Casting valveyog cam khwb cia rau hauv lub valve, qhov dav dav casting valve siab qib yog qis (xws li PN16, PN25, PN40, tab sis kuj tseem muaj siab, tuaj yeem yog 1500LD, 2500LB), feem ntau ntawm cov caliber yog ntau tshaj DN50.Forging li qubyog forged tawm.Lawv feem ntau yog siv rau hauv cov kav dej qib siab.Lub caliber me me, thiab lawv feem ntau qis dua DN50.
A, casting
1. Casting: nws yog cov txheej txheem ntawm melting hlau rau hauv cov kua uas ua tau raws li tej yam yuav tsum tau thiab pouring rau hauv lub casting pwm.Tom qab txias thiab solidification, lub casting (qhov chaw los yog dawb paug) yog tau nrog predetermined zoo, loj thiab kev ua tau zoo.Qhov yooj yim technology ntawm niaj hnub machinery manufacturing kev lag luam.
2, casting ntau lawm tus nqi yog tsawg, rau cov duab complex, tshwj xeeb tshaj yog nrog complex kab noj hniav qhov chaw, ntau yuav qhia tau nws kev lag luam;Nyob rau tib lub sijhawm, nws muaj kev hloov pauv dav dav thiab muaj txiaj ntsig zoo txhua yam khoom.
3, tab sis cov ntaub ntawv xav tau rau casting ntau lawm (xws li hlau, ntoo, roj, molding cov ntaub ntawv, thiab lwm yam) thiab cov khoom siv (xws li metallurgical rauv, xuab zeb mixing tshuab, molding tshuab, core-ua tshuab, shaker, txhaj tshuaj blasting tshuab, cam khwb cia hlau phaj, thiab lwm yam) ntau dua, thiab yuav ua rau cov plua plav, cov pa phem thiab cov suab nrov thiab ua paug rau ib puag ncig.
4. Casting yog ib hom hlau kub ua haujlwm tshuab uas muaj keeb kwm txog 6000 xyoo.Nyob rau hauv 3200 BC, castings ntawm bronze qav tau tshwm sim hauv Mesopotamia.Nyob nruab nrab ntawm 13 BC thiab 10 BC xyoo pua, Tuam Tshoj tau nkag mus rau lub hnub qub ntawm bronze castings, cov txheej txheem tau mus txog qib siab, xws li Shang Dynasty Simuwu square Ding hnyav 875 kg, Warring States Dynasty Jinghou Yi Zunpan thiab Western Han Dynasty. Daim iav pob tshab yog cov khoom sawv cev ntawm cov khoom qub qub.Thaum ntxov casting tau zoo heev los ntawm cov tais diav, thiab feem ntau ntawm cov castings yog cov cuab yeej lossis cov khoom siv rau kev ua liaj ua teb, kev ntseeg, lub neej thiab lwm yam, nrog rau cov xim zoo nkauj.Nyob rau hauv 513 BC, Tuam Tshoj tsim thawj cam khwb cia hlau nyob rau hauv cov ntaub ntawv sau nyob rau hauv lub ntiaj teb no - lub Jin Casting Ding (kwv yees li 270 kg).Nyob ib ncig ntawm lub xyoo pua 8th, Tebchaws Europe pib tsim cov hlau cam.Tom qab kev lag luam kiv puag ncig nyob rau hauv lub xyoo pua 18th, castings tau nkag mus rau lub sijhawm tshiab ntawm kev ua haujlwm loj.Nyob rau hauv lub xyoo pua 20th, txoj kev loj hlob sai ntawm casting, tau tsim cov hlau ductile, malleable cam khwb cia hlau, ultra-low carbon stainless hlau thiab txhuas tooj liab, aluminium silicon, aluminium magnesium alloy, titanium puag, npib tsib xee alloy thiab lwm yam ntaub ntawv hlau casting, thiab tau tsim cov txheej txheem tshiab rau grey cam khwb cia hlau los ua kev kho mob.Tom qab xyoo 1950, cov thev naus laus zis tshiab xws li cov xuab zeb ntub dej siab molding, tshuaj hardening xuab zeb molding, core ua, tsis zoo siab molding, thiab lwm yam tshwj xeeb casting thiab txhaj tshuaj blasting tau qhia.
5. Muaj ntau ntau yam ntawm casting.Raws li tus qauv qauv, nws yog customarily muab faib ua 0 zoo tib yam xuab zeb casting, xws li ntub xuab zeb hom, qhuav xuab zeb hom thiab tshuaj hardening xuab zeb hom 3. Lub ntsiab tshwj xeeb casting molding cov ntaub ntawv (xws li, peev casting, pwm casting, plhaub pwm casting foundry, tsis zoo siab casting, pwm casting, ceramic pwm casting, thiab lwm yam) thiab hlau raws li lub ntsiab pwm khoom ntawm tshwj xeeb casting (xws li hlau pwm casting, siab casting, nruam casting, tsis tshua muaj siab casting, centrifugal casting, thiab lwm yam).
6, casting txheej txheem feem ntau muaj xws li: (casting (cov thawv) ua kua hlau khoom casting, casting raws li cov ntaub ntawv yuav muab faib ua xuab zeb pwm, hlau, ceramic, av nkos, graphite, thiab lwm yam., yuav muab faib los ntawm kev siv pov tseg, semi ruaj thiab hom mus tas li, pwm kev npaj zoo yog lub ntsiab tseem ceeb cuam tshuam rau kev ua haujlwm zoo; Lub melting thiab pouring ntawm casting hlau, casting hlau (casting alloy) mas muaj xws li cam khwb cia hlau, cam khwb cia hlau thiab cam khwb cia non-ferrous alloy; (3) casting kev kho mob thiab Kev tshuaj xyuas, kev kho casting, nrog rau kev tshem tawm ntawm cov tub ntxhais thiab casting nto txawv teb chaws lub cev, casting riser tshem tawm, duav sib tsoo burr thiab lwm yam protrusion, kev kho cua sov, shaping, antirust kev kho mob thiab ntxhib machining.
Qhov thib ob forging
1, forging: yog kev siv cov tshuab forging ntawm cov hlau billet siab, yas deformation kom tau txais qee yam khoom siv, qee yam duab thiab qhov loj ntawm forgings txheej txheem.
2, ib qho ntawm ob lub ntsiab tseem ceeb ntawm forging.Los ntawm forging tuaj yeem tshem tawm cov hlau li nrum xoob, vuam qhov, cov khoom siv ntawm forgings feem ntau zoo dua li cov khoom qub qub.Rau cov khoom tseem ceeb nrog kev thauj khoom siab thiab kev ua haujlwm hnyav hauv tshuab, forgings feem ntau yog siv ntxiv rau lub phaj, profile lossis vuam qhov chaw nrog cov duab yooj yim uas tuaj yeem dov.
3, forging raws li txoj kev sib sau tuaj yeem muab faib ua: 0 qhib forging (free forging).Kev siv lub zog los yog siab ua kom cov hlau ntawm sab sauv thiab qis dua ob qho tib si los tiv thaiv cov hlau (anvil block) deformation kom tau txais cov khoom tsim nyog, feem ntau yog phau ntawv forging thiab mechanical forging.② Kaw hom forging.Cov hlau dawb yog deformed nyob rau hauv siab nyob rau hauv lub forging tuag chamber ntawm ib tug tej yam zoo li, thiab forging yuav muab faib ua tuag forging, txias forging, teb forging, extrusion thiab thiaj li nyob.Raws li qhov deformation kub forging tuaj yeem muab faib ua kub forging (qhov ua haujlwm kub siab tshaj qhov ntsuas kub ntawm cov hlau dawb), sov forging (qis dua qhov kub ntawm recrystallization) thiab txias forging (qhov kub li qub).
4, cov khoom siv forging feem ntau yog ntau yam ntawm cov pa roj carbon steel thiab hlau alloy, ua raws li txhuas, magnesium, titanium, tooj liab thiab nws cov alloy.Thawj lub xeev ntawm cov khoom muaj xws li rods, casting chains, hlau hmoov thiab kua hlau.Qhov sib piv ntawm qhov chaw seem ntawm cov hlau ua ntej deformation mus rau qhov chaw tuag tom qab deformation yog hu ua forging ratio.Kev xaiv kom raug forging dua li txhim kho cov khoom zoo, txo tus nqi muaj kev sib raug zoo.
Post lub sij hawm: Jun-01-2021