Peb txhua tus paub ob-txheej khob khob, thiab yuav luag txhua tus yuav muaj lawv nyob hauv tsev.Txawm li cas los xij, peb tseem cia siab tias koj tuaj yeem paub qee qhov kev paub zoo.Nws zoo li ob txheej khob khob.Qhov kub tsis kam yog zoo dua li cov khob zoo tib yam, tab sis kuj tseem muaj qee yam ntawm qhov tseem ceeb, cia peb saib qhov ntsuas kub ntawm cov iav ob txheej.
Ordinary iav yog ib tug tsis zoo conductor ntawm tshav kub.Thaum ib feem ntawm cov phab ntsa sab hauv ntawm lub iav dheev ntsib cua sov (los yog txias), cov txheej sab hauv ntawm lub khob nthuav dav heev thaum rhuab, tab sis cov txheej txheej sab nrauv tsis yog cua sov txaus kom nthuav dav tsawg, uas ua rau txhua qhov ntawm cov iav muaj qhov kub thiab txias sib txawv ntawm lawv, thiab vim yog thermal expansion thiab contraction ntawm cov khoom, thermal expansion ntawm txhua feem ntawm iav tsis sib npaug.Yog tias qhov sib txawv tsis sib xws loj dhau, lub khob yuav tawg.
Nyob rau tib lub sijhawm, iav yog cov khoom siv nruj heev, thiab cov cua sov hloov ceev yog qeeb.Lub khob tuab dua, qhov ntau dua nws yuav tawg thaum qhov kub thiab txias nce sai vim qhov cuam tshuam ntawm qhov kub thiab txias sib txawv.Qhov ntawd yog hais tias, qhov kub ntawm qhov sib txawv ntawm cov dej kub npau npau thiab lub khob loj dhau los ua rau lub khob tawg.Yog li ntawd, kev siv cov iav tuab yog feem ntau "-5 mus rau 70 degrees Celsius", lossis ntxiv qee cov dej txias ua ntej nchuav dej, thiab tom qab ntawd ntxiv qee cov dej kub, tom qab lub khob sov, ncuav dej tawm, thiab tom qab ntawd. ntxiv dej npau npau.
Kev siv qhov kub thiab txias tiv thaiv ob txheej iav yog tias cov iav borosilicate siab muaj qhov coefficient tsawg heev ntawm thermal expansion, uas yog ib feem peb ntawm cov iav zoo tib yam.Nws tsis rhiab rau qhov kub thiab txias thiab tsis muaj thermal expansion ntawm cov khoom zoo tib yam.Nws yog txias-shrinkable, yog li nws muaj kub tsis kam thiab siab thermal stability.Yuav siv tau los tuav dej kub.
Tsis txhob siv cov iav tempered nyob rau hauv kev ua lag luam raws li lub khob uas tsis tiv taus qhov kub thiab txias.Qhov kub ntawm tempered iav yog tib yam li cov iav zoo tib yam, feem ntau hauv qab 70 degrees.Ceev faj.
Cov saum toj no yog kev taw qhia txog qhov kub thiab txias ntawm ob txheej iav, los ntawm -5 txog 70 degrees Celsius.Feem ntau, peb tuaj yeem xyuas kom meej tias nws qhov kub qis tsis tshaj qhov ntau, yog li peb yuav tsum tau them sai sai rau qhov kub thiab txias.Tsis tas li ntawd, qhov kub ntawm lub iav tempered yuav tsum tsis pub tshaj 70 degrees Celsius.Nws kuj xav tau kev saib xyuas ntau dua hauv kev siv txhua hnub.
Post lub sij hawm: Oct-12-2021