Valve sealing nto sib tsoo txoj kev thiab sib tsoo cov cuab yeej cov khoom xav tau valve haum rau kev ua haujlwm kub thiab cov khoom tseem ceeb xaiv

Valve sealing nto sib tsoo txoj kev thiab sib tsoo cov cuab yeej cov khoom xav tau valve haum rau kev ua haujlwm kub thiab cov khoom tseem ceeb xaiv

Valve sealing nto yog muab faib ua ob hom dav hlau thiab conical sealing nto, uas yuav tsum yog hauv av hauv valve manufacturing. Kev sib tsoo ntawm qhov sib tsoo ntawm qhov chaw yog ua los ntawm kev sib tsoo yooj yim nkaus xwb. Los ntawm txhais tes sib tsoo feem ntau yog siv cov txheej txheem ntub dej, txhawm rau txhawm rau ua haujlwm abrasive, thiab tas li ntxiv cov kev ua haujlwm tsis muaj abrasive, yog li kom tau txais kev sib tsoo siab dua. Rau sealing nto uas yuav tsum tau tshwj xeeb tshaj yog high precision thiab tiav, tej zaum ib tug pressed xuab zeb phaj yog siv rau qhuav sib tsoo.
Cov kev xav tau rau cov cuab yeej siv
Nyob rau hauv cov txheej txheem sib tsoo, muaj ob qhov yuav tsum tau ua rau cov khoom siv ntawm cov cuab yeej sib tsoo: ib qho yog tias cov khoom ntawm cov cuab yeej sib tsoo yuav tsum tau yooj yim embedded rau hauv cov nplej abrasive; Qhov thib ob, cov khoom siv sib tsoo yuav tsum muaj peev xwm tswj tau cov duab geometric qhov tseeb ntawm cov cuab yeej sib tsoo rau lub sijhawm ntev.
Txhawm rau kom cov khoom abrasive tau yooj yim embedded, cov khoom siv sib tsoo yuav tsum softer dua li cov khoom siv ua haujlwm. Tab sis kuj tsis dhau mos, txwv tsis pub cov abrasive yuav feem ntau los yog tag nrho cov embedded thiab txo los yog poob tej nyhuv; Thiab cov khoom siv loj heev yuav ua rau cov cuab yeej sib tsoo hnav sai dua. Txhawm rau tiv thaiv cov cuab yeej sib tsoo los ntawm kev poob nws qhov geometric precision vim hnav nrawm, cov khoom siv sib tsoo yuav tsum muaj kev hnav zoo, thiab nws lub koom haum yuav tsum zoo ib yam. Kev hnav cov ntaub ntawv nrog cov qauv zoo ib yam kuj zoo ib yam, uas yog qhov muaj txiaj ntsig zoo los tswj cov geometric precision ntawm lub cuab yeej.
Thaum sib tsoo valve sealing nto, cov khoom siv sib tsoo yog siv los siv grey cam khwb cia hlau. Grey cam khwb cia hlau sib tsoo cov cuab yeej yog tsim rau kev sib tsoo sealing nto ntawm ntau yam ntaub ntawv hlau, nws tuaj yeem tau txais kev sib tsoo zoo dua thiab ua haujlwm ntau dua. Lub sealing nto ntawm kev sib tsoo cam khwb cia hlau, tooj liab thiab austenitic stainless hlau feem ntau yog ua los ntawm grey cam khwb cia hlau ntawm HB120-160. Grey cam khwb cia hlau HB150-190 feem ntau yog siv rau lub sealing nto ntawm kev sib tsoo nyuaj alloy thiab quenched steel, thiab feem ntau siv grey cam khwb cia hlau qib yog HT150 thiab HT1200.
Valve sealing nto sib tsoo txoj kev
Valve sealing nto yog muab faib ua ob hom dav hlau thiab conical sealing nto, uas yuav tsum yog hauv av hauv valve manufacturing.
Valve sealing nto sib tsoo txoj kev muaj ob hom kev sib tsoo thiab kev sib tsoo tshuab.
(1) Kev sib tsoo ntawm lub valve sealing nto
Kev sib tsoo ntawm qhov sib tsoo ntawm qhov chaw yog ua los ntawm kev sib tsoo yooj yim nkaus xwb. Los ntawm txhais tes sib tsoo feem ntau yog siv cov txheej txheem ntub dej, txhawm rau txhawm rau ua haujlwm abrasive, thiab tas li ntxiv cov kev ua haujlwm tsis muaj abrasive, yog li kom tau txais kev sib tsoo siab dua. Rau sealing nto uas yuav tsum tau tshwj xeeb tshaj yog high precision thiab tiav, tej zaum ib tug pressed xuab zeb phaj yog siv rau qhuav sib tsoo.
① Kev ceev sib tsoo ntawm lub dav hlau sealing ntawm lub cev valve. Lub valve lub cev foob dav hlau nyob rau hauv lub valve lub cev kab noj hniav, sib tsoo yog nyuaj. Feem ntau, cov cuab yeej sib tsoo zoo li lub ntsej muag nrog lub qhov square yog siv, uas tau muab tso rau ntawm qhov chaw sib khi ntawm cov kab noj hniav, thiab tom qab ntawd siv lub rooj ntev ntev nrog lub taub hau square yog siv los tsav cov kev sib tsoo rau kev sib tsoo. Muaj ib tug cylindrical tus thawj coj los yog phau ntawv gasket ntawm lub phaj sib tsoo los tiv thaiv cov cuab yeej sib tsoo tawm ntawm lub nplhaib sealing nto ib nrab thaum lub sij hawm sib tsoo thiab ua rau kev sib tsoo tsis sib xws. Daim duab 8-6-5 qhia daim duab qhia kev sib tsoo ntawm lub VALVE lub cev ntawm lub rooj vag valve thiab lub ntiaj teb valve.
Daim duab 8. Kev sib tsoo ntawm lub cev dav hlau 1 6 5
Ua ntej sib tsoo nyob rau hauv lub sealing dav hlau ntawm lub valve lub cev, lub ntsej muag ua hauj lwm ntawm lub sib tsoo lub cuab tam yuav tsum tau muab so nrog kerosene los yog roj av, thiab lub ya ntug thiab burr ntawm lub sealing nto ntawm lub valve lub cev yuav tsum tau muab tshem tawm, thiab ces coated nrog ib tug txheej. ntawm abrasive rau ntawm qhov chaw sealing. Pestle rau hauv lub cev kab noj hniav, kom ua tib zoo haum rau ntawm qhov chaw sealing, thiab tom qab ntawd siv ib tug ntev kov los ua cov pestle phaj rau qhov zoo thiab qhov tsis zoo.
Tig lub zog. Tig clockwise 180 °, counterclockwise 90 °, thiab lwm yam. Feem ntau, tom qab tig ntau tshaj kaum lub sij hawm, cov khoom abrasive nyob rau hauv tus neeg sawv cev abrasive tau blunted, yog li cov phaj sib tsoo yuav tsum tau nqa ntau zaus los ntxiv cov tshuaj abrasive tshiab.
Kev sib tsoo siab yuav tsum tsis sib xws thiab yuav tsum tsis txhob loj dhau. Kev tshawb nrhiav ntxhib tuaj yeem loj: kev tshawb fawb zoo yuav tsum me me. Kev ceev faj yuav tsum tau them tsis txhob siv lub siab thiab ua kom cov cuab yeej sib tsoo ib nrab ntawm lub dav hlau sealing. Tom qab sib tsoo rau ib lub sij hawm, los xyuas qhov roughness ntawm lub workpiece. Lub sijhawm no, koj tuaj yeem tshem tawm cov pestle, so lub sealing nto nrog kerosene los yog roj av, thiab maj mam muab cov disc-zoo li lub phaj tiaj tiaj rau ntawm lub sealing nto thiab maj mam rub los ntawm tes. Tom qab tshem tawm lub phaj tiaj tus, tiv tauj cov cim ntawm lub sealing nto tuaj yeem pom. Thaum lub nplhaib foob nto pom kev sib cuag sib npaug, thiab qhov sib piv ntawm radial sib cuag dav mus rau qhov dav sealing nto (uas yog, sealing nto thiab cov phaj ntsuas ntawm qhov coincidence) ncav cuag tus nqi teev nyob rau hauv tus txheej txheem, roughness yuav ua tau. suav tias tsim nyog.
② Kev sib tsoo ntawm rooj vag phaj thiab valve disc foob dav hlau. Lub foob dav hlau ntawm lub rooj vag, disc thiab lub rooj zaum tuaj yeem ua manually hauv av siv lub phaj sib tsoo. Ua ntej ua haujlwm, lub phaj huv huv yog sib npaug nrog txheej txheej ntawm abrasive, thiab lub workpiece txuas nrog lub phaj thiab tuaj yeem tig thiab txav mus rau hauv txoj kab ncaj nraim los ntawm tes, raws li qhia hauv daim duab 8-6-6, lossis hauv daim duab 8 zog. Kev sib tsoo kev ua tau zoo tuaj yeem txhim kho vim tias kev sib tsoo cov kev taw qhia tau hloov tas li thiab cov khoom abrasive yog sib tsoo hauv cov kev taw qhia tshiab.
Daim duab 8. Kev tuav kev sib tsoo ntawm lub sealing nto ntawm lub rooj vag 6-6
Txhawm rau kom tsis txhob hnav tsis sib xws ntawm cov phaj sib tsoo, tsis txhob txhuam hauv nruab nrab ntawm lub phaj, tab sis yuav tsum tau hloov tas li ntawm qhov chaw ntawm lub phaj, txwv tsis pub lub phaj sib tsoo yuav poob sai sai.
Lub DISC thiab LUB VALVE lub rooj zaum qhuav wedge zoo, sealing dav hlau ntawm lub voj voog ntawm qhov hnyav yog qhov tsis sib xws, kev sib tsoo yuav tsum nyob rau hauv nws nyias kawg (tseem hu ua "lub taub hau me") ntxiv me ntsis loj dua, yog li ntawd lub annular sealing dav hlau siab uniform. , thiaj li tsis ua rau lub workpiece wedge Angle hloov.
Throttle valve disc sib tsoo yuav siv tau nrog lub qhov nplhaib disc sib tsoo cov cuab yeej, txoj kev sib tsoo thiab valve sealing nto yog tib yam.
Taper sealing nto tes sib tsoo. Kev sib tsoo lub ntsej muag sib khi yuav tsum tau siv lub tes tsho los yog lub tes tsho. TAPER NTAWM LUB PESTLE THIAB PESTLE SLEEVE yuav tsum sib haum mus rau lub taper ntawm lub VALVE lub cev sealing lub ntsej muag los yog disc sealing ntsej muag, feem. Yuav tsum muaj ib tug ntiav kauv zawj ntawm lub khob hliav qab ntawm lub sib tsoo pas nrig thiab lub tes tsho sib tsoo ntawm lub sib tsoo lub cev nqaij qaib thiab lub ntsaws rau khaws cov khoom abrasive tshaj. Thaum sib tsoo lub ntiaj teb valve lub cev, vim hais tias lub khob hliav qab sealing yog luv luv thiab tsis zoo stability, nws yog feem ntau ntxiv ib daim ntawv qhia ntawm lub flange nres nyob rau hauv lub valve lub cev kom lub sib tsoo pas nrig. Daim duab 8-6-7 qhia daim duab schematic ntawm phau ntawv sib tsoo ntawm conical sealing nto.
Daim duab 8-6-7 Tes sib tsoo ntawm conical sealing nto
Thaum sib tsoo lub conical sealing nto, thov ib txheej ntawm tus neeg sawv cev sib npaug ntawm cov cuab yeej sib tsoo, maj mam muab tso rau ntawm qhov chaw ua haujlwm, tom qab ntawd nias lub cuab yeej sib tsoo los ntawm tes thiab tig lub cuab yeej sib tsoo: tom qab 3 mus rau 4 lub lis piam ntawm kev sib hloov. , cov cuab yeej sib tsoo tuaj yeem rub tawm los hloov txoj haujlwm ncig ua ntej sib tsoo. Abrasives yuav tsum tau ntxiv ntau zaus thaum lub sij hawm sib tsoo.
Lub taper ntawm kev sib tsoo qws ntawm kev sib tsoo lub cev nqaij qaib thiab lub tes tsho sib tsoo ntawm cov hlua sib tsoo yuav tsum zoo ib yam, txwv tsis pub nws yuav yooj yim rau xau nruab nrab ntawm qhov sib tsoo ntawm qhov sib tsoo tom qab sib tsoo.
Ib qho ntawm cov kev xav tseem ceeb hauv kev tsim valve thiab xaiv cov khoom siv yog qhov ua haujlwm kub ntawm lub valve. Txhawm rau kom tus qauv tsim nyog rau kev ua haujlwm kub ntawm cov khoom tseem ceeb ntawm lub valve, qhov tsim nyog ua haujlwm kub thiab cov kev xav tau ntawm cov khoom tseem ceeb ntawm lub valve yog teev los ntawm cov khoom siv ntawm ntau hom hlau thiab No. kev tshuaj xyuas cov khoom siv valve. Tsis tas li ntawd, los ntawm cov yam ntxwv ntawm kev tswj hwm kev lag luam, kev tswj hwm kev tsim khoom thiab kev yuav khoom, cov khoom siv valve nrog cov txheej txheem tsim nyog tshaj plaws raug xaiv.
1 lub ntsiab lus
Ib qho ntawm cov kev xav tseem ceeb hauv kev tsim valve thiab xaiv cov khoom siv yog lub valve ua haujlwm kub. Txhawm rau kom tus qauv tsim nyog rau kev ua haujlwm kub ntawm cov khoom tseem ceeb ntawm lub valve, qhov tsim nyog ua haujlwm kub thiab cov kev xav tau ntawm cov khoom tseem ceeb ntawm lub valve yog teev los ntawm cov khoom siv ntawm ntau hom hlau thiab No. kev tshuaj xyuas cov khoom siv valve. Tsis tas li ntawd, los ntawm cov yam ntxwv ntawm kev tswj hwm kev lag luam, kev tswj hwm kev tsim khoom thiab kev yuav khoom, cov khoom siv valve nrog cov txheej txheem tsim nyog tshaj plaws raug xaiv.
2.1 ** kub valve khoom
** kub valve [-254 (kua hydrogen) ~ -101 ℃ (ethylene)] cov ntaub ntawv tseem ceeb yuav tsum xaiv lub ntsej muag centered cubic lattice austenitic stainless hlau, tooj liab alloy los yog txhuas alloy, nws tsis tshua muaj kub mechanical zog tom qab kev kho cua sov, tshwj xeeb tshaj yog tsis tshua muaj kub. cuam ​​​​tshuam toughness yuav tsum tau raws li qhov yuav tsum tau ntawm tus qauv.
Cov nram qab no austenitic stainless hlau tuaj yeem siv los tsim cov khoom sov so. ASTM A351 CF8M, CF3M, CF8 thiab CF3, ASTM A182 F316, F316L, F304 thiab F304L, ASTM A433 316, 316L, 304, 304L thiab CF8D (tsim los ntawm Lanzhou Factory High Pressure code) ** Lub cev, npog, rooj vag lossis disc ntawm lub qhov sov so yuav tsum tau muab tso rau hauv cov kua nitrogen (-196 ℃) ua ntej ua tiav.