Hav nyob ntawd! Raws li tus neeg muag khoom ntawm Graphite Npib Moulds, Kuv tau nug ntau zaus txog qhov tawg ntawm cov pwm no. Yog li, kuv xav tias kuv yuav siv sij hawm los rhuav tshem rau koj.
Ua ntej tshaj, cia peb tham txog dab tsi tawg toughness tiag tiag txhais tau tias. Fracture toughness yog cov khoom muaj peev xwm tiv thaiv kev nthuav tawm ntawm cov kab nrib pleb. Hauv cov ntsiab lus yooj yim, nws yog qhov zoo npaum li cas cov khoom tuaj yeem daws kev ntxhov siab thiab tiv thaiv cov kab nrib pleb kom loj dua thiab ua rau nws tawg. Thaum nws los txog rau Graphite Npib Moulds, tawg toughness yog qhov tseem ceeb heev vim tias cov pwm no tau siv nyob rau hauv siab - ib puag ncig kev ntxhov siab, zoo li npib minting.
Graphite muaj qee yam khoom tshwj xeeb uas ua rau nws xaiv zoo rau npib pwm. Nws muaj cov thermal conductivity zoo, uas txhais tau hais tias nws tuaj yeem tswj tau cov cua sov tsim thaum lub npib - ua txheej txheem. Nws kuj tseem yog mos thiab yooj yim rau tshuab, yog li peb tuaj yeem tsim cov qauv tsim kom ntxaws thiab raug. Tab sis li cas txog nws tawg toughness?
Lub pob txha toughness ntawm graphite nyob ntawm ob peb yam. Ib qho ntawm cov ntsiab lus tseem ceeb yog hom graphite siv. Muaj ntau qib sib txawv ntawm graphite, thiab txhua qib muaj cov khoom sib txawv. Piv txwv li, qee qhov qib siab - purity graphite qib muaj qhov zoo ntawm pob txha tawv dua li lwm tus. Cov qib siab - purity no feem ntau yog ua los ntawm cov txheej txheem tsim tshwj xeeb uas ua rau muaj cov qauv zoo dua qub, uas ua rau cov khoom muaj peev xwm tiv thaiv kev tawg.
Lwm qhov tseem ceeb uas cuam tshuam rau cov pob txha toughness ntawm graphite npib pwm yog cov txheej txheem tsim khoom. Yog tias cov pwm tsis ua kom zoo, nws tuaj yeem muaj qhov tsis xws luag sab hauv lossis kev ntxhov siab uas tuaj yeem txo nws cov pob txha toughness. Ntawm peb lub tuam txhab, peb siv lub xeev - ntawm - - cov txuj ci tsim khoom los xyuas kom meej tias peb cov graphite npib pwm muaj qhov zoo tshaj plaws ua tau tawg toughness. Peb pib nrog siab - zoo graphite raw cov ntaub ntawv thiab ua tib zoo tshuab thiab kho cov pwm kom tshem tawm tej yam tsis muaj zog cov ntsiab lus.
Cov kev khiav hauj lwm tej yam kev mob kuj ua lub luag hauj lwm nyob rau hauv lub puas toughness ntawm graphite npib pwm. Thaum lub sijhawm npib - minting txheej txheem, cov pwm yog raug rau siab thiab kub. Cov xwm txheej no tuaj yeem ua rau cov graphite nthuav dav thiab cog lus, uas tuaj yeem tsim kev ntxhov siab ntawm cov pwm. Nyob rau tib lub sijhawm, qhov kev ntxhov siab no tuaj yeem ua rau tawg pib thiab loj hlob. Txawm li cas los xij, yog tias cov pwm muaj kev puas tsuaj zoo, nws tuaj yeem tiv taus cov kev ntxhov siab no yam tsis muaj kev tawg.
Txhawm rau kuaj cov pob txha toughness ntawm peb cov graphite npib pwm, peb siv ntau txoj hauv kev. Ib txoj hauv kev yog ib qho - edge notched beam (SENB) test. Nyob rau hauv qhov kev xeem no, ib tug me me notch yog ua nyob rau hauv pwm, thiab ces ib tug load yog thov mus rau lub thais kom txog thaum lub tawg pib loj hlob. Los ntawm kev ntsuas qhov load thiab kev loj hlob tawg, peb tuaj yeem xam qhov tawg toughness ntawm cov khoom. Peb kuj siv tsis yog - txoj kev kuaj kev puas tsuaj, xws li kev kuaj ultrasonic, txhawm rau txheeb xyuas qhov tsis xws luag hauv pwm ua ntej nws siv.
Tam sim no, cia kuv qhia koj txog qee qhov txiaj ntsig ntawm kev muaj graphite npib pwm nrog zoo tawg toughness. Ua ntej tshaj plaws, nws txhais tau tias cov pwm yuav kav ntev dua. Cov pwm uas muaj cov pob txha tawg siab tsis tshua muaj kev tawg lossis tawg thaum lub npib - minting txheej txheem, uas txhais tau tias koj yuav tsis tas yuav hloov nws ntau zaus. Qhov no tuaj yeem txuag koj nyiaj ntau hauv lub sijhawm ntev.
Thib ob, cov pwm uas muaj cov pob txha zoo tuaj yeem tsim tau ntau dua - npib zoo. Thaum cov pwm tsis zoo thiab tsis muaj kab nrib pleb, nws tuaj yeem tswj tau nws cov duab thiab qhov ntev dua. Qhov no ua rau cov nyiaj npib uas muaj cov ntsiab lus zoo dua thiab muaj qhov zoo sib xws.
Yog tias koj nyob hauv kev ua lag luam rau graphite npib pwm, koj kuj yuav xav tau qee yam ntawm peb cov khoom siv graphite. Peb muab Ntshiab Graphite Ingot Pwm, uas yog qhov zoo rau kev siv hlau smelting. Cov ingot pwm no yog tsim los ntawm siab - zoo graphite thiab muaj thermal conductivity zoo heev thiab txhua yam khoom.
Peb kuj muaj Graphite Moulds rau Nruam Casting. Cov pwm no yog tsim los rau cov txheej txheem nruam nruam thiab tuaj yeem ua haujlwm siab - ntim ntau lawm. Lawv muaj qhov hnav tsis zoo thiab tawg tawv tawv, uas ua rau lawv zoo tagnrho rau kev siv sijhawm ntev -.
Thiab yog tias koj xav tau Graphite Tube, peb tau txais koj them. Peb cov graphite raj yog siv rau ntau yam kev siv, nrog rau cov hlau smelting thiab chemical ua. Lawv tau tsim los rau cov lus qhia meej thiab muaj cov thermal thiab mechanical zog zoo heev.
Nyob rau hauv xaus, lub pob txha toughness ntawm ib tug graphite npib pwm yog ib qho tseem ceeb yuav tau xav txog thaum xaiv ib tug pwm rau koj npib - minting lag luam. Ntawm peb lub tuam txhab, peb txaus siab rau kev tsim cov khoom siab - zoo graphite npib pwm nrog zoo heev tawg toughness. Peb siv cov ntaub ntawv zoo tshaj plaws thiab cov txheej txheem tsim khoom los xyuas kom meej tias peb cov pwm tuaj yeem tiv taus qhov nruj ntawm cov npib - txheej txheem minting.
Yog tias koj xav paub ntau ntxiv txog peb cov graphite npib pwm lossis ib qho ntawm peb cov khoom siv graphite, tsis txhob yig tiv tauj. Peb nyob ntawm no los teb cov lus nug uas koj muaj thiab pab koj nrhiav cov khoom tsim nyog rau koj cov kev xav tau. Txawm hais tias koj yog ib tug me me - npib npib txiag los yog loj - nplai kev lag luam, peb tuaj yeem muab cov kev daws teeb meem rau koj. Yog li, xa peb ib kab thiab cia peb pib sib tham txog yuav ua li cas peb tuaj yeem ua haujlwm ua ke.
Cov ntaub ntawv
Graphite: Properties and Applications, AB Smith, 2018
"Fracture Mechanics of Engineering Materials", CD Johnson, 2020
"Kev tsim cov txheej txheem rau Graphite khoom", EF Williams, 2019