Yuav ua li cas xaiv tus neeg sawv cev rau txoj cai nodulating
Ib qho quav ntxiv siv los txhawb cov crystallization ntawm graphite rau hauv spheres hauv hlau sib xyaw. Daim ntawv thov dav dav, cam khwb cia hlau nrum. Txawm li cas los xij, muaj ntau yam thiab cov ntsiab lus ntawm cov neeg sawv cev hauv lub lag luam kev ua lag luam. Yog li no, nws tseem ceeb heev los xaiv tus neeg sawv cev txoj cai nodulating.
Raws li cov tshuaj tiv thaiv thermodynamics thiab cov tshuaj tiv thaiv kinetics ntawm cov ntsiab lus spheroidized hauv molten hlau, yam tseem ceeb cuam tshuam rau qhov zoo ntawm tus neeg ua haujlwm spheroidizing nyob rau hauv cov txheej txheem ntau lawm thiab cov ntsiab lus cuam tshuam rau kev siv cov txheej txheem txua, cov qauv rau kev txiav txim siab qhov zoo ntawm tus neeg sawv cev spheroidizing. yog muab tso rau pem hauv ntej raws li nram no:
(1) kev sib raug zoo ntawm spheroidized cov ntsiab lus nrog cov leej faj, oxygen thiab lwm yam hauv molten hlau. Nws muaj kev sib raug zoo, thiab tsim cov sib txuas nrog nws, raws li cov tub ntxhais txawv teb chaws hauv cov txheej txheem solidification txheej ntawm hlau tsis muaj hlau, xws li lub ntiaj teb tsis tshua muaj, magnesium, calcium thiab lwm cov ntsiab lus spheroidized.
(2) lub peev xwm ntawm spheroidizing cov ntsiab lus los hloov morphology ntawm graphite los ntawm flake mus rau spheroid.
(3) qhov ntom ntom ntom thiab kub taw tes ntawm tus kheej kheej qis dua qis dua li ntawm cov kua hlau. Kev ntom ntom ntom nti tuaj yeem cia li ntab rau hlau tsis muaj hlau, cov taw tes kub yog qis dua qhov ntsuas kub ntawm hlau kho kev kho mob, magnesium tuaj yeem hloov mus rau hauv lub xeev gaseous ntawm qhov ntsuas kub ntawm kev kho, muaj qhov kev coj tus kheej, thiaj li ua kom cov nyhuv ntawm spheroidization.
(4) cov ntsiab lus ntawm magnesium oxide hauv spheroidizer yog sib npaug li 10% ntawm cov ntsiab lus ntawm magnesium.
(5) nodulating tus neeg sawv cev ntom, tsis muaj kev sib cais, tsis muaj shrinkage porosity, tsis muaj pulverization.
(6) cov particle loj faib ntawm spheroidizer yog qhov tsis haum, tsis muaj hmoov txhuam alloy, obtuse Lub kaum ntsees deformation ntau dua yog qhov zoo dua.
(7) Cov xwm txheej saum toj no tsuas yog hais txog qhov ua tau zoo hauv kev tsim thiab siv tus neeg sawv cev nodulating, yog li nws tuaj yeem siv los ua tus qauv kev koom ua ke rau kev txiav txim siab zoo los ntawm ob tog.
Raws li hom kev sib ntxiv uas tau siv dav hauv kev lag luam cam khwb cia hlau, qhov zoo thiab ua haujlwm ntawm spheroidizer yog qhov tseem ceeb heev. Yog li, ntawm kev xaiv cov khoom lag luam zoo, lub spheroidizer ntxiv thiab siv raws li cov lus qhia kom ua tiav cov txiaj ntsig zoo tshaj plaws.
