Kev siv hlau casting
Oct 19, 2023| Xuab zeb casting
Xuab zeb casting muaj ntau yam kev hloov pauv, qhov me me, qhov loj, qhov yooj yim, qhov nyuaj, ib feem thiab cov khoom loj tuaj yeem siv tau. Xuab zeb pwm yog cov refractory ntau dua li cov pwm hlau, yog li cov ntaub ntawv uas muaj cov ntsiab lus melting ntau dua xws li tooj liab alloys thiab ferrous hlau kuj feem ntau siv rau hauv cov txheej txheem no.
Sand casting pwm feem ntau yog ua los ntawm cov ntoo, feem ntau hu ua ntoo pwm. Txhawm rau txhim kho qhov tseeb qhov tseeb, aluminium alloy moulds lossis resin pwm nrog lub neej ua haujlwm ntev feem ntau siv. Txawm hais tias tus nqi tau nce, daim ntawv thov ntawm cov xuab zeb casting nws tseem pheej yig dua li cov pwm siv rau hlau pwm casting. Hauv kev tsim cov khoom me me thiab cov khoom loj, tus nqi kom zoo dua yog qhov tseem ceeb.
Hlau pwm casting
Thaum siv hlau pwm casting, cov hauv qab no yuav tsum tau muab xam raws li nram no: lub voj voog tsim ntev thiab tus nqi siab, tsis haum rau ib qho thiab cov khoom me me; tsis haum rau casting nrog complex duab (tshwj xeeb tshaj yog sab hauv kab noj hniav), nyias-walled thiab loj castings (hlau pwm) Cov pwm yog txwv los ntawm qhov loj ntawm cov khoom pwm thiab lub peev xwm ntawm cov kab noj hniav ua cov cuab yeej thiab cov cuab yeej casting, yog li cov hlau pwm yog tsis haum rau zus tau tej cov tshwj xeeb loj castings) cov pwm tus nqi yog kim dua cov xuab zeb pwm thiab pheej yig dua cov tuag casting.
Lub ntiajteb txawj nqus casting
Nws yog dav siv nyob rau hauv zus tau tej cov ntau yam uas tsis yog-ferrous castings, tab sis hlau pwm casting kuj muaj qhov tsis zoo xws li kev siv hlau tsawg, qhov nyuaj ntawm cov txheej txheem txheej txheej txheej castings, thiab cov txheej txheem tsawg ntawm cov castings ntau dua li qhov siab casting.
Kev kub siab casting
Vim hais tias cov hlau molten nyob rau hauv cov kab noj hniav nyob rau hauv kev kub siab thiab kev kub ceev, huab cua nyob rau hauv cov kab noj hniav yog inevitably daig nyob rau hauv lub casting los ua subcutaneous pores, yog li ntawd aluminium alloy tuag castings yuav tsum tsis txhob raug tshav kub, thiab zinc alloy tuag castings yuav tsum tsis txhob muab tshuaj tsuag. ntawm qhov chaw. (tab sis tuaj yeem pleev xim). Txwv tsis pub, cov pores sab hauv ntawm lub casting yuav nthuav dav vim thermal expansion thiab ua rau lub casting deform los yog npuas thaum cov kev kho mob saum toj no tau ua.
Cov neeg kho tshuab txiav nyiaj ntawm kev tuag castings kuj yuav tsum me me, feem ntau nyob ib ncig ntawm 0.5mm, uas tuaj yeem tsis tsuas yog txo qhov hnyav ntawm castings, txo tus nqi txiav kom txo tau tus nqi, tab sis kuj tsis txhob nkag mus rau txheej tuab ntawm cov khoom siv. nto, exposing subcutaneous pores, thiab ua rau lub workpiece yuav tsum scrapped.
Vim lub internal looseness ntawm tuag castings, tsis zoo plasticity thiab toughness, nws yog tsis tsim nyog rau lub tsim ntawm tej yam load qhov chaw. Cov phab ntsa thickness ntawm cov castings yog ib yam, hlau casting daim ntaub ntawv thiab 3 ~ 4 hli nyias-walled castings yog tsim, thiab lub siab tshaj plaws phab ntsa thickness yuav tsum tsawg tshaj li 6 ~ 8 hli los tiv thaiv qhov tsis xws luag xws li shrinkage qhov. Tsis txhob machining los tiv thaiv cov qhov sab hauv.
Tsis tshua muaj siab casting
Cov hlau molten tau ntim rau hauv lub siab, uas tuaj yeem txhim kho qhov fluidity ntawm cov hlau molten, thiab cov casting muaj qhov zoo formability, uas yog qhov tsim nyog rau kev tsim cov castings nrog cov ntsiab lus meej thiab du nto, uas yog qhov zoo dua rau kev tsim cov loj nyias. -walled castings; cov castings crystallize nyob rau hauv qhov kev txiav txim ntawm lub siab Nws yog solidified thiab muaj peev xwm noj tau tag nrho, yog li cov qauv ntawm cov casting yog ntom thiab cov neeg kho tshuab zog siab; cov txheej txheem tawm los ntawm cov hlau molten zoo tuaj. Feem ntau, tsis tas yuav tsum muaj riser, yog li ntawd cov txiaj ntsig ntawm cov hlau molten tau zoo heev. Feem ntau mus txog 90%. Kev ua haujlwm zoo, kev ua haujlwm siab ntau lawm, thiab kev siv tshuab yooj yim thiab automation kuj yog qhov zoo tshaj plaws ntawm kev siv qis qis.
Tsis tshua muaj siab casting muaj ntau yam ntawm cov qib alloy thiab tuaj yeem siv rau ntau yam casting alloys. Tsis tsuas yog rau casting non-ferrous alloys, tab sis kuj rau cam khwb cia hlau thiab cam khwb cia hlau. Tshwj xeeb tshaj yog rau yooj yim oxidized non-ferrous alloys, nws qhia tau hais tias nws superior kev ua tau zoo, uas yog, nws muaj peev xwm tiv thaiv tau cov hlau molten los ntawm ua oxidative slag inclusions thaum lub sij hawm lub pouring txheej txheem. Tsis tshua muaj siab casting tsis muaj kev tshwj xeeb rau cov khoom siv casting.