1. Kev xaiv thiab npaj cov xuab zeb molding
Yuav kom tau txais cov khoom zoo tshaj plaws thiab cov txiaj ntsig kev lag luam zoo, cov pwm (core) xuab zeb yuav tsum muaj cov khoom nram qab no:
1) Zoo formability, nrog rau zoo fluidity, plasticity, toughness thiab non-stick pwm.
2) Muaj zog txaus.
3) Qee qhov huab cua permeability, me me hygroscopicity, tsawg roj ntim.
4) High refractoriness, zoo thermochemical stability, me me expansion tus nqi thiab shrinkage tus nqi.
5) Zoo dua concession, collapsibility thiab durability. Vim tias cov hlau ntub dej yog ib qho yooj yim los tsim cov xuab zeb qhov, qhov pores, nplaum nplaum, xuab zeb thiab lwm yam tsis xws luag, hauv kev xaiv cov xuab zeb ntub dej thiab cov txheej txheem kev npaj, nws yog ib qho tsim nyog yuav tsum tau ua raws li lub hauv paus ntsiab lus, tsis tsuas yog kom muaj lub zog ntawm cov xuab zeb. tsis kam, tab sis kuj yuav tsum muaj huab cua permeability ntau, vim li no, cov xuab zeb ntub dej yog qhov zoo tshaj plaws los siv cov finer 55/100, 70/140, 100/200 semi-polygon. Round ntuj quartz xuab zeb, thiab qhov loj me me yog sib npaug ntawm plaub lub sieve uas nyob ib sab, txhua qhov seem seem yog ntau tshaj 10%, tab sis qhov siab tshaj plaws tsis tuaj yeem tshaj 35%, tib lub sijhawm, cov xuab zeb yog nruab nrog cov thee tsim nyog. hmoov los txhim kho cov xuab zeb tsis kam, txo qhov kub compression kev nyuaj siab ntawm cov xuab zeb, txhim kho cov kub ntub tensile zog. Peb lub Hoobkas feem ntau siv 70/140 polygonal quartz xuab zeb.
(1) Thawj xuab zeb yuav tsum:
Loj: 55/100, 70/140, 100/200
Puab: □ -- ○ ○ -- □
Hom: 4S 1SC 2SC 1N; 4s zoo
(2) Xaiv cov av nplaum sodium bentonite
(3) Pulverized thee: Kev siv ntau dua 95% ntawm cov thee uas tuaj yeem dhau 100 sieve ntau dua 30% ntawm cov volatiles.
(4) Cov qauv ntawm cov xuab zeb ntub dej: npaj raws li ntub me me ntawm cov xuab zeb.
Filling kev txiav txim: rov siv cov xuab zeb, xuab zeb tshiab, av nplaum, pulverized thee, noo noo
Rolling lub sij hawm: 2min-3min
Kho lub sij hawm: 2h -3h
2. Cov txheej txheem ntsuas
(1) ZB148 vibration molding tshuab yog siv los xyuas kom meej cov xuab zeb compactness thiab zoo huab cua permeability.
(2) Teem lub cua riser, ntau lub qhov cua, los tiv thaiv qhov tshwm sim ntawm qhov cua nkag.
(3) Ua kom lub taub hau zoo li qub ntawm cov kua hlau; Lub voj voog kub yog qhov loj thiab cov riser muab tso rau.
(4) Tsim nyog tsim cov txheej txheem pouring thiab txiav txim siab qhov chaw hla ntawm lub rooj vag sab hauv;
ΣF sab hauv {{0}} G/(0.31*μ*t*HP1/2)
Qhov twg: G -- qhov hnyav hnyav;
μ {{0}} ntws coefficient, tus nqi: 0.5-0.55(1280 degree yog 0.5, txhua qhov nce ntawm 50 degree , ntxiv rau 0.05);
t -- lub sij hawm nchuav;
HP - nruab nrab lub taub hau siab.
3. Cov txheej txheem nchuav
Rau zus tau tej cov hlau ntub grey hlau me me, lub pouring kub thiab pouring lub sij hawm yuav tsum tau tswj, cov hlau cov kua yuav tsum tau sedate, thiab lub pouring yuav tsum du thiab nruam.
(1) Kev siv lub qhov cub kub kub, qhov kub tsis txias, qhov kub thiab txias yog tswj ntawm 1340 degree ~ 1380 degree, tab sis lub pouring kub tsis tuaj yeem qis heev, txwv tsis pub, yooj yim rau invade lub porosity, hlau taum porosity;
(2) Lub sij hawm pouring: lub sij hawm pouring yuav tsum nruab nrab, pouring yuav tsum tsis txhob ceev heev, thiab lub sij hawm pouring yuav tsum xam.
t=s*G1/2
G -- tag nrho qhov hnyav ntawm cov kua hlau hauv cov kab noj hniav (nrog rau cov txheej txheem pouring thiab riser) kg;
S -- coefficient, feem ntau 2.2.
4. Kev kho, tiv thaiv xeb, decontamination thiab ziab ntawm tus nqi yuav tsum tau txiav txim siab thaum smelting.
