Dab tsi yog forged valve?
Lub valve yog ib qho tseem ceeb ntawm kev tswj cov dej hauv ntau qhov kev lag luam xws li roj thiab roj, tsim hluav taws xob, thiab kev ua tshuaj lom neeg. Nws tswj cov dej ntws los yog roj av los ntawm cov kav dej, twj, lossis lwm yam khoom siv. Lub cev lub cev, qia, disc, lub rooj zaum, thiab lub foob yog qhov tseem ceeb uas txiav txim siab lub valve qhov kev ua tau zoo thiab kev ntseeg tau. Cov ntaub ntawv zoo li cam khwb cia hlau, bronze, tooj dag, carbon hlau, stainless hlau, thiab kab txawv alloys feem ntau yog siv los tsim cov li qub. Txawm li cas los xij, thaum nws los txog rau cov ntawv thov uas xav tau kev kub siab, kub kub, lossis kev pabcuam corrosive, forged li qub yog qhov kev xaiv. Yog li, dab tsi yog forged valve, thiab vim li cas nws thiaj li tsim nyog?
Dab tsi yog forging, thiab nws txawv li cas ntawm casting?
Forging yog cov txheej txheem tsim khoom uas muaj cov hlau shaping los ntawm kev siv cov cua sov thiab siab. Nws tuaj yeem ua los ntawm hammering, nias, lossis dov cov hlau ntawm ob qhov tuag, ua rau cov yas deformation thiab rov kho dua ntawm nws cov qauv sab hauv. Cov txheej txheem no ua rau cov khoom kawg uas tau txhim kho cov khoom siv zoo xws li lub zog siab dua, ductility, toughness, thiab cuam tshuam tsis zoo dua li nws daim ntawv qub. Forging feem ntau yog siv los tsim cov khoom tseem ceeb xws li lub zog, ncej, bearings, thiab li qub uas xav tau kev ua haujlwm tshwj xeeb hauv cov xwm txheej hnyav.
Casting, ntawm qhov tod tes, yog txheej txheem uas molten hlau yog poured rau hauv pwm thiab tso cai rau txias thiab solidify. Cov txheej txheem no ua rau cov khoom kawg uas muaj daim ntawv zoo li tus tab sis nrog cov khoom siv tsis zoo tshaj nws daim ntawv qub. Casting tuaj yeem ua tiav siv ntau txoj hauv kev, suav nrog xuab zeb casting, peev casting, tuag casting, thiab centrifugal casting. Castings feem ntau yog siv los tsim cov khoom uas xav tau cov duab nyuaj lossis qhov loj me tab sis tsis xav tau cov khoom siv tshuab siab.
Dab tsi yog qhov zoo ntawm kev siv forged li qub?
Forged li qub muaj ntau yam zoo dua li cam khwb cia, tshwj xeeb tshaj yog nyob rau hauv high-pressure, high-temperature, thiab corrosive daim ntaub ntawv. Qee qhov txiaj ntsig suav nrog:
- Ntau zog thiab toughness: Forged li qub muaj zog dua thiab muaj peev xwm tiv taus kev ntxhov siab thiab cuam tshuam ntau dua li cov cam khwb cia. Lawv kuj muaj kev tiv thaiv zoo dua rau thermal qaug zog thiab deformation.
- Kev txhim kho ductility thiab weldability: Forged li qub muaj cov qauv zoo dua qub thiab muaj qhov tsis xws luag tsawg dua li cov cam khwb cia, ua rau lawv ntau dua thiab yooj yim rau vuam. Lawv kuj muaj cov tshuaj zoo sib xws, uas txhim kho lawv cov kev tiv thaiv corrosion thiab yaig.
- Tighter tolerances thiab siab dua precision: Forging tuaj yeem tsim cov li qub nrog nruj dua qhov kam rau ua thiab siab dua saum npoo tiav dua li casting. Qhov no ua rau lawv txhim khu kev qha thiab yooj yim rau kev sib sau ua ke nrog lwm cov khoom hauv lub cev.
- Zoo dua traceability thiab kev tswj kom zoo: Forged li qub feem ntau traceable thiab muaj kev tswj zoo dua li cam khwb cia li qub. Qhov no yog vim tias forging cuam tshuam nrog cov txheej txheem tsawg dua thiab tuaj yeem soj ntsuam tau yooj yim dua li casting.
Dab tsi yog hom forged li qub?
Forged li qub tuaj hauv ntau hom thiab tsim, nyob ntawm lawv daim ntawv thov thiab kev ua haujlwm. Qee qhov feem ntau forged valve hom yog:
- Lub rooj vag li qub: Lub rooj vag li qub yog siv los tswj cov dej ntws los ntawm kev nce lossis txo lub rooj vag uas yog perpendicular mus rau kev khiav dej num. Lawv muaj qhov tsim qauv yooj yim thiab muaj zog thiab tuaj yeem ua haujlwm siab thiab ua haujlwm kub.
- Globe li qub: Globe li qub yog siv los tswj cov dej ntws los ntawm kev kho qhov chaw ntawm lub disc uas txav mus rau qhov kev taw qhia ntws. Lawv muaj kev tswj xyuas kom meej thiab meej dua li lub rooj vag li qub thiab tsim nyog rau kev pabcuam throttling.
- Kuaj li qub: Kos li qub yog siv los tiv thaiv cov dej ntws rov qab los ntawm kev tso cai ntws hauv ib qho kev taw qhia nkaus xwb. Lawv muaj cov qauv tsim yooj yim thiab feem ntau siv hauv cov kav dej kom tsis txhob rov qab los yog dej rauj.
- Pob li qub: Pob li qub yog siv los tswj cov dej ntws los ntawm kev tig lub pob nrog lub aperture uas sib haum nrog cov kev taw qhia ntws. Lawv muaj kev ua haujlwm sai thiab yooj yim thiab tsim nyog rau kev pabcuam siab thiab kub siab.
- Npauj npaim li qub: Npauj npaim li qub yog siv los tswj cov dej ntws los ntawm kev tig lub disc nrog tus npauj npaim profile uas txawv ntawm qhov chaw ntws. Lawv muaj cov qauv tsim compact thiab lub teeb yuag thiab tsim nyog rau qhov chaw nruj lossis kev pabcuam tsis tshua muaj siab.
Dab tsi yog qhov yuav tsum tau xav txog thaum xaiv forged li qub?
Xaiv txoj cai forged valve rau daim ntawv thov yuav tsum tau ua tib zoo xav txog ntau yam, suav nrog:
- Kev khiav hauj lwm tej yam kev mob: Lub siab, kub, ntws tus nqi, thiab cov kua muaj pes tsawg leeg yog ib qho tseem ceeb tsis tau txiav txim seb hom thiab cov khoom ntawm forged valve. Lub valve yuav tsum muaj peev xwm tiv taus qhov kev ua haujlwm thiab tsis ua haujlwm thaum lub sijhawm ua haujlwm.
- Kev sib txuas xaus: Hom kev sib txuas kawg, xws li flanged, threaded, lossis welded, yog qhov tseem ceeb rau xaiv txoj cai forged valve. Nws yuav tsum sib haum nrog cov kav dej thiab muab kev ruaj ntseg thiab tsis muaj kev sib koom ua ke.
- Valve loj thiab txaus muaj peev xwm: lub valve loj thiab txaus muaj peev xwm yuav tsum tau proportional rau tus nqi txaus thiab siab poob nyob rau hauv lub system. Oversizing los yog undersizing lub valve tuaj yeem ua rau tsis ruaj khov, cavitation, lossis kev poob siab ntau dhau.
- Valve hom thiab tsim: Lub valve hom thiab tsim yuav tsum ua raws li cov kev cai ntawm daim ntawv thov thiab muab qhov tsim nyog khiav tswj, kaw, lossis kev tswj hwm. Cov khoom siv valve thiab nto tiav yuav tsum tsim nyog rau cov kua dej sib xyaw thiab tiv thaiv corrosion los yog yaig.
- Kev tu thiab kho: qhov yooj yim ntawm kev saib xyuas thiab kho lub forged valve yuav tsum tau txiav txim siab, tshwj xeeb tshaj yog nyob rau hauv tej thaj chaw deb los yog muaj kev phom sij. Lub valve yuav tsum muaj cov khoom siv tau thiab hloov tau thiab yuav tsum muaj tsawg kawg nkaus downtime lossis cov cuab yeej tshwj xeeb rau kev pabcuam.
Xaus
Forged li qub yog cov khoom tseem ceeb ntawm kev tswj cov kua dej thiab muab cov khoom siv zoo tshaj plaws thiab kev ntseeg tau ntawm cov cam khwb cia li qub. Lawv yog siv nyob rau hauv ntau yam lag luam uas yuav tsum tau high-pressure, high-temperature, los yog corrosive kev pab cuam thiab tuaj nyob rau hauv ntau hom thiab tsim. Thaum xaiv lub forged valve, ntau yam yuav tsum tau txiav txim siab, suav nrog cov kev ua haujlwm, kev sib txuas kawg, qhov loj thiab ntws peev xwm, hom thiab tsim, thiab kev kho thiab kho. Los ntawm kev xaiv txoj cai forged valve, ib tus tuaj yeem ua kom muaj kev nyab xeeb, ua haujlwm tau zoo, thiab ua haujlwm raug nqi ntawm lawv cov kua dej.
