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Graphite Tube

Dab tsi yog Graphite Tube

Graphite tubes yog cov qauv cylindrical ua los ntawm graphite, ib daim ntawv ntawm carbon. Lawv tau siv dav hauv ntau yam kev lag luam vim lawv cov khoom tshwj xeeb.
Graphite tubes yog hollow cylindrical qauv tsim los ntawm graphite, ib yam khoom uas paub txog nws zoo heev thermal thiab hluav taws xob conductivity, raws li zoo raws li nws kub tsis kam. Graphite tubes feem ntau yog tsim los ntawm ntuj los yog hluavtaws graphite, nyob ntawm seb cov kev cai tshwj xeeb ntawm daim ntawv thov. Lawv muaj nyob rau hauv ntau qhov ntau thiab tsawg kom tau raws li qhov xav tau ntawm ntau yam kev lag luam.

Vim li cas thiaj xaiv peb?

01/

Cov khoom zoo:Lub tuam txhab tau cog lus los muab cov neeg siv khoom zoo graphite raw khoom thiab precision graphite khoom ua.

02/

Kev paub nplua nuj:Peb muaj ntau xyoo ntawm kev lag luam kev lag luam thiab ib pab neeg ntawm kev paub txog engineers thiab cov kws tshaj lij los xyuas kom meej meej thiab zoo ntawm peb cov khoom.

03/

Kev pabcuam ntseeg tau:Peb pab neeg tau cog lus los muab kev pabcuam txhim khu kev qha thiab zoo ib yam, kom ntseeg tau tias koj tau txais cov khoom zoo thiab cov neeg siv khoom txhawb nqa los ntawm peb txhua lub sijhawm.

04/

One-stop solution:Peb yog ib qho ntawm Tuam Tshoj txoj kev tsim khoom, kev tshawb fawb thiab kev loj hlob, kev muag khoom ntawm graphite pwm manufacturers.

Tsev 12 3 4 Rau sab kawg

Cov txiaj ntsig ntawm Graphite Tubes

Resistant rau acids
Lub zog muaj zog
Kev cuam tshuam tsis kam
Kev siv cov ntim siab thiab cov nyhuv kub hloov pauv siab
Ntev-ntev thiab yooj yim los tuav

Thaum rhuab los ntawm chav tsev kub txog 2, 000 degree , graphite muaj qhov txawv txav ntawm kev ua kom muaj zog. Internal tensions nyob rau hauv cov khoom muaj feem xyuam rau cov yam ntxwv no. Cov kev ntxhov siab sab hauv uas tshwm sim nyob rau hauv chav tsev kub txo qis thaum cov txheej txheem kub nce, ua rau lub zog ua kom muaj zog raws li qhov tshwm sim. Kev ua kom muaj zog ua kom muaj zog ua rau cov qauv tsim me me thiab tsawg dua kev txhawb nqa lub tshuab, uas ua rau cov khoom loj dua.

Mechanical carbon-graphite qib yog chemically inert, txhais tau tias lawv tsis cuam tshuam los ntawm cov nqi tseem ceeb ntawm feem ntau ntawm cov kua qaub, alkalis, cov kuab tshuaj, thiab lwm yam sib piv. Yog li ntawd, qhov chaw thiab cov khoom tsim los ntawm cov khoom siv tshwj xeeb no zoo meej rau cov khoom siv hauv kev ua zaub mov, tshuaj thiab roj tuav, nrog rau cov twj tso kua mis, vanes, li qub, thiab cov txheej txheem kev lag luam uas corrosion yog qhov teeb meem loj.

Cov pa roj carbon muaj qhov tshwj xeeb thermal poob siab tsis kam thiab yog cov cua kub zoo. Becker carbon-graphite muaj peev xwm "kos" tshav kub uas tsim los ntawm kev sib txhuam ntawm lub ntsej muag thiab diffuse nws. Hauv cov ntawv thov uas xav tau thermal conductivity siab heev, graphitized lossis hlau impregnated qib yuav xav tau.

Txawv impregnants yog ua hauj lwm los sau lub pores nyob rau hauv mechanical carbon-graphite vim nws yuav ua tau ntxeem tau. Qib ntawm graphite tuaj yeem muaj los ntawm qhov ntxeem tau zoo heev mus rau impermeable kiag li. Qee qib nyuaj rau txheej txheem tom qab impregnation, los yog yuav tsum tsis txhob raug machined.

Kev siv ntawm Graphite Tubes

Thaum tshav kub kub Exchangers:Graphite tubes tau siv dav hauv cov khoom siv hluav taws xob vim lawv qhov tshwj xeeb thermal conductivity. Lawv ua tau zoo hloov cua sov ntawm ob cov kua dej, ua rau lawv zoo tagnrho rau kev siv hauv kev lag luam tshuaj, petrochemical, thiab hluav taws xob. Graphite tubes xyuas kom muaj kev sib pauv cua sov zoo thaum tiv taus qhov kub thiab txias ib puag ncig.

Kev lag luam semiconductor:Kev lag luam semiconductor cia siab rau graphite raj rau kev tsim cov silicon wafers. Graphite tubes ua haujlwm li crucibles lossis pwm rau melting thiab solidification ntawm silicon thaum lub sij hawm tsim khoom. Lawv siab purity, thermal stability, thiab non-reactive xwm ua rau lawv haum rau daim ntawv thov tseem ceeb no.

Furnaces thiab Kilns:Graphite tubes pom daim ntawv thov nyob rau hauv qhov kub thiab txias ib puag ncig xws li rauv taws thiab kilns. Lawv yog siv los ua cua sov los yog electrodes los muab cov cua sov thiab pab txhawb ntau yam kev lag luam, nrog rau cov hlau smelting, iav manufacturing, thiab ceramics ntau lawm. Graphite tubes tuaj yeem tiv taus qhov kub thiab txias thaum tswj lawv cov qauv kev ncaj ncees.

Analytical Instruments:Graphite tubes yog siv rau hauv cov cuab yeej tshuaj ntsuam xyuas xws li atomic absorption spectrometers thiab atomic emission spectrometers. Cov cuab yeej no txheeb xyuas cov ntsiab lus ntawm cov qauv los ntawm vaporizing lawv siv qhov kub thiab txias. Graphite tubes ua raws li cov qauv tuav thiab cov vaporization chambers, kom ntseeg tau qhov tseeb thiab txhim khu kev qha.

Manufacturing Methods ntawm Graphite Tubes

Isostatic nias

Isostatic nias yog ib txoj hauv kev siv los tsim cov hlab graphite. Nyob rau hauv cov txheej txheem no, graphite hmoov yog muab tso rau hauv ib lub pwm thiab raug siab los ntawm tag nrho cov lus qhia siv hydraulic xovxwm. Lub siab compacts cov graphite hais, uas ua rau ib tug ntom thiab uniform qauv. Lub molded graphite yog tom qab ntawd kho cua sov los txhim kho nws cov neeg kho tshuab lub zog thiab tshem tawm cov kev ntxhov siab seem.

Extrusion

Extrusion yog lwm txoj kev tsim khoom siv rau graphite tube ntau lawm. Nws suav nrog yuam kom graphite muab tshuaj txhuam los ntawm qhov tuag los ua ib qho cylindrical txuas ntxiv. Cov muab tshuaj txhuam feem ntau yog sib xyaw ntawm graphite hmoov thiab cov ntawv khi uas muab kev sib koom ua ke thaum lub sijhawm extrusion txheej txheem. Lub extruded graphite raj yog tom qab ntawd kho kom tshem tawm cov binder thiab tau txais cov khoom kawg.

Chemical Vapor Deposition (CVD)

Tshuaj vapor deposition yog txheej txheem siv los tsim cov graphite raj zoo. Nyob rau hauv txoj kev no, cov khoom siv substrate, xws li cov pas nrig ceramic lossis graphite mandrel, muab tso rau hauv ib lub chamber. Cov pa roj ua ntej, xws li methane lossis acetylene, tau nkag mus rau hauv lub chamber, thiab cov tshuaj tiv thaiv yog pib los tso cov pa roj carbon atom mus rau qhov chaw substrate. Txheej los ntawm txheej, cov pa roj carbon atoms tsim cov qauv graphite siab, ua rau lub raj graphite.

Graphite Tube txheej txheem

01.

Graphite machining yog siv los tsim cov raj siv cov txheej txheem xws li extrusion, compression molding, lossis isostatic nias. Txhua cov txheej txheem tsim cov qib tshwj xeeb ntawm graphite, pab tau rau ntau lub hom phiaj. Extruded los yog nias graphite feem ntau siv hauv kev tsim khoom. Graphite rods thiab daim hlau uas yog isostatically crushed muaj ntau yam zoo graphite hais thiab smoother nto. Nws yog ib qho yooj yim los qhia cov kev cai sib txawv ntev, diameters, phab ntsa thicknesses, thiab yooj rau cov hlab. Hauv kev sib piv rau cov hlau, graphite tau muaj zog dua li qhov kub thiab txias thiab tsis tshua muaj kev degrade nrog lub sij hawm los yog ib txwm hnav thiab tsim kua muag.

02.

Txawm hais tias txheej graphite rods lossis cov hlab yog xaiv tau, txheej ua rau cov khoom lag luam lub neej thiab kev tiv thaiv corrosion. Txij li thaum siloxane tuaj yeem nres oxidation txawm nyob rau hauv qhov kub thiab txias, nws feem ntau siv los ua cov ntaub npog hauv graphite machining. Hlau graphite sib tov yog ib qho kev xaiv; Txawm li cas los xij, ntshiab graphite ua tau zoo dua nyob rau hauv cov nqe lus ntawm hluav taws xob conductivity thiab durability.

Hom Graphite Tubes

Ntau hom graphite raj muaj xws li:

Carbon-bonded Tube
Carbon-bonded graphite tube yog kev sib xyaw ua ke ntawm extruded graphite hmoov, lubricants, thiab cob. Ua ke, cov khoom no tsim lub raj. Tom qab ntawd lub raj yog muab tso rau hauv qhov kub ntawm 1200 degree. Qhov no ua rau lub raj uas muaj ob qho amorphous carbons thiab graphite. Qhov kub ntau lawm txo qis hluav taws xob thiab qhov hnav thiab tsim kua muag ntawm lub cub tawg.
Carbon-bonded raj tej zaum yuav pheej yig dua li cov graphitized tag nrho. Carbon-bonded tubes muaj qhov porosity ntawm 8 mus rau 10%. Qhov no yog suav tias yog impervious nyob rau hauv ib lub voj voog ci nrog phenolic resin. Nws nthuav tawm cov khoom thermal zoo dua li cov kav dej sib txuas. Nws kuj tau nce thermal thiab mechanical shock resistance.

Resin Graphite Tube
Lub raj graphite muaj cov graphite hmoov sib xyaw nrog cov khoom siv cob, uas yog tom qab ntawd extruded mus rau qhov ntev ntev. Qhov loj resin concentration tsim ib lub raj tsis ntxeem tau uas tsis xav tau ib theem ntxiv ntawm resin impregnation. Lub raj yog raug cua sov ntawm 250 degree tom qab txheej txheem extrusion thiab ces txiav kom zoo. Resin graphite raj muaj qhov txiaj ntsig tseem ceeb tshaj plaws ntawm kev siv nyiaj.
Tus nqi yuav tsawg li ib nrab ntawm ib lub raj uas yog ib nrab graphitized los yog tag nrho graphitized. Txawm li cas los xij, resin graphite tubes muaj kev xeb hauv qhov kub thiab txias dua. Qhov no txo qis lub neej ua haujlwm ntawm cov graphite bar resin.

Siab Graphitized Tube
Tag nrho cov graphitized raj muaj tib yam yooj yim raw cov ntaub ntawv raws li cov bonded graphite hlab nrog hlau. Qhov sib txawv loj yog tias nyob rau hauv lub qhov cub graphitizing, ntawm 2800 degree, lub raj yog graphitized tom qab txoj kev tsim. Nyob rau theem no, tag nrho cov roj amorphous raug rho tawm. Qhov no ua rau cov khoom siv thermal zoo heev. Piv txwv li, tag nrho cov graphitized raj yuav muaj qhov qis tshaj thermal expansion siv, zoo heev qaug zog kam rau ua, nce durability, yooj, thiab siab tshaj thermal conductivity.

Pyrolytic Graphite Tubes
Cov raj no yog tsim los ntawm cov khoom siv pyrolytic zoo tshaj plaws, vim tias cov coated nto yog ntshiab nrog xoom porosity. Cov graphite raj no yog coated nrog CVD txheej. Lub neej ntawd thickness ntawm daim nyias nyias yog feem ntau 30 mus rau 50 micrometers. Pyrolytic graphite tubes yog cov khoom siv hluavtaws tsim los ntawm cov txheej txheem tshuaj vapor deposition. Lub hauv paus ntawm cov pa roj carbon monoxide rau cov txheej txheem no yog cov nkev, xws li methane. Txij li thaum tswj cov purity ntawm cov pa roj yog yooj yim dua li cov khoom graphite, lub purity ntawm pyrolytic graphite yuav siab heev. Tag nrho cov ntsiab lus ntawm impurities feem ntau yog tsawg dua 10ppm. Pyrolytic graphite raj muaj qhov chaw uas muaj cov pa roj carbon purity siab nrog rau lub zog nrog zero porosity.

Graphite yog dab tsi

Graphite yog ib qho ntawm ob qho tib si tshwm sim ntawm cov pa roj carbon ntshiab, lwm qhov yog pob zeb diamond. Graphite tshwm sim nyob rau hauv ob seem, cov qauv qauv molecular thaum lub pob zeb diamond muaj peb qhov qauv siv lead ua. Graphite feem ntau tshwm sim raws li flakes, uas yog ntau txheej ntawm graphene tuav ua ke los ntawm cov nyiaj tsis muaj zog. Graphene yog ib qho, ib qho atom tuab txheej ntawm carbon atoms txheej txheem nyob rau hauv "honeycomb" los yog "tus qaib hlau" qauv. Nws tau raug kwv yees tias muaj peb lab txheej ntawm graphene hauv ib millimeter tuab ntawm graphite. Lub delamination lossis exfoliation ntawm graphite flakes yog li ib txoj hauv kev ua graphene.

Graphite yog tsim los ntawm cov metamorphism ntawm carbon nplua nuj cov ntaub ntawv nyob rau hauv pob zeb uas ua rau lub tsim ntawm crystalline flake graphite, nplua grained amorphous graphite, los yog crystalline leeg los yog pob graphite. Graphite tsis yog hlau tab sis muaj ntau yam khoom ntawm hlau. Nws yog ib qho zoo heev conductor ntawm tshav kub thiab hluav taws xob thiab muaj lub siab tshaj plaws ntuj lub zog thiab nruj ntawm txhua yam khoom. Nws tuav nws lub zog thiab ruaj khov rau qhov kub thiab txias tshaj 3,600 degree thiab tiv taus tshuaj lom neeg. Nyob rau tib lub sij hawm nws yog ib tug ntawm cov lightest ntawm tag nrho cov reinforcing neeg sawv cev thiab muaj lub ntuj lubricity siab.

Kev tsom xam ntawm Kev Ua Haujlwm ntawm Graphite Tube

Atomic absorption spectrometry yog tsim los ntawm atomic resonance hluav taws xob ntawm lub caij los ntawm hauv av xeev atom ntawm cov ntsuas lub hauv lub xeev gaseous. Cov txheej txheem muaj qhov zoo ntawm qhov raug siab, kev xaiv zoo thiab kev soj ntsuam ceev ceev.
Lub graphite absorbs lub teeb nyob rau hauv qhov kub thiab txias, thaum qhov kev ntsuam xyuas yog tsau, cov qauv hauv av lub xeev atoms yog absorbed los ntawm lub teeb monochromatic emitted los ntawm lub hollow cathode teeb raws li lub ntsiab ntawm lub ntse kab teeb qhov chaw, thiab nws absorbance (A) yog. proportional rau qhov concentration (C) ntawm cov khoom hauv cov qauv. Hauv A=KC qauv, K yog qhov tsis tu ncua. Los ntawm kev ntsuas qhov nqus ntawm cov txheej txheem kev daws teeb meem thiab tsis paub daws teeb meem, cov txheej txheem kev daws teeb meem tuaj yeem siv los ua tus qauv nkhaus kom tau txais qhov concentration ntawm lub ntsiab lus los ntsuas hauv qhov tsis paub daws teeb meem.

Cov yam ntxwv ntawm Graphite Tubes

1. Tsawg hluav taws xob tsis kam

2. Kub kub tsis kam

3. Zoo hluav taws xob thiab thermal conductivity

4. High oxidation tsis kam

5. Kev tiv thaiv ntau dua rau thermal thiab mechanical shock

6. Muaj zog txhua yam thiab machining raug

7. Homogeneous qauv

8. Hard nto thiab zoo flexural zog

Yuav ua li cas Graphite Extracted

Graphite yog qhov txawv ntawm nws cov qauv hexagonal crystalline. Ob qho tib si qhib qhov thiab hauv av mining cov txheej txheem yog siv los rho tawm nws. Lub ntuj tshwm sim ore yog dav faib thiab mined thoob ntiaj teb.

Geology, extraction, thiab purifying cov txheej txheem yuav dictate lub flake yam ntxwv ntawm graphite. Cov yam ntxwv flake ces txiav txim siab daim ntawv thov ntawm cov graphite, xws li cov coatings, xaum, roj teeb, hmoov hlau, thiab castings mus rau lubricants.

Raws li nws cov yam ntxwv ntawm lub cev thiab tshuaj lom neeg, ntuj graphite muab faib ua peb hom: flake lossis microcrystalline, macrocrystalline, thiab leeg lossis pob. Vim tias peb hom graphite no muaj nyob hauv ntau qhov chaw geological, lawv txhua tus muaj cov khoom tshwj xeeb. Thaum ob qho tib si qhib lub qhov thiab hauv av mining yog siv los rho tawm flake thiab macrocrystalline graphite, tsuas yog cov mining hauv av yog siv kom tau pob graphite, uas Sri Lanka tau txais.
● Qhib Pit Mining
Pob zeb los yog minerals yog muab rho tawm los ntawm lub qhov qhib qhib los yog qhov thaum lub sij hawm qhib qhov mining. Thaum cov ore nyob ze rau ntawm lub ntiaj teb saum npoo thiab qhov tso nyiaj yog them los ntawm ib txheej nyias ntawm cov khoom siv saum npoo av, txoj kev qhib qhov av yog siv.

Quarrying yog hom mining nto siv los rho graphite los ntawm cov pob zeb los ntawm qhov drilling qhov los ntawm lawv los ntawm blasting lawv qhib nrog dynamite explosives, ces faib lub pob zeb nrog dej los yog compressed cua. Ob qho tib si qhib qhov thiab hauv av mining cov tswv yim siv bore-qhov mining, uas entails drilling ib lub qhov nkag mus rau cov ore, tsim ib tug slurry nrog dej los ntawm ib lub raj, thiab ces nqus dej thiab ore rov qab mus rau lub tank rau kev ua ntxiv.

Cov pob zeb tawv tawv yog kho rau cov txheej txheem drilling thiab blasting kom tso cov graphite flakes loj heev, uas yog tom qab crushed thiab ua tiav ua ntej yuav ntab. Locomotives (los yog nyob rau hauv tsawg dua lub teb chaws tsim, xaiv, shovels, thiab lub laub) thauj cov graphite retrieved rau saum npoo los yog lub Hoobkas rau kev ua ntxiv.

● Underground Mounting
Nyob rau hauv rooj plaub uas cov ore pom nyob rau hauv ib tug ntau dua qhov tob, underground mining yog siv. Cov txheej txheem siv los rho graphite underground yog drift mining, hard pob zeb mining, ncej mining, thiab nqes hav mining. Mus txog qhov tob tshaj plaws ntawm cov ore yuav tsum tau siv cov ncej mining. Rau kev nkag thiab tawm ntawm cov tshuab hnyav thiab cov miners, muaj shafts lossis tunnels.

Rau kev thauj mus los ntawm cov mined ore, ib qho sib txawv yog siv, thiab rau qhov cua, cua tshuab. Slope mining pab khaws cov ore uas tshwm sim nyob rau hauv tib lub ntiaj teb los ntawm kev siv slanted shafts uas tsis sib sib zog nqus. Cov txiv neej thiab cov khoom thauj yog thauj los ntawm conveyors los ntawm cov ncej sib txawv. Drift mining feem ntau yog ua nyob rau hauv toj siab.

Peb lub Hoobkas

Henan Daking Ntshuam thiab Export Co., Ltd. (Henan Daking luv luv) yog ib qho ntawm Tuam Tshoj txoj kev tsim khoom, kev tshawb fawb thiab kev loj hlob, kev muag khoom ntawm graphite pwm manufacturers. Lub tuam txhab tau cog lus los muab cov neeg siv khoom zoo graphite raw khoom thiab precision graphite khoom ua. Cov khoom siv raw siv los ntawm peb lub tuam txhab, xws li isostatic pressed graphite, molded graphite thiab EDM graphite, muaj cov yam ntxwv ntawm lub zog siab, zoo thermal shock resistance, kub tsis kam, corrosion kuj thiab muaj zog oxidation kuj.

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FAQ

Q: Dab tsi yog graphite siv rau?

A: Graphite yog siv rau hauv cov xaum qhuav, roj nplua nyeem, crucibles, foundry faces, polishes, txhuam rau hluav taws xob motors, thiab cores ntawm nuclear reactors. Nws lub siab thermal thiab hluav taws xob conductivity ua rau nws yog ib feem tseem ceeb ntawm steelmaking, qhov twg nws yog siv raws li electrodes nyob rau hauv hluav taws xob arc furnac.

Q: Qhov twg yog graphite feem ntau siv?

A: Siv cov graphite ntuj. Ntuj graphite feem ntau yog siv rau refractories, roj teeb, steelmaking, nthuav graphite, nres linings, foundry ntsib, thiab lubricants.

Q: Koj tau txais graphite qhov twg?

A: Graphite feem ntau pom zoo li flakes lossis crystalline txheej hauv cov pob zeb metamorphic xws li marble, schist's thiab gneisses. Graphite kuj tseem tuaj yeem pom hauv cov organic-nplua nuj shale's thiab thee txaj. Nyob rau hauv cov ntaub ntawv no, lub graphite nws tus kheej tej zaum yuav tshwm sim los ntawm metamorphosis ntawm cov nroj tsuag tuag thiab tsiaj teeb meem.

Q: Cov khoom twg yog tsim los ntawm graphite?

A: Lwm yam khoom siv graphite feem ntau muaj xws li: xaum txhuas, nres hauv ob sab phlu rau cov tsheb loj uas tsis yog tsheb, roj teeb, cov khoom siv laptop, xim, txhuam fais fab thiab crucibles. Crucibles yog cov thawv uas siv los tuav cov kua dej kub heev thiab cov kua dej hauv kev sib tsoo thiab lwm yam kev siv cua sov.

Q: Yuav ua li cas koj fixate graphite?

A: Xaiv ib qho fixative tsim nyog rau graphite los yog charcoal (los yog ib tug universal fixative uas ua hauj lwm rau ob qho tib si) thiab ua raws li cov chaw tsim tshuaj paus cov lus qhia. Feem ntau, tuav cov tshuaj tsuag ntawm qhov deb thiab tshuaj tsuag hauv lub teeb, txawm tias cov tsho loj, tso cai rau txhua txheej kom qhuav ua ntej siv tom ntej.

Q: Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kev siv graphite raj rau thermal conduction?

A: Cov txiaj ntsig tseem ceeb ntawm kev siv graphite tube rau thermal conduction yog nws lub peev xwm los ua kom muaj cua sov kom zoo. Tsis zoo li lwm yam ntaub ntawv uas yuav raug kev txom nyem los ntawm thermal tawg los yog deformation, graphite raj tuav nws cov duab thiab thermal conductivity zog txawm nyob rau hauv huab cua kub. Nws kuj tseem tiv taus corrosion thiab oxidation, ua rau nws zoo meej rau siv nyob rau hauv ib puag ncig hnyav.

Q: graphite raj puas siv tau rau kev sib cuag nrog lwm cov ntaub ntawv, xws li hlau lossis ceramics?

A: Yog, graphite raj tuaj yeem siv rau hauv kev sib cuag nrog lwm cov ntaub ntawv, xws li hlau lossis ceramics. Qhov tseeb, ib qho ntawm qhov zoo ntawm graphite raj yog nws txoj kev sib raug zoo nrog ntau yam khoom siv. Cov coefficient ntawm thermal expansion ntawm graphite zoo ib yam li cov hlau thiab ceramics, uas txhais tau hais tias nws tsis tshua muaj kev tawg thaum raug kev kub ntxhov. Qhov no ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv hauv cov khoom siv hluav taws xob, cov kav dej, thiab lwm yam kev siv hauv kev lag luam.

Q: Yuav ua li cas graphite raj piv rau lwm cov ntaub ntawv siv rau thermal conduction?

A: Graphite raj muaj ntau qhov zoo dua lwm cov ntaub ntawv siv rau thermal conduction. Nws cov thermal conductivity thiab corrosion kuj ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau kev siv kub kub xws li lub cub tawg thiab cov cua sov. Nws kuj tseem muaj zog heev thiab tuaj yeem tiv taus cov tshuaj hnyav thiab cov kuab tshuaj, uas ua rau nws zoo tagnrho rau kev siv tshuaj ua haujlwm thiab ua kom zoo dua qub. Piv nrog rau lwm yam ntaub ntawv, xws li txhuas los yog tooj liab, graphite raj feem ntau raug nqi ntau dua thiab muab kev ua tau zoo dua hauv kev siv ntau yam.

Q: Ua li cas graphite rauv atomic absorption ua haujlwm?

A: Ib qho kev paub txog cov qauv tshuaj yog txhaj rau hauv graphite- lossis pyrolytic carbon-coated graphite raj, uas tuaj yeem ua kom sov kom vaporize thiab atomize cov tshuaj ntsuam xyuas. Cov atoms nqus ultraviolet los yog pom lub teeb ntawm ib lub caij tshwj xeeb wavelength thiab hloov mus rau qib hluav taws xob ntau dua.

Q: Koj ua li cas ntxuav graphite qhov chaw?

A: Ultrasonically ntxuav hauv dej deionized (DI) rau 15 feeb ib zaug. Ntev raug rau lub zog ultrasonic yuav tsim "pitting" hauv graphite cov ntaub ntawv. Yog tias cov dej ntim me me, siv peb 5-feeb ntxuav cov kauj ruam nrog dej tshiab DI txhua zaus.

Q: Vim li cas koj thiaj siv graphite?

A: Graphite yog siv rau hauv cov xaum qhuav, roj nplua nyeem, crucibles, foundry faces, polishes, txhuam rau hluav taws xob motors, thiab cores ntawm nuclear reactors. Nws lub siab thermal thiab hluav taws xob conductivity ua rau nws yog ib feem tseem ceeb ntawm steelmaking, qhov twg nws yog siv los ua electrodes nyob rau hauv hluav taws xob arc furnaces.

Q: Puas yog graphite yog tetrahedral qauv?

A: Txhua carbon atom yog covalently khi rau plaub lwm carbon atoms ntawm plaub fab ntawm lub tetrahedron. Ib txhij piling ntawm cov khaubncaws sab nraud povtseg ntawm carbon atoms npaum li cas rau cov siv lead ua qauv ntawm graphite. Cov pa roj carbon atoms pw hauv fused hexagonal rings hauv txhua txheej, uas ncab infinitely hauv ob qhov ntev.

Q: Puas yog graphite yog qhov zoo ntawm hluav taws xob?

A: Nyob rau hauv graphite molecule, txhua carbon atom lub valence electron nyob ruaj ntseg, ua graphite muaj zog hluav taws xob conductor.

Q: Yuav ua li cas thaum graphite ntub dej?

A: Graphite tseem yuav ua haujlwm thaum nws ntub dej. Qhov tseeb, qee zaum graphite yog tov nrog dej, lossis lwm yam kua, kom cov graphite ntws mus rau txhua qhov chaw ntawm lub tshuab. Cov dej evaporates thiab cov graphite tseem ua kom cov khoom zoo lubricated.

Q: Qhov twg graphite pom?

Q: Koj ua li cas ntxuav graphite qhov chaw?

Q: Cov khoom siv dab tsi yog graphite?

A: Graphite yog ib qho ntxhia ntxhia derivative ntawm carbon. Nws yog ib qho chaw nyob, feem ntau tshwm sim los ntawm sedimentary carbon tebchaw, tab sis kuj tshwm sim nyob rau hauv tej pob zeb uas muaj cov organic carbon, nyob rau hauv magma los yog raws li qhov tshwm sim ntawm kev txo cov sedimentary carbon los ntawm kev txo cov carbonates.

Q: Puas yog graphite yog pob zeb lossis hlau?

A: Graphite yog opaque, non-metallic carbon polymorph uas yog xim dub xim thiab nws yog xim hlau kom dull hauv sheen. Txij li thaum nws zoo li cov hlau lead, nws tseem hu ua cov hlau lead dub lossis plumbago.

Q: 3 qhov piv txwv ntawm graphite yog dab tsi?

A: Graphite yog siv rau hauv cov xaum qhuav, roj nplua nyeem, crucibles, foundry faces, polishes, txhuam rau hluav taws xob motors, thiab cores ntawm nuclear reactors.

Q: Dab tsi yog txheej txheem tsim ntawm graphite?

A: Graphite yog tsim los ntawm cov metamorphosis ntawm sediments uas muaj cov khoom carbonaceous, los ntawm cov tshuaj tiv thaiv ntawm carbon compounds nrog hydrothermal daws los yog magmatic kua, los yog tejzaum nws yog crystallization ntawm magmatic carbon.

Peb nyob nraum kev graphite raj manufacturers thiab lwm tus neeg nyob hauv Suav teb, tshwj xeeb hauv kev muab kev pabcuam zoo. Peb sov siab txais tos koj mus yuav cov qib siab graphite raj ua nyob rau hauv Suav teb nov los ntawm peb lub hoobkas.