Taw qhia
Roj hmab foob yog ib qho tseem ceeb ntawm cov tshuab niaj hnub thiab cov cuab yeej siv niaj hnub no. Lawv feem ntau siv nyob rau hauv ntau yam intricate chaw vim lawv superior yooj, sealing, thiab durability. Cov ntsaws ruaj ruaj, txawm li cas los xij, tau muab los ntawm ntau qhov kev sim nyob rau hauv cov xwm txheej hnyav, suav nrog qhov kub thiab qis qis, kev kub siab, kev vibration hnyav, thiab khaus corrosion. Yog li, tus yuam sij los daws cov teeb meem no yog kev tsim, kev siv, thiab kev tshawb fawb ntawm cov roj hmab zoo tshaj plaws. Kev ua tau zoo ntawm cov roj hmab ntsaws ruaj ruaj hauv cov xwm txheej hnyav thiab cov txheej txheem kev txhawb nqa ntawm cov ntsaws ruaj ruaj yuav raug tshuaj xyuas zoo hauv cov ntawv sau no.
1. Kev sib tw ntawm ib puag ncig huab rauroj hmab foob
Kub kub ib puag ncig
Cov cuab yeej siv hauv cov haujlwm suav nrog kev tsim hluav taws xob, roj refining, thiab dav hlau feem ntau raug kub siab heev-txog 200 degree lossis ntau dua. Thaum kub kub, cov khoom siv roj hmab feem ntau yuav muaj hnub nyoog, muag, lossis tawg, uas yuav ua rau lub foob tsis ua haujlwm. Txawm li cas los xij, qee cov roj hmab kub kub, xws li roj hmab silicone (VMQ) thiab fluororubber (FKM), tuaj yeem khaws lawv cov yam ntxwv ntawm lub cev nyob rau hauv qhov kub thiab txias, muab cov txiaj ntsig kev sib khi zoo.
Tsawg kub ib puag ncig
Cov ntsaws ruaj ruaj feem ntau yuav tsum cuam tshuam nrog qhov kub tsis tshua muaj siab hauv cov cuab yeej tshawb nrhiav hauv hiav txwv tob, tsheb aeronautical, thiab cov cuab yeej tshawb fawb txog keeb kwm yav dhau los. Cov khoom siv roj hmab feem ntau tuaj yeem ua kom tawv, plam lawv cov suppleness, lossis txawm tias tawg nyob rau hauv qhov kub thiab txias, uas tiv thaiv lawv los ntawm kev muab cov sealing txaus. Cov ntsaws ruaj ruaj tuaj yeem ua haujlwm ib txwm nyob ntawm -40 degree lossis txawm tias qis dua yog nitrile roj hmab (NBR) lossis ethylene propylene roj hmab (EPDM) nrog cov yam ntxwv kub qis dua.
Kev kub siab ib puag ncig
Hydraulic systems, khoom siv hauv qab dej hiav txwv, thiab cov roj thiab roj ntau lawm txhua zaus siv cov chaw siab. Roj hmab ntsaws ruaj ruaj yuav raug nyem, distorted, los yog txawm extruded thaum raug siab heev. Cov khoom siv roj hmab uas muaj cov qauv siab thiab lub zog compressive, xws li fluororubber thiab polyurethane (PU), raug xaiv los teb rau qhov xwm txheej no, thiab cov khoom siv roj hmab sib txuas nrog cov nplhaib hlau txhawb nqa tau tsim los txhim kho lawv lub peev xwm los tiv thaiv extrusion.
Chemical corrosion ib puag ncig
Ntau cov kua qaub, alkalis, cov kuab tshuaj, thiab lwm yam corrosive media yuav tsum tau los rau hauv kev sib cuag nrog cov ntsaws ruaj ruaj hauv cov khoom siv tshuaj thiab cov chaw muag tshuaj. Fluororubber (FKM) thiab perfluororubber (FFKM) nrog cov tshuaj tiv thaiv siab tau nquag siv los ua kom tau raws li qhov xav tau no. Cov kua qaub muaj zog, muaj zog alkalis, thiab cov kuab tshuaj organic tsis tuaj yeem rhuav tshem cov ntaub ntawv no, lav qhov kev ua haujlwm ruaj khov mus ntev ntawm cov ntsaws ruaj ruaj.
Kev vibration thiab poob siab ib puag ncig
Cov ntsaws ruaj ruaj hauv kev lag luam tshuab, tsheb, thiab kev tsheb ciav hlau yuav tsum muaj peev xwm zam lub sijhawm ntev ntawm kev poob siab thiab kev vibrations. Kev pabcuam lub neej ntawm cov ntsaws ruaj ruaj tuaj yeem txuas ntxiv tau zoo heev los ntawm kev siv cov roj hmab hydrogenated nitrile (HNBR) lossis cov ntaub ntawv polyurethane nrog kev qaug zog zoo dua, vim cov roj hmab zoo tib yam yuav ua tsis tau vim qaug zog.
2. Kev siv tau zoo ntawm cov roj hmab ntsaws ruaj ruaj hauv qhov chaw huab cua
Aerospace
Cov ntsaws ruaj ruaj yog tsim nyog nyob rau hauv kev lag luam dav hlau kom ntseeg tau tias muaj kev cia siab nyob rau hauv kev hloov pauv siab thiab kub siab heev thiab qis. Piv txwv li, lub tshuab nqus tsev twj tso kua mis yuav tsum ua haujlwm nyob rau hauv cov xwm txheej ntawm kev sib hloov ceev thiab kub siab txog 300 degree. Polytetrafluoroethylene (PTFE) los yog fluororrubber-coated seals tuaj yeem ua tiav cov kev qhia tshwj xeeb no.
Dej hiav txwv engineering
Submarine cables thiab drilling platforms xav tau cov ntsaws ruaj ruaj uas tuaj yeem tiv taus kev kub ntxhov tshwj xeeb thiab tiv thaiv dej hiav txwv corrosion. Vim tias lawv cov tshuaj zoo tshaj plaws thiab kev ua haujlwm siab, fluororruber thiab perfluororubber yog cov ntaub ntawv xaiv rau cov cuab yeej sib sib zog nqus dej hiav txwv, lav ruaj khov, ua haujlwm ntev.
Polar tshawb nrhiav
Roj hmab ntsaws ruaj ruaj nyob rau hauv cov khoom siv tshawb fawb txog keeb kwm yav dhau los yuav tsum muaj peev xwm tiv taus qhov kub ntawm -60 degree lossis qis dua. Txij li cov roj hmab silicone thiab ethylene propylene yog cov huab cua-resistant thiab hloov tau yooj yim ntawm qhov kub thiab txias, lawv nquag siv rau hauv cov xwm txheej hnyav no kom ntseeg tau tias cov cuab yeej ua haujlwm tau zoo.
Kev lag luam tshuaj
Cov khoom siv tshuaj lom neeg yuav tsum tiv taus ntau yam kuab tshuaj, muaj zog acids, thiab muaj zog alkalis. Piv txwv li, nyob rau hauv high-temperature sterilizing chaw, perfluororrubber seals muaj peev xwm tswj tau lawv stability thiab tsis muaj toxicity nyob rau hauv cov zaub mov thiab tshuaj industries, txaus siab rau stringent kev tu cev.
3. Kev kawm txuj ci txhawb kev txhim kho kev ua haujlwm ntawm cov roj hmab foob
Kev tshawb fawb thiab kev loj hlob ntawm cov ntaub ntawv Advanced
Raws li cov ntaub ntawv kev tshawb fawb tau nce, cov khoom siv roj hmab tshiab xws li perfluororubber, hydrogenated nitrile roj hmab, thiab fluorosilicone roj hmab yog pheej tsim. Cov ntaub ntawv no muaj kev xaiv ntxiv rau kev daws teeb meem kev sib khi hauv ib puag ncig hnyav vim lawv qhov kev ua tau zoo tshwj xeeb hauv kev kub siab, tsis kub tsis kam, siab tsis kam, thiab corrosion kuj.
Kev tsim kho kom zoo dua qub
Cov qauv ntawm lub foob tuaj yeem txhim kho kom nws tsis kam mus rau compression thiab qaug zog siv finite element tsom xam (FEA) thiab computer-aided tsim (CAD). Piv txwv li, koom nrog cov pob txha hlau rau hauv kev tsim cov roj hmab foob tuaj yeem txhim kho nws lub peev xwm los tiv thaiv extrusion.
Nto kho tshuab
Roj hmab foob ' hnav tsis kam thiab tshuaj lom neeg ruaj khov tuaj yeem txhim kho ntxiv thiab lawv lub neej kev pabcuam txuas ntxiv los ntawm kev siv cov txheej txheem kho saum npoo av, xws li txheej txheej polytetrafluoroethylene (PTFE) lossis lwm yam txheej txheej tiv thaiv.
4. Cov ntsiab lus
Roj hmab foob 'kev ua tau zoo tshwj xeeb nyob rau hauv cov xwm txheej hnyav yog inextricably txuas nrog kev pab ntawm cov khoom siv thiab thev naus laus zis. Ua tib zoo npaj thiab xaiv cov ntsaws ruaj ruaj tuaj yeem ua tau raws li qhov xav tau ntawm ntau qhov chaw ib puag ncig nyuaj thiab lav qhov kev nyab xeeb thiab kev ua haujlwm zoo ntawm cov cuab yeej siv, tsis hais qhov teeb meem-siab kub, tsis tshua muaj kub, siab siab, lossis tshuaj lom neeg corrosion. Roj hmab ntsaws ruaj ruaj yuav yog qhov tseem ceeb nyob rau hauv ib puag ncig dav thiab hnyav dua yav tom ntej raws li cov khoom siv thev naus laus zis thiab cov txheej txheem tsim ua ntej, muab kev txhawb zog rau kev nce qib ntawm kev lag luam, kev tshawb fawb, thiab thev naus laus zis.