Hauv cov txheej txheem kev lag luam kub siab, kev ntsuas kub kom raug thiab txhim khu kev qha yog lub hauv paus ntawm kev tswj hwm cov khoom zoo, kev nyab xeeb ua haujlwm, thiab kev siv hluav taws xob zoo.Cov raj tiv thaiv thermocouple tiv thaiv nitride-bonded silicon carbide (NB SiC)sawv tawm ua ib qho kev daws teeb meem zoo tshaj plaws, siv cov txiaj ntsig zoo ntawm silicon nitride thiab silicon carbide los ua kom zoo tshaj plaws hauv qhov chaw nyuaj tshaj plaws. Tshaj li lawv cov kev ua tau zoo tshwj xeeb, peb cov peev xwm hloov kho kom haum rau lawv kom ntseeg tau tias lawv sib xyaw ua ke nrog ntau yam kev lag luam sib txawv, ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau cov tuam txhab tsim khoom thoob ntiaj teb.
Cov ntawv thov ntawm NB SiC thermocouple tiv thaiv raj siv thoob plaws ntau qhov kev lag luam uas xav tau siab, tsav los ntawm lawv cov khoom zoo tshaj plaws - kev ruaj khov kub siab txog li 1500 ° C, kev tiv thaiv thermal zoo heev, thiab kev tiv thaiv corrosion muaj zog. Hauv kev ua cov hlau tsis yog ferrous, lawv yog qhov tseem ceeb rau kev ntsuas kub hauv cov cub tawg txhuas, zinc, tooj liab, thiab magnesium. Tsis zoo li cov ntaub ntawv ib txwm muaj, NB SiC tsis ua rau cov hlau molten paug, ua kom ntseeg tau tias qhov huv ntawm cov khoom kawg thaum tswj kev ruaj khov mus sij hawm ntev. Rau kev lag luam hlau thiab metallurgical, cov raj no ua haujlwm tau zoo hauv cov cub tawg thiab cov txheej txheem kub dov, tiv taus kev puas tsuaj los ntawm cov hmoov av ceev ceev thiab scoria.
Cov chaw ua lag luam petrochemical thiab tshuaj lom neeg tau txais txiaj ntsig zoo los ntawm lawv cov tshuaj lom neeg tsis muaj zog, uas tiv taus kev yaig los ntawm cov kua qaub muaj zog, alkalis, thiab cov pa phem hauv cov thee gasifiers thiab cov hlab ntsha teb. Lawv kuj ua tau zoo heev hauv cov nroj tsuag pov tseg-rau-hluav taws xob thiab cov hlawv, ua siab ntev rau cov pa roj kub siab uas muaj sulfur thiab chlorides. Tsis tas li ntawd, hauv cov lag luam ceramic, iav, thiab kev kho cua sov, lawv cov coefficient nthuav dav thermal qis (4.7 × 10⁻⁶ / ° C ntawm 1200 ° C) ua rau kev ua haujlwm ruaj khov thaum lub sijhawm cua sov thiab txias sai, ua kom ntseeg tau tias qhov ntsuas kub raug.
Peb cov raj tiv thaiv NB SiC thermocouple muab kev hloov kho kom haum rau cov kev xav tau tshwj xeeb. Hais txog qhov ntev, peb muab cov kab uas hla sab nraud (8mm txog 50mm) thiab cov kab uas hla sab hauv (8mm txog 26mm), nrog rau qhov ntev uas tuaj yeem hloov kho tau txog li 1500mm lossis ntev dua raws li cov duab kos. Kev hloov kho cov qauv suav nrog ib daim molding dig muag rau kev ua kom ruaj khov thiab ntau yam kev xaiv mounting - xws li M12 × 1.5 lossis M20 × 1.5 xov, flanges ruaj khov lossis txav tau, thiab cov qauv tsim grooved - kom haum rau cov khoom siv uas twb muaj lawm.
Cov khoom siv kuj tseem tuaj yeem hloov kho tau, nrog rau cov ntsiab lus SiC txij li 60% txog 80% thiab cov ntsiab lus Si₃N₄ txij li 20% txog 40%, sib npaug kev ua tau zoo thiab tus nqi rau qhov kev xav tau xeb lossis kub tshwj xeeb. Peb kuj muab cov kev kho saum npoo kom txo qhov porosity (mus txog <1% qhov porosity ntawm qhov chaw) thiab txhim kho kev tiv thaiv xeb, nrog rau kev ntim khoom tshwj xeeb rau kev thauj mus los ntev. Txhawb nqa los ntawm kev tswj hwm zoo nruj thiab kev xa khoom sai (48-teev kev xa khoom thaum muaj xwm txheej ceev), peb ua kom muaj kev ua tau zoo tas mus li thiab kev xa khoom raws sijhawm.
Xaiv cov raj tiv thaiv thermocouple nitride-bonded silicon carbide rau kev ntsuas kub txhim khu kev qha hauv qhov chaw ib puag ncig hnyav. Peb qhov kev txawj ntse kho kom haum rau koj cov kev xav tau kev lag luam, txo cov nqi txij nkawm thiab lub sijhawm tsis ua haujlwm. Tiv tauj peb hnub no los tham txog koj cov lus qhia thiab tau txais kev daws teeb meem tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Ib Hlis-19-2026
