Valve sealing nto tsuag vuam alloy ua txheej txheem valve hais tias: tsis paub yuav ua li cas siv kuv

Valve sealing nto tsuag vuam alloy ua txheej txheem valve hais tias: tsis paub yuav ua li cas siv kuv

Valve sealing nto tshuaj tsuag vuam alloy ua txheej txheem muaj plaub kauj ruam:
Kev npaj ua ntej kev tsim kho, sab nraud ua ntej pov tseg, txau thiab txau tom qab pov tseg.
(a) Npaj tej yam
Kev lees paub ntawm cov ntaub ntawv, khoom, khoom siv thiab cov txheej txheem.
Ua ntej tus txheej txheem yuav tsum to taub qhov tseeb lub xeev thiab kev txawj ntse ntawm cov tshuaj tsuag workpiece thov ib nrab nres tsom xam,
1, lub thickness ntawm txheej. Raws li niaj zaus, tom qab txau yuav tsum tsis txhob siv lub tshuab ua haujlwm, rau txheej txheej yuav raug tshwj tseg rau kev ua haujlwm, tab sis kuj yuav tsum coj mus rau hauv tus account lub thermal expansion thiab contraction ntawm txau.
2, kev lees paub ntawm cov ntaub ntawv txheej. Raws li qhov kev xaiv yog tias cov ntaub ntawv txheej yuav tsum txaus siab rau cov ntaub ntawv ntawm cov khoom siv tshuaj tsuag, cov lus thov sib txawv, kev thov kev txawj thiab qhov chaw ntawm qhov teeb meem, cov txheej txheem sib xyaw ua ke thiab cov ntaub ntawv txheej txheej yog sib cais.
3, tej yam tsis xws luag: siab, hmoov loj, tshuaj tsuag phom thiab workpiece zog npaum li cas.
(2) ua ntej pov tseg ntawm lub workpiece sab nraud
Kev npaj sab nrauv yog txheej txheem nro ntawm kev sib koom ua ke ntawm lub zog ntawm cov txheej thiab cov matrix
1, concave txiav kev kho mob, muaj ib tug nkees txheej thiab ib co loj strain groove marks sab nraum, nyob rau hauv lub premise ntawm lub zog kam rau ua, muaj peev xwm nres txiav pov tseg, muab inclusive chaw rau thermal txau.
2, kev tshem tawm sab nraud, tshem tawm cov pa phem, xeb, xim txheej, kom sab nraud ntawm lub workpiece huv si, cov xim muaj kuab paug tuaj yeem raug tshem tawm nrog cov kuab tshuaj ntxuav, yog tias cov roj tau nkag mus rau cov ntaub ntawv matrix, tuaj yeem raug tshem tawm nrog cov nplaim hluav taws kub. , txheej xeb tuaj yeem nres cov kua qaub leaching, tshuab sib tsoo lossis xuab zeb blasting tshem tawm.
3, sab nraud coarsening, lub hom phiaj yog txhawm rau ntxiv dag zog rau kev sib koom ua ke ntawm txheej txheej thiab matrix, tshem tawm cov kev ntxhov siab, tsis tshua muaj kev siv sandblasting, qhib lub tank tav, rub cov plaub hau,
A: Cov xuab zeb blasting yog qhov tsawg tshaj plaws, cov xuab zeb tuaj yeem xaiv quartz xuab zeb, alumina xuab zeb, txias hlau xuab zeb, cov khoom siv xuab zeb kom ntse thiab muaj zog, yuav tsum huv thiab qhuav, cov npoo ntse thiab cov fab. Nws qhov loj me, qhov loj ntawm atmospheric siab, blasting Angle, ncua sijhawm, thiab lub sijhawm yuav tsum tau nres raws li qhov xwm txheej tshwj xeeb.
B: Slotted, ribbed, menyuam. Rau kev kho ntxhib ntawm cov ncej thiab lub tes tsho tshuab sab nraud, qhov zawj tuaj yeem siv los tshem tawm cov yoov tshaj cum ntawm lub tsheb, thiab qhov roughness ntawm qhov zawj thiab tav sab nraud yog tsim nyog rau RA6.312.5. Tsis muaj coolant thiab moistening tus neeg sawv cev yog ntxiv nyob rau hauv cov txheej txheem ua nrog rau cov rib workpiece ntawm lub tank tsheb, uas yuav dov tus qauv sab nraud, tab sis tiv thaiv cov ces kaum ntse.
C: Lub workpiece nrog hardness ntau dua tuaj yeem nres EDM daim duab thiab coarsening. Txawm li cas los xij, nyias txheej workpiece yuav tsum tau siv nrog ceev faj. Txoj kev EDM hairpulling txoj kev siv cov nickel hlau zoo los yog txhuas hlau ua cov electrode. Raws li kev cuam tshuam ntawm arc, cov ntaub ntawv electrode thiab sab nraud ntawm cov matrix yog ib feem fused, uas ua rau sab nraud ntxhib. Tom qab cov tsos ntawm cov tshiab sab nraud coarsening, yuav tsum tiv thaiv kom huv si, yog nruj me ntsis txwv tsis pub kov, khaws cia nyob rau hauv ib tug huv si, qhuav qhov teeb meem, coarsening sai li sai tau tom qab tshuaj tsuag, li niaj zaus txau lub sij hawm tsis ncua ob teev.
4. Npog ntawm qhov tsis yog tshuaj tsuag
Txau sab nraud nyob ze ntawm cov tshuaj tsuag, npog yuav tsum muaj peev xwm siv tau cov ntaub iav kub-resistant los yog asbestos thiab thaiv, xav tau raws li lub tshuab hloov teb thaum lub clamp npog, tab sis yog yuav tsum tau them nyiaj ntau rau cov ntaub ntawv fixture yuav tsum muaj qee lub zog. , thiab qhov ntawd txhais tau hais tias tsawg daim ntawv thov ntawm cov melting point alloy tsawg, tsam purification txheej, txoj kev tseem ceeb nyob rau sab nraud, los cuam tshuam nrog matrix roj qhov tsis tso cai rau ib feem ntawm cov tshuaj tsuag, xws li tuaj yeem thaiv nrog graphite block lossis chalk ca los yog me ntsis. siab dua sab nraud. Tom qab txau kom tshem tawm, xyuam xim rau kev puas tsuaj rau cov txheej, cov npoo thiab cov ces kaum kom blunt.
(3) Txau
Preheat rau 100 mus rau 200 degrees Celsius ua ntej tshuaj tsuag kom txo qhov kub qhov sib txawv. Cov me me tuaj yeem preheated hauv qhov cub.
Txau ua ke txheej txheej ntawm av tswj ntawm kaum xaim mus rau nees nkaum xaim, hmoov nrog cov nplaim nruab nrab lossis sab qaum teb carbonized, tom qab xa ib lub rooj sib tham ntawm cov pob hluav taws kub liab, thiab cov pa luam yeeb xiav thiab liab. Yog tias qhov kawg yog xim dawb ci, qhia meej tias muaj cov cim qhia ntawm kev raug mob yuav tsum tau kho cov nplaim taws lossis txo cov hmoov av, yog tias tsaus liab, qhia meej tias tsis muaj melting, nce nplaim taws, tswj cov hmoov av thiab ntws tus nqi. Yog tias qhov ntau npaum ntawm cov nplaim taws thiab cov hmoov zoo, cov hmoov loj tuaj yeem hloov pauv nrog cov ntsiab lus npib tsib xee, thiab cov hmoov uas muaj npib tsib xee tuaj yeem hloov mus rau hauv cov hmoov ntxhib lossis hmoov nrog ntau cov nickel. Cov tshuaj tsuag yuav tsum yog perpendicular rau cov tshuaj tsuag sab nraud, lub caij nyoog ntawm kev tswj ntawm 180200MM.
Txau cov txheej txheem: tom qab txau cov txheej txheem sib koom ua ke kom tshem cov hmoov tshauv thiab oxide zaj duab xis nrog cov txhuam hlau, daim ntawv thov cov hmoov hlau nrog cov nplaim hluav taws kub sab qaum teb, daim ntawv thov ntawm cov hmoov tooj liab yuav tsum siv cov nplaim hluav taws xob nruab nrab, thiab siv cov hmoov nickel ntawm ob. , nyob ntawm nws tus kheej thiab kev hloov. Kev tswj lub sijhawm nruab nrab ntawm 180200MM, lub sijhawm txau yog qhov loj heev, qhov kub thiab txias melting yog qis, tus nqi qeeb thiab lub zog tsis txaus, qhov sib koom ua ke muaj zog tsawg, cov qauv yog xoob, lub sijhawm txau yog me me, cov hmoov tsis permeable. , qhov cuam tshuam quab yuam yog muaj zog rebound, cov nyhuv tsub zuj zuj yog tsawg, lub zog sib koom ua ke yog tsawg. Tsiv tus nqi, ua tsaug rau 70150MM / S, yuav tsum tau ntsuas los ntawm tus pas ntsuas kub, hla 250 degrees yuav tsum tsis txhob txau.
Tom qab txau cov khoom ua haujlwm txias: lub sijhawm txias, qhov nro yog los tiv thaiv cov txheej tev thiab deformation ntawm lub workpiece. Tshwj xeeb tshaj yog rau qee cov duab tshwj xeeb, kev tiv thaiv kev tiv thaiv yuav tsum tau ua, xws li kev ua kom txias txias ntawm lub axis ntev ntawm lub tshuab, los yog dai nws ntsug kom txias.
(4) Tshem tawm tom qab txau
Sealing qhov, tshuab ua thiab lwm yam txheej txheem.
Txheej nyiaj li ntawm kaum tsib feem pua ​​​​ntawm qhov ntim, porosity thiab pore xav txog qee qhov kev sib txuas nrog nws lub tshuab zoo heev ntawm kev sib txhuam, tuaj yeem ua rau lub tshuab ua kom zoo tom qab cov roj tsuag, daim ntawv thov ntawm pore reservoir yog qhov zoo rau du, tab sis cuam tshuam nrog lub tshuab hydraulic, pore thiab yooj yim to, nrog tom qab txau, yuav tsum siv lub qhov sealing tus neeg saib xyuas nres qhov sealing kev kho mob.
Thov rau sealing tus neeg saib xyuas: zoo permeability, tshuaj tiv thaiv, tsis muaj kev sib cais, tsis muaj metamorphosis. Kev ua haujlwm ruaj khov ntawm qhov kub thiab txias, tuaj yeem ntxiv dag zog rau txheej txheej, tsis tshua muaj siv quav ciab, epoxy, phenolic thiab lwm yam.
Thaum qhov tseeb qhov tseeb tom qab txau thiab qhov roughness ntawm sab nraud tsis tuaj yeem txaus siab rau qhov kev thov, nws yog ib qho tsim nyog yuav tsum tsis txhob siv lub tshuab ua haujlwm, tuaj yeem siv tig los yog sib tsoo.
Valve tau hais tias: Kuv tsis paub yuav ua li cas kuv thiaj li siv tau kuv qhov kev txiav tawm ntawm lub valve kom tsawg li tsawg tau, qhov muag foob valve to tsawg, txiav tawm cov nyhuv yog qhov zoo, tab sis tsis hnav-tiv taus, tsis muaj kev ntseeg siab.
Qhov qis dua qhov kev xav tau ntawm qhov kev txiav tawm valve, qhov zoo dua qhov to ntawm qhov muag foob valve yog qhov tsawg, qhov kev txiav tawm yog qhov zoo, tab sis tsis hnav-tiv taus, tsis muaj kev ntseeg siab.
1. Vim li cas nws yooj yim rau oscillate thaum ob lub rooj zaum valve qhib me me?
Rau ib qho tseem ceeb, thaum nruab nrab yog ntws qhib hom, lub valve stability yog zoo; Thaum qhov nruab nrab ntws kaw, qhov ruaj khov ntawm lub valve tsis zoo. Lub rooj zaum ob lub rooj zaum muaj ob lub spool, qhov qis qis yog nyob rau hauv qhov ntws kaw, lub spool sab sauv yog nyob rau hauv lub ntws qhib, yog li, nyob rau hauv lub me me qhib ua hauj lwm, lub ntws kaw hom spool yog ib qho yooj yim ua rau lub vibration ntawm lub valve. yog vim li cas vim li cas ob lub rooj zaum valve tsis tuaj yeem siv rau kev qhib me me.
2. Vim li cas ho tsis tuaj yeem siv ob lub foob valve los ua qhov txiav tawm?
Qhov kom zoo dua ntawm ob lub rooj vag valve spool yog tias lub zog sib npaug ntawm cov qauv tso cai rau qhov sib txawv ntawm qhov sib txawv loj, thaum nws qhov tsis zoo yog tias ob qhov chaw sib khi tsis tuaj yeem sib txuas tau zoo tib lub sijhawm, ua rau muaj qhov xau loj. Yog tias nws yog siv dag zog thiab yuam kom txiav tawm lub ntees, pom tseeb tias cov nyhuv tsis zoo, txawm tias nws tau ua ntau yam kev txhim kho (xws li ob lub foob lub tes tsho valve), nws tsis tsim nyog.
3, Dab tsi ncaj stroke tswj valve thaiv kev ua haujlwm tsis zoo, Lub kaum sab xis stroke valve thaiv kev ua haujlwm zoo?
Ncaj stroke valve spool yog ntsug throttling, thiab qhov nruab nrab yog kab rov tav ntws mus rau hauv thiab tawm ntawm lub valve chamber flow channel yuav tsum tig rov qab, kom lub valve ntws txoj kev yuav nyuaj heev (zoo li inverted "S" hom). Nyob rau hauv txoj kev no, muaj ntau qhov chaw tuag, uas muab qhov chaw rau nag lossis daus ntawm qhov nruab nrab, thiab nyob rau lub sijhawm ntev, ua rau muaj kev thaiv. Kev taw qhia ntawm lub kaum sab xis stroke valve throttling yog kab rov tav kev taw qhia, qhov nruab nrab ntws hauv thiab tawm kab rov tav, thiab nws yooj yim tshem tawm qhov nruab nrab tsis huv. Nyob rau tib lub sijhawm, txoj kev khiav yog yooj yim, thiab qhov nruab nrab nag lossis daus qhov chaw me me, yog li lub kaum sab xis stroke valve muaj kev thaiv zoo.
4. Vim li cas lub qia ntawm qhov ncaj stroke tswj valve nyias?
Nws suav nrog lub hauv paus ntsiab lus yooj yim: kev sib txhuam loj zawv zawg thiab kev sib txhuam me me. Ncaj stroke valve qia nce thiab nqis txav, ntim me ntsis nias me ntsis, nws yuav muab lub valve qia qhwv nruj heev, tsim qhov sib txawv loj. Vim li no, lub qia valve yog tsim los me me, thiab cov khoom ntim feem ntau yog siv nrog me me coefficient ntawm kev sib txhuam PTFE packing, thiaj li yuav txo tau qhov backdifference, tab sis qhov teeb meem yog tias lub valve qia yog nyias, yooj yim rau khoov. , thiab lub neej ntim khoom luv luv. Txhawm rau daws qhov teeb meem no, txoj hauv kev zoo dua yog siv lub voj voog mus ncig, uas yog lub kaum sab xis stroke hom tswj lub valve, nws lub valve qia yog 2 ~ 3 zaug tuab dua li cov kab ncaj nraim valve qia, thiab kev xaiv ntawm lub neej ntev graphite muab tub lim. , qia tawv yog zoo, ntim lub neej ntev, kev sib txhuam torque me me, me me rov qab sib txawv.
5. Vim li cas qhov kev txiav tawm siab sib txawv ntawm lub kaum sab xis stroke valve loj?
Angular stroke hom valve txiav tawm qhov sib txawv ntawm qhov siab yog qhov loj, vim tias qhov nruab nrab ntawm lub spool lossis valve phaj resultant quab yuam ntawm kev sib hloov ncej torque tsawg heev, yog li ntawd, nws tuaj yeem tiv taus qhov sib txawv loj.
6. Vim li cas qhov kev pab cuam lub neej ntawm cov dej desalting nruab nrab lined nrog roj hmab npauj npaim valve thiab fluorine lined diaphragm valve luv?
Desalting dej nruab nrab muaj tsawg concentration ntawm acid los yog alkali, lawv muaj ib tug ntau dua corrosion rau roj hmab. Lub corrosion ntawm roj hmab yog yam ntxwv ntawm expansion, laus thiab tsis muaj zog. Kev siv cov nyhuv ntawm npauj npaim valve thiab diaphragm valve lined nrog roj hmab tsis zoo. Lub essence yog tias roj hmab tsis yog corrosion resistant. Tom qab cov roj hmab hauv ob sab phlu diaphragm valve tau txhim kho kom muaj kev tiv thaiv corrosion ntawm fluorine lined diaphragm valve, tab sis lub diaphragm ntawm fluorine lined diaphragm valve tsis tuaj yeem sawv ntsug thiab nqis folding thiab tawg, ua rau kev puas tsuaj, lub neej ntawm lub valve yog luv dua. Tam sim no txoj kev zoo dua yog siv dej los kho lub pob valve, nws tuaj yeem siv tau 5 mus rau 8 xyoo.
7. Vim li cas thiaj li yuav tsum tau txiav tawm lub valve kom nruj kom deb li deb tau?
Qhov qis dua qhov kev xav tau ntawm qhov kev txiav tawm valve, qhov zoo dua qhov to ntawm qhov muag foob valve yog qhov tsawg, qhov kev txiav tawm yog qhov zoo, tab sis tsis hnav-tiv taus, tsis muaj kev ntseeg siab. Los ntawm cov xau thiab me me, sealing thiab txhim khu kev qha ob txheej txheem, mos foob txiav tawm yog zoo dua li tawv foob txiav tawm. Xws li tag nrho-function ultra-light regulating valve, kaw thiab stacked nrog hnav-resistant alloy tiv thaiv, muaj kev ntseeg siab, leakage npaum li cas ntawm 10 ~ 7, muaj peev xwm ua tau raws li qhov yuav tsum tau ntawm lub cut-off valve.
8. Vim li cas lub tes tsho valve hloov lub valve ib leeg thiab ob lub rooj zaum tab sis tsis ua tiav nws lub hom phiaj?
Lub tes tsho valve, uas tau tawm hauv xyoo 1960, tau siv dav hauv tsev thiab txawv teb chaws hauv xyoo 1970, thiab lub tes tsho valve hauv cov nroj tsuag petrochemical tau qhia hauv xyoo 1980 suav txog qhov loj dua. Lub sijhawm ntawd, ntau tus neeg ntseeg tias lub tes tsho valve tuaj yeem hloov lub rooj zaum ib leeg thiab ob lub rooj zaum thiab dhau los ua lub cim thib ob ntawm cov khoom. Niaj hnub no, qhov no tsis yog li ntawd, ib lub rooj zaum valve, ob lub rooj zaum valve, lub tes tsho valve yog siv sib npaug. Qhov no yog vim hais tias lub tes tsho valve tsuas yog txhim kho daim ntawv throttling, kev ruaj ntseg thiab kev saib xyuas zoo dua li ib lub rooj zaum valve, tab sis nws qhov hnyav, thaiv thiab qhov taw qhia tawm yog ua raws li ib leeg thiab ob lub rooj zaum valve, yuav ua li cas hloov lub rooj zaum ib leeg thiab ob lub rooj zaum valve. ? Yog li, nws yuav tsum tau muab faib.
9. Vim li cas qhov kev xaiv tseem ceeb dua li kev suav?
Kev suav thiab xaiv piv, kev xaiv yog qhov tseem ceeb dua, ntau qhov nyuaj. Vim hais tias qhov kev suav tsuas yog ib qho yooj yim kev xam cov mis, nws tsis yog nyob ntawm qhov tseeb ntawm cov mis nws tus kheej, tab sis nyob ntawm qhov tseeb ntawm cov txheej txheem muab. Kev xaiv muaj cov ntsiab lus ntau dua, tsis muaj kev saib xyuas me ntsis, yuav ua rau kev xaiv tsis raug, tsis yog tsuas yog ua rau cov neeg siv khoom pov tseg, cov khoom siv, kev siv nyiaj txiag, thiab kev siv cov txiaj ntsig tsis zoo, coj ntau yam teeb meem siv, xws li kev ntseeg siab. , lub neej, kev ua haujlwm zoo, thiab lwm yam.