Poob ua npuas ncauj casting, tseem hu ua khoom pwm casting, yog kev sib koom ua ke thiab ua ke ua npuas ua qauv ntawm tib qhov loj li cov castings rau hauv cov qauv pawg.Tom qab txhuam nrog cov xim refractory thiab ziab, lawv muab faus rau hauv cov xuab zeb qhuav quartz rau kev co qauv, thiab nchuav rau hauv qhov tsis zoo los ua cov qauv pawg.Model gasification, kua hlau occupies txoj hauj lwm ntawm tus qauv, solidified thiab txias los tsim ib tug tshiab casting txoj kev.Tag nrho cov txheej txheem ntws yog raws li nram no:

Ua ntej, xaiv cov hlaws ua npuas ncauj:

Expandable polystyrene resin hlaws dai (EPS) feem ntau yog siv rau casting non-ferrous hlau, grey hlau thiab dav hlau casting.

2. Kev tsim qauv: Muaj ob qhov xwm txheej:

1. Ua los ntawm cov hlaws ua npuas ncauj: pre-foaming - curing - foam molding - txias thiab ejection

①Pre-foaming: Ua ntej cov hlaws EPS ntxiv rau cov pwm, lawv yuav tsum tau ua ua ntej ua npuas ncauj kom nthuav cov hlaws mus rau qhov loj me.Cov txheej txheem ua ntej ua npuas dej txiav txim siab qhov ntom ntom, qhov ruaj khov thiab qhov tseeb ntawm tus qauv thiab yog ib qho ntawm cov kev sib txuas tseem ceeb.Muaj peb txoj hauv kev tsim cov hlaws prefoaming: dej kub prefoaming, chav prefoaming thiab nqus prefoaming.Vacuum pre-foamed hlaws muaj siab foaming tus nqi, cov hlaws qhuav, thiab yog siv dav.

② Kev laus: Cov hlaws ua ntej ua npuas EPS tau muab tso rau hauv qhov chaw qhuav thiab qhov cua rau lub sijhawm.Txhawm rau kom sib npaug ntawm sab nraud lub siab ntawm cov hlaws hlaws, ua kom cov hlaws muaj elasticity thiab rov nthuav dav, thiab tshem tawm cov dej ntawm cov hlaws dai.Lub sijhawm laus yog 8 mus rau 48 teev.

③ Ua npuas ncauj molding: Sau cov khoom ua ntej ua npuas ncauj thiab kho EPS hlaws rau hauv kab noj hniav ntawm cov hlau pwm, thiab ua kom sov cov hlaws kom nthuav dav dua, sau qhov khoob ntawm cov hlaws dai, thiab fuse cov hlaws dai nrog ib leeg los ua ib qho chaw du, tus qauv .Nws yuav tsum tau txias ua ntej pwm tso tawm, kom cov qauv txias kom qis dua qhov kub ntawm qhov muag, thiab cov pwm tuaj yeem tso tawm tom qab tus qauv yog hardened thiab zoo li tus.Tom qab cov pwm tso tawm, yuav tsum muaj sij hawm rau cov qauv kom qhuav thiab dimensionally stabilize.

2. Ua los ntawm cov ntaub ntawv yas ua npuas ncauj: ua npuas ncauj yas ntawv - tiv thaiv hlau txiav - kev sib txuas - qauv.Rau cov qauv yooj yim, cov cuab yeej siv hluav taws xob kuj tuaj yeem siv los txiav cov ntawv yas ua npuas dej rau hauv cov qauv tsim nyog.Rau cov qauv nyuaj, ua ntej siv cov khoom siv hluav taws xob tsis zoo los faib cov qauv ua ob peb ntu, thiab tom qab ntawd muab cov nplaum ua kom nws tag nrho cov qauv.

3. Cov qauv sib xyaw ua ke rau hauv pawg: tus kheej ua tiav (los yog yuav) ua npuas ncauj qauv thiab cov qauv nchuav riser yog sib xyaw ua ke thiab sib koom ua ke los ua ib pawg qauv.Qhov kev sib xyaw no qee zaum ua ntej txheej txheej, qee zaum hauv kev npaj txheej.Nws yog nqa tawm thaum lub sij hawm post-embedding box modeling.Nws yog ib qho tseem ceeb ntawm cov txheej txheem uas ploj lawm ua npuas ncauj (khoom) casting.Tam sim no siv cov ntaub ntawv sib txuas: roj hmab latex, resin hnyav thiab kub yaj nplaum thiab daim kab xev.

4. Qauv txheej: Qhov saum npoo ntawm cov khoom casting ua npuas ncauj qauv yuav tsum tau coated nrog ib tug tej thickness ntawm cov xim los tsim lub puab plhaub ntawm lub casting pwm.Rau cov xim tshwj xeeb rau ploj ua npuas ncauj, ntxiv dej thiab do hauv cov xim sib tov kom tau txais cov viscosity haum.Cov xim sib tov yog muab tso rau hauv lub thawv, thiab cov qauv ua qauv yog coated nrog cov txheej txheem ntawm dipping, txhuam, da dej thiab txau.Feem ntau, siv ob zaug los ua cov txheej thickness 0.5 ~ 2mm.Nws raug xaiv raws li hom casting alloy, cov qauv zoo thiab qhov loj me.Cov txheej yog qhuav ntawm 40 ~ 50 ℃.

5. Kev co qauv: cov txheej txheem suav nrog cov kauj ruam hauv qab no: kev npaj cov xuab zeb txaj - muab EPS qauv - sau cov xuab zeb - sealing thiab shaping.

①Sand txaj npaj: Muab lub thawv xuab zeb nrog cua rho tawm chamber rau ntawm lub rooj vibrating thiab clamp nws kom nruj.

② Muab tus qauv: Tom qab vibrating, tso EPS qauv pawg rau nws raws li tus txheej txheem yuav tsum tau, thiab kho nws nrog xuab zeb.

③ Xuab zeb sau: ntxiv cov xuab zeb qhuav (ntau cov xuab zeb ntxiv), thiab tib lub sijhawm siv kev vibration (X, Y, Z peb cov lus qhia), lub sijhawm feem ntau yog 30 ~ 60 vib nas this, kom cov xuab zeb molding muaj tag nrho cov seem. ntawm cov qauv, thiab cov xuab zeb tau ntim nrog cov xuab zeb.Qhov ceev ceev nce.

④ Seal thiab cov duab: Lub npoo ntawm lub thawv xuab zeb yog ntim nrog cov yeeb yaj kiab yas, sab hauv ntawm lub thawv xuab zeb tau muab tso rau hauv ib lub tshuab nqus tsev nrog lub tshuab nqus tsev, thiab cov xuab zeb nplej yog "coj" ua ke los ntawm qhov sib txawv ntawm qhov cua kub thiab lub siab nyob rau hauv cov pwm, thiaj li yuav kom cov pwm ntawm collapsing thaum lub sij hawm pouring txheej txheem., hu ua "negative pressure setting, feem ntau siv.

6. Pouring hloov: Tus qauv feem ntau softened ntawm li 80 ° C, thiab decomposed ntawm 420 ~ 480 ° C.Cov khoom decomposition muaj peb ntu: roj, kua thiab khoom.Lub thermal decomposition kub yog txawv, thiab cov ntsiab lus ntawm peb qhov sib txawv.Thaum cov khoom pwm yog nchuav, nyob rau hauv lub tshav kub ntawm cov kua hlau, EPS qauv undergoes pyrolysis thiab gasification, thiab ib tug loj npaum li cas ntawm cov roj yog generated, uas yog tsis tu ncua tso tawm los ntawm txheej xuab zeb thiab tawm mus rau sab nraud, tsim ib tug tej yam huab cua. siab nyob rau hauv pwm, tus qauv thiab cov hlau sib txawv.Cov hlau tsis tu ncua nyob hauv txoj haujlwm ntawm EPS qauv thiab nce mus tom ntej, thiab cov txheej txheem hloov ntawm cov kua hlau thiab EPS qauv tshwm sim.Qhov kawg tshwm sim ntawm qhov kev hloov pauv yog qhov tsim ntawm lub casting.

7. Kev ua kom txias thiab ntxuav: Tom qab txias, nws yog qhov yooj yim tshaj kom poob xuab zeb hauv cov khoom casting.Nws yog qhov ua tau kom qaij lub thawv xuab zeb los nqa cov casting tawm ntawm lub thawv xuab zeb lossis ncaj qha nqa lub casting tawm ntawm lub thawv xuab zeb, thiab cov xuab zeb casting thiab qhuav yog ib txwm sib cais.Cov xuab zeb qhuav sib cais yog kho thiab rov siv dua.