Foam ceramic lim tau dhau los ua ib feem tseem ceeb ntawm kev lag luam metallurgical, tshwj xeeb tshaj yog cov txheej txheem hlau pom. Cov lim dej no yog tsim los tshem tawm cov impurities thiab txo cov turbulence thaum lub sij hawm casting txheej txheem ntawm molten hlau xws li txhuas, hlau thiab hlau. Nyob rau hauv xyoo tas los no, ceramic ua npuas ncauj tau txais koob meej vim nws muaj ntau yam zoo dua li cov lim dej ib txwm siv. Yog li, dab tsi yog qhov zoo ntawm foam ceramics?
Ib qho ntawm qhov tseem ceeb tshaj plaws ntawmceramic ua npuas ncauj limyog lawv cov porosity siab thiab thaj chaw tshwj xeeb. Qhov qhib-cell qauv ntawm ceramic ua npuas ncauj tso cai rau molten hlau hla dhau thaum zoo ntes impurities, oxides thiab non-metallic inclusions. Qhov kev tsim tshwj xeeb no txhim kho hlau zoo, txo qhov tsis xws luag, thiab txhim kho cov khoom siv ntawm cov khoom tiav.
Ntxiv nrog rau kev ua tau zoo pom zoo, ceramic ua npuas ncauj kuj muaj thermal stability thiab thermal shock kuj. Lub lim tuaj yeem tiv taus qhov kub thiab txias ntawm cov txheej txheem casting yam tsis muaj kev cuam tshuam nws cov qauv kev ncaj ncees, ua rau nws tsim nyog rau ntau yam ntawm cov hlau alloy sib xyaw thiab cov xwm txheej casting. Cov cuab yeej no yog ib qho tseem ceeb los xyuas kom meej qhov ua tau zoo thiab txhim khu kev pom kev hauv kev lag luam metallurgical.
Lwm qhov zoo ntawm ceramic ua npuas ncauj yog tias nws yog tshuaj inert thiab tsis hnov mob nrog molten hlau. Lub lim yog tsim los ntawm cov khoom siv refractory uas yuav tsis hnov mob nrog cov hlau cam, kom ntseeg tau tias muaj paug tsawg thiab txhim kho tag nrho cov khoom zoo. Cov cuab yeej no yog qhov tseem ceeb tshwj xeeb hauv kev tsim cov khoom zoo aluminium thiab steel alloys, qhov twg txawm tias me ntsis impurity tuaj yeem cuam tshuam rau cov khoom kawg.
Ceramic ua npuas ncauj kuj paub txog nws zoo heev txhua yam muaj zog thiab durability. Lub lim tuaj yeem tiv taus lub siab thiab turbulence ntawm cov txheej txheem hlau casting, uas ua rau pom kev zoo ib yam, txhim khu kev qha. Lawv qhov xwm txheej rugged thiab ruaj khov txo qhov kev pheej hmoo ntawm kev tawg lossis tsis ua haujlwm thaum siv, thaum kawg txuag cov nqi thiab ua kom cov khoom tsim tau ntawm cov hlau casting.
Tsis tas li ntawd, ceramic ua npuas ncauj yog ib puag ncig tus phooj ywg thiab ruaj khov. Cov lim dej no tuaj yeem rov siv tau thiab tuaj yeem siv rov ua dua tom qab siv, txo cov khib nyiab thiab txo qhov cuam tshuam tag nrho ntawm cov txheej txheem hlau casting. Qhov no eco-phooj ywg xwm yog ua raws li kev loj hlob ntawm qhov tseem ceeb ntawm kev tsim khoom lag luam thiab txo qis kev lag luam pov tseg.
Hauv cov ntsiab lus, cov ntxaij lim dej ceramic muaj ntau qhov zoo dua li cov lim dej hauv kev lag luam metallurgical. Lawv cov porosity siab, thermal stability, tshuaj inertness, mechanical zog thiab ib puag ncig sustainability ua rau lawv thawj xaiv rau hlau casting ua hauj lwm. Raws li qhov kev thov rau cov khoom siv hlau zoo txuas ntxiv nce ntxiv, ceramic ua npuas ncauj yuav tsis xav tsis thoob ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj txiaj ntsig thiab kev ntseeg siab ntawm cov txheej txheem hlau pom. Nrog rau kev tshawb fawb tas mus li thiab kev nce qib ntawm cov khoom siv thev naus laus zis, ua npuas ncauj ceramics muaj lub neej yav tom ntej zoo hauv kev lag luam hlau casting thiab metallurgy.
Post lub sij hawm: Jan-08-2024