Cov txheej txheem:
- Vim li cas crucibles ua los ntawm graphite?
- Cov khoom siv dab tsi yog siv los ua crucibles?
- Vim li cas graphite tsis hlawv hauv lub crucible?
- Ntau npaum li cas cov graphite crucible coj tau?
Video: Crucibles ua li cas?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Ceramic crucibles yog ua los ntawm cov av nplaum hluav taws kubthiab ruaj khov ntawm qhov kub thiab txias. Lawv tau siv hauv kev ua hlau rau ntau tshaj 7000 xyoo. Niaj hnub nimno ceramic crucibles feem ntau tsim nrog av nplaum thiab graphite kom ruaj khov.
Vim li cas crucibles ua los ntawm graphite?
Hluav Taws Xob Hluav Taws Xob
Crucibles yuav tsum muaj siab graphite cov ntsiab lus hauv cov pa roj carbon binder rau kev txuag hluav taws xob thiab siab thermal conductivity. Lawv yog lub phiab zoo li tus thiab muab tso rau ntawm qhov sib npaug ntawm qhov sib npaug ntawm cov khoom cua sov.
Cov khoom siv dab tsi yog siv los ua crucibles?
Carbon-bonded thiab ceramic-bonded av nplaum graphite thiab silicon carbide crucibles yog siv dav hauv melting thiab tuav aluminium thiab aluminium alloys, aluminium-bronze, tooj liab thiab tooj liab-raws li alloys, cupro-nickel thiab npib tsib xee-bronze alloys, precious hlau, zinc thiab zinc oxide. Crucibles kuj yog siv rau hauv melting cam khwb cia hlau.
Vim li cas graphite tsis hlawv hauv lub crucible?
Hmoov tsis zoo, lawv tsuas yog coated rau sab nraud, yog li sab hauv tseem raug degradation. Nrog rau cov khoom siv graphite, lawv hloov mus rau CO2, yog li muaj tsis muaj seem uas yuav ua rau koj ntseeg tias lawv tau hlawv.
Ntau npaum li cas cov graphite crucible coj tau?
Graphite crucible qhov siab tshaj plaws tuaj yeem mus raws li siab li 5000 ° F thiab tuaj yeem siv rau hauv qhov cub thiab cov txheej txheem kub kub. Graphite crucibles muaj ntau daim ntawv thov nyob rau hauv lub foundry, kuaj kuaj, li qub, sprinklers, thiab lwm yam khoom hnyav. Graphite crucibles tsis ntxeem tau.
Pom zoo:
Yuav ua li cas loj npaum li cas ntawm youtube thumbnail?
Image loj & daws teeb meem Muaj daws teeb meem ntawm 1280x720 (nrog qhov dav yam tsawg kawg nkaus ntawm 640 pixels). Muab tso rau hauv cov duab hom xws li JPG, GIF, lossis PNG. Nyob rau hauv qhov txwv 2MB. Sim siv 16: 9 nam piv raws li nws yog qhov siv tshaj plaws hauv YouTube players thiab saib ua ntej .
Txhais li cas rau cov protein kom denatured thiab yuav ua li cas lawv thiaj ua tau zoo?
Denaturation, hauv biology, txheej txheem hloov kho cov qauv molecular ntawm cov protein… Cov proteins uas tau hloov pauv muaj qhov xoob, ntau dua random qauv; feem ntau yog insoluble. Denaturation tuaj yeem coj los ntawm ntau txoj hauv kev-xws li, los ntawm cua sov, los ntawm kev kho nrog alkali, kua qaub, urea, los yog detergents, thiab los ntawm kev tshee tshee .
Yuav ua li cas tsis ncaj ncees txhais li cas?
Kev Ua Phem Tsis Txaus Siab txhais tau tias txhob txwm tsis quav ntsej txog kev ua tau zoo thiab ua tib zoo saib xyuas cov qauv kev ua tau zoo lossis kev coj ua raws li Daim Ntawv Cog Lus nrog kev paub tias yuav ua rau muaj kev raug mob rau ib tus neeg lossis tus neeg lossis poob lossis puas khoom .
Vim li cas cov lus nug loaded txhais li cas?
Ib nqe lus nug yog ib daim ntawv ntawm cov lus nug nyuaj uas muaj qhov kev xav tsis sib haum(piv txwv li, kev xav ua txhaum). Cov lus nug zoo li no yuav raug siv los ua cov cuab yeej hais lus: cov lus nug sim txwv cov lus teb ncaj qha los ua cov uas ua haujlwm rau tus neeg nug cov txheej txheem .
Yuav sau li cas vim li cas thiab yog vim li cas?
Kev txhais ntawm yog vim li cas thiab (tus) yog li ntawd: yog vim li cas rau ib yam Nws piav qhia vim li cas thiab yog li ntawd ntawm tus nqi nce . Yuav ua li cas thiab yog vim li cas? Txhua qhov laj thawj thiab qhov laj thawj, ib yam li hauv Nws tau mus rau qhov laj thawj thiab yog li ntawm lub koom haum kev saws me nyuam txoj cai thiab cov txheej txheem.
