Qhov zoo ntawm carbon additives tuaj yeem ntsuas los ntawm ntau qhov ntsuas, thiab cov hauv qab no yog qee qhov tseem ceeb rau kev txiav txim siab:
1, Tsau cov ntsiab lus carbon
Txhais: Cov pa roj carbon monoxide yog qhov muaj txiaj ntsig zoo ntawm cov pa roj carbon monoxide, thiab nws cov nqi siab dua, cov pa roj carbon monoxide zoo dua. Cov ntsiab lus ruaj khov yog tau los ntawm kev suav cov dej noo, cov teeb meem tsis zoo, cov ntsiab lus tshauv, thiab cov ntsiab lus sulfur hauv cov qauv.
Txuj: Feem ntau hais lus, cov ntsiab lus ruaj khov ntawm cov pa roj carbon zoo yuav tsum siab dua 96%.
2, Ash cov ntsiab lus
Txhais: Tshauv yog cov seem seem tom qab combustion ntawm ib tug carbon enhancer ntawm qhov kub thiab txias, thiab qhov qis nws cov ntsiab lus, qhov zoo dua.
Kev cuam tshuam: Carbonizers nrog cov hmoov tshauv siab yog nquag tsim cov pa taws ntau thiab cov slag thaum lub sij hawm smelting, ua kom lub zog noj, txo cov pa roj carbon monoxide, thiab ua kom lub sijhawm ua haujlwm ntev, ua kom lub zog noj thiab ua haujlwm.
Txuj: Cov hmoov tshauv ntawm graphite carbonization tus neeg sawv cev yog qhov tsawg, txog {{0}}.5% mus rau 1.0%; Cov hmoov tshauv ntawm calcined anthracite yog qhov siab, thiab txawm tias cov khoom zoo yuav tsis qis dua 4% mus rau 5%.
3, Cov ntsiab lus sulfur
Kev cuam tshuam: Sulfur yog ib qho teeb meem uas cuam tshuam nrog spheroidization, thiab cov ntsiab lus ntawm cov sulfur yuav tsum tau tswj nruj me ntsis rau cov kua hlau nyoos uas siv los tsim cov hlau ductile. Rau grey cam khwb cia hlau, nruab nrab leej faj tuaj yeem stabilize pearlite, tab sis ntau leej faj yog teeb meem.
Standard: Cov ntsiab lus sulfur ntawm carburizer siv rau cov hlau ductile yuav tsum tsawg li tsawg tau, feem ntau yuav tsum tau S Less tshaj los yog sib npaug rau 0.015%; Cov ntsiab lus sulfur ntawm carburizer siv rau grey cam khwb cia hlau tuaj yeem siab dua me ntsis, tab sis nws kuj yuav tsum tau txiav txim siab raws li cov kev xav tau tshwj xeeb.
4, Tsis muaj teeb meem
Txhais: Volatile teeb meem yog cov roj thiab dej tso tawm los ntawm cov pa roj carbon enhancer thaum lub sij hawm cua sov txheej txheem, thiab nws cov ntsiab lus qis dua, qhov zoo dua.
Kev cuam tshuam: Cov teeb meem tsis zoo nkag mus rau hauv cov hlau molten yuav ua rau cov ntsiab lus roj hauv cov hlau molten, ua rau muaj kev pheej hmoo ntawm kev tsim cov porosity defects hauv castings.
Standard: Cov teeb meem tsis hloov pauv ntawm cov txheej txheem carbon additives yuav tsum qis dua 0.5%.
5, Granularity
Kev cuam tshuam: Qhov luaj li cas ntawm cov pa roj carbon additive yuav tsum raug xaiv raws li cov txheej txheem melting sib txawv, hom rauv, thiab qhov ntau thiab tsawg. Cov pa roj carbon zoo sib xws thiab nruab nrab tuaj yeem ua rau kom nqus tau cov pa roj carbon ntau.
Standard: Piv txwv li, particle loj rau induction furnaces nyob nruab nrab ntawm {{0}}.2 thiab 6mm; Qhov loj me ntawm cov hlau thiab lwm cov hlau dub yog nyob nruab nrab ntawm 1.4-9.5mm; High carbon steel yuav tsum tsis tshua muaj nitrogen thiab particle loj ntawm 0.5 thiab 5 hli.
6, Cov ntsiab lus dej
Kev cuam tshuam: Kev taw qhia dej rau hauv cov hlau yuav ua rau cov ntsiab lus hydrogen hauv cov hlau molten, uas muaj kev cuam tshuam tsis zoo rau qhov zoo ntawm cov castings.
Standard: Tag nrho cov noo noo Performance index ntawm carbon additive yuav tsum tsawg li tsawg tau. Cov dej noo ntawm cov pa roj carbon additive hauv cov hnab me me yuav tsum tsawg dua lossis sib npaug li 1%, thiab cov dej noo ntawm cov khoom siv coke ua ntej crushing thiab ntim yuav tsum tsawg dua los yog sib npaug li 3%.
7, Nitrogen cov ntsiab lus
Kev cuam tshuam: Lub luag haujlwm ntawm nitrogen cov ntsiab lus hauv grey cam khwb cia hlau muaj dual. Nroj tsuag nitrogen tuaj yeem ua kom ruaj khov pearlite, khoov flake graphite, passivate lub ntsis, thiab txhim kho cov khoom siv ntawm grey cam khwb cia hlau; Txawm li cas los xij, nitrogen ntau dhau tuaj yeem ua rau tawg zoo li nitrogen porosity tsis xws luag hauv castings.
Txheem: Grey cam khwb cia hlau yuav tsum tau kho nrog cov thee lossis roj av coke carbonization cov neeg ua haujlwm, thiab nws cov ntsiab lus nitrogen yuav tsum nyob ib ncig ntawm 1000ppm kom tau raws li qhov yuav tsum tau muaj ntawm cov khoom siv casting feem ntau. Txawm li cas los xij, hauv kev tsim cov hlau nplaum, nws yuav tsum xaiv graphite carburizer lossis graphitization carburizer nrog qis nitrogen cov ntsiab lus.
