Graphitized Petroleum Coke: Tus "Vaj Ntxwv" Ntawm Cov Neeg Sawv Cev Carburizing

Cov roj av coke uas muaj graphitized yog suav tias yog "huab tais" ntawm cov neeg sawv cev carburizing vim nws qhov purity siab, crystallinity siab, qhov nqus tau zoo heev, thiab kev ruaj khov, qhia txog tus nqi tsis muaj qhov hloov pauv tau hauv ntau qhov chaw xws li metallurgy, kev tsim khoom graphite, thiab kev lag luam tub rog. Cov kev tshuaj xyuas hauv qab no yog ua los ntawm peb qhov ntev: cov yam ntxwv tseem ceeb, cov txiaj ntsig ntawm cov txheej txheem, thiab cov xwm txheej siv.

I. Cov Yam Ntxwv Tseem Ceeb: Cov "Royal Genes" ntawm Graphitized Petroleum Coke

Kev Ntshiab Siab thiab Kev Tsis Huv Si

Cov roj av coke uas muaj graphitized raug kho kom sov siab ntawm 2200 - 2600 ℃, uas tshem tawm feem ntau cov khoom tsis huv xws li sulfur, nitrogen, thiab tshauv. Nws cov pa roj carbon ruaj khov yog siab txog 80% - 92%, nrog rau cov sulfur tsawg txog ≤0.1% thiab cov nitrogen ≤0.5%. Cov yam ntxwv ntshiab siab no ua kom ntseeg tau tias nws tsis ua rau muaj cov khoom phom sij thaum lub sijhawm carburizing, ua rau cov hlau zoo dua. Piv txwv li, hauv kev ua hlau, cov sulfur tsawg tuaj yeem txo qhov "kub brittleness" thiab txhim kho kev ua haujlwm thiab kev cuam tshuam ntawm cov hlau.

Crystallinity siab thiab ruaj khov

Cov txheej txheem graphitization npaj cov pa roj carbon atoms rau hauv cov qauv graphite ib txwm muaj, tsim cov qauv crystallinity siab. Cov qauv no ruaj khov dua ntawm qhov kub siab thiab tsis tshua muaj kev oxidation thiab kev puas tsuaj, ua kom ntseeg tau tias muaj cov nyhuv ntev ntawm carburization. Qhov sib piv, cov roj av coke uas tsis muaj graphitized feem ntau yuav lwj thaum kub siab, ua rau tus nqi nqus carbon tsawg dua.

Cov qauv porous thiab High Reactivity

Cov roj av coke uas muaj graphitized muaj cov qauv porous nrog thaj chaw loj, ua rau nws tuaj yeem sib cuag thiab lwj sai sai hauv cov hlau lossis hlau yaj los ua cov nuclei, txhim kho qhov nrawm ntawm kev nqus cov pa roj carbon. Cov ntaub ntawv sim qhia tau tias nws cov nyhuv nqus yog sib npaug rau cov neeg sawv cev carburizing uas muaj cov pa roj carbon ntau dua 90%, tab sis nws muaj qhov ceev ntawm kev teb sai dua, uas tuaj yeem luv lub sijhawm smelting los ntawm 10% - 15%, ua tiav kev txuag hluav taws xob thiab txo kev siv.

II. Cov txiaj ntsig ntawm cov txheej txheem: Tig pob zeb mus ua kub los ntawm kev kho graphitization

Kev Txhim Kho Kev Npaj Molecular

Kev kho graphitization ua rau qhov sib nrug ntawm cov pa roj carbon atoms dav dua, tsim cov qauv siv lead ua hexagonal uas zoo dua rau kev lwj. Cov qauv no tuaj yeem tso tawm cov pa roj carbon atoms sai sai hauv cov hlau yaj, txhawb kev tsim graphite thiab txhim kho cov qauv graphite ntawm cov hlau cam khwb cia (xws li nce tus lej ntawm graphite spheroidal), yog li txhim kho cov khoom siv kho tshuab thiab kev siv tshuab ntawm cov castings.

Kev Sib Npaug ntawm Tus Nqi thiab Kev Ua Haujlwm Zoo

Txawm hais tias kev kho graphitization yuav tsum tau siv zog kub siab, nws qhov kev nqus dej siab thiab kev ruaj khov tuaj yeem txo qhov ntau ntawm cov neeg sawv cev carburizing siv (feem ntau tsawg dua 20% - 30% piv rau cov neeg sawv cev carburizing uas siv thee) thiab txo qhov kev poob ntawm lub sijhawm tsim khoom los ntawm kev hloov kho ntau zaus ntawm cov khoom sib xyaw. Thaum kawg, tus nqi tag nrho qis dua, thiab nws tuaj yeem txhim kho qhov zoo ntawm cov khoom.

III. Cov Xwm Txheej Thov: Ib tug "Tus Neeg Ua Si Txhua Yam" los ntawm Metallurgy mus rau High Technology

Kev Lag Luam Hlau: Kev Lav Ob Zaug rau Kev Ua Kom Carburization thiab Kev Txhim Kho Zoo

• Kev ua hlau: Los ntawm kev nce cov hlau seem thiab txo kev siv hlau npua, ua ke nrog kev siv carburization siv graphitized petroleum coke, tus nqi ntawm kev castings tuaj yeem txo tau 10% - 20%, thaum txhim kho qhov huv thiab cov khoom siv kho tshuab ntawm hlau.
• Kev Txhaj Tshuaj: Nws ua kom cov graphite morphology thiab qib nodularity zoo dua, ua kom lub neej ua haujlwm ntawm cov castings ntev dua. Piv txwv li, hauv kev txhaj tshuaj ntawm lub cav tsheb lub tog raj kheej, kev siv cov roj av graphitized tuaj yeem ua rau cov castings tsis kam qaug zog ntau dua 15% - 20%.

Kev Tsim Khoom Graphite: Lub Pob Zeb Tseem Ceeb ntawm Cov Khoom Siv Zoo Tshaj Plaws

Cov roj av coke graphitized yog cov khoom siv tseem ceeb rau kev tsim cov cathode blocks loj, carbon electrodes, graphitized electrodes, thiab cov electrode pastes ua haujlwm siab. Nws qhov kev ntshiab siab thiab crystallinity siab tuaj yeem ua tau raws li qhov xav tau ntawm cov cub tawg kev lag luam uas tab tom loj hlob mus rau qhov loj thiab loj heev, txo cov kev poob oxidation ntawm qhov kub siab thiab ntev lub neej ua haujlwm ntawm cov khoom siv.

Kev Lag Luam Tub Rog: Ib Tus Neeg Ua Si Muaj Peev Xwm Hauv Cov Khoom Siv Tiv Thaiv Tau

Pob zeb diamond dub (ib lub pob zeb diamond polycrystalline ntuj) yog suav hais tias yog cov khoom siv ceramic yav tom ntej rau kev thaiv cov cuab yeej ua rog vim nws qhov nyuaj siab (qhov thib ob tsuas yog pob zeb diamond thiab boron nitride) thiab qhov ceev qis (2.52 g / cm³). Graphitized petroleum coke, los ntawm kev ua tiav tob, tuaj yeem hloov pauv pob zeb diamond dub hauv kev tsim cov stabilizers rau cov ntaub ntawv tub rog pyrotechnic, txo kev vam khom rau cov peev txheej tsawg.

Lwm Cov Chaw Lag Luam: Ib qho "Cov Khoom Siv Pabcuam Thoob Ntiaj Teb" rau Cov Ntawv Thov hla ciam teb

• Kev Lag Luam Tshuaj: Nws ua haujlwm ua tus neeg sawv cev txo qis, casting txo cov tshuaj tiv thaiv, thiab cov khoom siv refractory.
• Kev Lag Luam Hluav Taws Xob: Nws yog siv los tsim cov txhuam carbon, txhim kho kev coj ua thiab kev hnav tsis kam.
• Kev Lag Luam Roj Teeb: Nws yog siv rau hauv cov ntaub ntawv electrode los txhim kho lub zog ceev thiab lub neej voj voog.
• Kev Lag Luam Tshuab: Nws ua haujlwm ua lub roj nplua nyeem kom txo qhov kev sib txhuam.

Xaus Lus: Txoj Kev "Royal Path" ntawm Graphitized Petroleum Coke

Cov roj av coke graphitized tau teeb tsa tus qauv hauv kev ua cov neeg sawv cev carburizing nrog nws cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb. Nws tsis tsuas yog daws cov teeb meem ntawm cov khoom tsis huv siab thiab qhov nqus tsawg ntawm cov neeg sawv cev carburizing ib txwm muaj tab sis kuj txhawb kev txhim kho cov khoom siv hauv metallurgy, kev tsim khoom graphite, thiab kev lag luam tub rog los ntawm nws cov crystallinity siab thiab kev ruaj khov. Nrog rau kev thov kom txuag hluav taws xob, txo cov pa phem, thiab kev tsim khoom siab, "qhov xwm txheej huab tais" ntawm graphitized roj av coke yuav raug sib sau ua ke ntxiv, ua rau nws yog "pob zeb diamond dub" tseem ceeb hauv kev txhim kho kev lag luam.