Lub particle tso tawm ntawmHigh Alumina CibCov khoom siv raw ncaj qha cuam tshuam nws qhov ntom los ntawm cov txheej txheem hauv qab no, qhov tseem ceeb ntawm qhov uas yog los ua kom zoo rau cov particle stacking efficiency thiab txo porosity:
I. Tus tub ntxhais lub luag hauj lwm ntawm particle qhab nia
1. Sau cov khoob khoob loj (xws li 8-5mm) Sau lub cev pob txha, cov hmoov av nruab nrab (3-0mm) txuas ntxiv ntawm cov khoom seem hauv nruab nrab ntawm nruab nrab, thiab cov hmoov micro
2. Txo cov qhab nia tsim nyog tau txais cov kev kawm tau dawb ntawm lub cev thiab txo cov porosity ntsuab tom qab 15%), tso lub hauv paus rau kev sib tw ua kom tiav.
Ii. High Alumina Crick tseem ceeb rau kev ua kom tiav
1. Cov qhab nia dav (npog cov ntxhib, nruab nrab, zoo, thiab micro hmoov) yog qhov yooj yim dua kom ua tiav cov kev sib tw ntom nti. Rosin - rammler faib: loj dua cov qauv me me, yog li tias qhov loj me me txo qis thiab txhaws ua kom tiav.
2. Particle duab Angular hais (xws li crushed bauxite) muaj ntau dua cov khoom sib xyaw vim tias yuav tsum tau zoo hmoov los sau cov khoob ntawm cov npoo.
III. Quantitive Kev sib raug zoo ntawm kev teeb tsa thiab qhov ceev
1. Ratio of coarse particles Too much coarse particles (>40%) Yuav ua rau lub cev xoob xoob thiab hla kev nkag rau ntawm cov hmoov zoo; Tsawg heev yuav tsis tsim ib qho qauv kev txhawb nqa zoo.
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IV. Cov teeb meem tiag tiag thiab cov txiaj ntsig synergistic
1. High Alumina Cib rau Caas Kilns Siv Cov Hmoov Txhuam (8-5M) 30% + Cov hmoov ntau (5% + Cov hmoov ntau (5%
2. Kev sib koom ua ke nrog lwm cov txheej txheem + tsim kev kub siab: nce ntxiv ntawm cov hmoov zoo rau 50%, sib xyaw ua ke nrog 100%, lub zog hluav taws xob tau mus txog 3.2g / cm³.
Kev hloov me + microwave Sintering: Luv Sintering sijhawm dhau los dhau kev kawm dav, thiab nce cov ntom ntom ntawm 3% -5%.
V. Cov teeb meem thiab kev daws teeb meem
Lub cev qis ntsuab lub zog tsis muaj txiaj ntsig zoo, kev sib txuas lus tsis muaj zog ntawm qhov nce micro hmoov ntxiv rau 20% -30%
Ceev faj tom qab sinining tsis tau raws li cov qauv kawm tiav tsis txaus ntseeg, cov khoom seem loj kho cov ntxhib: Nruab Nrab: 3: 2 lossis 4: 3: 3
Sintering Shrinkage yog ntau dhau hmoov zoo heev hmoov ua rau cov kua dej tsis txaus ntxiv 1% -2% sintering pab (xws li b₂o₃).
