1. Lub hardness ntawm O-ring
O-ring khoom hardness yog qhov taw qhia tseem ceeb tshaj plaws rau kev ntsuas kev ua haujlwm sealing. Lub hardness ntawm O-ring txiav txim siab npaum li cas ntawm compression ntawm O-ring thiab qhov siab tshaj plaws pub extrusion qhov sib txawv ntawm qhov zawj. Txij li thaum nitrile foob ntawm Shore A70 tuaj yeem ua tau raws li feem ntau ntawm kev siv, yog tias tsis muaj cov lus piav qhia tshwj xeeb rau cov khoom sib khi, feem ntau yog muab nitrile roj hmab ntawm Shore A70.
2. Extrusion qhov sib txawv
Qhov siab tshaj plaws pub extrusion gap gmax yog hais txog qhov system siab, O-ring seem kab thiab cov khoom hardness. Feem ntau, qhov siab dua qhov kev ua haujlwm siab, qhov me dua qhov siab tshaj plaws pub extrusion gap gmax. Yog tias qhov sib txawv g dhau qhov kev tso cai, O-ring yuav raug nyem tawm los yog puas.
3. Compression mus tas li deformation
Lwm qhov taw qhia rau kev ntsuas qhov kev sib khi ntawm O-rings yog cov txheej txheem compression ntawm cov khoom xaiv. Nyob rau hauv qhov kev txiav txim ntawm lub siab, O-nplhaib raws li cov khoom elastic tsim elastic deformation, thiab thaum lub siab nce, cov yas deformation mus tas li kuj tshwm sim.
4. Pre-compression tus nqi
Lub O-ring tau nruab rau hauv qhov zawj, txhawm rau kom ntseeg tau tias nws qhov kev sib khi ua haujlwm, tus nqi pib compression yuav tsum tau tshwj tseg. Rau cov kev siv sib txawv, tus nqi ntawm pre-compression txheeb ze rau seem txoj kab uas hla W kuj txawv. Feem ntau, nws yog li ntawm 15 feem pua -30 feem pua hauv cov ntsaws ruaj ruaj zoo li qub thiab li 9 feem pua -25 feem pua hauv cov ntsaws ruaj ruaj.
5. Kev nruj thiab compression
Thaum O-ring ntsia rau hauv qhov zawj, nws yuav raug nro lossis compression. Cov txiaj ntsig ntau dhau ntawm qhov nro thiab compression yuav ua rau muaj kev nce lossis txo qis hauv ntu ntu ntawm O-ntiv nplhaib, txij li 1 feem pua txoj kev sib raug zoo yuav txo tau txoj kab nruab nrab ntawm W los ntawm 0.5 feem pua. Rau lub qhov ntsaws ruaj ruaj, O-ntiv nplhaib yog qhov zoo dua nyob rau hauv lub xeev stretched, thiab qhov siab tshaj plaws pub stretch yog 6 feem pua; rau cov ntsaws ruaj ruaj, O-ring zoo dua compressed raws nws ncig, thiab qhov siab tshaj plaws tso cai ncig compression yog 3 feem pua.
6. O-rings yog siv los ua cov ntsaws ruaj ruaj
O-rings kuj tseem siv tau los ua cov ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws ntsaws kaw Thaum lub peripheral ceev qis dua 0.5m/s, O-ring tuaj yeem xaiv raws li tus qauv tsim qauv; thaum lub peripheral ceev yog siab tshaj 0.5m/s, qhov tshwm sim uas lub nplhaib roj hmab elongated yuav ntsws tom qab rhuab yuav tsum tau txiav txim siab, yog li ntawd lub sealing nplhaib yog xaiv. Qhov tshwm sim saum toj no tuaj yeem zam tau los ntawm kev ua nws txoj kab nruab nrab ntawm 2 feem pua loj dua li txoj kab uas hla ntawm cov ncej kaw los ntawm nws. Tom qab lub nplhaib sealing raug ntsia rau hauv qhov zawj, lub nplhaib sealing yog compressed radially, thiab O-ring tsim ib qho me me ntawm corrugation hauv qhov zawj, yog li txhim kho cov txheej txheem lubrication.