Raws li kev lag luam xws li kev tsim khoom, kev tsim tsheb, kev siv hluav taws xob, thiab kev tsim kho cov cuab yeej txuas ntxiv mus, cov hlau castings tseem yog cov khoom tseem ceeb hauv ntau hom kev lag luam. Los ntawm cov khoom siv cav, lub twj tso kua mis, thiab lub cev lub cev mus rau cov khoom siv rau cov tshuab hnyav, cov khoom siv hlau cam khwb cia muaj cov qauv zoo heev thiab cov khoom siv ntau yam. Kev nkag siab txog lawv cov yam ntxwv tseem ceeb tuaj yeem pab cov tuam txhab txiav txim siab zoo dua txog kev tsim khoom, xaiv cov khoom siv, thiab cov txheej txheem tsim khoom.
Ib qho kev txhais cov yam ntxwv ntawm cov hlau castings yog lawv lub peev xwm los tsim cov duab nyuaj. Thaum lub sij hawm casting txheej txheem, molten hlau yog poured rau hauv ib tug tshwj xeeb tsim pwm kab noj hniav, qhov twg nws solidifies rau hauv lub geometry yuav tsum tau. Piv nrog rau qee txoj kev machining, casting muab cov txiaj ntsig tseem ceeb thaum tsim cov khoom loj, cov qauv sib txawv, thiab qhov chaw nrog cov geometries nyuaj. Nws tseem tuaj yeem txo cov khoom tshem tawm thaum lub sijhawm ua haujlwm machining tom ntej.
Cov khoom siv ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov kev ua tau zoo ntawm qhov casting. Cov hlau sib txawv muaj qhov sib txawv ntawm lub zog, hardness, hnav tsis kam, corrosion kuj, thiab siab -kub kev ua haujlwm. Cam khwb cia hlau, piv txwv li, paub txog nws qhov kev co zoo -damping peev thiab hnav tsis kam. Cam khwb cia hlau feem ntau muab siab zog thiab toughness, thaum aluminium alloy castings muaj nuj nqis rau lawv qhov hnyav thiab zoo thermal conductivity. Kev xaiv cov khoom siv yog li ntawd yuav tsum tau ua raws li cov khoom siv ua haujlwm ib puag ncig thiab kev ua haujlwm tshwj xeeb.
Qhov tseeb qhov loj me, qhov chaw tiav, thiab cov qauv sab hauv ntawm lub casting kuj tseem cuam tshuam nrog kev tsim khoom. Cov yam ntxwv xws li melting kub, pouring tej yam kev mob, pwm tsim, txias txoj kev, thiab tom qab kev kho cua sov tuaj yeem cuam tshuam qhov kawg ntawm cov khoom. Kev tswj xyuas cov txheej txheem ua tib zoo pab txo qis qhov tsis xws luag, suav nrog porosity, shrinkage kab noj hniav, thiab tawg, thaum txhim kho cov khoom sib xws thiab kev ntseeg tau.
Cov kws tshaj lij kev lag luam taw qhia tias kev ua haujlwm ntawm cov hlau casting tsis yog txiav txim siab los ntawm kev xaiv cov khoom ib leeg. Nws qhov zoo kawg nkaus yog nyob ntawm qhov sib xyaw ua ke ntawm cov khoom siv, kev tsim qauv, thiab kev tsim khoom siv tshuab. Raws li kev tsim khoom niaj hnub txav mus rau kev ua tau zoo dua, cov qauv sib dua, thiab ntau dua qhov tseeb, kev siv thev naus laus zis txuas ntxiv mus. Los ntawm kev ua kom zoo ntawm kev sib xyaw ua ke ntawm cov ntaub ntawv thiab cov txheej txheem tsim khoom, cov hlau castings yuav tsum tswj hwm lawv lub luag haujlwm tseem ceeb thoob plaws ntau qhov kev siv hauv kev lag luam.
