Kev paub thiab qauv tsim ntawm roj hmab O-rings
Cov ntsaws ruaj ruaj:
Hauv cov tshuab hydraulic thiab lawv cov tshuab, cov ntsaws ruaj ruaj yog siv los tiv thaiv kev xau ntawm kev ua haujlwm nruab nrab thiab kev nkag mus ntawm cov plua plav sab nraud thiab cov khoom txawv teb chaws. Lub sealing tivthaiv yog lub foob.
Kev tawm sab nraud yuav ua rau cov khoom siv khib nyiab, ua paug rau lub tshuab thiab ib puag ncig, thiab tseem ua rau lub tshuab ua haujlwm tsis zoo thiab cov cuab yeej siv thiab kev sib tsoo ntawm tus kheej.
Cov dej ntws tawm hauv qhov kev ua haujlwm ntawm lub tshuab hydraulic yuav ua rau muaj kev poob qis, tsis ua haujlwm kom ncav cuag lub zog ua haujlwm, lossis txawm tias tsis ua haujlwm zoo.
Kev nkag mus ntawm cov plua plav me me hauv qhov system tuaj yeem ua rau lossis ua rau muaj kev sib txhuam thiab hnav ntawm cov khoom siv hydraulic, ntxiv rau kev xau.
Yog li ntawd, cov ntsaws ruaj ruaj thiab cov ntsaws ruaj ruaj ntawm cov khoom siv hydraulic yog ib qho tseem ceeb. Nws txoj kev ntseeg siab thiab kev pabcuam lub neej yog qhov tseem ceeb qhia txog qhov zoo ntawm hydraulic system.
Ntxiv nrog rau qhov sib txawv sealing, kev siv cov ntsaws ruaj ruaj yog tsim nyog los tswj cov kev sib txuas ntawm ob qhov chaw uas nyob ib sab los ntawm kev sib khi qhov tsawg kawg nkaus hauv qab no kom tswj tau qhov sib txawv ntawm cov kua.
Nyob rau hauv kev sib cuag seals, nias-haum nws tus kheej-sealing thiab self-sealing self-tightening seals (uas yog, lub sealing di ncauj).
Taw qhia rau roj hmab O-rings
O-hom sealing nplhaib yog lub nplhaib roj hmab nrog lub voj voog hla ntu. Vim tias nws cov hlais yog O-puab, nws yog hu ua O-hom sealing nplhaib. , kuj hu ua O-ring. Nws pib tshwm nyob rau hauv nruab nrab -19th caug xyoo, thaum nws tau siv los ua ib qho kev sib khi rau lub tog raj kheej lub tog raj kheej. Nws yog ntau hom kev siv hydraulic thiab pneumatic kis tau tus mob. Nws feem ntau hu ua O-Ring hauv Taiwanese thiab Japanese tuam txhab.
O-ring yog ib qho roj hmab foob nrog lub voj voog hla ntu. Nws yog tsuas yog siv los tiv thaiv cov kua thiab gaseous xov xwm nyob rau hauv txhua yam khoom nyob rau hauv zoo li qub. Qee zaum, O-ring kuj tuaj yeem siv rau axial reciprocating motion. thiab dynamic sealing ntsiab nrog low-speed rotating motion. Raws li cov xwm txheej sib txawv, cov ntaub ntawv sib txawv tuaj yeem xaiv kom haum rau lawv.
Thaum xaiv O-ring, koj yuav tsum sim siv O-ntiv nplhaib nrog rau qhov loj loj. Nyob rau hauv tib qhov sib txawv, qhov ntim ntawm O-nplhaib nyem rau hauv qhov sib txawv yuav tsum tsawg dua li qhov siab tshaj qhov tso cai.
Rau ntau hom kev sib khi ruaj khov lossis cov ntawv thov kev sib khi zoo, O-rings muab cov qauv tsim nrog cov khoom sib khi zoo thiab kev lag luam. O-ring yog ob txoj kev sib khi. Thawj compression nyob rau hauv lub radial los yog axial kev taw qhia thaum lub sij hawm installation muab O-ring nws tus kheej pib sealing peev xwm. Lub sealing quab yuam generated los ntawm lub system siab thiab thawj sealing quab yuam ua ke los ua ib tug tag nrho sealing quab yuam, uas nce raws li lub system siab. O-rings ua lub luag haujlwm tseem ceeb hauv cov xwm txheej zoo li qub. Txawm li cas los xij, hauv cov xwm txheej tsim nyog, O-rings feem ntau siv, tab sis lawv raug txwv los ntawm kev ceev thiab siab ntawm lub foob.
Nws muaj qhov zoo hauv qab no:
1) Compact qauv, yooj yim rau assemble thiab disassemble,
2) Ob leeg zoo li qub thiab dynamic seals tuaj yeem siv tau,
3) Dynamic txhuam tsis kam yog me me,
4) Siv ib qho ntawm O-ring foob, nws tuaj yeem muab khi rau ob qho tib si.
O-ring specifications thiab cov qauv
O-ring specifications thiab qauv feem ntau suav nrog UHSO-ring specifications, UHPO-ring specifications, UNO-ring specifications, DHO-ring specifications, piston pas nrig O-ring specifications, high-temperature-resistant O-rings, high-pressure-resistant O -Rings, corrosion-resistant O-rings nplhaib, hnav-resistant O-ring.
O-rings muaj kev sib khi zoo heev thiab ua haujlwm ntev. Lub neej ua haujlwm ntawm cov ntsaws ruaj ruaj dynamic siab yog 5-10 lub sij hawm ntev dua li cov khoom siv roj hmab sealing, mus txog kaum ob lub sij hawm ntev dua. Nyob rau hauv tej yam kev mob, nws muaj peev xwm muaj tib lub neej ncua raws li lub sealing matrix.
Kev sib txhuam tsis sib haum ntawm O-ntiv nplhaib yog me me, thiab cov kev sib txhuam dynamic thiab zoo li qub yog sib npaug, uas yog 1/2-1/4 ntawm kev sib txhuam quab yuam ntawm "0"-zoo li lub nplhaib roj hmab. Nws tuaj yeem tshem tawm qhov "crawling" tshwm sim ntawm kev txav ntawm qhov ceev thiab tsis tshua muaj siab.
Lub O-ring yog hnav-tiv taus thiab muaj qhov tsis siv neeg elastic nyiaj ua haujlwm tom qab lub sealing nto yog hnav.
O-ring muaj qhov zoo ntawm tus kheej lubricating thiab tuaj yeem siv los ua cov roj tsis muaj roj lubrication foob.
O-ring O-ring muaj cov qauv yooj yim thiab yooj yim rau nruab.
O-ring ua haujlwm siab: 0-300MPa; Ua haujlwm ceev: Tsawg dua lossis sib npaug li 15m / s; Ua haujlwm kub: -55-250 degrees.
Cov xov xwm siv tau rau O-rings: hydraulic roj, roj, dej, av nkos, roj crude, emulsion, dej-glycol, acid.
O-ring siv ntau yam
O-hom sealing rings yog tsim rau kev teeb tsa ntawm ntau yam khoom siv kho tshuab, thiab ua lub luag haujlwm sib khi hauv cov xwm txheej zoo li qub lossis txav tau raws li qhov ntsuas kub, qhov siab, thiab cov kua thiab roj sib txawv. Ntau hom sealing yog siv dav hauv cov cuab yeej siv tshuab, nkoj, tsheb, tsheb, khoom siv aerospace, metallurgical machinery, chemical machinery, engineering machinery, engineering machinery, build machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, thiab ntau yam cuab yeej thiab meters. keeb. O-rings feem ntau yog siv rau kev sib khi zoo li qub thiab rov ua dua tshiab. Thaum siv rau kev sib txuas lus sib txuas, nws tsuas yog siv rau cov khoom siv qis-ceev rotary sealing. O-rings feem ntau yog ntsia rau hauv grooves nrog ib lub duab plaub hla ntawm sab nrauv lossis sab hauv lub voj voog kom kaw. O-ring foob tseem ua lub luag haujlwm zoo sealing thiab poob siab-absorbing nyob rau hauv ib puag ncig xws li roj, kua qaub, alkali, puas, thiab tshuaj yaig. Yog li, O-rings yog cov ntsaws ruaj ruaj tshaj plaws hauv hydraulic thiab pneumatic kis tau tus mob.
Kev ua haujlwm siab roj hmab O-ring
Fluoro Carbon Rubber yog cov roj hmab uas muaj fluorine hauv cov molecule. Muaj ntau hom raws li cov ntsiab lus fluorine (ie monomer qauv). Lub tam sim no dav siv hexafluorinated fluororubber yog thawj zaug launched los ntawm DuPont nyob rau hauv lub npe lag luam "Viton". Nws qhov kub tsis kam yog qhov zoo dua li cov roj hmab silicone, thiab nws muaj cov tshuaj lom neeg zoo heev, ua rau cov roj thiab cov kuab tshuaj feem ntau (tshwj tsis yog ketones thiab esters), huab cua tsis kam thiab ozone tsis kam; nws qhov kev tiv thaiv txias tsis zoo, thiab kev siv dav dav dav dav yog -20 ~ 250 degree . Cov mis tshwj xeeb tuaj yeem tiv taus qhov kub thiab txias mus rau -40 degree .
O-ring yog ib qho roj hmab O-ring nrog ib ncig hla ntu. Vim tias nws qhov hlais yog O-puab, nws hu ua O-ring. Roj Hmab O-rings yog cov khoom siv dav tshaj plaws hauv hydraulic thiab pneumatic kis tau tus mob. Feem ntau, roj hmab O-rings tsis tshua muaj siv nyob rau hauv rotating motion sealing li. Roj Hmab O-rings feem ntau yog ntsia rau hauv grooves nrog ib lub voj voog hla ntawm sab nraud lossis sab hauv lub voj voog rau kev sib khi.
Fluorine roj hmab (FKM) yog cov organic elastomer copolymerized los ntawm fluorine-muaj monomers. Nws cov yam ntxwv muaj xws li kub tsis kam mus txog 300 degree, acid thiab alkali tsis kam, thiab roj kuj, uas yog qhov zoo tshaj plaws ntawm cov roj-resistant roj hmab. Nws muaj kev tiv thaiv hluav taws xob zoo thiab lub tshuab nqus tsev siab; hluav taws xob rwb thaiv tsev, mechanical zog, tshuaj corrosion kuj, ozone kuj, thiab atmospheric kuj. Kev laus tiv taus yog zoo heev. Cov kev tsis zoo yog cov txheej txheem tsis zoo, tus nqi siab, tsis muaj qhov txias txias, thiab tsis tshua muaj elasticity thiab breathability.
Kev khiav hauj lwm kub: -40 degree ~ +300 degree . Nrog rau txoj kev loj hlob ntawm kev lag luam, fluorine roj hmab O-rings yog dav siv nyob rau hauv tsheb, electronics, aerospace, ships, thiab lwm yam, uas yuav tsum tau kuj high precision, kub kuj, siab hnav tsis kam, thiab hnyav ua hauj lwm ib puag ncig. Nrog rau kev txhim kho kev lag luam, cov khoom siv roj hmab fluorine Peb kuj tseem txhim kho thiab tsim kho tshiab. Cov hauv qab no yog cov khoom thiab daim ntawv thov ntawm cov khoom siv fluororubber dav siv.
qhov zoo:
Nws tuaj yeem tiv taus cua sov txog 250 degree thiab tiv taus cov roj thiab cov kuab tshuaj feem ntau, tshwj xeeb tshaj yog tag nrho cov acids, aliphatic hydrocarbons, aromatic hydrocarbons, thiab tsiaj thiab zaub roj. Zoo tshuaj stability, zoo heev kub kuj, zoo aging kuj, zoo heev nqus tsev kawm ntawv, zoo heev mechanical zog, zoo rwb thaiv tsev zog, zoo heev nqus tsev vacuum, zoo heev mechanical zog, zoo rwb thaiv tsev zog.
tsis txaus:
Tsis pom zoo siv nrog ketones, qis molecular hnyav esters thiab nitrate-muaj cov sib tov. Tsheb, locomotives, diesel xyaw thiab roj systems.
Cov khoom tseem ceeb ntawm O-ring cov khoom muaj xws li
Nitrile roj hmab (NBR): Cov khoom no muaj qhov kub siab tshaj plaws ntawm 130 degrees thiab hardness ntawm 50-90 degrees. Nws muaj tag nrho cov specifications. Nws muaj cov khoom siv kho tshuab zoo thiab tiv taus cov ntxhia hauv cov roj nplua nyeem thiab roj.
fluorine roj hmab (FPM): Cov khoom siv no tuaj yeem ncav cuag qhov kub thiab txias li 240 degrees thiab muaj cov ntsiab lus tiav. Nws yog nto moo rau nws cov khoom zoo xws li kub tsis kam thiab tshuaj tiv thaiv. Tsis tas li ntawd, nws kuj muaj cov khoom zoo los tiv thaiv kev laus thiab tiv thaiv oxidation, thiab tsis tshua muaj roj permeability (tshwj xeeb tshaj yog haum rau lub tshuab nqus tsev high-altitude devices).
EPDM roj hmab: muaj qhov kub thiab txias ntawm -50 degrees txog 150 degrees, thiab tiv taus cov dej kub, chav dej, kev laus thiab tshuaj lom neeg. Nws yog tsim rau cov dej kub, chav dej, xab npum, tshuaj poov tshuaj hydroxide, silicone roj thiab roj, ntau yam dilute acids thiab tshuaj (tshuaj). Nws yog tshwj xeeb tshaj yog pom zoo rau nws tsis kam mus rau glycol nres kua, tab sis nws tsis tau tshaj tag nrho cov ntxhia roj cov khoom (lubricants, fuels).
Silicone (SI): Silicone roj hmab muaj qhov dav tshaj plaws ntawm kev ua haujlwm kub (-60-180 degree), tsis muaj teeb meem, tsis muaj tshuaj lom thiab tsis muaj ntxhiab, muaj kev tiv thaiv zoo rau ozone kev laus, oxygen aging, lub teeb aging thiab huab cua aging, thiab muaj zoo heev. hluav taws xob rwb thaiv tsev Performance, tshwj xeeb nto khoom thiab physiological inertness, siab breathability
Kuj tseem muaj ntau yam ntaub ntawv xws li: polyurethane roj hmab (PU), ntuj roj hmab (NR), butyl roj hmab (BU), sulfonated polyethylene (CSM), polytetrafluoroethylene (PTFE), neoprene roj hmab (CR), acrylic roj hmab (ACM) thiab lwm yam khoom siv.
O-shaped roj hmab sealing nplhaib compound tsim
<1>Cov ntsiab cai ntawm tus qauv tsim
Cov qauv roj hmab feem ntau muaj cov roj hmab nyoos, vulcanization antioxidant reinforcing tus neeg sawv cev, kev tiv thaiv kab mob, kev txhawb zog thiab kev ua kom zoo. Lub hom phiaj ntawm kev tsim qauv yog nrhiav kev sib xyaw ua ke zoo tshaj plaws ntawm ntau yam khoom kom tau txais kev ua tau zoo tag nrho. Formula design yuav tsum ua kom tiav cov hom phiaj hauv qab no:
1. Ua tau raws li qhov yuav tsum tau ua ntawm lub nplhaib sealing.
2. Lub tshuab ua roj hmab muaj kev ua haujlwm zoo.
3. Ntawm qhov chaw ua kom ntseeg tau cov khoom zoo, sim xaiv cov khoom siv raw khoom uas pheej yig, nplua nuj nyob hauv qhov chaw, tsis muaj tshuaj lom lossis tsis muaj tshuaj lom, thiab muaj kev ua haujlwm ruaj khov.
Cov qauv roj hmab tuaj yeem muab faib ua cov qauv ntsuas thiab cov qauv siv tau raws li lawv siv. Tus qub yog los kawm lossis txheeb xyuas qhov kev sib raug zoo ntawm qee yam khoom siv raw thiab cov khoom ntawm cov roj hmab vulcanized thiab cov roj hmab sib xyaw, thiab sib zog ua kom yooj yim hauv kev sib xyaw. Cov qauv siv tau tsuas yog kawm txog kev sib raug zoo ntawm kev ua haujlwm ntawm cov roj hmab vulcanized, qhov ua tau zoo ntawm cov khoom thiab cov txheej txheem kev ua haujlwm ntawm cov roj hmab compounded. Cov txheej txheem ntawm kev tsim cov qauv siv tswv yim yog:
Kev soj ntsuam ntawm ib puag ncig thiab kev tsim khoom siv los ntawm cov khoom siv - à xaiv cov roj hmab hom thiab ntau yam khoom xyaw uas tsim cov qauv, cov qauv ntsuas - à kev ntsuas kev ua tau zoo - kev hloov kho thiab kev txhim kho - nthuav qhov kev sim los txiav txim siab cov qauv siv. .
<2>O-ring sealant compound tsim
Lub complex thiab ntau haiv neeg ua hauj lwm ib puag ncig ntawm O-zoo li tus roj hmab sealing nplhaib yuav tsum tau nws cov khoom siv roj hmab kom muaj tej yam khoom tshwj xeeb. Nyob rau hauv hydraulic systems, zoo roj kuj, kub kuj, tsis tshua muaj compression mus tas li deformation thiab tej yam tensile zog yuav tsum tau. Raws li lub foob dynamic, ntxiv rau qhov yuav tsum tau ua, cov khoom siv roj hmab yuav tsum muaj kev hnav zoo thiab tsim kua muag. Rau kev sib khi ntawm cov xov xwm tshwj xeeb, lub ntim hloov pauv thiab hardness hloov ntawm cov khoom siv roj hmab hauv nruab nrab yuav tsum yog me me. Nyob rau hauv luv luv, tus qauv tsim yuav tsum muaj kev pom zoo raws li kev ua haujlwm tshwj xeeb, hom nruab nrab, kev ua haujlwm kub, kev ua haujlwm siab thiab daim ntawv thov.
<3>O-ring sealing roj hmab ua
Tam sim no, txoj kev tsim khoom ntawm O-puab roj hmab sealing rings yog tsuas yog los ntawm molding. Ntawm lawv, cov txheej txheem vulcanization ntawm cov khoom molded feem ntau suav nrog cov phaj tiaj tiaj molding, hloov molding thiab txhaj tshuaj molding. Lub tiaj phaj molding txoj kev muaj keeb kwm ntev tshaj plaws. Hloov molding pib siv nyob ib ncig ntawm 1950s, thaum txhaj tshuaj molding maj mam txav los ntawm kev lag luam yas mus rau kev lag luam roj hmab hauv xyoo 1960. Txoj kev loj hlob tam sim no yog maj mam tsim txoj kev txhaj tshuaj siab, tab sis vim muaj qhov sib txawv ntawm kev hloov pauv. Nws tseem yog qhov tseeb tias peb tuaj yeem sib koom ua ke thiab txhim kho. Raws li nws cov yam ntxwv, O-shaped sealing rings tseem siv lub phaj tiaj tus molding raws li txoj hauv kev tseem ceeb.
Thaum lub sij hawm molding vulcanization txheej txheem, vulcanization kub, lub sij hawm thiab siab yuav tsum nruj me ntsis tswj thiab kom raug, thiab cov kev hloov nyob rau hauv tsis xws li kub thaum lub sij hawm vulcanization txheej txheem yuav tsum tau them sai sai mus rau lub sij hawm twg los tau thiab ua raws li. Txwv tsis pub, cov khoom yuav tsis muaj sulfurized los yog dhau-sulfurized. Yog tias siv lub tshuab tswj tsis siv neeg, tag nrho cov txheej txheem vulcanization yuav raug kaw thiab tswj xyuas kom ntseeg tau tias cov khoom ncav cuag qhov tseeb ntawm vulcanization.
Vulcanization kub yog ib qho ntawm cov txheej txheem yooj yim rau vulcanization cov tshuaj tiv thaiv ntawm roj hmab O-ring seals. Nws ncaj qha cuam tshuam rau vulcanization ceev thiab cov khoom zoo. Lub vulcanization kub yog siab, vulcanization ceev ceev, thiab cov efficiency ntau lawm; qhov kub ntawm vulcanization yog tsawg, lub vulcanization ceev yog qeeb. Qhov kub ntawm vulcanization nyob ntawm qhov kev tsim, qhov tseem ceeb tshaj plaws yog nyob ntawm seb hom roj hmab thiab cov vulcanization system siv. Qhov zoo tshaj plaws vulcanization kub ntawm cov roj hmab ntuj yog feem ntau 143 degree -150 degree, thiab cov hluavtaws roj hmab feem ntau yog 150 degree -180 degree . Lub sij hawm vulcanization feem ntau yog txiav txim los ntawm kev sim raws li qhov ntsuas vulcanization kub.
Cov khoom siv roj hmab yog pressurized thaum lub sij hawm vulcanization txheej txheem. Lub hom phiaj yog ua kom cov khoom siv roj hmab ntws tau yooj yim thiab sau cov kab noj hniav pwm, tiv thaiv npuas los ntawm kev tsim cov txheej txheem vulcanization, thiab txhim kho qhov ntom ntawm cov khoom. Qhov loj ntawm vulcanization siab nyob ntawm qhov hardness ntawm cov khoom siv roj hmab thiab qhov loj ntawm pwm. Thaum lub hardness ntawm cov khoom siv roj hmab siab thiab qhov loj ntawm cov pwm loj, lub siab tuaj yeem ua tau ntau dua, txwv tsis pub lub siab yuav tsum raug txo kom tsim nyog.