Hav nyob ntawd! Raws li tus neeg muag khoom ntawm Graphite Components, Kuv tau pom ua ntej ntawm qhov zoo tshaj plaws cov kev xav tsis thoob no coj mus rau lub rooj. Hauv blog no, kuv yuav rhuav tshem vim li cas graphite Cheebtsam yog kev ua si - hloov pauv hauv ntau qhov kev lag luam.
Siab - Kub Resistance
Ib qho txiaj ntsig tseem ceeb tshaj plaws ntawm cov khoom siv graphite yog lawv qhov ua tau zoo siab - kub tsis kam. Graphite tuaj yeem tiv taus qhov kub siab heev yam tsis muaj melting lossis deforming yooj yim. Nyob rau hauv industrial furnaces, piv txwv li, graphite Cheebtsam yog siv los ua cua sov ntsiab los yog crucibles. Cov khoom no tuaj yeem ua haujlwm ntawm qhov kub txog li 3000℃hauv ib qho inert lossis txo qhov cua. Qhov no yog txoj kev tshaj li qhov muaj peev xwm ntawm feem ntau cov hlau thiab alloys.
Thaum koj tab tom cuam tshuam nrog cov txheej txheem xws li smelting hlau los yog kev tsim khoom siab - ceramics, muaj cov khoom siv uas tuaj yeem ua rau cov cua sov hnyav yog qhov tseem ceeb heev. Graphite lub peev xwm los tswj nws cov qauv kev ntseeg siab ntawm qhov kub thiab txias txhais tau tias tsis tshua muaj sijhawm rau kev hloov khoom siv thiab kev tsim khoom zoo ib yam. Koj tuaj yeem tshawb xyuas peb cov Graphite Cheebtsam rau siab - daim ntawv thov kub ntawm peb lub vev xaib.
Tshuaj Inertness
Graphite yog tshuaj inert rau ntau yam tshuaj. Nws tsis hnov mob yooj yim nrog cov kua qaub, alkalis, thiab ntau cov kuab tshuaj organic. Cov cuab yeej no ua rau nws yog qhov kev xaiv zoo tshaj plaws rau kev siv hauv kev lag luam chemical. Piv txwv li, nyob rau hauv cov tshuaj reactors, graphite linings los yog Cheebtsam yuav siv tau kom muaj corrosive tshuaj. Lawv yuav tsis yaj lossis corrode nyob rau lub sijhawm, uas ua rau lub sijhawm ntev - ruaj khov ntawm cov cuab yeej thiab txo qhov kev pheej hmoo ntawm cov tshuaj lom neeg.
Hauv kev lag luam semiconductor, qhov twg ultra - cov tshuaj ntshiab yog siv rau kev ua wafer, cov khoom siv graphite xws li Graphite Chuck yog ua haujlwm. Cov tshuaj inertness ntawm graphite pab tswj cov purity ntawm cov tshuaj thiab tiv thaiv kom txhob muaj kab mob ntawm cov semiconductor wafers, uas yog ib qho tseem ceeb rau ua high - chips zoo.
Hluav taws xob conductivity
Graphite yog cov khoom siv hluav taws xob zoo. Cov cuab yeej no ua rau nws muaj txiaj ntsig zoo hauv kev siv hluav taws xob thiab hluav taws xob. Hauv cov roj teeb, piv txwv li, graphite feem ntau yog siv los ua cov khoom siv electrode. Lithium - ion roj teeb, uas siv hluav taws xob feem ntau ntawm peb cov smartphones, laptops, thiab hluav taws xob tsheb, feem ntau siv graphite anodes. Cov hluav taws xob conductivity ntawm graphite tso cai rau kom muaj txiaj ntsig zoo thiab cov txheej txheem tawm, uas txhais tau hais tias cov roj teeb ua tau zoo dua thiab lub roj teeb ntev dua.
Hauv cov tshuab hluav taws xob thiab cov tshuab hluav taws xob, graphite txhuam yog siv los hloov hluav taws xob tam sim no ntawm qhov chaw nres tsheb thiab tig. Qhov zoo hluav taws xob conductivity ntawm graphite ua kom muaj kev ua haujlwm zoo thiab txo cov hluav taws xob poob, kev txhim kho tag nrho cov khoom siv hluav taws xob.
Tus kheej - Lubricating Property
Graphite muaj lub ntuj tsim nws tus kheej - lubricating khoom. Nws cov txheej txheem txheej tso cai rau cov khaubncaws sab nraud povtseg rau ib leeg yooj yim, txo kev sib txhuam. Qhov no ua rau cov khoom siv graphite zoo tagnrho rau cov ntawv thov uas lubrication nyuaj lossis qhov twg cov roj lubricants yuav tsis haum.
Hauv cov tshuab nrog cov khoom txav, xws li cov kabmob thiab cov ntsaws ruaj ruaj, cov khoom siv graphite tuaj yeem siv los txo qhov hnav thiab tsim kua muag. Tus kheej - lubricating cov cuab yeej ntawm graphite txhais tau hais tias yuav tsum muaj lubrication sab nraud, uas tuaj yeem txuag nqi thiab txo qhov kev pheej hmoo ntawm cov roj nplua nyeem. Hauv siab - daim ntawv thov ceev, qhov txo qis kev sib txhuam muab los ntawm graphite kuj tuaj yeem pab txhim kho kev ua haujlwm ntawm cov tshuab.
Machineability
Graphite yog ib qho yooj yim rau tshuab piv rau ntau lwm yam ntaub ntawv. Nws tuaj yeem txiav, drilled, thiab zoo li tus geometries nyuaj nrog cov txheeb ze yooj yim. Qhov no ua rau nws muaj peev xwm tsim tau kev cai - tsim cov graphite cov khoom kom tau raws li cov kev thov tshwj xeeb.
Txawm hais tias koj xav tau ib qho yooj yim graphite pas nrig los yog ib qho nyuaj heev Graphite Bipolar Plate rau roj cell, lub machinability ntawm graphite tso cai rau sai thiab nqi - zoo ntau lawm. Qhov no yog qhov zoo tshaj plaws rau kev lag luam uas xav tau kev cai - ua ntu hauv lub sijhawm luv luv.
Lub teeb
Piv nrog rau ntau cov hlau, graphite yog lub teeb yuag. Cov cuab yeej no tseem ceeb tshwj xeeb hauv kev lag luam uas txo qhov hnyav yog qhov tseem ceeb, xws li aerospace thiab automotive industries. Hauv kev siv aerospace, kev siv cov khoom siv graphite tuaj yeem pab txo qhov hnyav tag nrho ntawm lub dav hlau, uas ua rau txo qis roj noj thiab ua kom lub dav hlau nce.
Hauv kev lag luam automotive, lub teeb graphite Cheebtsam tuaj yeem siv rau hauv cov cav thiab lwm yam los txhim kho roj kev lag luam thiab kev ua haujlwm. Kev sib xyaw ua ke ntawm lub teeb yuag thiab lub zog siab ua rau graphite ib qho kev ntxim nyiam rau cov khoom siv tsoos.
Thermal conductivity
Graphite muaj thermal conductivity zoo heev. Nws tuaj yeem hloov cov cua sov sai sai thiab ua haujlwm tau zoo, uas yog qhov tseem ceeb hauv cov ntawv thov uas qhov kub dissipation tseem ceeb. Hauv cov khoom siv hluav taws xob, piv txwv li, graphite heat sinks yog siv los dissipate tshav kub generated los ntawm kev sib txuas circuits thiab lwm yam khoom. Los ntawm kev hloov cov cua sov sai sai ntawm qhov cua sov - tsim cov khoom, graphite cua sov dab dej tuaj yeem tiv thaiv overheating thiab ua kom ntseeg tau tias kev ua haujlwm ntawm cov khoom siv hluav taws xob.
Hauv cov txheej txheem kev lag luam, cov khoom siv graphite kuj tuaj yeem siv los tswj qhov kub thiab txias. Piv txwv li, nyob rau hauv lub tshav kub exchangers, graphite tubes los yog daim hlau yuav siv tau los hloov tshav kub ntawm cov kua sib txawv, kev txhim kho cov efficiency ntawm lub tshav kub - pauv txheej txheem.
Tsawg Coefficient ntawm Thermal Expansion
Graphite muaj cov coefficient tsawg ntawm thermal expansion. Qhov no txhais tau hais tias nws nthuav thiab cog lus tsawg heev thaum raug kev hloov pauv hauv qhov kub thiab txias. Hauv cov ntawv thov uas qhov kev ruaj ntseg yog qhov tseem ceeb, xws li hauv cov cuab yeej precision thiab pwm, cov khoom siv graphite yog qhov kev xaiv zoo.
Piv txwv li, hauv kev tsim khoom semiconductor, qhov kev hloov me ntsis ntawm qhov ntev tuaj yeem cuam tshuam qhov zoo ntawm cov chips, graphite pwm nrog qis coefficient ntawm thermal expansion yog siv los xyuas kom meej thiab zoo ib yam.
Tus nqi - Ua tau zoo
Thaum xav txog tag nrho cov txiaj ntsig tau hais los saum toj no, cov khoom siv graphite yog tus nqi tiag tiag - siv tau rau lub sijhawm ntev. Txawm hais tias tus nqi pib ntawm graphite Cheebtsam yuav siab dua li ntawm qee yam khoom siv, lawv lub neej ua haujlwm ntev, kev saib xyuas tsis zoo, thiab kev ua haujlwm siab tuaj yeem ua rau cov nqi txuag nyiaj ntau dhau sijhawm.
Piv txwv li, nyob rau hauv industrial furnaces, siv graphite cua sov ntsiab yuav raug nqi ntau dua, tab sis lawv lub sij hawm ntev - durability thiab siab - kub kev ua tau zoo txhais tau hais tias koj yuav tsis tau hloov lawv ntau npaum li lwm yam cua sov ntsiab, txuag koj nyiaj ntawm kev hloov thiab downtime nqi.
Hauv kev xaus, qhov zoo ntawm graphite Cheebtsam yog ntau thiab deb - ncav cuag. Txawm hais tias koj nyob hauv tshuaj lom neeg, hluav taws xob, aerospace, lossis kev lag luam tsheb, cov khoom siv graphite tuaj yeem muab kev daws teeb meem rau ntau yam ntawm koj cov kev sib tw engineering. Yog tias koj xav paub ntau ntxiv txog peb cov khoom siv graphite lossis tab tom nrhiav qhov chaw txiav txim, thov koj xav tiv tauj peb rau kev sib tham txog kev yuav khoom. Peb nyob ntawm no los pab koj nrhiav cov kev daws teeb meem graphite zoo tshaj plaws rau koj cov kev xav tau tshwj xeeb.
Cov ntaub ntawv
ASM Handbook Committee. ASM Phau Ntawv Qhia, Volume 1: Cov Khoom thiab Kev Xaiv: Hlau, Hlau, thiab Siab - Kev Ua Tau Zoo Alloys. ASM International, 1990.
Reed, John S. Cov Ntsiab Cai ntawm Ceramics Processing. Wiley, 1995.
Linden, David, thiab Thomas B. Reddy, eds. Phau ntawv ntawm cov roj teeb. McGraw - Hill, 2002.