Lub plasma arc combustion hom ntawm surfacing raw khoom rau lub rooj vag valve ua

Lub plasma arc combustion hom ntawm surfacing raw khoom rau lub rooj vag valve ua

Forging, forging, forging steel valve tsuas yog siv rau forging stainless hlau rooj vag valve, forging steel hais txog kev xaiv ntawm forging txoj kev thiab tsim los ntawm ntau yam forging thiab casting steel qhov chaw.
Cov txheeb ze zoo ntawm forged steel valve stainless hlau castings yog siab, tuaj yeem tiv taus qhov cuam tshuam quab yuam, plasticity, toughness thiab lwm yam ntawm lub cev muaj zog yog siab dua stainless hlau castings, yog li thaum twg ib co tseem ceeb tshuab qhov chaw yuav tsum tau siv nyob rau hauv forged steel. , forged steel feem ntau yog siv rau kev kub siab pipeline.
Nrog ib tug ilv mechanism, haum rau kev kub siab ua hauj lwm yam ntxwv.
Forging yog ib qho ntawm ob yam khoom ntawm casting. Cov khoom tseem ceeb uas muaj kev thauj khoom siab thiab kev ua haujlwm nyuaj hauv cov cuab yeej siv tshuab feem ntau yog cam khwb cia hlau, uas yooj yim thiab tuaj yeem ua tau txias-dov welds, tshwj tsis yog rau cov ntawv txhuas profile.
Vuam qhov thiab li-cam khwb cia looseness ntawm hlau composites yuav raug tshem tawm los ntawm forging.
Kev xaiv raug ntawm forging check los txhim kho cov khoom zoo, kev tswj tus nqi muaj kev sib raug zoo.
Lub ntsiab forging cov ntaub ntawv yog carbon steel, stainless hlau phaj thiab carbon hlau.
Forging ratio yog hais txog qhov sib piv ntawm tag nrho cov ntu ntu ntawm cov khoom siv hlau ua ntej deformation mus rau qhov chaw tuag tom qab deformation.
Tus thawj lub xeev ntawm raw cov ntaub ntawv muaj xws li casting, round rods, zoo nco alloys thiab hlau hmoov.
Lub cev lub cev ntawm cov hlau castings feem ntau zoo dua li cov khoom siv raw. Forging yog tsim los ntawm nias cov hlau embryo nrog cov cuab yeej forging, kom cov duab ntawm cov embryo alloy tuaj yeem hloov tau kom tau txais cov txheej txheem ua haujlwm nrog qee cov duab tshwj xeeb thiab lub cev zoo.
Forging steel valve qauv ua tshuab: valve lub cev zoo thiab cov yam ntxwv ncaj qha cuam tshuam rau lub neej kev pabcuam ntawm lub rooj vag valve thiab kev nyab xeeb.
Yog li ntawd, lub forged valve lub cev yuav tsum tau siv nyob rau hauv lub premise ntawm tsis zoo ua hauj lwm ib puag ncig los yog siab kev ruaj ntseg ntawm lub rooj vag valve.
Rau DN50 nres valve, nres valve, kos valve, thiab lwm yam., feem ntau ntawm domestic siv tag nrho forging tsim tom qab vuam ntawm ob sab ntawm cov txheej txheem flange, kuj tseem muaj cov tuam txhab txuas flange forging ua ke.
Tab sis rau 2 nti saum toj no lub me me caliber valve lub cev, vim yog tsis muaj forging yuav tsum tau los ntawm lub super hnyav multi-directional forging tshuab khoom, xav kom ua tiav industrialization ntawm loj zuag qhia tag nrho forging qhov chaw muaj ib tug tej yam nyuaj. Yog li ntawd, ntau manufacturers los ntawm cov ntshuam ntawm loj thiab nruab nrab-qhov loj qhov me valve lub cev casting, los yog nrog ib co tuam txhab uas muag nyob rau hauv lwm lub teb chaws los tsim daim ntawv thov ntawm forged valve lub cev qhov chaw.
Taichenson tau tshaj tawm cov ntawv thov thev naus laus zis tshiab ntawm shearing extrusion rau lub cev lub cev ntawm qhov loj thiab nruab nrab forged steel valve. Los ntawm kev ua kom zoo dua ntawm nws qhov zoo ntawm kev tiv thaiv ib puag ncig, txuag hluav taws xob thiab kev txuag hluav taws xob, raws li kev sim kev tshawb fawb ntawm valve lub cev tsim tshuab, thev naus laus zis Performance index ntawm shearing extrusion rau valve lub cev tau txais.
Tag nrho cov txheej txheem ntawm shear - extrusion forming yuav tsum siv shear deformation raws li cov txheej txheem tseem ceeb ntawm cov hlau yas ua. Lub hauv paus txheej txheem mechanical yam ntxwv ntawm txoj kev siv technology yog hais tias lub zog thov yuav raug txo.
Nyob rau hauv lem, nws zoo heev txo tus naj npawb ntawm tons ntawm lub tshuab xav tau rau tag nrho cov txheej txheem ntawm txoj kev.
FIG. l qhia lub hauv paus ntsiab lus ntawm txiab-extrusion tsim ntawm ceg thiab diav rawg qhov chaw.
Kab kab pheeb ces kaum ntawm daim duab qhia tau hais tias shear deformation cheeb tsam nyob rau hauv lub shear - extrusion txheej txheem.
Tsis tsuas yog nws tsim ib tug loj shear deformation nyob ib ncig ntawm oblique kab.
Tus so ntawm tag nrho trichoderm tsim ib qho me me ntawm ntau yam sib txawv. Hauv qab ntawm rab koob.
Cov hlau nyob rau hauv nruab nrab ntawm ob lub shear bands ntws mus rau hauv lub concave kab noj hniav ntawm cov cuab yeej sib tsoo zoo ib yam, thiab cov diav rawg yog tsim.
Rau qhov txiav tawm valve lub cev nrog ob rab diav rawg qhia hauv daim duab 2.
Yog txiav ib tug extrusion ua rau sab sauv diav rawg thiab ces tsim lub sab ceg nkhaus, 2 ceg diav rawg forming kuj yuav nqa tawm nyob rau hauv ib tug mob stroke txoj kev ntawm koob. Ua ntej lub valve lub cev mus nqa tawm cov kev tshawb fawb ntawm sciss-extrusion ntau lawm thiab kev khiav hauj lwm txheej txheem xeem, thawj xaiv ntawm t / 3 taw ntawm lub shrinkage ib feem los ua lub cev simulation scientific kev tshawb fawb, tau txais cov txheej txheem siv index ntawm sciss. -extrusion forming, thiaj li tsim tau lub ntsiab tsis ntawm ntau lawm thiab kev khiav hauj lwm txheej txheem xeem.
Siv cov cuab yeej ua haujlwm ntawm DN100 txiav-tawm valve lub cev ua piv txwv, raws li kev tshawb fawb tshawb fawb ntawm cov txheej txheem kev ua haujlwm ntau lawm.
Cov txheej txheem Performance index ntawm DNlOOmm txiav tawm valve lub cev nrog 20 steel shear extrusion khoom yog tau raws li nram no: cov cua kub kub ntawm cov plaub hau embryo qauv yog 1200 ℃, thiab cov cua kub ntawm cov cuab yeej sib tsoo yog 100 ~ 300 ″ C.
High purity graphite kua tus neeg sawv cev raug xaiv ua roj nplua nyeem.
Lub koob punching yog tapered, thiab rab koob punching aperture yog ~ '108mm. Cov qauv yog cov seem dawb nrog flanges. Cov khoom siv sim yog lO00t clutch ntsia hlau xovxwm, thiab cov kev ua haujlwm tseem ceeb tau qhia hauv Table l. Lub cev muaj zog hauv forging xws li.
Raws li kev ua haujlwm tseem ceeb ntawm lub tshuab xuas nrig ntaus thiab lub hauv paus ntsiab lus ntawm shear - extrusion txheej txheem ntawm cov qauv, ib txheej ntawm cov cuab yeej sib tsoo yog tsim. Ua ntej qhov kev sim, qhov yuav tsum tau muaj zog loj yog xam raws li kev simulation xeem, cov specifications ntawm steel castings thiab cov khoom siv ntawm cov hlau castings.
Tom qab suav thiab suav, 1O00t xuas nrig ntaus tshuab tuaj yeem ua tau raws li Qi. Lub forging forming ntawm me me txoj kab uas hla cut-off valve lub cev yog pom nyob rau hauv loj, me me thiab nruab nrab cov khoom, uas ua pov thawj tias cov txheej txheem txiav thiab extrusion txheej txheem muaj cov yam ntxwv ntawm ib puag ncig tiv thaiv, txuag hluav taws xob thiab kev txuag hluav taws xob.
Muaj peev xwm tsim lub zuag qhia tag nrho forging ntawm loj thiab nruab nrab-qhov loj me txiav tawm valve lub cev nyob rau hauv Tuam Tshoj cov khoom siv tam sim no.
Ntxiv rau.
Lub forging thiab sib sau ntawm tee yeeb nkab thiab lwm yam loj thiab nruab nrab-qhov loj me diav rawg yuav kawm scientific los ntawm cov cuab yeej ntawm shearing thiab squeezing.
Forging tuaj yeem muab faib ua: (1) kaw forging (free forging).
Nws tuaj yeem muab faib ua dawb forging, teb forging, txias extrusion, extrusion forming, thiab lwm yam, cov hlau embryo yog muab tso rau hauv forging tuag nrog ib tug tej yam zoo li quab yuam lub deformation thiab tau cov cam khwb cia hlau. Raws li qhov ntsuas kub deformation, nws tuaj yeem muab faib ua qhov txias forging (forging kub yog qhov kub ib txwm), sov forging (forging kub yog qis dua qhov kub ntawm cov embryo hlau) thiab kub forging (forging kub yog siab tshaj qhov recrystallization kub) .
(2) qhib forging (dawb forging).
Muaj ob hom kev tuav forging thiab mechanical forging. Lub alloy embryo yog muab tso rau nruab nrab ntawm ob lub pob zeb thaiv (hlau) thiab qhov cuam tshuam quab yuam los yog lub nra hnyav yog siv los ua deformation ntawm cov hlau embryo kom tau txais cov hlau casting.
Kev sib piv ntawm forged thiab cam khwb cia steel li qub: Cam khwb cia steel li qub yog siv los cam khwb cia hlau hauv casting qhov chaw.
Ib hom casting alloy.
Hlau casting yog muab faib ua peb pawg: cam khwb cia carbon steel, forged siab alloy steel thiab forged tshwj xeeb hlau.
Hlau casting yog ib hom hlau casting los ntawm txoj kev casting.
Hlau castings feem ntau yog siv los tsim qee qhov chaw uas muaj qhov nyuaj hauv qhov tsos, nyuaj rau forged los yog grinded thiab yuav tsum tau muaj zog thiab plasticity.
Qhov tsis zoo ntawm cov hlau casting yog qhov piv nrog cov hlau forged, cov xuab zeb qhov tsis zoo yog qhov loj dua, thiab cov txheej txheem zoo li kab rov tav, thiab lub zog compressive tsis zoo li forged steel. Yog li ntawd, forged steel li qub feem ntau yog siv los ua lub luag haujlwm tseem ceeb hauv qhov tseem ceeb ntawm cov kav dej hauv qab kev kub ntxhov thiab kub kub tsis tu ncua.
Forging, forging, forging steel valve thev naus laus zis kev txhim kho txoj kev npaj: nws yog ib qho tsim nyog yuav tsum siv lub taub hau ** nthuav dav, mus rau lub rooj vag valve tom qab kev teeb tsa hauv kev nyab xeeb channel (kev nyab xeeb channel aperture loj kam rau ua kom tsim nyog) raws li qhov chaw siv, ob sab ntawm kev nthuav dav tib lub sijhawm.
Forged steel valve lub cev rebound quab yuam ntau tshaj qhov siab siab rooj vag valve rebound quab yuam, valve lub cev lub qhov nrees qhwv lub siab siab rooj vag valve, tsis muaj qhov sib txawv, compact qauv. Yog li ntawd, axial load yuav tsum nruj me ntsis tswj.
Thaum lub siab siab lub rooj vag valve yog nias rau lub valve lub cev, lub valve lub cev kab noj hniav yuav tsum tau hloov nyob rau hauv lub elastic txwv, kom ntseeg tau tias tom qab lub expansion quab yuam ploj, lub valve lub cev kab noj hniav rov qab elasticity, sau lub siab siab rooj vag valve rov qab elasticity, kom lawv lo rau ib leeg, thiaj li txwv tsis pub cov axial loj heev.
Txhawm rau kom tsis txhob muaj kev ntxhov siab ntau dhau hauv av, lub zog ntawm forged steel valve siab siab lub rooj vag valve tail khoom tsis yooj yim rau siab, zoo plasticity thiab tsis tshua muaj zog, thiab tswj lub installation load.
Nyob rau tib lub sijhawm, txhawm rau kom ntseeg tau tias qhov siab ceev rooj vag valve siab dua, thiaj li muaj kev kub siab rau tom qab tsawg dua rov qab lub zog ntev yog tsis tsawg tshaj li ob peb lub thickness.
Xaiv "tom qab thauj khoom xovxwm" ua tshuab, tuaj yeem ua kom zoo, forging steel valve siab lub rooj vag valve ntau lawm thiab kev ua haujlwm yooj yim, txhim kho kev ua haujlwm siab ntawm lub tshuab ntim khoom. plasma arc combustion txoj kev ntawm surfacing raw khoom ntawm lub qhov rooj valve ua technology nyob rau hauv lub qhov ncauj noj plasma surfacing, cov hmoov yog raug rau cua sov txaus, tab sis tsis txhob txo cov txaws ntawm cov hmoov, yog li ntawd cov melting tus nqi kuj tau.
Lub ntsiab qhov tsis zoo ntawm kev pub hmoov hauv lub qhov ncauj yog qhov molten aluminium alloy sticks rau lub qhov ncauj.
Molten aluminium alloy adhering rau lub qhov ncauj phab ntsa los yog inlet thiab qhov hluav taws xob rau ib tug tej yam tag nrho cov kev poob rau hauv lub pas dej ua ke, uas ua rau melting tee, hnyav dua thaum thaiv lub qhov ncauj qhov ncauj.
Txhawm rau kom tsis txhob muaj qhov xwm txheej saum toj no, tungsten ncej thiab lub qhov nozzle yuav tsum muaj lub siab coaxiality los xyuas kom meej tias cov hmoov txhuas xa tawm sib npaug ntawm lub nozzle. Tsis tas li ntawd, tag nrho cov ndlwg ntawm hmoov av yuav tsum tsim nyog, tsis txhob ua rau cyclone txav.
(1) Plasma arc combustion hom (1) Combined plasma arc: non-migrating arc yog siv rau cua sov alloy hmoov: migrating arc tsis tsuas sov alloy hmoov, tab sis kuj yaj lub nto ntawm cov khoom qub.
Rau nws tus kheej-fusible alloy hmoov surfacing, vim hais tias ntawm high powdery melting point, cov nyhuv ntawm non-migrating arcs yog tsis pom tseeb: thaum surfacing zoo hmoov nrog kuj siab melting point, cov nyhuv ntawm non-migrating arcs yog pom tseeb.
Qhov saum npoo vuam ntawm nyias thiab me me feem ntau yog siv cov plasma arc ua ke.
(2) Transferable plasma arc: Txij li thaum tsis hloov pauv arc tsis ua lub luag haujlwm tseem ceeb, hauv ntau qhov chaw tsuas yog hloov pauv tau siv los nqa tawm qhov chaw, uas tuaj yeem txuag tau cov txheej txheem hloov hluav taws xob.
(3) Cov plasma arc sib xyaw ua ke ntawm series hluav taws xob arc: nws muaj qhov zoo ntawm qhov zoo ion arc tsim ntawm lub nozzle thiab qis qis tsis yooj yim los nthuav lub tshuab hluav taws xob ntawm lub tshuab hluav taws xob ntawm lub pas dej molten, uas tuaj yeem txwv qhov zoo. melting qhov tob.
Txawm hais tias qhov no arc cua sov yog dispersed, nws tseem tuaj yeem tswj tau qhov tshwj xeeb txaus. Lub plasma arc nrog txoj kev no yog siv los tswj qhov tam sim no ntws ntawm qhov zoo ion arc. Yog tias cov dej ntws tam sim no nce, lub nozzle ablation yog qhov hnyav dua, tab sis kev txhim kho ntawm cov dej txias cua sov dissipation, qhov teeb meem no tuaj yeem txhim kho.
Txoj kev plasma arc tsis tshua siv hauv Suav teb.
(2) Txoj kev xa hmoov hmoov Tam sim no, ob hom hmoov xa tuaj yog siv: hmoov xa hauv lub qhov ncauj thiab hmoov xa tawm sab nraum lub qhov ncauj. Nyob rau hauv lub nozzle pub ntshav plasma surfacing, cov hmoov yog raug rau cua sov txaus, tab sis kuj yuav txo tau cov txaws ntawm cov hmoov, muaj peev xwm tau kuj siab melting tus nqi.
Lub ntsiab tsis zoo ntawm kev xa cov hmoov nyob rau hauv lub qhov ncauj yog molten aluminium alloy sticks rau lub qhov ncauj.
Molten aluminium alloy adhering rau lub qhov ncauj phab ntsa los yog inlet thiab qhov hluav taws xob rau ib tug tej yam tag nrho cov kev poob rau hauv lub pas dej ua ke, uas ua rau melting tee, hnyav dua thaum thaiv lub qhov ncauj qhov ncauj.
Txhawm rau kom tsis txhob muaj qhov xwm txheej saum toj no, tungsten ncej thiab lub qhov nozzle yuav tsum muaj lub siab coaxiality los xyuas kom meej tias cov hmoov txhuas xa tawm sib npaug ntawm lub nozzle. Tsis tas li ntawd, tag nrho cov ndlwg ntawm hmoov av yuav tsum tsim nyog, tsis txhob ua rau cyclone txav. Nyob rau hauv lub nozzle plasma surfacing, cov hmoov hlau alloy tsis raug xa mus rau hauv lub plasma arc sab nraum lub nozzle, uas zoo daws qhov teeb meem ntawm dripping thiab nozzle thaiv. Lub melting qhov tob raws li tus qauv zoo sib xws yog me dua lub qhov ncauj noj hmoov, qhov no yog vim hais tias thaum lub qhov ncauj noj hmoov, cov hmoov cyclone nyob rau hauv lub nozzle twb ho rhuab, thiab cua tshuab ncaj qha mus rau lub pas dej ua ke, uas ua rau ib tug loj ntxiv tshuab. : thiab thaum lub qhov ncauj noj hmoov, qhov ntxiv tshuab quab yuam los ntawm cov hmoov roj yog txo.
Lub ntsiab tsis zoo ntawm kev xa cov hmoov sab nraum lub qhov ncauj yog cov hmoov loj dispersion theem thiab qis aluminium alloy stacking tus nqi.
(3) Plasma surfacing steam thiab alloy hmoov feem ntau yog siv cov roj ntshiab hydrogen ua haujlwm (tseem hu ua cov roj ion zoo, arc stabilizing gas), hmoov roj thiab tiv thaiv roj.
Hydrogen plasma arc muaj qhov tsis tshua muaj tam sim no, ruaj khov ignition, me me tungsten electrode thiab nozzle ablation.
Qee cov ntawv thov txawv teb chaws yog 70% hydrogen thiab 30% helium li roj lossis hmoov roj, uas ua rau kev ua haujlwm voltage ntawm plasma arc nce, thiab yog li muaj lub zog siab thiab kev ua haujlwm ntau lawm.
Nitrogen kuj ua haujlwm zoo li cov roj tiv thaiv, tab sis nws tsis tshua muaj thiab kim.
Raws li qhov kev pom zoo ntawm kev ua kom muaj qhov tshwj xeeb txaus thiab sib luag ntawm plasma arc xa tawm cov hmoov hlau, tag nrho cov dej ntws ua haujlwm thiab cov hmoov xa hluav taws xob yuav tsum raug txwv kom deb li deb tau, txhawm rau txo cov cua daj cua dub. Cov roj tiv thaiv yuav tsum muaj tag nrho txaus txaus kom ua tau zoo. Vim tias cov hmoov txhuas ntawm cov plasma arc surfacing yog feem ntau nws tus kheej-fusible, tsis muaj cov roj tiv thaiv tsis tuaj yeem muaj kev cuam tshuam loj rau qhov zoo ntawm qhov chaw, tab sis lub nozzle yog yooj yim heev uas yuav nchuav tawm ntawm lub pas dej molten hlau xuab zeb qias neeg.
Lub finer particle loj faib ntawm alloy hmoov rau surfacing, qhov yooj yim nws yog yaj, tab sis hmoov zoo heev yog nyuaj mus cuag cov hmoov.
Cov hmoov tuab heev tsis yooj yim rau yaj, tab sis kuj yooj yim ya tawm ntawm qhov chaw nto, kom cov hmoov poob.
Qhov loj me me yog 0.06 txog 0.112mm (120 txog 230 mesh / ft).
Txhawm rau kom tsis txhob muaj cov hmoov melting nyob rau hauv lub nozzle uas tshwm sim nyob rau hauv plugging tej yam kev mob, nyob rau hauv Tuam Tshoj kuj siv zoo hmoov (40-120 mesh / ft) surfacing.