Oxidation Resistance thiab Ntev -Lub Sijhawm Ntog Stability ntawm Indirect Lead Heating Tubes nyob rau hauv tas li cua qhuav cua sov tej yam kev mob
Nruam cua qhuav cua sov yog ib qho ntawm cov kev siv ntau tshaj plaws hauv kev tsim khoom, npog cov qhov cub, cua convection drying systems thiab qhov cua - hom khoom cua sov. Ntau tus tswv ntawm lub Hoobkas tau ntsib ib qho teeb meem uas cov raj cua kub raug kev txom nyem los ntawm xeb, oxide tev thiab maj mam poob zog tom qab ntev - lub sij hawm qhuav - hlawv, txawm tias cov khoom siv stainless hlau. Feem ntau qhov teeb meem tsis ua hauj lwm tsis yog tshwm sim los ntawm cov khoom siv tsis zoo tab sis tsis tsim nyog lub davhlau ya nyob twg txhuas qauv tsim. Cov hluav taws xob hluav taws xob hluav taws xob ncaj qha tau nthuav tawm cov kab hluav taws xob sib txuas uas ua kom lub zog hauv cheeb tsam siab -kub oxidation, thaum cov hlau lead cua kub tsis ncaj tau txais kev tiv thaiv tag nrho cov hlau hloov pas nrig cov qauv kom qeeb tag nrho oxidation aging ho. Qhov chaw ruaj khov ntawm cov qauv kev ncaj ncees muab cov khoom siv hluav taws xob zoo sib xws thiab txhawb nqa ntev -lub sij hawm ntsuas qhov ntsuas kub ntawm qhov sib txuam thermocouple systems.
High-kub qhuav huab cua muaj zog oxidative kev ua, uas tsis tu ncua erodes saum npoo thiab davhlau ya nyob twg qauv ntawm cua sov ntsiab nyob rau hauv lub round- lub - moos ua hauj lwm. Cov hluav taws xob hluav taws xob hluav taws xob ncaj qha muaj qhov sib txuas tsis sib xws ntawm cov xov hlau sab nraud thiab cov khoom siv hluav taws xob. Cov txheej txheem sib txawv nrog rau cov hlau hlau cores, iav fiber ntau rwb thaiv tsev thiab sealing kua nplaum daim ntawv heterogeneous structural interfaces. Nyob rau hauv ntev -lub sij hawm siab- kub qhuav- hlawv oxidation, cov ntaub ntawv sib txawv tsim cov tshuaj asynchronous oxidation, tsim cov xoob sib xyaw oxide txheej ntawm lub qhov ncauj raj. Cov oxides xoob no tsis tuaj yeem tsim cov yeeb yaj kiab tiv thaiv, thiab yuav maj mam tev tawm nrog thermal cycling, nthuav tawm cov qauv sab hauv kom tsis tu ncua huab cua yaig.
Terminal oxidation tev tawm ua rau cov saw hlau tsis ua haujlwm cuam tshuam rau kev ua haujlwm cua sov tag nrho. Peeled oxide residues poob rau hauv cov khoom siv kab noj hniav, tsim cov khib nyiab me me uas ua rau muaj kev pheej hmoo ntawm kev xau. Kev puas tsuaj hauv zos los ntawm oxidation ua rau tsis muaj qhov sib npaug ntawm cov cua sov, tsim kom ruaj khov siab - qhov kub thiab txias ntawm lub raj nplaim. Qhov nruam tsub zuj zuj ntawm kub qhov chaw kub ntxiv accelerates oxidation ceev, ua ib tug vicious voj voog ntawm cov qauv kev laus. Tsis tas li ntawd, qhov tsis sib xws ntawm qhov chaw oxidation hloov cov hluav taws xob hluav taws xob ua kom zoo ntawm cov cua sov raj, ua rau cov khoom siv hluav taws xob tsis ruaj khov thiab cuam tshuam cov thermal field faib rau hauv qhuav- cov khoom siv hluav taws xob.
Indirect lead cua sov raj daws kom qhuav- hlawv oxidation aging teeb meem los ntawm kev sib xyaw hlau hloov pas nrig tiv thaiv qauv. Tag nrho lub qhov hluav taws xob davhlau ya nyob twg txais yuav ib homogeneous hlau qauv yam tsis muaj heterogeneous khoom sib txuas sib txawv. The uniform metal alloy forms dense and stable oxidation protective films under long-term high-temperature dry heating. Lub compact oxide txheej ze ze rau ntawm tus pas nrig nto, cais tawm sab nraud cov cua qhuav thiab tiv thaiv tsis tu ncua hauv oxidation thiab cov txheej txheem tev tawm. Sib txawv ntawm cov khoom sib xyaw- cov qauv hluav taws xob ncaj qha hluav taws xob, cov pas hlau hloov pauv ua kom tiav qhov kev ncaj ncees tom qab ntau txhiab teev qhuav- hlawv ua haujlwm.
Tsim nyog cov txheej txheem muab faib kom tsis txhob muaj oxidation ntawm cov ntsiab lus tsis muaj zog. Lub siab - kub resistant hlau hloov pas nrig bears tag nrho cov davhlau ya nyob twg siab - kub hluav taws xob thiab oxidative erosion, kiag li cais tsis yooj yim rau lwm cov xov hlau thiab composite sealing khaubncaws sab nraud povtseg los ntawm qhuav- hlawv oxidation ib puag ncig. Lub cev cua sov tag nrho lub cev paub txog qhov sib npaug ntawm oxidation kev laus nrawm, tsis muaj kev ua haujlwm ntxov ntxov hauv zos los ntawm cov qauv tsis muaj zog. Internal magnesium oxide rwb thaiv tsev muab tub lim tseem qhuav thiab compact nyob rau hauv ntev - lub sij hawm qhuav huab cua puag ncig, tuav ruaj khov rwb thaiv tsev thiab kub conduction kev ua tau zoo.
Cov qauv saum npoo ruaj khov thiab zoo ib yam hluav taws xob hluav taws xob ua haujlwm zoo heev ua kom zoo dua qhov ntsuas kub ntawm thermocouple. Oxidation-induced thermal efficiency attenuation nyob rau hauv lub qhov hluav taws xob qhov hluav taws xob cua sov raj ua rau tsis tu ncua kub tawm tswv yim drift, yuav tsum tau nquag phau ntawv parameter calibration. Indirect lead heating tubes tuav ruaj khov hluav taws xob hloov hluav taws xob ua haujlwm tau zoo thoob plaws hauv lub voj voog kev pabcuam, ua kom cov thermocouple sojntsuam txhawm rau txhawm rau ntes cov kab thiab qhov hloov pauv kub. Qhov kaw -lub voj voog tswj qhov kub thiab txias tswj qhov kev hloov kho kom ruaj khov yam tsis muaj kev rov kho dua, kom ntseeg tau tias qhov ziab zoo ib yam - kub txheej txheem kub rau batch ntau lawm.
Rau ntev -khiav cua qhuav- cov cuab yeej siv hluav taws xob, cov khoom siv hluav taws xob tsis tu ncua kom qhuav rauv thiab lub tshuab cua sov cua sov, cov cua kub tsis ncaj ua rau cov cua sov ua kom zoo tiv thaiv oxidation aging thiab deg defects ntawm cov khoom cua sov. Ua ke nrog siab -ruaj khov thermocouple ntsuas kub ntsuas tshuab, lawv tsim kom ntev- lub neej thiab qis- tu cov cua sov kom qhuav rau cov xwm txheej ziab qhuav.
