Txhua cov khoom siv muaj qhov siab lossis ntsuas kub-tsawg uas yog, thaum nws tau mus txog, cov khoom yuav poob. Kev tswj hwm los ntawm coefficient ntawm thermal expansion (CTE), kev nqes tes lossis nthuav cov khoom tshwm sim raws li cov khoom txias lossis sov. Cov kev ntxhov siab uas tshwm sim thaum tsis kub tsis txias yuav tsis tshwm sim ntawm qhov kub siab dua thiab rov ua haujlwm dua. Txhawm rau tiv thaiv tsis ua haujlwm, gaskets, o-rings thiab lwm yam elastomeric sealing cov khoom yuav tsum muaj cov khoom sib txuas tshwj xeeb ntxiv kom paub tseeb tias nws cov khoom kho tshuab tuaj yeem tiv taus qhov kub uas tsim nyog. Nws yog ib qho tseem ceeb uas yuav tsum paub txog lub suab ntsuas kub tsis txaus ua ntej daim ntawv thov kom tsis txhob muaj kev tivthaiv tsis ua haujlwm.
Tsawg-Kub Ntsaws Ruaj Ruaj
Daim ntawv thov qis-kub rau cov ntsaws ruaj ruaj yog qhov tseem ceeb rau ntau qhov kev lag luam. Kws tshuaj, kev kho mob, aerospace, petrochemical, roj, thiab roj, khoom noj thiab mis nyuj tag nrho tso siab rau cov tshuaj pleev uas yuav tsum ua rau qhov chaw qis qis. Thaum txoj kev foob tau ncav cuag nws qhov kev txwv tsis pub muaj qhov qis nws yuav ua rau tawv tawv, ua stiffer, pib poob nws cov yam ntxwv ywj pheej thiab hloov tau yooj yim, thiab tawg. Raws li qhov ntsuas kub qis dua, qee lub sijhawm nws yuav hla lub iav hloov theem thiab dhau los ua iav thiab txhuam. Yog tias lub xeev ntawm cov iav hloov tshwm sim, txawm hais tias qee qhov kev sib txig tam sim no, lub foob yuav tsis ua haujlwm ntxiv lawm. Thaum ib txoj kev xau tau tsim hauv txoj kev foob, txawm tias tom qab kub rov qab mus rau "qhov qub," txoj kev xau yuav nyob.
Cov Ntshav Kub Kub
Kev thov kub-siab rau cov ntsaws ruaj ruaj, xws li hauv cov tshuab, kuj xav tau cov khoom kom raug los tiv thaiv to thiab tsis ua haujlwm. Ib puag ncig ib puag ncig lossis kub thiab huab cua kub heev yuav maj mam ua cov ntaub ntawv elastomeric thiab qib kev ua haujlwm yuav tsis zoo. Qhov tseeb yog elastomer muaj peev xwm los tiv taus thermal kev ua si ua lub luag haujlwm tseem ceeb hauv nws lub peev xwm ua haujlwm tau zoo raws li kev foob dhau lub sijhawm. Txhawm rau kom muaj kev ruaj khov thermal, cov khoom xaiv xaiv rau lub siab-ntsuas kub lub foob daim ntawv thov yuav tsum kuaj los ntawm kev laus ua kom sov.
Pom tseeb, cov kws tsim qauv paub zoo tias qhov ntsuas kub hloov pauv tuaj yeem hloov cov neeg kho tshuab khoom ntawm elastomers. Hauv kev ua lag luam niaj hnub no, cov elastomers tau kuaj kom tau raws li qhov ua tau kub. Gaskets, o-rings, thiab lwm cov ntsaws ruaj ruaj yog tsim rau cov chaw ua haujlwm tshwj xeeb. Txawm li cas los xij, nws yog tus neeg siv khoom lub luag haujlwm kom paub lossis paub txog tias tsis yog "ib qho" elastomeric cov ntaub ntawv yuav txaus ua qhov kev foob. Txhawm rau kom tsis txhob muaj teeb meem thiab to hauv cov ntawv thov kev sib khi, thiab tias koj cov roj hmab foob yuav ua tiav ntawm nws lub peev xwm, sab laj nrog koj tus neeg muag khoom thiab cia lawv coj koj kev.