Casting processing yog txheej txheem uas cov kua hlau molten uas ua tau raws li qhov yuav tsum tau yog nchuav rau hauv cov pwm tshwj xeeb, thiab cov duab xav tau, qhov loj me, thiab kev ua haujlwm tau txais tom qab txias thiab khov kho. Nws yog dav siv hauv aerospace, tsheb, tshuab cuab yeej tsim thiab lwm yam lag luam vim nws cov yam ntxwv zoo heev xws li molding yooj yim, tsis tshua muaj nqi, thiab siv sij hawm tsawg.
Casting technology nyob rau hauv peb lub teb chaws tsis yog ib tug tshiab technology, tab sis ib tug kab lis kev cai cuab yeej cuab tam nrog ib tug ntev keeb kwm. Txawm li cas los xij, cov txheej txheem casting niaj hnub no tsis tuaj yeem ua tau raws li cov kev xav tau niaj hnub no rau cov khoom lag luam casting nyob rau hauv cov nqe lus ntawm kev tsim qauv zoo thiab cov tswv yim tsim. Yog li ntawd, yuav ua li cas los tsim cov txheej txheem casting tshiab yuav tsum muaj kev sib tham tob thiab tshawb fawb. Piv nrog rau lwm txoj kev ua thiab kev tsim, qhov tseeb ntawm cov txheej txheem casting yog qhov tsis zoo, thiab cov yam ntxwv ntawm cov khoom tsis zoo li forging. Yog li ntawd, yuav ua li cas los txhim kho qhov raug ntawm castings thiab optimize lawv cov yam ntxwv khoom kuj tsim nyog rau kev mloog thiab kev tshawb fawb.
Cov khoom siv rau pwm tuaj yeem yog xuab zeb, hlau lossis txawm tias ceramic. Raws li qhov yuav tsum tau ua, txoj kev siv yuav txawv. Dab tsi yog cov yam ntxwv ntawm txhua qhov txheej txheem casting? Yam khoom twg haum rau nws?
1. Xuab zeb casting
Casting khoom: ntau yam ntaub ntawv
Casting zoo: kaum ntawm grams - kaum ntawm tons mus rau pua pua tons
Casting nto zoo: tsis zoo
Casting qauv: yooj yim
Tus nqi tsim khoom: qis
Scope ntawm daim ntawv thov: feem ntau siv casting txoj kev. Tes molding yog tsim rau ib daim, me me batch thiab loj castings nrog complex duab uas nyuaj rau siv lub tshuab molding. Tshuab qauv yog tsim rau nruab nrab thiab me me castings ua nyob rau hauv batch.
Cov yam ntxwv ntawm cov txheej txheem: Cov qauv kev tuav: hloov tau yooj yim thiab yooj yim, tab sis muaj kev ua haujlwm tsawg, kev siv zog ua haujlwm siab, thiab tsis tshua muaj qhov tseeb thiab qhov zoo. Tshuab qauv: siab qhov tseeb thiab nto zoo, tab sis siab peev.
Xuab zeb casting yog cov txheej txheem siv ntau tshaj plaws hauv kev lag luam foundry niaj hnub no. Nws yog haum rau ntau yam ntaub ntawv. Ferrous alloys thiab non-ferrous alloys tuaj yeem nrum nrog cov xuab zeb pwm. Nws tuaj yeem tsim cov castings xws li kaum ntawm grams mus rau kaum tawm tons thiab loj dua. Qhov tsis zoo ntawm cov xuab zeb casting yog tias nws tuaj yeem tsim cov castings nrog cov qauv yooj yim. Qhov zoo tshaj plaws ntawm cov xuab zeb casting yog: cov nqi tsim khoom tsawg. Txawm li cas los xij, nyob rau hauv cov nqe lus ntawm deg tiav, casting metallography, thiab internal ntom, nws kuj yog tsawg. Nyob rau hauv cov nqe lus ntawm kev ua qauv, nws yuav ua tau tes-puab los yog tshuab-puab. Tes molding yog tsim rau ib daim, me me batch thiab loj castings nrog complex duab uas nyuaj rau siv lub tshuab molding. Lub tshuab ua qauv tuaj yeem txhim kho qhov tseeb ntawm qhov chaw thiab qhov tseeb qhov tseeb, tab sis kev nqis peev yog qhov loj.
2. Kev nqis peev casting
Casting khoom: cam khwb cia hlau thiab non-ferrous alloy
Casting zoo: ob peb grams --- ob peb kilograms
Casting nto zoo: zoo heev
Casting qauv: tej complexity
Tus nqi tsim khoom: Hauv kev tsim khoom loj, nws yog pheej yig dua li kev ua tiav tag nrho.
Scope ntawm daim ntawv thov: Ntau yam batch me me thiab complex precision castings ntawm cam khwb cia hlau thiab siab melting point alloys, tshwj xeeb tshaj yog haum rau casting artworks thiab precision mechanical qhov chaw.
Cov yam ntxwv txheej txheem: qhov tseeb qhov tseeb, du nto, tab sis tsis tshua muaj kev ua haujlwm.
Kev nqis peev casting txheej txheem pib ua ntej. Hauv kuv lub tebchaws, cov txheej txheem kev nqis peev casting tau siv los tsim cov hniav nyiaj hniav kub rau cov nom tswv thaum lub caij nplooj ntoos hlav thiab lub caij nplooj zeeg. Kev nqis peev castings feem ntau yog qhov nyuaj thiab tsis haum rau cov castings loj. Cov txheej txheem yog qhov nyuaj thiab nyuaj rau kev tswj, thiab cov khoom siv thiab cov khoom siv kuj tseem kim. Yog li ntawd, nws yog tsim nyog rau zus tau tej cov me me qhov chaw nrog complex duab, siab precision yuav tsum, los yog nyuaj rau ua lwm yam, xws li turbine cav hniav.
3. Poob ua npuas ncauj casting
Casting khoom: ntau yam ntaub ntawv
Casting loj: ob peb grams mus rau ob peb tons
Casting nto zoo: zoo
Casting qauv: ntau complex
Tus nqi tsim khoom: qis dua
Scope ntawm daim ntawv thov: ntau complex thiab ntau yam alloy castings nyob rau hauv sib txawv batch.
Cov yam ntxwv ntawm cov txheej txheem: qhov tseeb qhov tseeb ntawm cov castings yog siab, qhov kev ywj pheej ntawm kev tsim casting yog loj, thiab cov txheej txheem yog yooj yim, tab sis cov qauv combustion muaj qee yam kev cuam tshuam ib puag ncig.
Poob ua npuas ncauj casting yog kev sib koom ua ke thiab sib txuas ua ke ntawm paraffin lossis ua npuas ncauj qauv zoo ib yam li qhov loj thiab zoo li cov castings rau hauv cov qauv pawg. Tom qab txhuam nrog cov xim refractory thiab ziab, lawv tau faus rau hauv cov xuab zeb qhuav quartz thiab vibrated kom zoo, thiab nchuav rau hauv qhov tsis zoo siab kom vaporize tus qauv. , ib tug tshiab casting txoj kev uas cov kua hlau occupies txoj hauj lwm ntawm tus qauv thiab solidifies thiab txias los tsim ib tug casting. Poob ua npuas ncauj casting yog txheej txheem tshiab uas yuav luag tsis muaj npoo thiab raug molding. Cov txheej txheem no tsis xav tau pwm noj, tsis muaj qhov sib cais, thiab tsis muaj cov xuab zeb. Yog li ntawd, lub casting tsis muaj flash, burrs thiab cua ntsawj ntshab nqes hav, thiab txo tus nqi ntawm pwm cores. Dimensional yuam kev tshwm sim los ntawm kev sib xyaw ua ke.
Kaum ib txoj kev casting saum toj no muaj cov txheej txheem sib txawv. Hauv kev tsim cov casting, cov txheej txheem casting yuav tsum raug xaiv rau cov khoom sib txawv. Qhov tseeb, nws yog ib qho nyuaj hais tias qhov nyuaj-rau-loj casting txheej txheem muaj qhov zoo kiag li. Hauv kev tsim khoom, txhua tus neeg kuj xaiv cov txheej txheem siv tau thiab cov txheej txheem nrog cov nqi qis dua.
4. Centrifugal casting
Casting khoom: grey cam khwb cia hlau, ductile hlau
Casting zoo: kaum ntawm kilograms mus rau ob peb tons
Casting nto zoo: zoo
Casting qauv: feem ntau cylindrical castings
Tus nqi tsim khoom: qis dua
Scope ntawm daim ntawv thov: me me mus rau loj batch ntawm rotating lub cev castings thiab yeeb fittings ntawm ntau yam diameters.
Cov txheej txheem nta: Castings muaj qhov siab qhov tseeb, du nto, ntom qauv, thiab kev ua haujlwm siab.
Centrifugal casting yog hais txog ib txoj kev casting uas cov hlau ua kua yog poured rau hauv ib lub pwm rotating, ntim thiab solidified rau hauv ib tug casting nyob rau hauv qhov kev txiav txim ntawm centrifugal quab yuam. Lub tshuab siv rau centrifugal casting yog hu ua centrifugal casting tshuab.
Thawj patent rau centrifugal casting yog npaj los ntawm British Erchardt nyob rau hauv 1809. Nws tsis yog kom txog rau thaum lub xyoo pua nees nkaum thaum ntxov uas cov qauv no tau maj mam saws nyob rau hauv ntau lawm. Xyoo 1930, peb lub teb chaws kuj tau pib siv cov raj centrifugal thiab lub tog raj kheej casting xws li cov kav hlau, lub tes tsho tooj liab, lub tog raj kheej liner, bimetallic steel-backed tooj liab tes tsho, thiab lwm yam. Centrifugal casting yog yuav luag ib txoj hauv kev loj; Nyob rau hauv tas li ntawd, nyob rau hauv tshav kub-resistant steel rollers, ib co tshwj xeeb steel seamless raj blanks, ntawv tshuab ziab drums thiab lwm yam ntau lawm cheeb tsam, centrifugal casting txoj kev kuj siv tau zoo heev. Tam sim no, lub tshuab centrifugal casting tshuab tau tsim thiab ua tau zoo heev, thiab lub tshuab ua haujlwm loj centrifugal yeeb nkab casting rhiav tau tsim.
5. Tsis tshua muaj siab casting
Casting khoom: non-ferrous alloy
Casting zoo: kaum grams mus rau kaum kilograms
Casting nto zoo: zoo
Casting qauv: complex (xuab zeb core muaj)
Tus nqi tsim khoom: Tus nqi tsim khoom ntawm cov hlau yog siab
Scope ntawm daim ntawv thov: cov khoom me me, zoo dua cov khoom loj ntawm cov khoom loj thiab nruab nrab uas tsis yog-ferrous alloy castings, thiab tuaj yeem tsim cov phab ntsa nyias nyias.
Cov yam ntxwv ntawm cov txheej txheem: Cov qauv casting yog ntom, cov txheej txheem tawm los yog siab, cov cuab yeej siv tau yooj yim, thiab ntau yam pwm tuaj yeem siv tau, tab sis cov khoom tsim tau kuj tsawg.
Low-pressure casting yog ib txoj hauv kev uas cov hlau ua kua ua rau cov pwm thiab ua kom muaj zog rau hauv qhov kev ua haujlwm ntawm cov pa roj tsawg. Tsawg-siab casting yog thawj zaug siv rau kev tsim cov aluminium alloy castings, thiab tom qab ntawd nws siv tau txuas ntxiv los tsim cov tooj liab castings, hlau castings thiab steel castings nrog cov ntsiab lus siab melting.
6. Siab casting
Casting khoom: aluminium alloy, magnesium alloy
Casting zoo: ob peb grams mus rau kaum kilograms
Casting nto zoo: zoo
Casting qauv: complex (xuab zeb core muaj)
Cov nqi tsim khoom: Cov tshuab tuag-casting thiab pwm yog kim los ua
Scope ntawm daim ntawv thov: loj ntau lawm ntau yam me me thiab nruab nrab-qhov loj me uas tsis yog-ferrous alloy castings, nyias-walled castings, thiab siab-resistant castings.
Cov yam ntxwv ntawm cov txheej txheem: Castings muaj qhov siab qhov tseeb, du nto, ntom qauv, kev ua haujlwm siab, thiab tus nqi qis, tab sis tus nqi ntawm cov tshuab tuag-casting thiab pwm yog siab.
Siab casting muaj ob yam tseem ceeb: high-pressure thiab high-speed filling ntawm tuag-casting pwm. Nws feem ntau siv kev txhaj tshuaj tshwj xeeb yog los ntawm ntau txhiab mus rau kaum txhiab kPa, lossis txawm tias siab li 2 × 105kPa. Lub filling ceev yog li 10-50m / s, thiab qee zaum nws tuaj yeem ncav cuag ntau tshaj 100m / s. Lub sij hawm txhaws yog luv heev, feem ntau nyob rau hauv thaj tsam ntawm 0.01-0.2s. Piv nrog rau lwm txoj kev casting, tuag casting muaj peb qhov zoo hauv qab no: cov khoom zoo, siab qhov tseeb ntawm castings, feem ntau sib npaug rau qib 6 txog 7, lossis txawm mus txog qib 4; zoo nto tiav, feem ntau sib npaug rau qib 5 txog 8; lub zog Nws muaj zog dua, thiab nws lub zog yog feem ntau 25 ~ 30% siab dua li cov xuab zeb casting, tab sis nws elongation yog txo los ntawm 70%; nws muaj qhov ntev ruaj khov thiab kev sib hloov zoo; nws tuaj yeem tuag-cam khwb cia nyias-walled thiab complex castings. Piv txwv li, tam sim no qhov tsawg kawg nkaus phab ntsa tuab ntawm zinc alloy tuag-casting qhov chaw tuaj yeem ncav cuag 0.3mm; Qhov tsawg kawg nkaus phab ntsa thickness ntawm aluminium alloy castings tuaj yeem ncav cuag 0.5mm; qhov tsawg kawg nkaus casting qhov taub yog 0.7mm; thiab qhov tsawg kawg nkaus xov suab yog 0.75mm.
Lub sij hawm xa tuaj: Plaub Hlis-08-2024
