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Graphite Block

Dab tsi yog Graphite Block

Ib qho graphite block yog cov khoom zoo ntawm graphite, graphitized graphite electrode, los yog graphite hmoov isostatic nias ua los ntawm cov khoom siv graphite, thiab tom qab ntawd ua rau ntau yam graphite pwm.

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 Blocks

● Graphite blocks yog siv los ua cov khoom muaj peev xwm, txhim khu kev qha.

● Graphite blocks tsim cov khoom siv hluav taws xob uas nthuav tawm cov khoom siv hluav taws xob zoo nrog rau cov khoom zoo refractory (piv txwv li, thermal shock resistance thiab low thermal expansion).

● Graphite blocks nthuav tawm cov neeg kho tshuab siab, siab thermal conductivity, thiab siab ceev.

● Graphite blocks yog machinable heev.

● Cov ntaub ntawv no muaj tshuaj lom neeg ruaj khov thiab hnav.

● Resistance rau cov hlau kub
Nyob rau hauv aluminium smelting systems, zoo blocks yog siv rau sidewalls thiab linings vim hais tias lawv muaj ib tug siab solubility thiab yog resistant rau muaj kub hlau. Vim tias cov blocks muaj qhov porosity tsawg thiab lub neej ntev, cov hlau tsis tuaj yeem permeate lawv.

● Thermal tsis kam
Ib qho ntawm cov laj thawj tseem ceeb ntawm kev thaiv qhov tsis ua haujlwm thiab teeb meem nrog cov hauv ob sab phlu thiab cov phab ntsa ntawm cov cua sov yog thermal tsis kam, los yog cua sov. Lub neej voj voog yog ncua ntev los ntawm kev siv cov khoom siv roj carbon zoo, thiab kev sib xyaw ua ke, sealants, thiab cov txheej txheem tsim khoom rau cov blocks ua kom muaj kev siv txuas ntxiv txawm tias nyob rau hauv cov ntawv thov xav tau tshaj plaws.

Hom Graphite Blocks

Ntau hom graphite blocks muaj xws li:

Pyrolytic Graphite Block
Ib qho pyrolytic graphite block yog siab purity. Nws yog tsim los ntawm kev muab high-purity graphite qhov chaw rau hauv lub cub tawg, ntxiv nitrogen thiab methane nyob rau hauv lub nqus tsev vacuum ntawm qhov kub thiab txias, thiab ces tsim ib txheej nyob rau hauv lub graphite block. Pyrolytic graphite blocks muaj zog tiv thaiv oxidation dua li cov graphite zoo tib yam.

Amorphous Graphite Blocks
Amorphous graphite blocks yog tsim los ntawm amorphous graphite uas yog tsim los ntawm kev sib cuag metamorphism ntawm tus neeg sawv cev metamorphism thiab anthracite thee seam. Hom graphite no yog microcrystalline graphite. Hom graphite no muaj cov ntsiab lus ntawm cov hmoov tshauv ntau dua li lwm hom graphite.

Flake Graphite Blocks
Cov blocks no yog tsim los ntawm ntuj flake graphite uas yog tsim thaum cov khoom siv carbon muab tso rau hauv siab thiab kub. Flake graphite feem ntau pom muaj nyob hauv cov pob zeb metamorphic.

Crystalline Vein Graphite Blocks
Cov hom graphite blocks no yog tsim los ntawm pyrolytic graphite uas xav tias yog ib qho tshwm sim pyrolytic. Crystalline vein graphite blocks yog cov khoom zoo nrog cov ntsiab lus graphitic uas txawv ntawm 94 txog 99%. Cov qauv ntshiab tshaj plaws ntawm hom graphite no los ntawm nruab nrab ntawm cov leeg. Cov hlab ntsha crystalline tsim cov graphite blocks uas muaj hluav taws xob ntau dua thiab thermally conductive dua li lwm hom graphite ntuj.

Synthetic Graphite Blocks
Cov blocks no yog tsim los ntawm hluavtaws graphite uas yog tsim los ntawm coke thiab suab. Synthetic graphite muaj purity siab dua li ntuj graphite. Muaj ob hom hluavtaws graphite. Muaj ob hom hluavtaws graphite, electrographite thiab hluavtaws graphite.

Yuav Ua Li Cas Graphite Blocks tau ua

Cov graphite block yog tau los ntawm kev sib xyaw graphite flakes ntawm txhua qhov loj me nrog graphene oxide nplooj ntawv thiab raug cov sib tov kom siab thiab siab. Nrog rau txoj kev no loj graphite blocks tuaj yeem tau txais kev lag luam thiab nrawm.
Muaj ntau ntau hom txheej txheem siv los tsim cov graphite blocks. Cov kev siv feem ntau yog molding, extrusion, thiab isostatic nias. Cov txheej txheem ntau lawm ntawm graphite blocks ua raws ntau theem sib txawv. Thawj theem yog crushing thiab sib tsoo. Cov txheej txheem pib nrog crushing thiab sib tsoo. Tom qab ntawd, cov khoom yog tov thiab kneaded, tom qab ntawd crushing thiab tshuaj ntsuam. Cov theem tom ntej muaj xws li nias, ci, thiab impregnation. Nyob rau hauv cov theem kawg, cov graphite undergoes graphitization, machining, thiab kuaj. Thaum kawg, cov khoom kawg yog tsim.

Vim li cas thiaj xaiv Graphite Blocks

Cov khoom tseem ceeb ntawm cov pa roj carbon monoxide yog activated carbon granules thiab cov khoom sib khi uas ua rau cov pa roj carbon monoxide khaws tau qhov chaw zoo li qub nrog kev hwm rau ib leeg. Txhawm rau kom muaj kev sib luag ntawm kev ua tau zoo thiab tiv thaiv dej los ntawm channeling, uas nquag nrog granular activated carbon (GAC), carbon block immobilizes carbon hais. Nyob rau hauv lub nkoj siab los yog ntim cov cartridge, GAC feem ntau ntim rau hauv lub txaj xoob. Cov kab xoob ntawm cov pa roj carbon monoxide yog hla los ntawm dej, uas ua raws li txoj hauv kev ntawm kev tiv thaiv tsawg kawg nkaus. Siv cov pa roj carbon thaiv, ib daim cartridge nrog qee qhov ntev yog tsim. Cov kaus mom kawg yog siv los tsav dej los ntawm qhov chaw zoo li qub ntawm cov pa roj carbon thaiv.

Vim tias cov qauv pore zoo sib xws ntawm txhua tus neeg granule ntawm carbon, cov pa roj carbon blocks tuaj yeem txo cov kab mob sib kis tau zoo dua li lwm cov ntaub ntawv. Raws li qhov tshwm sim ntawm cov pa roj carbon thaiv cov qauv pore zoo ib yam thiab lub sijhawm sib cuag nrog lub lim dej ntev dua, lub block muaj peev xwm txhim kho kom tshem tawm cov pa phem. GAC thiab carbon block daim ntawv thov nquag siv cov pa roj carbon hauv POU dej pom. Txawm li cas los xij, piv rau GAC, cov pa roj carbon blocks muaj kev ua haujlwm zoo dua thiab cov pa roj carbon ntau dua, uas ua rau nws txo qis lossis tshem tawm cov kab mob hauv lub sijhawm sib cuag tsawg. Tsis tas li ntawd, qhov txo qis hauv daim ntawv ua rau cov neeg tsim cov pa roj carbon blocks los tsim cov lim dej ua haujlwm siab hauv ntau qhov kev cog lus thiab ntau yam khoom tsim.

Vim tias nws muaj txiaj ntsig zoo hauv kev tshem tawm cov impurities, tus nqi pheej yig, kev tsim qauv tsim, kev siv cov khoom siv txuas ntxiv dua tshiab, cov qauv me me, thiab kev tiv thaiv kab mob kev loj hlob, cov pa roj carbon block feem ntau yog qhov kev xaiv zoo tshaj hauv kev siv dej lim dej.

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.

Kev siv ntawm Graphite Blocks

Graphite blocks yog siv nyob rau hauv graphitization furnaces, silicon carbide furnaces, thiab lwm yam metallurgical furnaces.Lawv yog siv raws li ib tug conductive khoom rau lub cub tawg linings nyob rau hauv kuj furnaces. Lawv kuj siv rau impermeable graphite tshav kub exchangers. Graphite blocks feem ntau siv hauv metallurgy, electronics, steel, thiab tshuaj industries. Cov khoom tsim los ntawm graphite blocks yog qhov zoo heev thiab lawv muaj kev ua haujlwm ruaj khov.

Graphite blocks yog siv los ua hlau ua electrodes. Cov electrodes no muaj cov khoom siv hluav taws xob siab zoo nrog rau cov khoom zoo refractory zoo li thermal poob siab tsis kam thiab qis thermal expansion. Lwm daim ntawv thov ntawm graphite blocks suav nrog lawv tau siv rau hauv cov ntawv thov kub-nias pwm nrog rau siv los ua cov nozzles rau nruam casting hlau. Graphite blocks yog siv los tsim cov graphite daim hlau uas siv los sau cov khau rau cov tsheb ciav hlau hluav taws xob, txawm tias lawv cov kev siv yuav txo qis vim kev tsav tsheb ceev.

Polycrystalline graphite blocks yog ib qho ntawm cov khoom siv zoo tshaj plaws siv hauv kev siv nuclear-fission vim lawv cov kev ua haujlwm siab zoo nrog rau kev nqus qis qis rau cov neutrons. Graphite blocks yog siv nyob rau hauv high-temperature gas-cooled reactors. Nyob rau hauv cov reactors, graphite cov ntaub ntawv yog siv raws li ib tug mus tas li reflectors nyob rau sab nrauv. Nyob rau hauv lub sab hauv, lawv yog siv raws li replaceable reflectors. Ntawm qhov chaw, lawv tau siv los ua cov khoom siv roj, thiab ua cov txheej txheem ntawm cov roj me me.

Cov yam ntxwv ntawm Graphite Block

Kub kub kuj:Graphite block yog ib qho ntawm tam sim no paub cov ntaub ntawv kub resistant. Nws cov ntsiab lus melting yog 3850 degree ± 50 degree, thiab nws qhov kub kub nce mus txog 4250 degree. Nws muaj 10S nyob rau hauv 7000 degree ultra-siab kub arc, thiab qhov poob ntawm graphite yog me me. graphite poob yog 0.8% los ntawm qhov hnyav. Nws tuaj yeem pom tias qhov kub tsis kam ntawm graphite yog qhov tseem ceeb heev.

Tshwj xeeb thermal shock kuj:Graphite muaj qhov zoo thermal poob siab tsis kam, uas yog, thaum kub hloov pauv sai sai, coefficient ntawm thermal expansion me me, yog li nws muaj thermal stability zoo, thiab nws yuav tsis tawg thaum kub hloov sai.

Thermal conductivity thiab hluav taws xob conductivity:Graphite muaj qhov zoo thermal thiab hluav taws xob conductivity. Piv nrog rau cov ntaub ntawv zoo tib yam, nws cov thermal conductivity yog siab heev. Nws yog 4 zaug siab dua cov hlau tsis muaj steel thiab 2 zaug siab dua cov hlau carbon. Qhov dav dav uas tsis yog hlau yog 100 npaug siab dua.

Lubricity:Lub lubricating kev ua tau zoo ntawm graphite zoo ib yam li molybdenum disulfide, thiab kev sib txhuam coefficient tsawg dua 0.1. Nws cov lubricating kev ua tau zoo sib txawv nrog qhov loj ntawm cov nplai. Qhov loj ntawm cov nplai, qhov me me ntawm kev sib txhuam coefficient thiab qhov zoo dua lub lubrication.

Chemical stability:Graphite muaj cov tshuaj zoo ruaj khov ntawm chav tsev kub, thiab tiv taus cov kua qaub, alkali thiab organic hnyav corrosion.

Kev tsim cov txheej txheem ntawm Graphite Blocks

Lub ntsiab raw khoom ntawm graphite block khoom yog calcined zoo roj av coke. Tom qab crushing, tshuaj ntsuam, sib tsoo thiab lwm yam txheej txheem, thee tar suab yog siv los ua cov nplaum. Thaum cua sov thiab tshem tawm cov khoom tsis haum, nws yog tov rau hauv txhua txoj hauv kev kom nws muab tshuaj txhuam nrog cov yas muaj zog. Cov khoom muab tshuaj yog muab tso rau hauv pwm thiab tsim los ntawm kev vibration molding. Thaum lub sij hawm tsim cov txheej txheem, cov cua kub, pressurization thiab lub tshuab nqus tsev twj tso kua mis yog nqa tawm nyob rau tib lub sij hawm, thiaj li yuav xyuas kom meej lub uniformity thiab sib xws ntawm lub sab hauv thiab sab nraud zoo ntawm cov khoom, tom qab tuav lub static siab nyob rau hauv pwm rau ib lub sij hawm. , cov khoom tuaj yeem raug cais tawm ntawm cov pwm thiab nkag mus rau cov txheej txheem roasting tom ntej nrog lub sijhawm ntev tshaj plaws. Lub voj voog ntau lawm ntawm graphite block yog 90-115 hnub.

Cov Khoom ntawm Graphite Block

Lub melting point ntawm kub resistant graphite yog 3850 ± 50 degree, txawm tias tom qab kub kub arc hlawv, qhov hnyav poob me me, thermal expansion coefficient tsawg heev. Lub zog ntawm graphite nce nrog qhov nce ntawm qhov kub thiab txias. Thaum 2000 degree, lub zog ntawm graphite yog ob npaug.

Hluav taws xob thiab thermal conductivity ntawm graphite yog ib puas npaug siab dua li cov hlau tsis yog hlau. Lub thermal conductivity yog siab dua hlau, hlau, txhuas thiab lwm yam ntaub ntawv hlau. Lub thermal conductivity txo qis nrog qhov kub thiab txias, thiab txawm tias nyob rau hauv qhov kub thiab txias, graphite ua rau adiabatic. Graphite ua hluav taws xob vim tias txhua cov pa roj carbon atom hauv graphite tsuas yog peb daim ntawv cog lus nrog lwm cov pa roj carbon atom, thiab txhua cov pa roj carbon atom tseem khaws ib qho hluav taws xob dawb los thauj cov nqi.

Lub lubrication kev ua tau zoo ntawm lubricating graphite nyob ntawm qhov loj ntawm cov graphite flake, qhov loj ntawm cov flake, qhov me me ntawm kev sib txhuam coefficient, qhov zoo ntawm lubrication kev ua tau zoo.

Chemical stability graphite ntawm chav tsev kub muaj cov tshuaj zoo stability, tuaj yeem tiv taus acid, alkali thiab organic hnyav corrosion.

Plasticity ntawm graphite toughness yog zoo, tuaj yeem dov rau hauv ib daim ntawv nyias heev.

Thermal shock resistance graphite ntawm chav tsev kub thaum siv tuaj yeem tiv taus qhov kev hloov pauv ntawm qhov kub thiab txias yam tsis muaj kev puas tsuaj, kub hloov pauv, qhov ntim ntawm graphite hloov me ntsis, yuav tsis tsim cov kab nrib pleb.

3 Thermal Properties uas ua rau graphite yog cov khoom zoo heev rau kev siv kub

Graphite qhov tseem ceeb tshaj plaws, thiab cov cuab yeej tshwj xeeb tshaj plaws, yuav tsum yog nws cov khoom thermal zoo kawg. Tsis tsuas yog nws ua kom sov zoo heev, tab sis nws kuj muaj qhov zoo tshaj plaws CTE qhov tseem ceeb (coefficients ntawm thermal expansion), thiab cov khoom yog qhov nyuaj heev rau yaj ~ yielding qhov kub siab melting point. Qhov tseeb, technically hais lus, graphite tsis muaj melting point kom txog thaum koj mus txog kwv yees li 100 cua. Thiab ntawm qhov taw tes, qhov melting point yog nyob nruab nrab ntawm 3, 600-4,200 degree K, uas yog kwv yees li 6,000-7,000 degree F. Qhov no yog kwv yees li ob feem peb ntawm qhov kub ntawm peb. hnub lub photophere. Thiab zoo li cov pa roj carbon dioxide, cov khoom siv ncaj qha los ntawm cov khoom hauv lub xeev mus rau lub xeev gaseous. Yog li ntawd, cov pa roj carbon monoxide yog ib qho ntawm cov khoom siv thaum nws los txog rau cov ntawv siv hluav taws xob thiab cov khoom siv hluav taws xob.
1. Melting Point
Vim tias cov khoom siv lub siab melting point, graphite feem ntau yog siv los ua crucibles, cov khoom uas yog molded, thiab cov phaj tshwj xeeb (los yog phab ntsa liners) rau cov cua kub kub thiab hluav taws kub, chav tsev, txee, chaw ruaj ntseg, thiab lwm yam. Muaj ntau yam khoom siv uas yog molded tau, thiab feem ntau siv graphite pwm los tsim lawv. Txawm li cas los xij, ua ntej cov khoom tuaj yeem ua pwm, cov khoom siv molten yog thawj zaug. Qhov no yog qhov chaw crucible los ua si. Thaum metallurgists ua ntej yaj cov khoom, graphite crucibles feem ntau yog siv los yaj nws thiab tuav lawv, ua ntej lawv tuaj yeem nchuav. Tom qab ntawd thaum cov ntaub ntawv molten no tau nchuav rau hauv kab noj hniav (ingot pwm, txhaj tshuaj pwm, tshuab pwm, casting tuag, thiab lwm yam), cov ntaub ntawv graphite feem ntau siv rau cov pwm tiag tiag thiab. Qhov no yog pom tseeb vim graphite lub ntuj tsis kam thiab kev tiv thaiv rau qhov kub siab heev. Cov pa roj carbon fibers kuj tseem siv rau hauv cov khoom siv hluav taws xob, nrog rau cov khoom siv, rooj tog zaum, thiab lwm yam khoom siv hauv tsev thiab. Thaum cov khoom no tuaj yeem ua tau thiab tseem tuaj yeem ntes hluav taws, cov pa roj carbon fibers uas cuam tshuam, sib xyaw, thiab woven rau hauv cov ntaub ntawv no feem ntau txo qis tag nrho cov nplaim taws, thiab qee zaum lawv muaj tus kheej tua tus kheej ib yam nkaus. Tsis tsuas yog carbon siv nyob rau hauv hluav taws kub retardant cov ntaub ntawv, nws kuj yog siv nyob rau hauv fireproofing systems ib yam nkaus thiab ~ nyob rau hauv daim ntawv ntawm graphite daim hlau. Cov phiaj no feem ntau muab tso rau ntawm phab ntsa ntawm chav tsev, txee, thiab chaw ruaj ntseg los tiv thaiv lawv (thiab thaum kawg lawv cov ntsiab lus) los ntawm hluav taws.

2. High thermal conductivity
Graphite kuj muaj cov khoom siv hluav taws xob zoo tshaj plaws. Qhov no yog inevitably vim lawv impressive thermal conductivity. Ntau cov ntaub ntawv graphite muaj cov conductivity siab li 120-240 W/m degree K (70-140 degree F). Cov conductivity ntawm ib co graphite composites raug ntsuas siab li 1, 000-2, 000 W/m degree K. Cov ntaub ntawv uas muaj thermal conductivity (cov ntaub ntawv xws li cov no) feem ntau yog siv nyob rau hauv daim ntawv thov qhov twg tshav kub. lub zog yuav tsum tau dissipated. Cov dab dej kub, cov ntaub thaiv cua sov, thiab cov khoom siv hluav taws xob yog cov piv txwv tseem ceeb ntawm no. Feem ntau yog ua los ntawm graphite thiab carbon composites. Qee lub sij hawm carbon fibers tau siv nyob rau hauv motherboards thiab circuit boards kom dissipate tshav kub kom deb ntawm qhov tseem ceeb, kub rhiab Cheebtsam. Cov ntaub ntawv tib yam no kuj tau siv nyob rau hauv LED thermal tswj systems, thiab nyob rau hauv lub thermal cores ntawm advanced avionics.

3. Tsawg Coefficient ntawm Thermal Expansion
Graphite kuj yog tshwj xeeb vim nws cov thermal expansion zog (CTE). Feem ntau, thaum cov khoom siv los yog cov khoom cua sov, nws nthuav. Txawm li cas los xij, graphite muaj qhov coefficient tsawg heev ntawm thermal expansion; uas txhais tau hais tias nws tuaj yeem ua kom sov thiab raug kub hnyiab heev yam tsis tau nthuav dav ntau. Qhov no yog qhov tseem ceeb heev thiab tseem ceeb heev thaum nws los txog rau cov khoom siv rau hauv cov khoom siv hluav taws xob, cov pwm uas siv hauv kev lag luam pwm, iav ua cov cuab yeej, thiab txawm tias qee cov epoxies thiab thermal pastes.

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: Yuav ua li cas yog graphite blocks?

A: Cov graphite block yog tau los ntawm kev sib xyaw graphite flakes ntawm txhua qhov loj me nrog graphene oxide nplooj ntawv thiab raug cov sib tov kom siab thiab siab. Nrog rau txoj kev no loj graphite blocks tuaj yeem tau txais kev lag luam thiab nrawm.

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 thaiv hluav taws xob?

A: Tseeb, ib zaj duab xis uas muaj tsib daim ntawm stacked graphite films (nyob ib ncig ntawm 385 nm tuab nyob rau hauv tag nrho) muaj EMI SE ntawm ib ncig ntawm 28 dB, uas txhais tau hais tias cov khoom yuav thaiv 99.84% ntawm qhov teeb meem hluav taws xob.

Q: Koj siv graphite blocks li cas?

A: Nws tuaj yeem pab ua haujlwm los ntawm sab saum toj mus rau hauv qab yog li koj tsis tas yuav lean ntawm txhua qhov chaw thiab ua rau koj ua haujlwm. ~ Thaum siv cov blocks, tuav lawv nrog koj tus ntiv tes so rau pem hauv ntej. Qhov no yuav ua rau nws yooj yim rau kev tswj thiab tsim thiab txawm tias lub siab sib xws.

Q: Cov khoom siv dab tsi yog graphite?

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 ib yam li cov hlau lead, nws tseem hu ua coloquially li dub lead 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 graphite blocks siv rau?

A: Graphite blocks yog siv rau hauv graphitization furnaces, silicon carbide furnaces, thiab lwm yam metallurgical furnaces. Lawv yog siv los ua cov khoom siv hluav taws xob rau cov kab hluav taws xob hauv cov hluav taws xob tiv thaiv. Lawv kuj siv rau impermeable graphite tshav kub exchangers.

Q: Dab tsi yog qhov zoo ntawm graphite?

A: Graphite muaj ntau yam zoo uas tau ua rau nws cov khoom siv dav siv rau EDM electrodes. Nws yog ib qho yooj yim rau tshuab. Nws yog heev resistant rau thermal shock. Nws muaj cov coefficient tsawg ntawm thermal expansion (3 zaug qis dua tooj liab) uas lav kev ruaj ntseg ntawm electrode geometry thaum lub sij hawm electrodes machining.

Q: Vim li cas graphite tshwj xeeb?

A: Nws yog qhov tshwj xeeb uas nws muaj cov khoom ntawm cov hlau thiab cov hlau tsis muaj hlau: nws hloov tau yooj yim tab sis tsis elastic, muaj thermal conductivity thiab hluav taws xob siab, thiab muaj zog heev refractory thiab chemically inert. Graphite muaj qhov tsis tshua muaj adsorption ntawm X-rays thiab neutrons ua nws cov khoom siv tshwj xeeb hauv kev siv nuclear.

Q: Dab tsi yog cov ntsiab lus hauv lub tsev thaiv ntawm graphite?

A: Graphite muaj cov nplooj ntawv ntawm trigonal planar carbon. Cov khaubncaws sab nraud povtseg yog hu ua graphene. Nyob rau hauv txhua txheej, cov pa roj carbon atom yog teem rau hauv ib tug honeycomb lattice nrog ib daim ntawv cog lus ntev ntawm {{0}}.142 nm, thiab qhov deb ntawm dav hlau yog 0.335 nm.

Q: Koj puas tuaj yeem txiav graphite blocks?

A: Graphite yog mos heev yog li koj tuaj yeem txiav thiab laum nws yooj yim heev, tej zaum yooj yim heev.

Q: Dab tsi yog qhov zoo ntawm graphite?

A: Hauv cov ntsiab lus, cov graphite purification rauv muaj qhov zoo xws li qhov kub thiab txias, kev tiv thaiv corrosion, thermal conductivity thiab txhua yam muaj zog, tab sis nws kuj muaj qhov tsis zoo xws li cov khoom siv siab, txwv kub ntau, thermal expansion coefficient thiab carbon hmoov.

Q: Dab tsi yog ntxhia graphite?

A: Nqe lus piav qhia. Ntshiab graphite yog ib daim ntawv ntxhia ntawm cov khoom carbon (element #6, cim C). Nws tsim raws li cov hlab ntsha thiab kev nthuav tawm hauv cov pob zeb metamorphic raws li qhov tshwm sim ntawm metamorphism ntawm cov khoom siv organic suav nrog hauv limestone deposits.

Q: Dab tsi dissolves graphite?

A: Graphite yog insoluble hauv dej thiab organic solvents - rau tib yam vim li cas pob zeb diamond yog insoluble. Attractions ntawm hnyav molecules thiab carbon atoms yuav tsis muaj zog txaus los kov yeej cov muaj zog covalent bonds nyob rau hauv graphite. Graphite txawm li cas los xij, yog soluble hauv molten nickel thiab sov chlorosulfuric acid.

Q: Cov teeb meem dab tsi daws tau graphite?

A: Ntawm ntau daim ntawv thov, ntuj thiab hluavtaws graphite yog siv rau electrodes, refractories, roj teeb thiab lubricants thiab los ntawm foundries. Coated spherical graphite yog siv los tsim cov anode hauv lithium-ion roj teeb. High-grade graphite kuj tseem siv rau hauv roj hlwb, semiconductors, LEDs thiab nuclear reactors.

Q: Dab tsi temp ua graphite ci?

A: Thov nco ntsoov tias cov khoom tsis kho tau pib yaj hauv daim duab ntawm 1,400 F rau 3 teev. Ua haujlwm ntawm cov kub no, cov graphite yeej muaj cov txiv kab ntxwv ci.

Q: Qhov twg graphite pom?

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: Vim li cas graphite dub?

A: Hauv cov thee thiab graphite, lub teeb tau daig ntawm cov atoms, uas yog vim li cas lawv saib tsaus thiab opaque.

Q: Puas yog graphite siv lead ua?

A: Graphite yog crystalline daim ntawv ntawm cov khoom carbon. Nws muaj cov txheej txheej ntawm graphene. Graphite tshwm sim ib txwm muaj thiab yog daim ntawv ruaj khov tshaj plaws ntawm cov pa roj carbon monoxide raws li tus qauv.

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