Kev Taw Qhia
Hauv kev lag luam automation, solenoid valves ua haujlwm ua cov khoom tseem ceeb rau kev tswj cov kua dej ntws hauv cov ntawv thov xws li kev tsim khoom thiab kev ua tshuaj mus rau lub zog thiab kev kho mob. Txawm hais tias kev tsim valve thiab kev ua haujlwm electromagnetic feem ntau tau txais kev saib xyuas tseem ceeb, kev xaiv cov ntaub ntawv sealing tseem yog qhov txiav txim siab hauv kev ua haujlwm ntev. Cov ntsaws ruaj ruaj tiv thaiv kev xau sab hauv thiab sab nraud, tswj kev ruaj khov ntawm lub siab, thiab tiv thaiv kev puas tsuaj los ntawm cov xov xwm, kub, thiab cov voj voog ua haujlwm. Kev txiav txim siab tsis raug ntawm lawv qhov sib xws nrog cov xwm txheej ua haujlwm tuaj yeem ua rau tsis ua haujlwm ua ntej, kev pheej hmoo kev nyab xeeb, thiab lub sijhawm tsis tau npaj tseg kim heev. Tsab xov xwm no tshuaj xyuas peb cov polymers sealing siv dav dav—NBR, FKM, thiab EPDM—thiab muab ib lub moj khaum uas muaj cov qauv rau kev sib phim cov khoom siv rau cov kev xav tau ntawm daim ntawv thov.
1. Lub Luag Haujlwm ntawm Cov Ntxig Hauv Kev Ntseeg Tau ntawm Solenoid Valve
Cov ntsaws ruaj ruaj hauv cov solenoid valves ua ntau yam haujlwm tseem ceeb:
Tiv Thaiv Kev Xaim: Los ntawm kev tsim cov teeb meem nruj ntawm cov khoom txav mus los thiab lub cev valve, cov foob kom ntseeg tau tias tsis muaj kev xaim hauv ob qho tib si static thiab dynamic daim ntawv thov.
Kev Tiv Thaiv Tshuaj Lom Zem: Lawv yuav tsum tiv taus kev raug rau cov xov xwm hnyav, suav nrog cov roj, cov kua qaub, cov kuab tshuaj, lossis cov pa dej, yam tsis muaj o, tawg, lossis lwj.
Kev Hloov Kho Kub: Cov ntsaws ruaj ruaj khaws cov elasticity thoob plaws qhov kub thiab txias, los ntawm cov xwm txheej cryogenic mus rau qhov chaw kub siab.
Kev Ruaj Khoov Kho Tshuab: Lawv nyiaj dhau qhov kev nias thiab kev sib txhuam los ntawm kev ua haujlwm ntawm lub valve, tiv taus kev hnav thiab kev rho tawm ntau lab lub voj voog.
Kev xaiv cov khoom siv tsis raug tuaj yeem ua rau lub foob tawv, extrusion, lossis tshuaj xeb - cov laj thawj tseem ceeb ntawm kev ua tsis tiav ntawm lub valve.
2. Cov Khoom Siv Rau Kev Kaw Cov Yuam Sij: Cov Khoom Thiab Cov Kev Siv
2.1 NBR (Nitrile Butadiene Roj Hmab)
Lub Zog Tseem Ceeb: Ua tau zoo heev rau cov roj av, roj av, thiab roj av, ua rau nws yog ib qho kev daws teeb meem pheej yig rau cov tshuab hydraulic thiab pneumatic. Nws kuj muaj kev tiv thaiv kev sib txhuam zoo thiab lub zog tensile.
Cov Kev Txwv: Muaj kev phom sij rau ozone, UV raug, thiab cov kuab tshuaj ketone/ester; qhov kub ua haujlwm yog nqaim dua li cov polymers siab heev.
Kub thiab txias: -30°C txog +100°C (lub sijhawm luv).
Zoo tagnrho rau: Cov tshuab cua compressed, cov kav roj cav, kev tswj cov roj nplua nyeem, thiab cov hydraulics kev lag luam siv cov roj mineral.
2.2 FKM (Fluorocarbon roj hmab)
Lub Zog Tseem Ceeb: Kev tiv taus zoo heev rau qhov kub thiab txias, tshuaj lom neeg, thiab oxidation. Cov foob FKM ua haujlwm tau zoo hauv cov xov xwm hnyav, suav nrog cov kua qaub, cov roj hluavtaws, thiab cov hydrocarbons uas muaj ntxhiab tsw qab.
Cov Kev Txwv: Tus nqi siab dua; kev ywj pheej tsawg ntawm qhov kub qis; tsis sib xws nrog ketones, esters, thiab ammonia.
Kub Ntau: -20°C txog +200°C (lub sijhawm luv luv txog li 230°C).
Zoo tagnrho rau: Kev ua tshuaj lom neeg, cov khoom siv tshuaj, cov kav dej kub siab, thiab cov tshuab turbo hauv tsheb.
2.3 EPDM (Ethylene Propylene Diene Monomer)
Lub Zog Tseem Ceeb: Tiv taus dej kub, pa dej, ozone, thiab huab cua zoo heev. Nws kuj tiv taus cov kua phosphate ester (piv txwv li, Skydrol) thiab cov kua qaub/alkalis uas tsis sib xyaw.
Cov Kev Txwv: Tsis haum rau cov roj av lossis roj siv; kev raug rau qhov no ua rau o sai thiab ua tsis tiav.
Kub thiab txias: -40°C txog +150°C (lub sijhawm luv).
Zoo tagnrho rau: Cov tshuab kho dej, cov voj voog txias, kev ua zaub mov thiab dej haus, thiab kev siv hydraulics aviation siv phosphate esters.
3. Kev Tshawb Fawb Sib Piv: Xaiv Cov Khoom Siv Zoo
Cov lus hauv qab no piav qhia txog cov yam ntxwv tseem ceeb ntawm kev ua tau zoo:
| Khoom vaj khoom tsev | NBR | FKM | EPDM |
| Kev Tiv Thaiv Roj Av | Zoo heev | Zoo heev | Txom Nyem (Tsis Txhob) |
| Kev Tiv Thaiv Dej/Ncuav | Nruab nrab | Zoo | Zoo heev |
| Kub Tshaj Plaws Txuas Ntxiv Mus | 100°C | 200°C | 150°C |
| Kev Ywj Pheej Thaum Kub Qis | -30°C | -20°C | -40°C |
| Kev Tiv Thaiv Oxidation / Ozone | Txom nyem | Zoo heev | Zoo heev |
| Kev Siv Nyiaj Zoo | Kev Lag Luam | Qib siab | Nruab nrab |
4. Ib Txoj Kev Xaiv Uas Muaj Cov Qauv
Kauj Ruam 1: Txhais cov kua nruab nrab
Dej, pa dej, lossis cawv: EPDM feem ntau yog qhov zoo tshaj plaws vim nws qhov hydro-stability.
Cov roj, roj av, lossis cov hydrocarbons: NBR lossis FKM yog qhov tsim nyog, nrog FKM nyiam rau qhov kub siab lossis cov kua hluavtaws.
Cov tshuaj lom neeg ua phem: Xyuas kom meej tias siv cov ntawv qhia txog kev tiv thaiv tshuaj lom neeg; FKM feem ntau muab qhov kev tiv thaiv dav tshaj plaws.
Kauj Ruam 2: Soj Ntsuam Kub thiab Siab
Cov chaw kub siab (>150°C): FKM lossis cov polymers tshwj xeeb (piv txwv li, FFKM) yog qhov tsim nyog kom tsis txhob laus sai.
Cov ntawv thov cryogenic: Cov ntaub ntawv EPDM lossis PTFE ua kom muaj elasticity ntawm qhov kub qis.
Qhov siab tshaj plaws: Xyuas kom lub foob lub zog kho tshuab thiab kev tsim qauv tiv thaiv kev rho tawm sib phim nrog lub zog ntawm lub kaw lus.
Kauj Ruam 3: Soj Ntsuam Xyuas Lub Neej Thiab Cov Kev Txwv ntawm Tus Nqi
Lub neej luv luv, cov txheej txheem tsis tseem ceeb: NBR muab qhov sib npaug ntawm kev ua tau zoo thiab kev lag luam.
Cov ntawv thov uas siv tau ntev, siv tau hnyav, lossis muaj kev nyab xeeb heev: Nqis peev rau hauv FKM kom txo lub sijhawm tsis ua haujlwm thiab muaj kev ntseeg siab dua.
5. Tej Yam Tsis Zoo Thiab Tej Yam Uas Yuav Tshwm Sim
Siv NBR nrog cov pa lossis ozone: Ua rau tawv, tawg, thiab xau hauv ob peb lub lis piam.
Siv EPDM rau hauv cov kav dej roj: Ua rau lub foob o sai, lub valve raug mob, thiab lub kaw lus tsis ua haujlwm.
Xaiv FKM rau cov pa roj uas kub tsawg: Tej zaum yuav ua rau muaj kev tawg yooj yim hauv qab -20 ° C yam tsis muaj qib kub tsawg.
6. Cov Qauv Yav Tom Ntej hauv Kev Siv Tshuab Seal
Kev Sib Xyaws Ua Tau Zoo: PTFE-filled elastomers txhim kho kev tiv thaiv tshuaj lom neeg thiab kub thaum txo kev sib txhuam.
Cov Ntiv Tes Ntse: Cov sensors uas muab tso rau hauv yuav saib xyuas kev hnav, siab, thiab kub, ua kom muaj kev txij nkawm ua ntej.
Cov Khoom Siv Ruaj Khov: Cov polymers bio-based thiab cov khoom siv rov ua dua tshiab tau nce siab rau cov lag luam uas xav txog ib puag ncig.
Xaus lus
Kev xaiv cov khoom siv foob tsis yog ib qho txheej txheem uas haum rau txhua tus tab sis yog kev sib phim cov khoom siv nrog rau kev xav tau ua haujlwm. Txawm hais tias NBR zoo tshaj plaws hauv cov txheej txheem roj, FKM tiv taus cov tshuaj lom neeg thiab qhov kub siab, thiab EPDM tsis muaj qhov sib piv hauv kev siv dej thiab pa dej. Kev nkag siab txog qhov sib txawv no - thiab siv cov ntaub ntawv kev tshaj lij los ntawm cov neeg muag khoom - ua kom ntseeg tau tias lub valve ua haujlwm zoo tshaj plaws, txo cov nqi siv lub neej, thiab txo cov kev pheej hmoo ua haujlwm.
Tsab xov xwm no yog rau kev qhia xwb. Ib txwm saib cov ntaub ntawv qhia txog kev siv thiab ua qhov kev sim sib xws rau cov kev siv tshwj xeeb.
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