Tshuaj twj tso kua mis dynamic sealing roj hmab nplhaib
Cov Khoom Zoo
Cov duab zoo sib xws ntawm dynamic sealing rubber rings rau cov twj siv tshuaj muaj xws li O-shaped, V-shaped thiab di ncauj-puab. O-ring muaj cov qauv yooj yim thiab kev sib khi zoo. Nws tuaj yeem muab cov kev sib khi txhim khu kev qha nyob rau hauv cov xwm txheej zoo li qub thiab dynamic. Nws lub voj voog hla ntu ua rau nws yooj yim rau nruab thiab haum rau ntau yam sealing grooves. Lub V-ring yog tsim los ntawm ntau lub nplhaib sib khi thiab tuaj yeem tiv taus siab dua. Nws ua tau zoo nyob rau hauv high-pressure tej yam kev mob. Nws qhov tshwj xeeb V-zoo li tus qauv tuaj yeem tiv thaiv qhov nruab nrab los ntawm kev tawm ntawm sab siab mus rau sab qis. Nws feem ntau yog siv nyob rau hauv lub foob foob ntawm cov tshuaj twj tso kua mis uas tsis tshua muaj siab sealing yuav tsum tau. Lub nplhaib di ncauj muaj ib daim di ncauj tsim, uas haum rau lub sealing nto nruj nreem. Nws muaj qhov tseem ceeb ntawm ib txoj kev sib khi ntawm qhov nruab nrab, xws li tiv thaiv cov kua hauv cov twj tso kua mis los ntawm kev tawm. Nws feem ntau yog siv rau kev sib khi ntawm cov rotating shafts thiab tuaj yeem ua haujlwm ruaj khov nyob rau hauv cov xwm txheej nrog qee qhov axial reciprocating motion.
Cov khoom ua haujlwm tsis zoo
- Hardness: Feem ntau ntsuas los ntawm Shore hardness, uas txawv rau cov ntaub ntawv sib txawv thiab daim ntawv thov scenarios. Piv txwv li, qhov nyuaj ntawm lub nplhaib sealing ua los ntawm fluororubber feem ntau yog nyob nruab nrab ntawm 70 thiab 85 Ntug A, uas tuaj yeem ua kom zoo sealing haum thiab tiv taus qee yam kev ua haujlwm siab; Lub hardness ntau yam ntawm nitrile roj hmab yog dav, uas yuav ua tau 60 mus rau 90 Shore A, thiab yuav tsum tau kho raws li tej roj kuj thiab hnav kuj yuav tsum tau. Lub nplhaib roj hmab nrog lub zog me me tuaj yeem hloov kho kom zoo dua rau kev sib hloov thiab rov ua haujlwm ntawm lub twj tso kua mis ncej, kom ntseeg tau tias lub zog ntawm lub foob.
- Lub zog tensile: ntsuas lub peev xwm ntawm lub nplhaib roj hmab kom tiv taus lub zog tensile yam tsis muaj kev tawg. Piv txwv li, lub zog tensile ntawm fluororubber feem ntau yog nyob nruab nrab ntawm 10 thiab 20 MPa, thiab cov roj hmab perfluoroether tseem siab dua, mus txog 15 txog 25 MPa. Qhov no tso cai rau lawv kom muaj kev ncaj ncees ntawm cov qauv thiab muaj txiaj ntsig zoo hauv kev sib khi nyob rau sab nraud xws li tensile deformation thiab vibration thaum lub twj tso kua mis ua haujlwm. Lub zog tensile ntawm nitrile roj hmab feem ntau yog 8 mus rau 15 MPa, uas ua tau raws li qhov yuav tsum tau ua rau kev tiv thaiv kev ntxhov siab hauv cov khoom siv roj.
- Compression set: qhia txog qhov elastic rov qab muaj peev xwm ntawm lub nplhaib roj hmab nyob rau hauv lub sij hawm ntev compression. Lub compression txheej txheem ntawm cov twj tso kua mis zoo dynamic sealing roj hmab nplhaib yuav tsum tau tswj nyob rau hauv ib tug tsawg theem raws li cov qauv xeem tej yam kev mob (xws li nyob rau hauv ib tug tej yam siab ntawm ib tug tshwj xeeb kub thiab lub sij hawm). Piv txwv li, qhov compression txheej txheem ntawm fluororubber feem ntau yog tsawg dua 30% nyob rau hauv qhov kev sim ntawm 200 degree thiab 24 teev, uas txhais tau hais tias nws tuaj yeem rov qab sai sai rau nws lub xeev qub tom qab ua haujlwm ntev hauv qhov kub thiab txias. , tswj kev ua haujlwm zoo sealing, thiab xyuas kom tsis txhob muaj cov dej xau ntawm lub twj tso kua mis tshuaj.
Cov ntaub ntawv xaiv cov lus piav qhia
| Khoom npe | Qhov zoo | Qhov tsis zoo | Muaj cov xwm txheej | Qhov kub thiab txias |
| Nitrile roj hmab (NBR) | Zoo roj kuj, hnav tsis kam, siab tensile zog thiab hardness, zoo dej kuj | Cov huab cua tsis zoo, tsis tiv taus cov kuab tshuaj polar | Muaj feem xyuam rau roj av hydraulic roj, ethylene glycol hydraulic roj, roj lubricating roj, roj av, dej thiab lwm yam xov xwm | -40 degree - 120 degree |
| Fluororubber (Viton) | Zoo heev kub tsis kam, roj kuj thiab tshuaj corrosion kuj | Kev ua haujlwm tsis zoo thiab adhesion, tus nqi siab | Muaj feem xyuam rau qhov kub thiab txias, kub siab thiab corrosive media ib puag ncig, xws li acids, aliphatic hydrocarbons, aromatic hydrocarbons, tsiaj thiab zaub roj, thiab lwm yam. | -20 degree - 250 degree |
| Silicone roj hmab (SIL) | Cov cua kub zoo, ua haujlwm txias, tiv thaiv ozone thiab atmospheric aging kuj | Lub zog tensile tsis zoo dua li cov roj hmab zoo tib yam, tsis muaj roj resistant | Muaj feem xyuam rau cov khoom siv hauv tsev, qhov kub thiab txias ib puag ncig, thiab lwm yam. | -55 degree - 250 degree |
| Chloroprene roj hmab (CR) | Zoo tshav ntuj tiv thaiv, huab cua tsis kam, dilute acid kuj, silicone roj lubricant kuj | Yooj yim rau crystallize thiab harden ntawm qis kub | Muaj feem xyuam rau kev sib txuas cov kev sib txuas ntawm qhov chaw, tshav ntuj, ozone thiab ntau yam nplaim hluav taws thiab tshuaj tiv thaiv corrosion | Tsis muaj qhov tseeb ib qhov kub thiab txias |
| Polyurethane roj hmab (PU) | Zoo mechanical zog, zoo heev hnav tsis kam thiab siab siab kuj | Yooj yim rau hydrolyze ntawm qhov kub thiab txias | Siv nyob rau hauv kev kub siab thiab hnav-resistant sealing txuas | -45 degree - 90 degree |
Cov khoom faq
Q: Hauv qee yam tshuaj lom neeg tshaj tawm (xws li cov ntsiab lus sulfuric acid, muaj zog alkaline tov, thiab lwm yam), cov khoom siv ntawm cov twj tso kua mis dynamic foob roj hmab nplhaib muaj lub neej ntev tshaj plaws? Dab tsi yog qhov tshwj xeeb ntawm qhov nruab nrab concentration uas nws tuaj yeem zam tau?
- High concentration sulfuric acid: Nws raug nquahu kom siv fluororubber (VITON) cov ntsaws ruaj ruaj, uas muaj cov tshuaj tiv thaiv zoo heev thiab tuaj yeem tiv taus cov kua qaub sulfuric acid. Kev tiv thaiv corrosion ntawm fluororubber muab nws lub neej ntev kev pab cuam nyob rau hauv siab concentrations sulfuric acid, tab sis qhov tshwj xeeb tolerable nruab nrab concentration ntau yam yuav tsum tau txiav txim siab raws li cov qauv tshwj xeeb thiab kev tsim cov txheej txheem ntawm fluororubber, thiab qhov kam rau siab concentration ntau yog nyob ib ncig ntawm 90. %.
- Muaj zog alkali tov: Rau cov tshuaj alkali muaj zog, fluororubber kuj yog ib qho kev xaiv zoo, thiab nws cov alkali tsis kam yog qhov zoo. Tsis tas li ntawd, cov khoom siv polytetrafluoroethylene (PTFE) kuj muaj cov alkali tsis kam thiab tsim nyog rau qhov muaj zog alkali tov ib puag ncig.
Q: Rau cov twj siv tshuaj ua haujlwm nyob rau hauv qhov kub thiab txias (xws li kub 250 degree, siab 5MPa), qhov zoo li cas thiab cov khoom siv ntawm sealing rubber rings raug pom zoo los xyuas kom meej tias ob qho tib si sealing yuav tsum tau ua thiab kev ua haujlwm ruaj khov mus ntev yog lav?
- Kev xaiv zoo: V-puab lossis di ncauj-puab sealing rubber rings raug pom zoo vim tias lawv tuaj yeem muab cov nyhuv sealing zoo dua thiab ruaj khov nyob rau hauv qhov kub thiab txias.
- Kev xaiv cov khoom siv: Fluororubber (VITON) yog qhov kev xaiv zoo tshaj plaws, nrog rau qhov kub thiab txias thiab tuaj yeem siv tau ntev ntawm qhov kub ntawm 250 degree. Nyob rau tib lub sijhawm, fluororubber kuj muaj lub siab zoo thiab tuaj yeem ua tau raws li qhov xav tau ntawm 5MPa.
Q: Thaum twg lub twj tso kua mis tshuaj nquag pib thiab nres thiab muaj zog axial reciprocating tsab ntawv tsa suab, lub nplhaib roj hmab twg muaj qhov zoo tshaj plaws elastic rov qab thiab hnav tsis kam tiv thaiv kom tsis txhob xau?
- Elastic rov ua haujlwm: Cov roj hmab ntuj (NR) muaj kev ua haujlwm zoo ntawm elastic rov qab thiab tuaj yeem tswj xyuas cov nyhuv sealing zoo thaum pib thiab nres thiab cov lus tsa axial reciprocating hnyav.
- Hnav tsis kam: Polyurethane roj hmab (PU) muaj kev hnav zoo heev thiab tuaj yeem tiv thaiv kom tsis txhob tawm thaum lub sijhawm ua haujlwm hnyav.
Q: Puas yog lub nplhaib sealing roj hmab ntawm cov twj siv tshuaj ua los ntawm cov khoom sib txawv puas tau hloov pauv cov cuab yeej tshuaj tom qab kev sib cuag nrog cov tshuaj sib txawv, yog li cuam tshuam rau kev sib khi? Yuav saib xyuas thiab tiv thaiv nws li cas?
- Kev hloov pauv ntawm cov khoom siv tshuaj: Dynamic sealing rubber rings ntawm cov twj siv tshuaj ua los ntawm cov khoom sib txawv tuaj yeem hloov pauv hauv cov khoom siv tshuaj lom neeg, xws li o, tawv, degradation, thiab lwm yam., tom qab kev sib cuag ntev nrog cov tshuaj sib txawv, yog li cuam tshuam rau kev sib khi ua haujlwm.
- Kev saib xyuas thiab kev tiv thaiv
- Kev tshuaj xyuas tsis tu ncua: Kev tshuaj xyuas tsis tu ncua ntawm lub nplhaib roj hmab sealing kom pom tias muaj kev deformation, tawg, kev laus, thiab lwm yam.
- Media compatibility test: Ua ib qho kev ntsuam xyuas kev tshaj tawm ntawm lub nplhaib roj hmab sealing ua ntej siv los xyuas kom meej tias nws phim cov tshuaj lom neeg ntawm cov khoom nruab nrab.
- Hloov lub voj voog: Raws li kev siv lub nplhaib roj hmab sealing thiab cov yam ntxwv ntawm qhov nruab nrab, teem caij hloov lub voj voog tsim nyog thiab hloov lub nplhaib sib khi los yog puas tsuaj rau lub sijhawm.
Q: Thaum txhim kho lub dynamic sealing roj hmab nplhaib ntawm lub twj tso kua mis tshuaj, puas muaj cov txheej txheem kev teeb tsa tshwj xeeb thiab kev ceev faj rau cov duab sib txawv xws li O-shaped, V-shaped, thiab di ncauj-puab kom tsis txhob raug foob vim kev teeb tsa tsis raug?
- O-ring: Thaum txhim kho, xyuas kom meej tias qhov chaw ntawm O-ring tsis muaj kev puas tsuaj thiab impurities. Siv cov cuab yeej tshwj xeeb los tso O-ring smoothly rau hauv qhov sib khi kom tsis txhob ncab ntau dhau los yog sib tw.
- V-ntiv nplhaib: Thaum txhim kho V-ntiv nplhaib, xyuam xim rau qhov qhib kev taw qhia ntawm V-ntiv nplhaib. Feem ntau, qhov qhib yuav tsum tau tig rau sab nrog qis qis. Nyob rau tib lub sijhawm, xyuas kom meej tias daim di ncauj ntawm V-ntiv nplhaib fits nruj nrog lub sealing nto kom tsis txhob ploj los yog tsis ncaj ncees lawm installation.
- Di ncauj nplhaib: Thaum txhim kho lub di ncauj nplhaib, xyuas kom meej tias daim di ncauj yog nyob rau hauv qhov tseeb, nrog daim di ncauj tig rau lub hauv paus ntawm lub siab. Ua siab mos thaum lub sijhawm teeb tsa kom tsis txhob ua rau daim di ncauj.
- Nws paub tias qhov kub thiab txias ntawm qhov nruab nrab xa los ntawm cov twj siv tshuaj yog qhov loj (xws li -20 degree rau 180 degree ). Yuav ua li cas xaiv cov khoom siv roj hmab uas tsim nyog raws li qhov kub thiab txias, thiab yuav ua li cas los xyuas kom meej lub sealing stability ntawm lub nplhaib roj hmab thaum lub sij hawm hloov kub ntau zaus?
- Kev xaiv cov khoom siv: Silicone roj hmab (SIL) muaj qhov kub thiab txias ua haujlwm thiab tuaj yeem tswj xyuas kev sib khi zoo hauv qhov kub ntawm -20 degree mus rau 180 degree .
- Kev ruaj ntseg lav
- Xaiv lub nplhaib roj hmab zoo: Raws li qhov ntsuas kub hloov pauv, xaiv cov khoom siv roj hmab uas muaj qhov kub thiab txias, xws li roj hmab silicone.
- Tawm ntawm cov npoo thaum lub sij hawm installation: Thaum txhim kho lub nplhaib roj hmab, coj mus rau hauv tus account lub thermal expansion los yog contraction tshwm sim los ntawm qhov kub thiab txias hloov thiab tawm ib tug tej yam margin kom haum rau qhov kub thiab txias.
- Kev tshuaj xyuas tsis tu ncua thiab kev hloov kho: Nyob rau hauv kev ua haujlwm nrog qhov kub thiab txias hloov pauv, qhov kev sib khi ntawm lub nplhaib roj hmab yuav tsum tau kuaj xyuas tsis tu ncua thiab hloov kho lossis hloov lub sijhawm kom ruaj ntseg sealing.
Cim npe nrov: chemical twj tso kua mis dynamic sealing roj hmab nplhaib, Tuam Tshoj tshuaj twj tso kua mis dynamic sealing roj hmab nplhaib manufacturers, lwm tus neeg, Hoobkas
