Kev tsim cov pob zeb ua kom muaj zog feem ntau suav nrog precast casting thiab kho. Cov txheej txheem pib nrog kev npaj pwm, feem ntau yog siv cov pwm hlau los yog siab - lub zog sib xyaw cov khoom pwm. Tus neeg sawv cev tso tawm yog siv rau sab hauv phab ntsa kom ntseeg tau tias du demolding tom qab tsim. Cement, aggregates, thiab dej sib tov yog ntsuas raws li tus qauv tsim sib xyaw ua ke thiab ua tib zoo homogenized siv lub tshuab sib tov. Tom qab ntawd cov pob zeb yog poured rau hauv pwm, thiab lub vibrating rooj los yog immersion vibrator yog siv los tshem tawm cov pa npuas, kom ntseeg tau tias cov slurry nyob rau hauv pwm kab noj hniav thiab tsim ib tug ntom qauv. Rau cov ntaub thaiv npog, lub tawb steel hlau yuav tsum raug muab tso rau hauv qhov chaw ua ntej lub pob zeb pib tsim kom tsis txhob muaj kev hloov pauv thiab tsis sib xws. Tom qab nchuav, cov khoom yuav tsum tau npog nrog cov dej noo- khaws cov khoom rau kev kho tus qauv. Qhov kub thiab av noo tsim nyog txhawb cov cement hydration, maj mam tsim lub siab - lub cev tawv tawv. Lub sij hawm demolding nyob ntawm huab cua kub thiab hom cement; tshem tawm cov pwm ntxov dhau tuaj yeem ua rau ntug kev puas tsuaj, thaum tshem tawm nws lig dhau lawm yuav cuam tshuam ntau lawm. Cov txheej txheem no qhia txog kev sib xyaw ua ke thiab kev sib sau ua ke, uas yog qhov tseem ceeb los ua kom muaj kev ncaj ncees thiab ua haujlwm ntev ntawm daim npog npog.
Kev tsim cov cam khwb cia hlau npog daim hlau ua raws cov txheej txheem melting, casting, thiab txias. Cov ntaub ntawv nyoos yog crushed thiab tshuaj xyuas ua ntej muab pub rau hauv cov khoom siv melting, rhuab saum cov kab kua dej kom yaj tag, thiab tom qab ntawd ua tiav los ntawm kev tsim slag, desulfurization, thiab spheroidization los kho cov muaj pes tsawg leeg thiab microstructure. Lub yaj tuav tuav zoo fluidity nyob rau hauv lub tshav kub preservation thiab ces quantitatively txhaj rau hauv ib tug preheated xuab zeb pwm los yog hlau kab noj hniav, sau nrog lub ntiajteb txawj nqus mus cuag cov tsim geometric contour. Qhov kub thiab txias ntawm lub qhov cub yuav tsum tau tswj xyuas kom tsis txhob muaj qhov txias txias, shrinkage porosity, los yog tawg. Cov hlau ua kua maj mam txias hauv cov kab noj hniav thiab dhau los ua eutectic transformation, sib sau ua ib qho khoom casting. Txias tus nqi cuam tshuam rau grain loj thiab graphite morphology. Rau ductile hlau, qeeb qeeb zog txhawb cov nag lossis daus ntawm spheroidal graphite, yog li txhim kho toughness thiab cuam tshuam tsis kam. Tom qab molding, nws yuav tsum tau xuab zeb tshem tawm, tu, trimming, thiab kev tiv thaiv nto los xyuas kom meej qhov tseeb dimension thiab corrosion kuj raws li cov qauv.
Lub molding ntawm cov khoom sib xyaw npog feem ntau siv cov txheej txheem compression molding. Cov resin matrix, curing agent, thiab muab tub lim yog sib xyaw ua ke raws li cov qauv, thiab ua ntej - txiav fiber reinforcement yog nteg, nrog txheej txheej kev coj ua raws li txoj kev xav tau kev ntxhov siab. Tom qab pwm kaw, kev kub siab yog siv rau tag nrho impregnate cov fibers nrog resin thiab tshem tawm cov roj seem. Tib lub sijhawm, tus ntoo khaub lig- txuas cov tshuaj tiv thaiv yog pib nyob rau hauv cov cua sov, ua rau lub matrix hloov ntawm lub viscous flow xeev mus rau ib tug khoom lub xeev. Lub synergistic nyhuv ntawm siab thiab kub tsis tsuas yog ua kom ib tug ntom thiab tsis xws luag- cov khoom pub dawb tab sis kuj tso cai rau kev tswj ntawm fiber ntau feem thiab interfacial bonding zog. Tom qab kho, cov khoom yog demolded, trimmed, thiab nto - kho kom tau ib tug du thiab check cov khoom tiav. Qhov kom zoo dua ntawm cov txheej txheem no yog tias nws tuaj yeem pwm cov duab nyuaj hauv ib kauj ruam thiab ua tiav kev tsim qauv, tab sis nws yuav tsum tau tswj nruj dua pwm precision thiab cov txheej txheem tsis.
Lub molding ntawm pob zeb npog ntog nyob rau hauv qeb ntawm mechanical txiav thiab nto tiav. Tom qab xaiv cov kev taw qhia, cov blocks nyoos raug txiav rau hauv cov nplais raws li qhov loj me uas siv pob zeb diamond ncig saws lossis band saws. Cov txheej txheem txiav yuav tsum tau tswj kev ceev ceev thiab txias lubrication kom txo qis chipping thiab micro- tawg. Cov slabs tom qab ntawd raug kev sib tsoo ntxhib, kev sib tsoo zoo, thiab cov txheej txheem polishing, nce zuj zus txo qhov roughness nrog ntau qhov sib txawv grit kom ua tiav ob qho tib si los tiv thaiv - plam zog thiab kev zoo nkauj. Rau cov slabs loj, splicing thiab reinforcement kuj yog tsim nyog los xyuas kom meej tag nrho cov stability.
Feem ntau, txoj kev tsim cov kwj dej npog yog cov khoom lag luam ntawm kev sib koom ua ke ntawm cov ntaub ntawv tshawb fawb thiab kev tsim tshuab. Txhua tus txheej txheem tsom mus rau kev tshem tawm qhov tsis xws luag, txhim kho cov qauv, thiab txhim kho kev ua haujlwm, muab cov khoom siv txhim khu kev qha rau ntau yam kev siv. Nrog rau kev txhim kho ntawm kev tsim khoom ntse thiab kev tswj xyuas cov thev naus laus zis, kev ruaj ntseg thiab kev sib xws ntawm cov txheej txheem tsim yuav tsum tau txhim kho ntxiv, tsav kev lag luam mus rau qhov zoo dua thiab ua haujlwm zoo.