Graphite pas nrig yog cov khoom tsis yog xim hlau uas yog ib qho tseem ceeb ntawm kev txiav cov khoom siv ua ntej vuam thaum lub sij hawm carbon arc gouging txheej txheem. Nws yog ua los ntawm carbon thiab graphite nrog txoj cai binder, extruded, ci ntawm 2200 degree thiab ces coated nrog ib txheej ntawm tooj liab. Nws yog resistant rau kub kub, muaj zoo heev hluav taws xob conductivity, thiab yog tsis yooj yim rau tawg. Nws yog tsim rau kev txiav hlau rau hauv cov duab uas yuav tsum tau ua.
Graphite pas nrig yog lub tshuab hluav taws xob uas feem ntau siv rau hauv lub tshuab nqus tsev kub kub, thiab nws qhov kub thiab txias tuaj yeem ncav cuag 3000 degree. Nws oxidizes me ntsis ntawm qhov kub thiab txias tsuas yog siv tau rau hauv nruab nrab lossis txo qhov chaw nrog lub tshuab nqus tsev. Nws thermal expansion coefficient yog me me, thermal conductivity yog siab, qhov resistivity yog (8-13)10-6m, kev ua haujlwm zoo dua SiC thiab MoSi2, kub tsis kam, huab cua txias, huab cua kub, tus nqi qis.
Graphite rods muab faib ua ntuj graphite rods thiab dag graphite rods. Nws yog crystalline carbon nrog ib tug metallic luster. Raws li cov ntsiab lus carbon, graphite rods muab faib ua high-carbon graphite rods, nruab nrab-carbon graphite rods, thiab tsawg-carbon graphite rods. Graphite rods yog dav siv hauv roj teeb electrodes, metallurgical refractory cov ntaub ntawv, tshuaj smoothing thiab sealing cov ntaub ntawv. Raws li kev ua haujlwm zoo rau cov txheej txheem, nws yog siv rau hauv cov khoom siv hluav taws xob, cov tshuaj tiv thaiv corrosion thiab cov txheej txheem conductive. Tsis tas li ntawd, raws li cov khoom siv los tiv thaiv corrosion, graphite pas nrig muaj qhov zoo dua los tiv thaiv corrosion tom qab koom nrog cov tshuaj pigments xws li zinc daj hauv cov mis.
Raws li cov nplaim retardant muab tub lim, nthuav graphite rods yog interlaminar compounds ntawm graphite rods uas yog tshuaj los yog electrochemically kho. Cov pas nrig graphite nthuav dav tau sai sai hauv cov cua sov, ua rau cov nplaim taws thiab tsim cov khoom nthuav dav uas tuaj yeem raug cais tawm, ncua sijhawm, lossis tsis tu ncua los ntawm cov nplaim taws. Tsis-flammable, tsis-mos, nrog zoo heev softness, nto zog thiab carbide txheej zog.
Tsis tas li ntawd, qhov ntim thiab tus naj npawb ntawm lub cev o yuav tsum raug xaiv kom raug. Kev sim tau pom tias 150 micron hais, 30% o tus nqi, thiab 5% koob tshuaj zoo heev. Yog li ntawd, graphite rods tuaj yeem siv ncaj qha los ua cov pa roj carbon conductive fillers, thiab tuaj yeem ua rau cov khoom sib xyaw ua ke rau cov txheej txheem conductive. Txawm li cas los xij, vim muaj ntau cov graphite rods thiab cov nplais, kev ua haujlwm ntawm cov txheej yuav ua nkig, uas txwv tsis pub siv cov txheej txheem rau qee yam. Txhawm rau txhawm rau txhim kho kev ua haujlwm ntawm cov graphite pas nrig, qhov sib ntxiv ntawm cov nplooj ntawv graphite tuaj yeem txo tau zoo.
Piv nrog impregnated graphite, graphite rods muaj cov yam ntxwv hauv qab no:
1. Cov txheej txheem ntau lawm yog yooj yim raws li, thiab cov ntaub ntawv zoo li no tuaj yeem siv los tsim cov khoom siv graphite nrog crushed graphite, uas txo tus nqi.
2. Tsawg porosity, cov qauv kev teeb tsa, zoo permeability.
3. Tom qab molding, cov duab zoo thiab ci, thiab tsis tas yuav tsum ua haujlwm tshwj tsis yog qhov kawg txuas.
4. Lub thermal conductivity yog qis dua li ntawm impregnated graphite, thiab linear expansion coefficient siab dua.
5. Zoo heev tshuaj stability, thermal conductivity, hluav taws xob conductivity, tshav kub tsis kam, thermal stability thiab siab mechanical zog.