Cov roj av coke uas muaj graphitized ua rau cov hlau zoo dua qub los ntawm kev ua kom cov qauv carbon zoo dua, tswj cov khoom sib xyaw kom zoo, txhim kho kev ua haujlwm ntawm cov hlau, thiab ua tau raws li qhov xav tau ntawm kev tsim khoom siab. Cov txheej txheem thiab cov teebmeem tshwj xeeb yog raws li nram no:
I. Kev Txhim Kho Cov Qauv Carbon: Kev Hloov Pauv Zoo Los Ntawm "Nplej Loj" Mus Rau "Rice Refined"
Cov khoom siv ntxiv carbon ib txwm muaj (xws li calcined coke) muaj cov pa roj carbon tsis sib xws, nrog rau tus nqi nqus tsuas yog 60%. Qhov sib txawv, graphitized roj av coke, raug kho kub siab ntawm 2800 ℃, tsim cov qauv graphite ib txwm muaj zoo li "stacked playing cards." Cov qauv no ua rau nws yaj sai hauv cov hlau molten, nrog rau tus nqi nqus nce mus txog ntau dua 90%. Piv txwv li, thaum smelting bearing steel (GCr15), cov pa roj carbon yuav tsum tau tswj hwm kom meej hauv qhov ntau ntawm 1.05% -1.15%. Kev siv cov khoom siv ntxiv carbon graphitized ua kom muaj tus nqi nqus ruaj khov ntawm 92%, nrog rau cov pa roj carbon hloov pauv tsis pub tshaj ± 0.02%, yog li tiv thaiv kev tawg brittle lossis tsis txaus hardness ntawm cov bearings los ntawm cov pa roj carbon hloov pauv.
II. Kev Tswj Xyuas Cov Khoom Siv Kom Tseeb: Kev Kho Kom Zoo "Diet Plan" Rau Cov Hlau Zoo Tshaj Plaws
- Cov Khoom Uas Tsis Muaj Peev Xwm Ntau: Cov txheej txheem graphitization hloov cov sulfur, nitrogen, thiab lwm yam khoom tsis muaj peev xwm mus ua cov pa roj uas ua rau volatilize, txo cov sulfur uas muaj peev xwm tsawg dua 0.05% thiab cov nitrogen uas muaj peev xwm tsawg dua 0.01%. Piv txwv li, cov hlau silicon uas tsis yog-oriented siv rau hauv cov tsev tsheb fais fab tshiab yuav tsum muaj cov pa roj carbon tsawg dua 0.005%, ua rau yuav tsum siv cov khoom ntxiv carbon uas muaj graphitized purity siab. Ib yam li ntawd, cov hlau nickel-based rau cov evaporators fais fab nuclear yuav tsum muaj cov pa nitrogen tsis pub tshaj 0.01%, uas yog qhov yuav tsum tau ua uas cov khoom ntxiv carbon ib txwm tsis tuaj yeem ua tau.
- Kev Tswj Xyuas Cov Khoom Siv Ruaj Khov: Los ntawm kev kho qhov ntau ntawm cov khoom noj thiab cov txheej txheem, cov ntsiab lus ntawm cov ntsiab lus xws li carbon, sulfur, thiab nitrogen hauv cov hlau yaj tuaj yeem tswj tau meej. Piv txwv li, hauv lub cub hluav taws xob yaj, graphitized roj av coke raug ntxiv nrog rau cov hlau seem thiab lwm yam khoom siv them kom tsis txhob muaj kev oxidation ntau dhau los ntawm kev pub ntau, kom ntseeg tau tias cov ntsiab lus carbon ntawm cov castings ua tau raws li cov qauv.
III. Kev Txhim Kho Kev Ua Haujlwm Zoo ntawm Metallurgical: Los ntawm "Kev zom zaub mov tsis zoo" mus rau "Kev Nqus Tau Zoo"
- Kev Nqus Tau Cov Pa roj Carbon Ntau Ntxiv: Tus nqi nqus tau cov pa roj carbon ntawm cov roj av graphitized yog siab dua 30% dua li cov pa roj carbon ntxiv, uas txhais tau tias rau txhua 10 jin ntawm cov pa roj carbon ntxiv, qhov kev nqus tau zoo tiag tiag nce ntxiv 3 jin. Qhov no txo cov pa roj carbon poob thaum lub sijhawm ua hlau thiab txo cov nqi tsim khoom.
- Txo Cov Pa Phem Uas Ua Rau Muaj Peev Xwm Phem: Cov yam ntxwv ntawm cov roj av graphitized uas muaj cov sulfur thiab nitrogen tsawg txo cov pa phem ntawm cov sulfur dioxide thiab nitrogen oxides thaum lub sijhawm smelting, ua raws li cov kev cai txuag hluav taws xob thiab txo cov pa phem. Piv txwv li, kev siv cov roj av graphitized tuaj yeem txo cov pa phem sulfur oxide hauv cov lag luam hlau ntau dua 50%.
IV. Ua kom tau raws li qhov xav tau ntawm kev tsim khoom siab: Kev dhia los ntawm "Lub zog hlau" mus rau "Lub zog hlau loj"
- Txhawb Kev Tsim Khoom Zoo Tshaj Plaws: Cov roj av coke uas muaj graphitized yog cov khoom siv tseem ceeb rau kev tsim cov hlau grey cast iron uas muaj zog heev, cov hlau silicon uas tsis yog silicon, cov hlau nickel-based alloys, thiab lwm yam khoom siv hlau zoo tshaj plaws. Piv txwv li, kev tsim cov khoom "hardcore" xws li cov flanges ntawm lub turbine turbine thiab cov kav dej fais fab nuclear vam khom nws cov yam ntxwv purity siab thiab cov yam ntxwv nqus dej siab.
- Tsav Kev Txhim Kho Kev Lag Luam: Thaum Tuam Tshoj txoj kev lag luam hlau hloov mus rau qhov kev txhim kho siab thiab ntsuab, "kev hloov pauv hauv tebchaws" ntawm graphitized petroleum coke tab tom nrawm dua. Nws daim ntawv thov tsis yog tsuas yog txhim kho qhov zoo ntawm cov khoom hlau xwb tab sis kuj txhawb kev nce qib hauv kev siv tshuab thoob plaws hauv kev lag luam. Piv txwv li, ib lub tuam txhab hlau tau txo qhov kev hloov pauv ntawm cov pa roj carbon ntawm cov hlau bearing los ntawm ± 0.05% mus rau ± 0.02% los ntawm kev siv graphitized petroleum coke, ua rau muaj kev nce ntxiv 15% ntawm tus nqi tsim nyog ntawm cov khoom.
V. Cov Kev Kawm Txog Cov Neeg Mob: Cov Teeb Meem "Hardcore" ntawm Graphitized Petroleum Coke
- Kev Tsim Khoom Hlau Bearing: Tom qab siv cov roj av graphitized coke, ib lub tuam txhab tau txo qhov kev hloov pauv ntawm cov pa roj carbon ntawm cov hlau bearing los ntawm ± 0.05% mus rau ± 0.02%, nce tus nqi tsim nyog ntawm cov khoom los ntawm 15%, thiab txuag tau ntau dua kaum lab yuan hauv kev poob txhua xyoo.
- Cov Tsev Rau Lub Tsheb Muaj Zog Tshiab: Los ntawm kev siv cov roj av coke uas muaj cov roj graphitized purity siab, cov pa roj carbon ntawm cov hlau silicon uas tsis yog oriented tau ruaj khov hauv qab 0.005%, txhim kho kev ua haujlwm ntawm lub cev muaj zog los ntawm 3% thiab ua kom muaj kev tsav tsheb ntau ntxiv los ntawm 5%.
- Cov Tshuab Ua Hluav Taws Xob Nuclear: Cov ntsiab lus nitrogen hauv cov hlau nickel-based alloys raug tswj kom qis dua 0.01%, tiv thaiv cov khoom tawg vim muaj cov ntsiab lus nitrogen ntau dhau thiab ua kom lub neej ua haujlwm ntawm cov khoom siv ntev dua 20 xyoo.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-30-2025