Hauv kev nqis peev casting, kev npaj slurry yog ib qho kev txiav txim siab hauv pwm plhaub tsim. Txawm tias muaj -cov ntaub ntawv zoo refractory thiab lub plhaub siab heev- cov cuab yeej siv hauv tsev, kev tswj cov slurry tsis raug tuaj yeem ua rau lub plhaub tsis zoo, tsis ruaj khov, thiab nce qhov kev lees paub. Lub qhov dej- npaj slurry ua kom cov txheej txheem sib xws, muaj zog sib txuas, thiab ua haujlwm zoo ib yam ntawm lub plhaub thoob plaws hauv txheej txheem casting.
Xaiv thiab Compatibility ntawm Raw Materials
Slurry zoo pib nrog kev xaiv cov khoom raw. Refractory hmoov, binders, wetting agents, thiab defoamers yuav tsum sib haum nrog ib leeg. Cov khoom siv tsis sib xws lossis kev hloov pauv tsis raug cai feem ntau ua rau tus cwj pwm slurry tsis ruaj khov.
Particle loj tis ntawm refractory hmoov tsim nyog tshwj xeeb mloog. Cov hmoov zoo ntau dhau ua rau slurry viscosity thiab txo cov permeability, thaum cov khoom ntxhib dhau lawm yuav ua rau muaj kev puas tsuaj thiab kev tiv thaiv tsis zoo. Kev siv cov ntaub ntawv los ntawm cov chaw muag khoom ruaj khov thiab tswj xyuas cov yam ntxwv zoo ib yam yog qhov tseem ceeb rau kev txhim khu kev lag luam slurry.
Tswj cov ntsiab lus thiab viscosity
Cov ntsiab lus ncaj qha cuam tshuam rau slurry viscosity, txheej thickness, thiab lub plhaub lub zog. Yog tias cov ntsiab lus ntawm cov khoom qis dhau, cov slurry yuav khiav tawm ntawm cov qauv siv quav ciab, ua rau cov txheej nyias nyias los yog tsis sib xws. Yog tias siab dhau lawm, slurry flowability txo, ua rau tsis zoo deg replication thiab huab cua nkag.
Viscosity yuav tsum tau saib xyuas tsis tu ncua uas siv cov txheej txheem ntsuas. Kev hloov kho maj mam, tsis yog kev kho tam sim ntawd, pab tswj cov slurry stability. Kub kuj cuam tshuam viscosity, yog li kev npaj slurry yuav tsum tau ua raws li kev tswj hwm ib puag ncig.
Kev sib xyaw ua ke thiab kev tswj xyuas lub sijhawm
Kev sib xyaw kom zoo yog qhov tseem ceeb kom ua tiav homogeneous slurry. Kev sib xyaw tsis txaus tuaj yeem tso cov agglomerates uas ua rau muaj qhov tsis xws luag, thaum sib xyaw ntau dhau tuaj yeem ua kom pom huab cua npuas thiab ua kom puas binder qauv.
Lub sij hawm sib tov yuav tsum txiav txim siab raws li qhov ntim slurry, cov khoom siv, thiab cov khoom muaj peev xwm. Lub sijhawm so ib ntus tso cai rau huab cua kom khiav tawm thiab txhim kho slurry sib xws. Kev soj ntsuam tas li thaum lub sijhawm tsim khoom tiv thaiv kev npaj txhij txog slurry degradation.
Kev huv huv thiab kev tiv thaiv kab mob
Slurry systems yog cov rhiab heev rau kev sib kis. Plua plav, roj, wax residues, los yog txawv teb chaws tuaj yeem hloov kho slurry chemistry thiab txo kev sib koom ua ke. Cov cuab yeej tshwj xeeb, cov thawv ntim huv si, thiab kev coj ua hauv tsev nruj yog tsim nyog los tiv thaiv kev sib kis -.
Siv slurry yuav tsum tau lim ua ntej rov siv dua kom tshem tawm cov plhaub tawg los yog impurities. Kev ua tsis tiav feem ntau ua rau lub plhaub ntxhib saum npoo thiab tsis muaj zog interlayer bonding.
Kev laus thiab kev ruaj ntseg tswj
Slurry aging cwj pwm txawv nyob ntawm seb hom binder thiab formulation. Cov slurry tshiab yuav coj txawv ntawm cov laus slurry nyob rau hauv cov nqe lus ntawm flowability thiab adhesion. Tswj kev laus nyob rau hauv kev ruaj ntseg pab txhim kho slurry uniformity thiab kwv yees.
Kev sim tsis tu ncua thiab cov ntaub ntawv ntawm slurry kev ua tau zoo nyob rau lub sijhawm tso cai rau cov tswv lag luam txheeb xyuas cov ncauj lus thiab hloov kho raws sijhawm, tsis txhob muaj qhov hloov pauv sai sai.
Kev cuam tshuam rau Shell Quality
Kev npaj slurry kom zoo ua rau lub plhaub tuab tuab, muaj zog interlayer adhesion, thiab tus cwj pwm kom qhuav kom ruaj khov. Qhov no ncaj qha txo cov kev pheej hmoo xws li lub plhaub tawg, tev, thiab qhov chaw tsis xws luag thaum lub sij hawm casting. Kev tswj cov slurry zoo ib yam kuj tseem txhim kho kev tsim khoom thiab txo cov khoom pov tseg.
Xaus
Kev npaj slurry tsis yog ib qho - lub sijhawm ua haujlwm tab sis cov txheej txheem tswj tsis tu ncua hauv shellSlurry npaj tsis yog ib qho - lub sijhawm ua haujlwm tab sis kev tswj xyuas tas li hauv lub plhaub ua. Los ntawm kev tsom mus rau cov khoom sib raug zoo, kev tswj viscosity, sib xyaw kev qhuab qhia, kev huv huv, thiab kev tswj xyuas kev ruaj ntseg, cov chaw tsim khoom tuaj yeem txhim kho lub plhaub zoo thiab kev ntseeg siab casting. Ua tib zoo slurry npaj nteg lub hauv paus ruaj khov rau kev ua tiav peev casting ntau lawm.
