Kev tsim technology ntawm graphite crucibles rau smelting tooj liab tab tom muaj kev hloov pauv. Cov txheej txheem no siv lub ntiaj teb cov txheej txheem txias txias isostatic nias thiab tsim nyob rau hauv lub siab ntawm 600MPa los xyuas kom meej tias cov qauv sab hauv ntawm lub crucible yog ib yam thiab tsis muaj qhov tsis xws luag thiab muaj zog heev. Qhov kev tsim kho tshiab no tsis tsuas yog txhim kho kev ua haujlwm ntawm crucible, tab sis kuj ua rau muaj kev cuam tshuam loj hauv kev txuag hluav taws xob thiab kev tiv thaiv ib puag ncig.
Qhov zoo ntawm txias isostatic nias
Internal qauv yog uniform thiab tsis muaj qhov tsis xws luag
Nyob rau hauv high-pressure molding, cov qauv sab hauv ntawm tooj liab-graphite crucible yog tsis tshua muaj sib xws yam tsis muaj qhov tsis xws luag. Qhov no yog qhov tsis sib xws rau cov txheej txheem txiav ib txwm. Vim yog qhov qis qis, cov txheej txheem ib txwm ua rau muaj kev cuam tshuam ntawm cov txheej txheem sab hauv uas cuam tshuam rau nws lub zog thiab thermal conductivity.
Lub zog siab, nyias phab ntsa crucible
Txoj kev txias isostatic pressing no ho txhim kho lub zog ntawm lub crucible nyob rau hauv siab. Lub zog ntau dua tso cai rau cov phab ntsa crucible ua thinner, yog li ua kom thermal conductivity thiab txo lub zog noj. Piv nrog rau cov tsoos crucibles, hom tshiab ntawm crucible no yog qhov tsim nyog rau kev tsim khoom thiab kev txuag hluav taws xob.
Zoo heev thermal conductivity thiab tsawg zog noj
Lub zog siab thiab nyias-walled qauv ntawm molten tooj liab graphite crucibles ua rau zoo thermal conductivity piv rau cov pa crucibles. Kev txhim kho thermal conductivity txhais tau hais tias cov cua sov tuaj yeem hloov tau ntau qhov sib npaug thiab nrawm thaum lub sij hawm smelting txheej txheem ntawm aluminium alloys, zinc alloys, thiab lwm yam, yog li txo lub zog noj thiab txhim kho kev tsim khoom.
Kev sib piv nrog cov txheej txheem tsim khoom ib txwm muaj
Kev txwv ntawm txoj kev txiav
Feem ntau ntawm domestically tsim graphite crucibles yog tsim los ntawm kev txiav thiab ces sintering. Txoj kev no ua rau tsis sib xws, tsis zoo, thiab tsis muaj zog sab hauv cov qauv vim yog qhov qis dua. Tsis tas li ntawd, nws muaj cov thermal conductivity tsis zoo thiab kev siv hluav taws xob siab, ua rau nws nyuaj rau kev ua kom tau raws li cov kev xav tau ntawm kev lag luam niaj hnub rau kev ua haujlwm siab thiab txuag hluav taws xob.
Disadvantages ntawm imitations
Qee cov tuam txhab lag luam coj tus txheej txheem txias isostatic nias los tsim cov crucibles, tab sis vim tsis txaus tsim siab, feem ntau ntawm lawv tsim silicon carbide crucibles. Cov crucibles no muaj cov phab ntsa tuab, cov thermal conductivity tsis zoo, thiab kev siv hluav taws xob siab, uas nyob deb ntawm qhov tseeb molten tooj liab graphite crucibles uas ua los ntawm txias isostatic nias.
Cov ntsiab cai thiab kev siv
Nyob rau hauv cov txheej txheem smelting ntawm txhuas thiab zinc alloys, oxidation kuj thiab thermal conductivity ntawm lub crucible yog qhov tseem ceeb. Cov Crucibles tsim los siv cov txheej txheem txias isostatic nias qhov tshwj xeeb tshwj xeeb rau oxidation tsis kam thaum zam qhov tsis zoo ntawm cov tshuaj fluoride-muaj fluxes. Cov crucibles no muaj kev ua tau zoo heev ntawm qhov kub thiab txias yam tsis muaj kab mob ntawm cov hlau, txhim kho kev ua haujlwm ntev.
Daim ntawv thov hauv aluminium alloy smelting
Graphite crucible plays lub luag haujlwm tseem ceeb hauv kev yaj ntawm aluminium alloys, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov tuag castings thiab castings. Lub melting kub ntawm aluminium alloy yog nyob nruab nrab ntawm 700 ° C thiab 750 ° C, uas kuj yog qhov kub thiab txias qhov twg graphite yooj yim oxidized. Yog li ntawd, graphite crucibles ua los ntawm txias isostatic nias qhov chaw tshwj xeeb rau oxidation kuj los xyuas kom meej kev ua tau zoo ntawm qhov kub thiab txias.
Tsim los rau ntau txoj kev melting
Graphite crucible yog tsim rau ntau txoj kev smelting, nrog rau ib lub qhov cub smelting thiab smelting ua ke nrog kev txuag hluav taws xob. Rau txhuas alloy castings, lub crucible tsim yuav tsum tau raws li qhov yuav tsum tau ntawm kev tiv thaiv H2 haum thiab oxide sib tov, yog li siv ib tug txheem crucible los yog ib tug loj-lub qhov ncauj tais-zoo li tus crucible. Hauv centralized smelting furnaces, tilting crucible furnaces feem ntau yog siv los rov ua dua smelting khib nyiab.
Kev sib piv ntawm kev ua haujlwm zoo
High ceev thiab thermal conductivity
Qhov ceev ntawm graphite crucibles tsim los ntawm txias isostatic nias yog nyob nruab nrab ntawm 2.2 thiab 2.3, uas yog qhov ceev tshaj plaws ntawm crucibles nyob rau hauv lub ntiaj teb no. Qhov siab ceev no muab cov crucible zoo thermal conductivity, zoo dua li lwm hom crucibles.
Glaze thiab corrosion kuj
Qhov saum npoo ntawm molten aluminium graphite crucible yog them nrog plaub txheej txheej tshwj xeeb glaze, uas, ua ke nrog cov khoom siv molding ntom ntom, zoo heev txhim kho corrosion kuj ntawm crucible thiab txuas nws lub neej kev pab cuam. Nyob rau hauv sib piv, domestic crucibles tsuas muaj ib txheej ntawm reinforced cement rau saum npoo, uas yog yooj yim puas thiab ua rau oxidation ntxov ntxov ntawm lub crucible.
Kev sib xyaw thiab thermal conductivity
Lub molten tooj liab graphite crucible siv ntuj graphite, uas muaj thermal conductivity zoo heev. Nyob rau hauv sib piv, domestic graphite crucibles siv hluavtaws graphite, txo cov graphite cov ntsiab lus los txo cov nqi, thiab ntxiv ib tug loj npaum li cas ntawm av nplaum rau molding, yog li ntawd lub thermal conductivity yog ho txo.
Ntim thiab daim ntawv thov thaj chaw
Ntim
Molten tooj liab graphite crucible feem ntau yog bundled thiab ntim nrog straw hlua, uas yog ib txoj kev yooj yim thiab siv tau.
Kev nthuav dav ntawm daim ntawv thov teb
Nrog rau kev nce qib ntawm thev naus laus zis tas li, daim ntawv thov teb ntawm graphite crucibles txuas ntxiv nthuav dav. Tshwj xeeb tshaj yog nyob rau hauv zus tau tej cov txhuas alloy tuag castings thiab castings, graphite crucibles yog maj hloov cov tsoos cam khwb cia hlau lauj kaub kom tau raws li qhov yuav tsum tau ntawm cov khoom zoo ntawm lub tsheb qhov chaw.
nyob rau hauv xaus
Kev siv cov txheej txheem txias isostatic nias tau coj qhov kev ua tau zoo thiab kev ua haujlwm ntawm tooj liab-graphite crucible smelting mus rau qib tshiab. Txawm hais tias nws yog qhov sib xws, lub zog lossis thermal conductivity ntawm cov qauv sab hauv, nws yog qhov zoo dua li cov qauv tsim khoom. Nrog rau kev siv dav dav ntawm cov thev naus laus zis thev naus laus zis no, kev lag luam xav tau rau graphite crucibles yuav txuas ntxiv nthuav dav, tsav tag nrho kev lag luam mus rau yav tom ntej zoo dua thiab ib puag ncig zoo.
Post lub sij hawm: Jun-05-2024