Txheej txheem cej luam ntawm Centrifugal Casting
Centrifugal casting yog txheej txheem uas xa cov khoom ntawm cov khoom siv siab. Yog li ntawd, nws yog cov cuab yeej ntawm kev xaiv rau kev siv xws li dav hlau cav compressor rooj plaub, hydro coj rings, ntau yam khoom siv tub rog, thiab lwm yam kev siv siab. Nws kuj tau ua pov thawj tias nws yog ib qho txiaj ntsig zoo ntawm kev muab cov duab nyuaj nrog txo cov kev xav tau ntawm machining thiab cov nqi tsim khoom qis dua piv rau forgings thiab fabrications.
Cov txheej txheem centrifugal casting txheej txheem pib nrog cov hlau molten raug nchuav rau hauv preheated, spinning tuag. Cov tuag tej zaum yuav yog oriented los ntawm ib tug ntsug los yog kab rov tav axis nyob ntawm seb lub configuration ntawm qhov xav tau ib feem.
Los ntawm spinning pwm thaum lub molten hlau yog poured rau hauv nws, centrifugal quab yuam ua kom faib cov molten hlau nyob rau hauv pwm ntawm pressures mus txog 100 npaug ntawm lub zog ntawm lub ntiajteb txawj nqus. Kev sib xyaw ua ke ntawm qhov kev siv siab no thiab kev siv tshuab engineering ntawm kev tswj kev ruaj khov thiab kev ua haujlwm thib ob ua rau cov khoom zoo tshaj plaws.
Raws li cov tuag pib sau, qhov ntau ntom molten hlau raug yuam mus rau phab ntsa ntawm spinning tuag. Directional solidification ntawm lub suab hlau nce los ntawm OD mus rau hauv lub bore, thaum lub tsawg ntom cov khoom, nrog rau impurities, "floats" mus rau tus ID.
Thaum lub casting tau solidified, ib feem raug tshem tawm ntawm qhov tuag thiab residual impurities nyob rau hauv daim ID yog machined, uas ua rau ib tug tsis xws luag-dawb qauv tsis muaj kab noj hniav los yog gas hnab ris.
Hom Centrifugal Casting
Muaj ob hom centrifugal casting txheej txheem - ntsug thiab kab rov tav. Tsis tas li ntawd, qee cov tuam ntxhab muab qhov ze-net shaping uas sib txuas cov txiaj ntsig ntawm centrifugal casting nrog OD shaping, tej zaum txawm tias nrog cov ntsiab lus tiav ntawm ib qho.peev casting.
Vertical Centrifugal Casting
Qee cov tuam txhab tsim cov khoom siv centrifugal, suav nrog qee qhov nrog OD shaping, nyob rau hauv tuag rotating txog ntsug axis. Cov ntsug castings tuaj yeem ua tiav qhov OD shaping los ntawm kev ntxig graphite, xuab zeb, lossis ceramic pwm rau hauv qhov tuag - ua rau txo qis tom qab ua tiav, xws li machining lossis fabrication.
Cov ntsiab lus nyob rau sab nraud ntawm qhov casting tuaj yeem hloov kho los ntawm qhov tseeb lub voj voog los ntawm kev taw qhia ntawm flanges lossis tus thawj coj mus rau sab hauv txoj kab uas hla ntawm pwm. Qhov ua tiav yuav tsum tsis txhob sib luag tab sis, qee zaum, cov pwm pwm ua kom muaj kev sib npaug thaum tig.
Sab hauv txoj kab uas hla thiab yog li ntawd cov phab ntsa thickness ntawm lub casting yog cov dej num ntawm cov nyiaj ntawm cov hlau poured rau hauv lub rotating pwm thiab kom muaj nuj nqis machined tam sim no. Thaum casting vertically, qhov siab ntawm qhov casting feem ntau yuav tsawg dua ob zaug ntawm qhov dav.
Kab rov tav centrifugal Casting
Qee cov centrifugal casters tsim tsuas yog kab rov tav castings qhov twg tuag rotates txog kab rov tav axis. Qhov no yog ib txoj hauv kev zoo rau kev tsim cov khoom siv tubular zoo.
Cov txheej txheem no yog tshwj xeeb tshaj yog haum rau qhov ntev cylindrical qhov twg qhov ntev casting yog ho ntev dua nws txoj kab uas hla sab nraud. Qhov no suav nrog cov kab ncaj nraim, lub tog raj kheej ntev nrog qhov kawg flanges, lossis luv luv xws li cov nplhaib lossis flanges qhov twg ntau qhov chaw tuaj yeem ua haujlwm zoo los ntawm lub tog raj kheej ncaj.
Ib tug ntev steel casting pwm yog spun ntawm kev kub ceev thaum positioned horizontally. Kev sib hloov ceev ntawm pwm yog siab, kom offset gravitational rog. Npog yog tsau rau ntawm txhua qhov kawg ntawm cov pwm kom muaj cov hlau molten thiab lub ncuav funnel yog siv los xa cov khoom hnyav ntawm cov hlau hauv pwm.
Ib yam li nyob rau hauv ntsug casting, sab hauv qhov loj ntawm cov pwm txiav txim siab OD qhov loj ntawm qhov, thaum tus nqi ntawm cov hlau nchuav rau hauv pwm txiav txim qhov ID loj.
Nqus Centrifugal Casting
Centrifugally casting nyob rau hauv lub tshuab nqus tsev yog siv thaum ib feem nthuav dav thiab kev tswj ntawm raug rau huab cua yog ib qho tseem ceeb vim hais tias ib co alloys, nrog rau cov nickel-cobalt super alloys, yog reactive rau oxygen. Ntxiv nrog rau qhov zoo ntawm casting nyob rau hauv lub tshuab nqus tsev, lub hauv paus muaj siab hlau ncaj ncees xa los ntawm centrifugal casting yog paub, nrog rau kev taw qhia solidification, tsis muaj porosity, thiab net-shaping.Lub tshuab nqus tsev centrifugal castingmuab cov khoom uas muaj kev ntseeg siab heev, feem ntau siv hauv aerospace thiab kev siv tub rog.
Kev taw qhia Solidification
Ib qho tseem ceeb dynamic nyob rau hauv cov txheej txheem centrifugal yog tias solidification yog tswj kom tshwm sim nyob rau hauv ib qho kev taw qhia. Sab nrauv qhov loj thiab cov duab ntawm lub casting yog txiav txim los ntawm qhov tuag (pwm) nto, uas ua raws li ib tug txias kom pib solidification. Nrog kev pab ntawm cov ntaub ntawv exothermal uas yuav muab ntxiv rau ID tom qab nchuav, nrog rau lub dab dej kub ntawm cov pwm ntawm OD, qhov kub thiab txias gradient ua rau kev taw qhia solidification los ntawm OD mus rau ID kua hlau yog pheej yig rau pub lub casting, txhawb nqa. suab hlau kom txog thaum tus ID yog thaum kawg solidified.
Sab nrauv machining feem ntau yog ua los tshem tawm qhov roughness ntawm qhov chaw thiab tswj kev sib txuam nrog lub bore. Txawm li cas los xij, hauv qee qhov kev siv, qhov zoo li-cam khwb cia OD nto yog qhov siv tau. Txhua qhov shrinkage tshwm sim hauv lub centrifugal yog nyob ntawm tus ID, uas yuav ib txwm raug tshem tawm los ntawm machining.
Thaum xaiv Centrifugal Casting
Symmetrical qhov chaw uas tuaj yeem tig ntawm ib qho axis.
Static casting cov khoom siv tsis txaus.
Centerline shrink yog ib qho teeb meem siv lwm yam txheej txheem casting.
Txwv ID nta.
Qhov loj, mus txog 135,000 lbs. / 61,350 kg lossis ntau dua.
High machining nqi rau OD shaping.
Thaum xav tau alloy yuav tsis ua hauj lwm los yog tsis ua tau rau lwm yam txheej txheem.
Yuav tsum muaj cov qauv nplej zoo sib xws.
Yuav tsum muaj kev ncaj ncees.
