Raws li qib ntawm industrialization thiab modernization txuas ntxiv txhim kho, aluminium alloy tuag castings tau nce siv hauv ntau yam lag luam. Txawm li cas los xij, txhawm rau xyuas kom meej tias aluminium alloy tuag castings ua tau raws li qhov yuav tsum tau muaj siab, yam xws li qhov shrinkage tus nqi ntawm cov khoom siv casting yuav tsum raug coj mus rau hauv tus account. Kab lus no yuav muab cov ncauj lus qhia ntxaws ntxaws txog qhov shrinkage tus nqi ntawm aluminium alloy tuag-casting qhov chaw thiab yuav ua li cas cuam tshuam nrog kev cuam tshuam ntawm shrinkage tus nqi ntawm qhov zoo ntawm aluminium alloy tuag-casting qhov chaw.
Dab tsi yog qhov shrinkage tus nqi ntawm aluminium alloy tuag castings?
Lub shrinkage tus nqi ntawm aluminium alloy tuag castings yog hais txog qhov kev faib ua feem ntawm lub ntim txo uas tsim los ntawm cov txheej txheem solidification ntawm casting thaum lub sij hawm txias txheej txheem. Lub shrinkage tus nqi ntawm cov ntaub ntawv casting yog nyob ntawm tej yam xws li lub cev lub cev, cov duab, thiab qhov loj ntawm cov khoom, thiab feem ntau yog muab nyob rau hauv daim ntawv ntawm ib tug nruab nrab feem pua los yog ib tug feem pua nrog ib tug tej yam ntau yam ntawm variation, thiab qhov nruab nrab shrinkage tus nqi. cov ntaub ntawv yog qhov feem ntau siv qhia.
Puas yuav shrinkage tus nqi ntawm aluminium alloy tuag castings cuam tshuam qhov zoo ntawm castings?
Thaum tsim thiab tsim high-precision aluminium alloy tuag castings, qhov shrinkage tus nqi ntawm cov khoom siv casting yuav tsum tau xav txog. Los ntawm kev xaiv cov khoom pwm tsim nyog thiab sim ua cov pwm tsim, kev txo qis tuaj yeem txo qis. Qhov no txo qis qhov cuam tshuam ntawm shrinkage ntawm qhov tseeb qhov tseeb ntawm qhov tuag casting.
Hauv kev tsim khoom tiag tiag, tus nqi shrinkage ntawm cov khoom siv casting sib txawv. Yog li ntawd, cov phiaj xwm ntsuas yuav tsum tau ua raws li qhov xwm txheej tiag tiag kom txo tau cov duab zoo sib xws rau tus nqi shrinkage, thiaj li ua kom ntseeg tau tias aluminium alloy tuag castings ua tau raws li qhov yuav tsum tau ua.
Yuav ua li cas nrog lub shrinkage ntawm aluminium alloy tuag castings?
1. Xaiv cov khoom pwm tsim nyog
Thaum tsim pwm rau aluminium alloy tuag-casting qhov chaw, koj thawj zaug yuav tsum xaiv cov khoom pwm tsim nyog. Feem ntau, qhov shrinkage tus nqi ntawm cov ntaub ntawv casting tsis tuaj yeem txwv, yog li cov pwm loj yuav tsum tau hloov kho raws li cov ntaub ntawv xeem. Feem ntau, me me-batch ntau lawm pwm yog thawj zaug rau kev kuaj ua ntej.
2. optimize pwm qauv thiab tsim
Ua ntej ua cov pwm ntau lawm, nws raug nquahu kom tsim cov txheej txheem tuag-casting tsim nyog los txiav txim siab tus qauv kawg, qhov ntev ua haujlwm, thiab kev kam rau siab ntawm aluminium alloy tuag-casting qhov chaw. Tom qab ntawd, raws li lub hauv paus no, cov pwm, trimming system, thiab pwm qauv tsim.
3. Siv cov khoom siv xovxwm zoo
Cov xovxwm zoo tuaj yeem pab tswj tag nrho cov txheej txheem tuag-casting, kom ntseeg tau tias txoj caialuminium tuag-cast ib feemyog poured thiab txias tusyees. Cov cuab yeej xovxwm zoo tshaj plaws ua kom ntseeg tau tias lub cev tsis muaj kev txwv tsis pub dhau qee qhov kev txwv los ntawm kev ua haujlwm raug thiab rov ua dua.
Lub shrinkage tus nqi ntawm aluminium alloy tuag castings yog hais txog qhov kev faib ua feem ntawm cov ntim txo tau tsim thaum lub sij hawm txias thiab solidification txheej txheem ntawm castings. Lub shrinkage tus nqi ntawm cov ntaub ntawv casting nyob ntawm lub cev lub cev, cov duab, thiab qhov loj ntawm cov khoom. Raws li cov yam ntxwv ntawm cov ntaub ntawv sib txawv, ntau txoj kev yuav tsum tau txais kev pom zoo los txo qhov kev cuam tshuam tsis zoo los ntawm qhov shrinkage tus nqi ntawm aluminium alloy tuag castings. Xaiv cov ntaub ntawv pwm tsim nyog, txhim kho cov qauv pwm thiab tsim, thiab siv cov khoom siv xovxwm zoo yog cov yuam sij rau kev ua kom zoo ntawm aluminium alloy tuag castings thiab ua tiav high-precision aluminium alloy tuag casting ntau lawm.
Kev suav cov mis rau shrinkage tus nqi ntawm aluminium alloy tuag-casting qhov chaw
Tus nqi ntawm shrinkage ntawm txhua qhov ntev thaum lub casting txias tuaj yeem tau los ntawm cov qauv hauv qab no:
Shrinkage=Casting loj × Casting shrinkage
Cov yam ntxwv cuam tshuam rau casting shrinkage
- Cov khoom ntawm castings. Casting shrinkage tus nqi kuj txawv nyob ntawm seb cov khoom ntawm castings. Piv txwv li, lub shrinkage tus nqi ntawm cam khwb cia hlau yog ntau dua li ntawm grey cam khwb cia hlau; Thaum muaj sulfur ntau dua nyob rau hauv grey cam khwb cia hlau, lub shrinkage tus nqi nce, thiab thaum muaj ntau silicon nyob rau hauv grey cam khwb cia hlau, lub shrinkage tus nqi txo.
- Cov qauv ntawm cov casting yog complex thiab nyuaj rau shrinkage, thiab shrinkage tus nqi ntawm cov casting yog txo. Piv txwv li, steel castings poured nrog tib muaj pes tsawg leeg muaj cov qauv sib txawv. Ntawm lawv, tus nqi shrinkage yog qhov loj tshaj plaws thaum lub sij hawm pub dawb contraction.
- Lub yieldability ntawm casting pwm yog zoo thiab lub shrinkage tus nqi ntawm lub casting yog nce. Piv txwv li, castings cam khwb cia nrog ntub dej thiab dej iav xuab zeb pwm muaj qhov shrinkage ntau dua li cov casts qhuav. Nyob rau hauv tib txoj kev, raws li qhov luaj li cas ntawm lub casting nce, lub yieldability ntawm lub casting yuav zuj zus, thiab shrinkage tus nqi ntawm cov casting kuj txo.
Yog li ntawd, qhov casting shrinkage tus nqi yuav tsum tau xaiv raws li qhov tseeb qhov teeb meem. Rau cov castings uas yuav tsum tau muaj qhov ntev, qhov casting shrinkage tus nqi yuav tsum raug kho raws li qhov kev xeem castings.
Rau tib qhov casting, vim yog cov qauv tsim, nws cov nqi shrinkage nyob rau hauv cov lus qhia axial thiab radial los yog hauv peb cov lus qhia ntawm qhov ntev, dav, thiab qhov siab yuav tsis sib haum. Rau cov castings uas yuav tsum tau loj npaum li cas, sib txawv shrinkage tus nqi yuav tsum tau muab nyob rau hauv txhua txoj kev. Nyob rau hauv qhov tseeb ntau lawm, dav castings, tshwj xeeb tshaj yog me me castings, siv tib shrinkage tus nqi nyob rau hauv tag nrho cov lus qhia. Txawm hais tias qhov no yuav ua rau qee qhov yuam kev, qhov ua yuam kev feem ntau tsis loj, thiab qhov no ua rau kev ua haujlwm zoo thiab tsim cov pwm.