Thaum tshav kub kub-kho iav khoom, txawm tias tshav kub muaj zog los yog tempered, yog tsim nyob rau hauv ib tug heev zoo xws li siv tib yam khoom siv. Luv luv, lub khob yog rhuab mus rau kwv yees li 1200ºF (650ºC) thiab tom qab ntawd yuam kom txias los tsim qhov chaw thiab / lossis ntug compression hauv iav. Nws yog los ntawm kev tswj tus nqi ntawm cov cua txias uas txiav txim siab seb lub iav puas muaj zog los yog tempered. Txhawm rau tsim cov iav tempered, qhov cua txias yog nrawm dua, yog li tsim kom muaj qhov siab dua thiab / lossis ntug compression hauv iav. Txhawm rau tsim cov iav ua kom muaj cua sov, qhov cua txias qeeb qeeb thiab qhov tshwm sim hauv cov iav yog qis dua li cov iav tempered tag nrho tseem tseem siab dua li cov iav annealed. Kev lag luam tus qauv specification yuav tsum tau rau cov cua sov ntxiv dag zog thiab tempered iav tau teev nyob rau hauv ASTM C1048 "Standard Specification for Heat Treated Flat Glass - Hom HS, Hom FT Coated thiab Uncoated Glass."
Vim yog compression nyob rau hauv lub khob, cov iav muaj zog cua sov yog kwv yees li ob zaug muaj zog li annealed iav ntawm tib lub thickness. Tempered iav yog kwv yees li 4 mus rau 5 npaug li muaj zog li annealed iav ntawm tib tuab. Tsuas yog qhov kev nce hauv lub zog ntawm txhua yam, tag nrho lwm yam khoom ntawm iav tseem tsis hloov pauv nrog rau iav deflection.
Qhov tseem ceeb tshaj plaws thiab qhov sib txawv tseem ceeb ntawm cov cua sov ntxiv thiab cov iav tempered yog nyob rau hauv cov yam ntxwv tom qab tawg ntawm ob yam khoom (piv txwv li tawg qauv). Yog tias cov iav muaj zog cua sov yuav tsum tawg, cov khoom yuav loj heev thiab zoo li yuav nyob twj ywm hauv glazing system kom txog thaum tshem tawm. Tempered iav, ntawm qhov tod tes, yog tsim los tawg rau hauv suav tsis txheeb me me, roughly cubical pieces. Qhov tseeb, nws yog tus qauv tawg no uas tsim nyog rau iav tempered raws li cov khoom siv tiv thaiv glazing. Txawm li cas los xij, vim tias cov qauv tawg, cov iav tempered muaj ntau dua yuav khiav tawm ntawm qhov glazing tam sim ntawd thaum tawg. Lub luag haujlwm tsim cov kws tshaj lij yuav tsum xav txog qhov nyiam ntawm cov iav tempered kom tshem tawm qhov qhib thaum tawg thiab qhov tshwm sim yuav tsum tau txais. Cov neeg saib xyuas lub luag haujlwm paub tias yeej ib txwm muaj peev xwm ntawm iav tawg; Yog li ntawd, kev tsim kho iav yuav tsum tau tsim nrog qhov tsawg tsawg ntawm kev tawg, feem ntau tsawg dua 8 panels ib 1000 panels, tab sis yog hais tias lub iav tawg, lub iav tsim yuav tsum tau ua nyob rau hauv ib tug yam ntxwv kom lub breakage txim tau txais.
