Dab tsi yog Cov Yam Tseem Ceeb Uas Muaj Kev Ruaj Ntseg Ntawm Cov Roj Hmab O-rings?
Jul 17, 2022
1. 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. Nyob rau hauv qhov kev txiav txim ntawm lub siab, O-nplhaib raws li cov khoom siv elastic yog elastically deformed, thiab thaum lub siab nce, cov yas deformation tas li tshwm sim.
2. Txhim kho compression quab yuam
Thaum lub sij hawm installation, lub compressive quab yuam muaj feem xyuam rau cov degree ntawm thawj compression thiab hardness ntawm cov khoom.
3. 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 mus rau 30 feem pua hauv cov ntsaws ruaj ruaj zoo li qub, thiab li 9 feem pua rau 25 feem pua hauv cov ntsaws ruaj ruaj.
4. 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 txiav txim siab npaum li cas ntawm compression ntawm O-ring thiab qhov siab tshaj plaws tso cai extrusion clearance ntawm qhov zawj. Txij li thaum nitrile foob ntawm Shore A70 tuaj yeem ua tau raws li feem ntau ntawm kev siv, tsis muaj kev piav qhia tshwj xeeb rau cov khoom sib khi, thiab cov roj hmab nitrile ntawm Shore A70 feem ntau yog muab.
5. O-rings yog siv los ua cov ntsaws ruaj ruaj
O-rings kuj tseem siv tau los ua cov ntsaws ntsaws ntsaws ntsaws ntsaws ruaj ruaj rau kev ua haujlwm qis qis thiab kev ua haujlwm luv luv. Thaum lub peripheral ceev qis dua 0.5m / s, nws yog ib qho tsim nyog yuav tau xav txog qhov tshwm sim uas lub nplhaib roj hmab elongated yuav ntsws tom qab tau rhuab, yog li lub puab txoj kab uas hla ntawm lub nplhaib sealing yog li 2 feem pua loj dua li ntawm txoj kab uas hla ntawm lub ncej kaw los ntawm nws. Tom qab lub nplhaib sealing tau muab tso rau hauv qhov zawj, lub nplhaib sealing yog compressed radially, thiab O-ring nplhaib tsim me ntsis corrugation nyob rau hauv qhov zawj, yog li txhim kho cov txheej txheem lubrication.
6. Extrusion qhov sib txawv
Qhov siab tshaj plaws pub extrusion gap gmax yog hais txog qhov system siab, txoj kab uas hla ntawm O-ring seem thiab hardness ntawm cov khoom. 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 thiab puas.
7. 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-ring yuav tsum zoo dua nyob rau hauv lub xeev stretched, nrog rau qhov siab tshaj plaws stretch ntawm 6 feem pua; rau cov ntsaws ruaj ruaj, O-nplhaib yuav tsum zoo dua yog compressed raws nws ncig, nrog rau qhov siab tshaj plaws tso cai ncig compression ntawm 3 feem pua.