Inoculation ntawm Cast Iron
FeSi70 yog ntxiv rau molten hlau ua ntej pouring raws li ib tug inoculant los txhawb graphite nucleation thiab refine graphite morphology. Silicon hauv FeSi70 muab cov chaw nucleation rau graphite, txhawb kev tsim cov flake graphite hauv grey hlau lossis kheej kheej graphite hauv cov hlau hlau. Qhov no txo qis qhov tob tob, tiv thaiv kev tsim cov teeb meem carbides, thiab txhim kho machinability thiab tensile lub zog. Rau cov khoom hnyav-cov khoom siv xws li nres discs, lub tog raj kheej liners, thiab cov iav loj loj, qhov tshwm sim yog txhim kho toughness thiab tiv taus thermal qaug zog.
Alloying rau Solid Solution Strengthening
Silicon yog ib qho muaj zog ferrite stabilizer thiab ntxiv dag zog rau cov hlau matrix los ntawm cov khoom siv ntxiv dag zog. Nyob rau hauv hnyav- cov dej num castings raug rau cov khoom hnyav lossis cov khoom siv abrasive, silicon nce hardness thaum khaws cov ductility txaus, thiab FeSi70 tso cai rau cov silicon hloov kho yam tsis muaj cov ntsiab lus carbon ntau dhau. Qhov no txhim kho cov load-cov kabmob muaj peev xwm thiab kev puas tsuaj nyob rau hauv zeb yob, crusher puab tsaig, thiab hydraulic twj tso kua mis casings.
Tswj ntawm Eutectic Cell suav
Kev tsim kho kom zoo nrog FeSi70 nce tus naj npawb ntawm cov hlwb eutectic, ua rau muaj qhov zoo ntawm microstructure thoob plaws hauv seem casting. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog nyob rau hauv hnyav-section castings qhov twg qeeb cua txias tuaj yeem ua rau cov graphite ntxhib thiab txo cov khoom, thiab nws txo qis cov khoom sib txawv ntawm qhov casting nto thiab qhov chaw rau cov mining loj thiab cov khoom siv tshuab.
Kev Tiv Thaiv Dawb Hlau Tsim
Nyob rau hauv tuab -walled hnyav- lub luag haujlwm castings, qeeb cua txias tuaj yeem ua rau cov hlau dawb hauv cov nplua nuj carbides, uas nyuaj rau tshuab thiab ua rau tawg. FeSi70 inoculation txo qis cov pa roj carbon sib npaug hauv zos, txo qis kev tsim cov carbide thiab txhawb nqa graphite nag lossis daus, txo qis qhov tsis xws luag thiab machining teeb meem hauv cov cav loj loj thiab cov xovxwm hnyav.
Fluidity Txhim Kho thiab Pearlite Stabilization
Silicon txo qis cov ntsiab lus melting me ntsis thiab txhim kho fluidity, tso cai rau cov hlau molten los ua cov pwm kab noj hniav thiab cov ntu nyias yam tsis muaj qhov txias txias los yog misruns, kom ntseeg tau lub suab nrov rau cov twj tso kua mis, lub cev valve, thiab cov turbine casings. Silicon kuj stabilizes pearlite thiab retards nws decomposition thaum qeeb txias, yog li ib tug feem ntau pearlitic matrix txhim kho lub zog thiab hnav tsis kam nyob rau hauv kev pab cuam, ncua lub neej ntawm khiav rollers thiab crushing khoom qhov chaw.
Cov lus nug nquag
Q: Dab tsi yog FeSi70 siv rau hauv cam khwb cia hlau?
A: Inoculation, alloying, eutectic refinement, carbide suppression, fluidity txhim kho, thiab pearlite stabilization.
Q: Yuav ua li cas inoculation txhim kho cam khwb cia hlau?
A: Nws muab graphite nucleation qhov chaw, ua kom zoo, zoo li graphite nrog txo qis.
Q: Dab tsi yog cov ntsiab lus ntawm silicon ntawm FeSi70?
A: Txog 70 feem pua, feem ntau nyob rau hauv 68 mus rau 72 feem pua.
Q: Vim li cas cov hlau dawb tsim teeb meem?
A: Carbide- thaj chaw nplua nuj yog nkig thiab nyuaj rau tshuab, ua rau muaj teeb meem thiab kev siv tshuab.
Q: Ua li cas FeSi70 txhim kho fluidity?
A: Silicon txo qis lub melting point, pab molten hlau sau complex pwm tag.
Q: Dab tsi yog qhov cuam tshuam ntawm pearlite?
A: Silicon stabilizes pearlite, txhim kho lub zog thiab hnav tsis kam hauv kev pabcuam.
Rau FeSi70 cov lus hais nrog koj qib thiab qhov loj me,tiv tauj peb pab neeg muag khoom.