeb tsa tsis raug, cov khoom yuav vau thiab luv luv vim yog qhov kub siab deformation. Yog li ntawd, nws yuav tsum tau coj mus rau hauv tus account thaum tsim cov khoom. nws qhov tseem ceeb.
5. Vim muaj cov tshuaj sib txawv ntawm cov hlau-chromium-aluminium, nickel, chromium thiab lwm yam khoom siv hluav taws xob cua sov, qhov kub thiab txias siv thiab kev tiv thaiv oxidation yog txiav txim siab los ntawm qhov sib txawv ntawm resistivity, uas yog txiav txim siab hauv cov hlau-chromium cua sov alloy khoom Al element ntawm resistivity, Ni-Cr hluav taws xob cua sov alloy khoom txiav txim siab qhov resistivity ntawm Ni element. Nyob rau hauv qhov kub siab, cov zaj duab xis oxide tsim rau ntawm qhov chaw ntawm cov khoom siv hlau txiav txim siab lub neej ua haujlwm. Vim yog kev siv sijhawm ntev, cov qauv sab hauv ntawm cov khoom hloov pauv tas li, thiab cov zaj duab xis oxide tsim rau ntawm qhov chaw kuj laus thiab puas tsuaj. Cov ntsiab lus hauv nws cov khoom siv tas li raug noj. Xws li Ni, Al, thiab lwm yam, yog li ua rau lub neej ua haujlwm luv dua. Yog li ntawd, thaum xaiv lub xov hlau txoj kab uas hla ntawm cov hlau hluav taws xob cua sov, koj yuav tsum xaiv cov xov hlau txheem lossis cov siv tuab dua.