Graphite yog crystalline daim ntawv ntawm carbon.Hexagonal siv lead ua system, hlau number case rau tsaus grey.Qhov ceev 2.25 g / cm3, hardness 1.5, melting point 3652 ℃, boiling point 4827 ℃.Mos nyob rau hauv kev ntxhib los mos, nrog ib tug du thiab conductive xav.Cov khoom siv tshuaj tsis muaj zog, corrosion-resistant, thiab tsis yooj yim reactive nrog acids, alkalis, thiab lwm yam. Ua kom muaj zog cua sov hauv huab cua lossis oxygen tuaj yeem hlawv thiab tsim cov pa roj carbon dioxide.Cov oxidants muaj zog yuav oxidize nws mus rau hauv cov organic acids.Siv los ua tus neeg saib xyuas kev sib txhuam thiab cov khoom siv lubricating, ua cov crucibles, electrodes, roj teeb qhuav, thiab xaum xaum.High purity graphite yuav siv tau raws li neutron moderator hauv nuclear reactors.Nws feem ntau hu ua charcoal los yog dub txhuas vim nws tau ua yuam kev yav dhau los rau txhuas.

1. Raws li cov ntaub ntawv refractory: graphite thiab nws cov khoom muaj cov khoom ntawm qhov kub thiab txias tsis kam thiab siab zog.Hauv kev lag luam metallurgical, nws tsuas yog siv los ua graphite crucibles.Hauv steelmaking, graphite feem ntau yog siv los ua tus neeg sawv cev tiv thaiv rau steel ingots thiab hauv ob sab phlu ntawm metallurgical rauv.

2. Raws li cov khoom siv hluav taws xob: siv hauv kev lag luam hluav taws xob los tsim cov khoom siv hluav taws xob, txhuam, cov pa roj carbon monoxide, cov roj carbon raj, cov electrodes zoo rau mercury zoo tam sim no transformers, graphite gaskets, xov tooj qhov chaw, coatings rau TV raj, thiab lwm yam.

3. Raws li cov khoom hnav-resistant lubricating: Graphite feem ntau yog siv los ua cov roj nplua nyeem hauv kev lag luam.Lubricating roj feem ntau tsis tuaj yeem siv nyob rau hauv high-speed, high-temperature, thiab high-pressure tej yam kev mob, thaum graphite hnav-resistant cov ntaub ntawv yuav ua hauj lwm yam tsis muaj lubricating roj ntawm high zawv zawg speeds ntawm kub ntawm 200-2000 ℃.Ntau cov khoom siv thauj khoom corrosive yog dav siv los ntawm cov khoom siv graphite los ua lub khob piston, sealing rings, thiab bearings, uas tsis tas yuav ntxiv cov roj lubricating thaum ua haujlwm.Graphite emulsion kuj yog cov roj nplua nyeem zoo rau ntau cov hlau ua haujlwm (xov hlau, kos duab raj).

4. Graphite muaj tshuaj ruaj khov zoo.Tshwj xeeb ua tiav graphite muaj cov yam ntxwv ntawm corrosion kuj, zoo thermal conductivity, thiab tsis tshua muaj permeability, thiab yog dav siv nyob rau hauv zus tau tej cov tshav kub exchangers, cov tshuaj tiv thaiv tank, condensers, combustion towers, nqus yees, coolers, heaters, lim, thiab twj tso kua mis khoom.Kev siv dav hauv kev lag luam xws li petrochemical, hydrometallurgy, acid-base ntau lawm, hluavtaws fibers, papermaking, thiab lwm yam, nws tuaj yeem txuag tau ntau cov ntaub ntawv hlau.

Ntau yam ntawm impermeable graphite sib txawv hauv corrosion kuj vim muaj cov resins sib txawv.Phenolic resin impregnators yog acid resistant tab sis tsis alkali resistant;Furfuryl cawv resin impregnators yog ob qho tib si acid thiab alkali resistant.Lub tshav kub tsis kam ntawm ntau hom kuj txawv: carbon thiab graphite tuaj yeem tiv taus 2000-3000 ℃ hauv qhov chaw txo qis, thiab pib oxidize ntawm 350 ℃ thiab 400 ℃ feem hauv qhov chaw oxidizing;Ntau yam ntawm impermeable graphite sib txawv nrog tus neeg sawv cev impregnating, thiab feem ntau nws yog kub-resistant rau hauv qab 180 ℃ los ntawm impregnating nrog phenolic lossis furfuryl cawv.

5. Casting, sanding, tuag casting thiab kub kub metallurgical cov ntaub ntawv: vim lub me coefficient ntawm thermal expansion ntawm graphite thiab nws muaj peev xwm tiv taus cov kev hloov ceev ceev hauv txias thiab cua sov, nws yuav siv tau raws li lub casting pwm ntawm glassware.Tom qab siv graphite, cov hlau ferrous tuaj yeem tau txais qhov loj me me, cov txiaj ntsig siab ntawm qhov chaw du, thiab tuaj yeem siv yam tsis muaj kev ua haujlwm lossis ua haujlwm me ntsis, yog li txuag tau ntau cov hlau.Kev tsim cov alloys nyuaj thiab lwm cov txheej txheem hlau metallurgy feem ntau yog siv cov khoom siv graphite los ua cov nkoj ceramic rau nias thiab sintering.Cov siv lead ua kev loj hlob crucible, lub regional refining thawv, txhawb fixture, induction rhaub, thiab lwm yam ntawm monocrystalline silicon yog tag nrho cov txheej txheem los ntawm high-purity graphite.Tsis tas li ntawd, graphite kuj tseem siv tau los ua graphite rwb thaiv tsev board thiab lub hauv paus rau lub tshuab nqus tsev smelting, nrog rau cov khoom xws li kub-kub rauv rauv, pas nrig, daim hlau, thiab daim phiaj.

6. Rau atomic zog kev lag luam thiab kev lag luam tiv thaiv lub teb chaws: graphite muaj zoo neutron moderator siv nyob rau hauv atomic reactors, thiab uranium graphite reactor yog ib hom atomic reactor uas yog dav siv.Cov khoom siv deceleration siv nyob rau hauv atomic reactors rau lub hwj chim yuav tsum muaj siab melting point, stability, thiab corrosion kuj, thiab graphite tuaj yeem ua tau raws li cov kev xav tau saum toj no.Qhov kev xav tau purity rau graphite siv los ua atomic reactor yog siab heev, thiab cov ntsiab lus impurity yuav tsum tsis pub tshaj kaum ob ntawm PPMs.Tshwj xeeb, cov ntsiab lus boron yuav tsum tsawg dua 0.5PPM.Hauv kev lag luam tiv thaiv hauv tebchaws, graphite kuj tseem siv los tsim cov nozzles rau cov roj foob pob hluav taws, lub qhov ntswg cones rau cov cuaj luaj, cov khoom siv rau qhov chaw navigation, cov ntaub ntawv rwb thaiv tsev, thiab cov ntaub ntawv tiv thaiv hluav taws xob.

7. Graphite kuj tuaj yeem tiv thaiv boiler scaling.Cov kev ntsuam xyuas hauv chav ntsuas tau pom tias ntxiv qee qhov ntawm cov hmoov graphite (kwv yees li 4-5 grams ib tuj dej) rau dej tuaj yeem tiv thaiv qhov kub hnyiab ntawm qhov chaw.Tsis tas li ntawd, graphite txheej ntawm cov hlau chimneys, ru tsev, txuas hniav, thiab cov kav dej tuaj yeem tiv thaiv corrosion thiab xeb.

8. Graphite tuaj yeem siv ua xaum xaum, xim xim, thiab tus neeg saib xyuas polishing.Tom qab kev ua haujlwm tshwj xeeb, graphite tuaj yeem ua rau ntau yam khoom siv tshwj xeeb rau kev siv hauv cov tuam tsev muaj feem cuam tshuam.

9. Electrode: Graphite muaj qhov ua tau zoo thiab tsis muaj zog.Graphite electrodes tuaj yeem tsim tau rau smelting furnaces thiab hluav taws xob arc rauv hauv steel thiab silicon factories.