Taw qhia
O-ringsua lub luag haujlwm tseem ceeb hauv kev tiv thaiv cov kua dej los yog cov pa tawm hauv cov ntawv thov xws li cov cav tsheb, cov khoom siv hydraulic, thiab cov khoom siv hauv tsev. Txawm li cas los xij, kev sib khi ua tau zoo thiab kev pabcuam lub neej ntawm O- nplhaib tsis yog nyob ntawm nws qhov ntev tsim, tab sis kuj, thiab tej zaum tseem ceeb dua, ntawm nws cov khoom siv. Cov khoom siv roj hmab sib txawv lossis cov khoom siv polymer muaj qhov sib txawv ntawm qhov kub thiab txias, tiv thaiv roj, thiab tshuaj tiv thaiv corrosion. Kab lus no yuav qhia txog cov ntaub ntawv siv los ua O-rings thiab cov yam ntxwv ntawm cov khoom sib txawv, pab koj xaiv cov khoom siv zoo tshaj O- nplhaib raws li koj qhov chaw thov tshwj xeeb.
Dab tsi yog cov khoom siv feem ntau siv rau O-Rings?
Yog vim li cas O-Rings siv Elastomers Hloov cov ntaub ntawv nruj
O-rings feem ntau yog ua los ntawm elastomers. Lawv cia siab rau elastic deformation los sau cov qhov khoob me me hauv qhov chaw sib khi, tsim kev sib cuag thawj zaug. Thaum lub siab raug siv los ntawm qhov nruab nrab ntawm lub cev, qhov deformability ntawm elastomer tso cai rau O-nplhaib yuav tsum tau compressed ntxiv, tsim kom muaj "tus kheej-tightening effect" los txhim kho lub sealing quab yuam. Nyob rau tib lub sij hawm, lub siab resilience thiab qis compression txheej ntawm lub elastomer tso cai rau nws tswj nws cov duab thiab sealing kev ua tau zoo tom qab rov qab siab thiab depressurization. Qhov no dynamic deformation sealing tsis tuaj yeem ua tiav yog tias siv cov ntaub ntawv nruj.
Common Elastomer Materials rau O-Rings
Kev ua tau zoo ntawm O-rings nyob ntawm ntau yam ntawm lub cev thiab tshuaj lom neeg ntawm elastomer siv. Cov khoom siv roj hmab sib txawv muaj qhov sib txawv ntawm qhov kub thiab txias, tshuaj tiv thaiv, compression teeb, thiab txhua yam muaj zog.
Nitrile Roj Hmab (NBR)
Khoom Khoom
Nitrile butadiene roj hmab (NBR) yog copolymer ntawm butadiene thiab acrylonitrile. Qhov piv ntawm acrylonitrile tuaj yeem sib txawv nyob ntawm daim ntawv thov; siab dua acrylonitrile cov ntsiab lus ua rau cov roj zoo dua thiab roj tsis kam. Nws muaj ntau yam hardness, los ntawm 40-90 Shore A, thiab tuaj yeem ua haujlwm hauv ib puag ncig ntawm -40℃mus rau +120℃. Vim nws cov roj tsis kam, roj tsis kam, thiab cov khoom siv zoo heev, nws tau siv dav hauv tsheb, roj thiab roj, thiab tshuaj lom neeg kev lag luam.
Kev txwv
Thaum NBR nthuav tawm qhov ua tau zoo rau ntau cov tshuaj thiab cov kev daws teeb meem, qee qhov kev txwv yuav tsum raug sau tseg. NBR yuav tsum khaws cia kom deb ntawm ozone, lub teeb ultraviolet, muaj zog oxidants, siab - roj tsw qab, thiab tsis yog - cov kuab tshuaj polar. Nws kuj tseem yuav tsum tsis txhob raug kub hnyiab rau lub sijhawm ntev, vim tias nws yog qhov yooj yim rau kev laus.
Fluorocarbon Roj Hmab (FKM / Viton)
Khoom Khoom
Fluorocarbon roj hmab (FKM) yog cov khoom siv ua haujlwm siab -. O-rings ua los ntawm nws muaj kev ruaj ntseg tshuaj zoo heev thiab siab - kub tsis kam (txog +200 degree), tiv taus roj, roj, cov kuab tshuaj, thiab ntau yam tshuaj corrosive. Nws yog feem ntau siv nyob rau hauv automotive engines, aerospace systems, thiab chemical khoom.
Kev txwv
Feem ntau, nws qhov qis - qhov kub thiab txias ua haujlwm tau txo qis nrog cov ntsiab lus fluorine. FKM fluorinated ntau dhau los ua nkig ntawm qhov kub thiab txias, ua rau nws tsis tsim nyog rau cov ntawv thov uas xav tau qis - kub elasticity thiab kuj intolerant ntawm muaj zog alkaline ib puag ncig.
Silicone Roj Hmab (VMQ)
Khoom Khoom
Silicone roj hmab O-rings muaj qhov yooj yim heev thiab qhov kub thiab txias ntau. Vim lawv tsis muaj ntxhiab tsw thiab tsis yog- cov khoom muaj kuab lom, lawv tau siv dav hauv zaub mov- qib, kev kho mob, thiab hluav taws xob.
Kev txwv
Silicone muaj qhov tsis tshua muaj zog thiab ua haujlwm tsis zoo, ua rau nws tsis tsim nyog rau cov ntawv thov sealing uas nquag hnav, ua rau kom tawg. Tsis tas li ntawd, nws tsis kam mus rau chav, acids, alkalis, thiab roj yog txwv.
Ethylene Propylene Roj Hmab (EPDM)
Khoom Khoom
EPDM muaj kev tiv thaiv zoo heev rau dej, chav dej, lub teeb ultraviolet, thiab ozone, thiab tuav nws elasticity nyob rau hauv qhov kub ntawm -50℃rau +150℃. Tsis tas li ntawd, nws cov khoom hluav taws xob rwb thaiv tsev zoo heev. Nws feem ntau pom muaj nyob rau hauv cov khoom siv xws li cov dej kub thiab cov kav dej.
Kev txwv
Txawm li cas los xij, EPDM tsis haum rau roj av-raws li roj thiab roj ib puag ncig. Kev sib cuag nrog cov xov xwm no yuav ua rau nws o, muag, thiab poob elasticity, thaum kawg ua rau tsis ua hauj lwm.
Txhim kho O-Rings: Encapsulated thiab Coated Hom
Hauv ntau daim ntawv thov huab lossis tshwj xeeb, tus qauv elastomer O-rings yuav tsis ua raws li qhov yuav tsum tau ua. Txhawm rau txhim kho O-ring kev ua tau zoo, encapsulation thiab txheej yog siv los tsim kev sib xyaw lossis ua haujlwm O-rings kom haum rau ntau yam kev siv.
Encapsulated O-Rings
Encapsulated O-rings muaj ib lub hauv paus uas muaj zog (feem ntau yog silicone los yog fluororubber) thiab tag nrho encapsulated, tshuaj- tiv taus txheej txheej (xws li PTFE lossis FEP). Cov tub ntxhais muaj zog hauv lub cev muaj zog muab qhov tsim nyog resilience rau tus kheej - zawm foob, thaum lub txheej txheej tiv thaiv cov tshuaj tiv thaiv corrosion, kub kub, thiab kev sib txhuam. Zhonggao covFEP Encapsulated Silicon O Ringmuab cov elasticity ntawm silicone nrog cov tshuaj inertness thiab kub tsis kam ntawm FEP, ua rau nws haum rau sealing yuav tsum nyob rau hauv hnyav ib puag ncig.
Coated O-Rings
Coated O-ringsyog cov ntsaws ruaj ruaj nrog cov txheej txheem tshwj xeeb uas siv rau saum npoo ntawm tus qauv elastomer O- nplhaib. Cov txheej txheej txhim kho cov tshuaj tiv thaiv, txo kev sib txhuam, thiab txhim kho kev puas tsuaj thaum tuav lub zog thiab nws tus kheej- zawm foob ntawm cov tub ntxhais hauv lub cev muaj zog. Coated O-rings yog zoo tagnrho rau dynamic sealing daim ntawv thov uas tsis muaj kev sib txhuam thiab tshuaj tiv thaiv, xws li hydraulic pistons, rotary shafts, thiab khoom noj khoom haus los yog khoom kho mob.
Xaus
O-rings yog tsim los ntawm ntau yam elastomers, thiab kev xaiv cov khoom tsim nyog ua kom muaj lub foob zoo. Qee zaum, tus qauv elastomers tsis tuaj yeem daws qhov teeb meem no, thiab siab -kev ua tau zoo O-rings nrog cov txheej lossis cov txheej txheem tuaj yeem siv tau. Xaiv cov khoom tsim nyog rau koj lub nplhaib O- lub nplhaib ua kom muaj kev sib khi ua haujlwm, kev pabcuam lub neej, thiab kev nyab xeeb.
Zhonggao, raws li qhov kev cai txhim khu kev qha O-rings chaw tsim khoom thiab cov muag khoom hauv Suav teb, tsis tsuas yog muab siab -kev ua tau zoo O-rings ua los ntawm cov qauv elastomers, tab sis kuj muaj kev hloov kho qhov loj me, cov duab, thiab kev ua haujlwm kom tau raws li koj cov kev xav tau tshwj xeeb.Tiv tauj pebrau kev cai O-ring kev daws teeb meem raws li koj daim ntawv thov.
